feat: 支持工作流知识库多库检索

- 缓存节点汇聚模式拓扑分析结果

- 草稿保存复用内容序列化结果

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/DocumentChunkController.java

@@ -1,23 +1,18 @@
 package tech.easyflow.admin.controller.ai;
 
 import cn.dev33.satoken.annotation.SaCheckPermission;
-import com.easyagents.core.model.embedding.EmbeddingModel;
 import com.mybatisflex.core.paginate.Page;
+import com.mybatisflex.core.query.QueryWrapper;
+import tech.easyflow.ai.dto.DocumentChunkContentUpdateRequest;
+import tech.easyflow.ai.dto.DocumentChunkSyncRetryRequest;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatus;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatusRequest;
 import tech.easyflow.ai.entity.DocumentChunk;
-import tech.easyflow.ai.entity.DocumentCollection;
-import tech.easyflow.ai.entity.Model;
 import tech.easyflow.ai.service.DocumentChunkService;
-import tech.easyflow.ai.service.DocumentCollectionService;
-import tech.easyflow.ai.service.ModelService;
-import tech.easyflow.ai.support.DocumentStoreLifecycleSupport;
 import tech.easyflow.common.annotation.UsePermission;
 import tech.easyflow.common.domain.Result;
-import tech.easyflow.common.web.controller.BaseCurdController;
+import tech.easyflow.common.web.controller.BaseController;
 import tech.easyflow.common.web.jsonbody.JsonBody;
-import com.easyagents.core.document.Document;
-import com.easyagents.core.store.DocumentStore;
-import com.easyagents.core.store.StoreOptions;
-import com.easyagents.core.store.StoreResult;
 import jakarta.servlet.http.HttpServletRequest;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -28,12 +23,8 @@ import tech.easyflow.system.enums.ResourceAction;
 import tech.easyflow.system.enums.ResourceLookup;
 import tech.easyflow.system.permission.resource.RequireResourceAccess;
 
-import javax.annotation.Resource;
 import java.math.BigInteger;
-import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 /**
  *  控制层。
@@ -44,19 +35,12 @@ import java.util.Map;
 @RestController
 @RequestMapping("/api/v1/documentChunk")
 @UsePermission(moduleName = "/api/v1/documentCollection")
-public class DocumentChunkController extends BaseCurdController<DocumentChunkService, DocumentChunk> {
+public class DocumentChunkController extends BaseController {
 
-    @Resource
+    private final DocumentChunkService documentChunkService;
-    DocumentCollectionService documentCollectionService;
-
-    @Resource
-    ModelService modelService;
-
-    @Resource
-    DocumentChunkService documentChunkService;
 
     public DocumentChunkController(DocumentChunkService service) {
-        super(service);
+        this.documentChunkService = service;
     }
 
     @GetMapping("page")
@@ -68,9 +52,30 @@ public class DocumentChunkController extends BaseCurdController<DocumentChunkSer
             idExpr = "#request.getParameter('documentId')",
             denyMessage = "无权限访问知识库"
     )
-    @Override
+    public Result<Page<DocumentChunk>> page(
-    public Result<Page<DocumentChunk>> page(HttpServletRequest request, String sortKey, String sortType, Long pageNumber, Long pageSize) {
+        HttpServletRequest request,
-        return super.page(request, sortKey, sortType, pageNumber, pageSize);
+        Long pageNumber,
+        Long pageSize
+    ) {
+        String documentIdValue = request.getParameter("documentId");
+        if (documentIdValue == null || documentIdValue.isBlank()) {
+            return Result.<Page<DocumentChunk>>fail("documentId不能为空", null);
+        }
+        BigInteger documentId;
+        try {
+            documentId = new BigInteger(documentIdValue);
+        } catch (NumberFormatException e) {
+            return Result.<Page<DocumentChunk>>fail("documentId格式不正确", null);
+        }
+        long normalizedPageNumber = pageNumber == null || pageNumber < 1 ? 1 : pageNumber;
+        long normalizedPageSize = pageSize == null || pageSize < 1 ? 10 : pageSize;
+        QueryWrapper query = QueryWrapper.create()
+            .eq(DocumentChunk::getDocumentId, documentId)
+            .orderBy("sorting asc");
+        return Result.ok(documentChunkService.page(
+            new Page<>(normalizedPageNumber, normalizedPageSize),
+            query
+        ));
     }
 
     @PostMapping("update")
@@ -79,43 +84,23 @@ public class DocumentChunkController extends BaseCurdController<DocumentChunkSer
             resource = CategoryResourceType.KNOWLEDGE,
             action = ResourceAction.MANAGE,
             lookup = ResourceLookup.DOCUMENT_CHUNK_ID,
-            idExpr = "#documentChunk.id",
+            idExpr = "#request.id",
             denyMessage = "无权限管理知识库"
     )
-    public Result<?> update(@JsonBody DocumentChunk documentChunk) {
+    public Result<?> update(
-        boolean success = service.updateById(documentChunk);
+        @JsonBody(required = true, skipConvertError = false)
-        if (success){
+        DocumentChunkContentUpdateRequest request
-            DocumentChunk record = documentChunkService.getById(documentChunk.getId());
+    ) {
-            DocumentCollection knowledge = documentCollectionService.getById(record.getDocumentCollectionId());
+        DocumentChunk current = documentChunkService.getById(request.getId());
-            if (knowledge == null) {
+        if (current == null) {
-                return Result.fail(1, "知识库不存在");
+            return Result.fail(1, "记录不存在");
-            }
-            DocumentStore documentStore = knowledge.toDocumentStore();
-            if (documentStore == null) {
-                return Result.fail(2, "知识库没有配置向量库");
-            }
-            try {
-                // 设置向量模型
-                Model model = modelService.getModelInstance(knowledge.getVectorEmbedModelId());
-                if (model == null) {
-                    return Result.fail(3, "知识库没有配置向量模型");
-                }
-                EmbeddingModel embeddingModel = model.toEmbeddingModel();
-                documentStore.setEmbeddingModel(embeddingModel);
-                StoreOptions options = StoreOptions.ofCollectionName(knowledge.getVectorStoreCollection());
-                Document document = Document.of(documentChunk.getContent());
-                document.setId(documentChunk.getId());
-                Map<String, Object> metadata = new HashMap<>();
-                metadata.put("keywords", documentChunk.getMetadataKeyWords());
-                metadata.put("questions", documentChunk.getMetadataQuestions());
-                document.setMetadataMap(metadata);
-                StoreResult result = documentStore.update(document, options); // 更新已有记录
-                return Result.ok(result);
-            } finally {
-                DocumentStoreLifecycleSupport.closeQuietly(documentStore);
-            }
         }
-        return Result.ok(false);
+        DocumentChunk updated = documentChunkService.updateContent(
+            current.getDocumentCollectionId(),
+            current.getId(),
+            request.getContent()
+        );
+        return Result.ok(updated);
     }
 
     @PostMapping("removeChunk")
@@ -127,36 +112,58 @@ public class DocumentChunkController extends BaseCurdController<DocumentChunkSer
             idExpr = "#chunkId",
             denyMessage = "无权限管理知识库"
     )
-    public Result<?> remove(@JsonBody(value = "id", required = true) BigInteger chunkId) {
+    public Result<?> removeChunk(@JsonBody(value = "id", required = true) BigInteger chunkId) {
-        DocumentChunk docChunk =  documentChunkService.getById(chunkId);
+        DocumentChunk docChunk = documentChunkService.getById(chunkId);
         if (docChunk == null) {
             return Result.fail(1, "记录不存在");
         }
-        DocumentCollection knowledge = documentCollectionService.getById(docChunk.getDocumentCollectionId());
+        return Result.ok(documentChunkService.deleteChunk(
-        if (knowledge == null) {
+            docChunk.getDocumentCollectionId(),
-            return Result.fail(2, "知识库不存在");
+            chunkId
-        }
+        ));
-        DocumentStore documentStore = knowledge.toDocumentStore();
+    }
-        if (documentStore == null) {
-            return Result.fail(3, "知识库没有配置向量库");
-        }
-        try {
-            // 设置向量模型
-            Model model = modelService.getModelInstance(knowledge.getVectorEmbedModelId());
-            if (model == null) {
-                return Result.fail(4, "知识库没有配置向量模型");
-            }
-            EmbeddingModel embeddingModel = model.toEmbeddingModel();
-            documentStore.setEmbeddingModel(embeddingModel);
-            StoreOptions options = StoreOptions.ofCollectionName(knowledge.getVectorStoreCollection());
-            List<BigInteger> deleteList = new ArrayList<>();
-            deleteList.add(chunkId);
-            documentStore.delete(deleteList, options);
-            documentChunkService.removeChunk(knowledge, chunkId);
 
-            return super.remove(chunkId);
+    @PostMapping("syncStatus")
-        } finally {
+    @SaCheckPermission("/api/v1/documentCollection/query")
-            DocumentStoreLifecycleSupport.closeQuietly(documentStore);
+    @RequireResourceAccess(
+            resource = CategoryResourceType.KNOWLEDGE,
+            action = ResourceAction.READ,
+            lookup = ResourceLookup.DOCUMENT_ID,
+            idExpr = "#request.documentId",
+            denyMessage = "无权限访问知识库"
+    )
+    public Result<List<DocumentChunkSyncStatus>> syncStatus(
+        @JsonBody(required = true, skipConvertError = false)
+        DocumentChunkSyncStatusRequest request
+    ) {
+        return Result.ok(documentChunkService.listIndexSyncStatus(
+            null,
+            request.getDocumentId(),
+            request.getIds()
+        ));
+    }
+
+    @PostMapping("retrySync")
+    @SaCheckPermission("/api/v1/documentCollection/save")
+    @RequireResourceAccess(
+            resource = CategoryResourceType.KNOWLEDGE,
+            action = ResourceAction.MANAGE,
+            lookup = ResourceLookup.DOCUMENT_CHUNK_ID,
+            idExpr = "#request.id",
+            denyMessage = "无权限管理知识库"
+    )
+    public Result<?> retrySync(
+        @JsonBody(required = true, skipConvertError = false)
+        DocumentChunkSyncRetryRequest request
+    ) {
+        DocumentChunk current = documentChunkService.getById(request.getId());
+        if (current == null || request.getIndexSyncVersion() == null) {
+            return Result.fail(1, "记录不存在或同步版本缺失");
         }
+        return Result.ok(documentChunkService.retryIndexSync(
+            current.getDocumentCollectionId(),
+            current.getId(),
+            request.getIndexSyncVersion()
+        ));
     }
 }

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/DocumentController.java

@@ -118,12 +118,10 @@ public class DocumentController extends BaseCurdController<DocumentService, Docu
         List<Serializable> ids = Collections.singletonList(id);
         Result<?> result = onRemoveBefore(ids);
         if (result != null) return result;
-        boolean isSuccess = documentService.removeDoc(id);
+        boolean success = documentService.removeDoc(id);
-        if (!isSuccess){
+        if (success) {
-            return Result.ok(false);
+            onRemoveAfter(ids);
         }
-        boolean success = service.removeById(id);
-        onRemoveAfter(ids);
         return Result.ok(success);
     }
 

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/PluginItemController.java

@@ -18,10 +18,12 @@ import tech.easyflow.ai.easyagentsflow.entity.NodeInfo;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.easyagentsflow.service.TinyFlowService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.easyagentsflow.support.PublishedWorkflowDefinitionIds;
 import tech.easyflow.ai.entity.Plugin;
 import tech.easyflow.ai.entity.PluginItem;
 import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.ai.entity.WorkflowExecResult;
 import tech.easyflow.ai.enums.PluginType;
 import tech.easyflow.ai.plugin.workflow.snapshot.WorkflowPluginSnapshotResolver;
 import tech.easyflow.ai.service.PluginService;
@@ -29,6 +31,7 @@ import tech.easyflow.ai.service.PluginItemService;
 import tech.easyflow.ai.service.AgentResourceReferenceService;
 import tech.easyflow.ai.service.PluginVisibilityService;
 import tech.easyflow.ai.service.WorkflowService;
+import tech.easyflow.ai.service.WorkflowExecResultService;
 import tech.easyflow.common.constant.Constants;
 import tech.easyflow.common.annotation.UsePermission;
 import tech.easyflow.common.domain.Result;
@@ -91,11 +94,15 @@ public class PluginItemController extends BaseCurdController<PluginItemService,
     @Resource
     private WorkflowService workflowService;
     @Resource
+    private WorkflowExecResultService workflowExecResultService;
+    @Resource
     private ChainExecutor chainExecutor;
     @Resource
     private TinyFlowService tinyFlowService;
     @Resource
     private WorkflowCheckService workflowCheckService;
+    @Resource
+    private WorkflowResumeService workflowResumeService;
 
     @PostMapping("/tool/save")
     @SaCheckPermission("/api/v1/plugin/save")
@@ -215,6 +222,7 @@ public class PluginItemController extends BaseCurdController<PluginItemService,
     @SaCheckPermission("/api/v1/plugin/query")
     public Result<ChainInfo> pluginToolTestChainStatus(@JsonBody(value = "executeId", required = true) String executeId,
                                                        @JsonBody("nodes") List<NodeInfo> nodes) {
+        assertPluginTestExecutionOwnership(executeId);
         return Result.ok(tinyFlowService.getChainStatus(executeId, nodes));
     }
 
@@ -229,10 +237,33 @@ public class PluginItemController extends BaseCurdController<PluginItemService,
     @SaCheckPermission("/api/v1/plugin/query")
     public Result<Void> pluginToolTestResume(@JsonBody(value = "executeId", required = true) String executeId,
                                              @JsonBody("confirmParams") Map<String, Object> confirmParams) {
-        chainExecutor.resumeAsync(executeId, confirmParams);
+        assertPluginTestExecutionOwnership(executeId);
+        workflowResumeService.resume(executeId, confirmParams);
         return Result.ok();
     }
 
+    /**
+     * 校验插件试运行实例由当前登录用户发起。
+     *
+     * @param executeId 执行实例 ID
+     */
+    private void assertPluginTestExecutionOwnership(String executeId) {
+        if (StrUtil.isBlank(executeId)) {
+            throw new BusinessException("执行ID不能为空");
+        }
+        WorkflowExecResult record = workflowExecResultService.getByExecKey(executeId);
+        if (record == null) {
+            throw new BusinessException(404, 404, "工作流执行记录不存在或已过期");
+        }
+        LoginAccount currentAccount = SaTokenUtil.getLoginAccount();
+        if (currentAccount == null
+                || currentAccount.getId() == null
+                || record.getCreatedBy() == null
+                || !currentAccount.getId().toString().equals(record.getCreatedBy())) {
+            throw new BusinessException(403, 403, "无权限访问当前插件试运行实例");
+        }
+    }
+
     private void handleArray(JSONArray array) {
         for (Object o : array) {
             JSONObject obj = (JSONObject) o;

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/ShareKnowledgeController.java

@@ -1,10 +1,6 @@
 package tech.easyflow.admin.controller.ai;
 
 import cn.hutool.core.io.IoUtil;
-import com.easyagents.core.model.embedding.EmbeddingModel;
-import com.easyagents.core.store.DocumentStore;
-import com.easyagents.core.store.StoreOptions;
-import com.easyagents.core.store.StoreResult;
 import com.mybatisflex.core.paginate.Page;
 import com.mybatisflex.core.query.QueryColumn;
 import com.mybatisflex.core.query.QueryWrapper;
@@ -22,6 +18,11 @@ import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 import org.springframework.web.multipart.MultipartFile;
 import tech.easyflow.ai.documentimport.DocumentImportDtos;
 import tech.easyflow.ai.documentimport.task.DocumentImportTaskStatusStreamService;
+import tech.easyflow.ai.dto.DocumentChunkContentUpdateRequest;
+import tech.easyflow.ai.dto.DocumentChunkDeleteResult;
+import tech.easyflow.ai.dto.DocumentChunkSyncRetryRequest;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatus;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatusRequest;
 import tech.easyflow.ai.dto.KnowledgeShareLimitedConfigRequest;
 import tech.easyflow.ai.dto.KnowledgeSearchResultItem;
 import tech.easyflow.ai.entity.Document;
@@ -43,7 +44,6 @@ import tech.easyflow.ai.service.KnowledgeEmbeddingService;
 import tech.easyflow.ai.service.KnowledgeShareAuditService;
 import tech.easyflow.ai.service.KnowledgeShareService;
 import tech.easyflow.ai.service.ModelService;
-import tech.easyflow.ai.support.DocumentStoreLifecycleSupport;
 import tech.easyflow.ai.vo.FaqImportResultVo;
 import tech.easyflow.ai.vo.KnowledgeShareAuthContext;
 import tech.easyflow.ai.vo.KnowledgeShareViewDetail;
@@ -62,7 +62,6 @@ import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.text.SimpleDateFormat;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -505,43 +504,27 @@ public class ShareKnowledgeController {
     @PostMapping("/documentChunk/update")
     public Result<?> updateDocumentChunk(
         @RequestParam String shareKey,
-        @JsonBody DocumentChunk documentChunk
+        @JsonBody(required = true, skipConvertError = false)
+        DocumentChunkContentUpdateRequest request
     ) {
         KnowledgeShareAuthContext context = knowledgeShareService.assertUrlShareAccess(
             shareKey,
             null,
             KnowledgeShareActionScope.CONTENT_UPDATE.name()
         );
-        DocumentChunk current = documentChunkService.getById(documentChunk.getId());
+        DocumentChunk current = documentChunkService.getById(request.getId());
         if (current == null || current.getDocumentCollectionId() == null
             || current.getDocumentCollectionId().compareTo(context.getKnowledge().getId()) != 0) {
             throw new BusinessException("记录不存在");
         }
-        boolean success = documentChunkService.updateById(documentChunk);
+        DocumentChunk updated = documentChunkService.updateContent(
-        if (success) {
+            context.getKnowledge().getId(),
-            DocumentStore documentStore = context.getKnowledge().toDocumentStore();
+            current.getId(),
-            if (documentStore == null) {
+            request.getContent()
-                return Result.fail(2, "知识库没有配置向量库");
+        );
-            }
+        audit(context, "更新分享文档 Chunk", "KNOWLEDGE_SHARE_URL_WRITE", true,
-            try {
+            auditDetail("knowledgeId", context.getKnowledge().getId(), "chunkId", request.getId()));
-                Model model = modelService.getModelInstance(context.getKnowledge().getVectorEmbedModelId());
+        return Result.ok(updated);
-                if (model == null) {
-                    return Result.fail(3, "知识库没有配置向量模型");
-                }
-                EmbeddingModel embeddingModel = model.toEmbeddingModel();
-                documentStore.setEmbeddingModel(embeddingModel);
-                StoreOptions options = StoreOptions.ofCollectionName(context.getKnowledge().getVectorStoreCollection());
-                com.easyagents.core.document.Document doc = com.easyagents.core.document.Document.of(documentChunk.getContent());
-                doc.setId(documentChunk.getId());
-                StoreResult result = documentStore.update(doc, options);
-                audit(context, "更新分享文档 Chunk", "KNOWLEDGE_SHARE_URL_WRITE", true,
-                    auditDetail("knowledgeId", context.getKnowledge().getId(), "chunkId", documentChunk.getId()));
-                return Result.ok(result);
-            } finally {
-                DocumentStoreLifecycleSupport.closeQuietly(documentStore);
-            }
-        }
-        return Result.ok(false);
     }
 
     /**
@@ -562,25 +545,50 @@ public class ShareKnowledgeController {
             || current.getDocumentCollectionId().compareTo(context.getKnowledge().getId()) != 0) {
             return Result.fail(1, "记录不存在");
         }
-        DocumentStore documentStore = context.getKnowledge().toDocumentStore();
+        DocumentChunkDeleteResult removed = documentChunkService.deleteChunk(
-        if (documentStore == null) {
+            context.getKnowledge().getId(),
-            return Result.fail(2, "知识库没有配置向量库");
+            chunkId
+        );
+        audit(context, "删除分享文档 Chunk", "KNOWLEDGE_SHARE_URL_WRITE", true,
+            auditDetail("knowledgeId", context.getKnowledge().getId(), "chunkId", chunkId));
+        return Result.ok(removed);
+    }
+
+    @PostMapping("/documentChunk/syncStatus")
+    public Result<List<DocumentChunkSyncStatus>> documentChunkSyncStatus(
+        @RequestParam String shareKey,
+        @JsonBody DocumentChunkSyncStatusRequest request
+    ) {
+        KnowledgeShareAuthContext context = knowledgeShareService.assertUrlShareAccess(
+            shareKey, null, KnowledgeShareActionScope.VIEW.name()
+        );
+        Document document = documentService.getById(request.getDocumentId());
+        if (document == null || document.getCollectionId() == null
+            || document.getCollectionId().compareTo(context.getKnowledge().getId()) != 0) {
+            throw new BusinessException("文档不存在");
         }
-        try {
+        return Result.ok(documentChunkService.listIndexSyncStatus(
-            Model model = modelService.getModelInstance(context.getKnowledge().getVectorEmbedModelId());
+            context.getKnowledge().getId(), request.getDocumentId(), request.getIds()
-            if (model == null) {
+        ));
-                return Result.fail(3, "知识库没有配置向量模型");
+    }
-            }
+
-            documentStore.setEmbeddingModel(model.toEmbeddingModel());
+    @PostMapping("/documentChunk/retrySync")
-            StoreOptions options = StoreOptions.ofCollectionName(context.getKnowledge().getVectorStoreCollection());
+    public Result<DocumentChunk> retryDocumentChunkSync(
-            documentStore.delete(Collections.singletonList(chunkId), options);
+        @RequestParam String shareKey,
-            documentChunkService.removeById(chunkId);
+        @JsonBody DocumentChunkSyncRetryRequest request
-            audit(context, "删除分享文档 Chunk", "KNOWLEDGE_SHARE_URL_WRITE", true,
+    ) {
-                auditDetail("knowledgeId", context.getKnowledge().getId(), "chunkId", chunkId));
+        KnowledgeShareAuthContext context = knowledgeShareService.assertUrlShareAccess(
-            return Result.ok(true);
+            shareKey, null, KnowledgeShareActionScope.CONTENT_UPDATE.name()
-        } finally {
+        );
-            DocumentStoreLifecycleSupport.closeQuietly(documentStore);
+        if (request.getIndexSyncVersion() == null) {
+            throw new BusinessException("同步版本不能为空");
         }
+        DocumentChunk chunk = documentChunkService.retryIndexSync(
+            context.getKnowledge().getId(), request.getId(), request.getIndexSyncVersion()
+        );
+        audit(context, "重试分享文档 Chunk 索引同步", "KNOWLEDGE_SHARE_URL_WRITE", true,
+            auditDetail("knowledgeId", context.getKnowledge().getId(), "chunkId", request.getId()));
+        return Result.ok(chunk);
     }
 
     /**

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/WorkflowChatController.java

@@ -1,6 +1,5 @@
 package tech.easyflow.admin.controller.ai;
 
-import com.easyagents.flow.core.chain.ChainStatus;
 import com.easyagents.flow.core.chain.runtime.ChainExecutor;
 import com.mybatisflex.core.query.QueryWrapper;
 import jakarta.servlet.http.HttpServletRequest;
@@ -14,6 +13,7 @@ import tech.easyflow.admin.service.ai.WorkflowChatEventStream;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowRunningParameterResolver;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.easyagentsflow.support.PublishedWorkflowDefinitionIds;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.entity.WorkflowExecResult;
@@ -64,6 +64,8 @@ public class WorkflowChatController {
     @Resource
     private ChainExecutor chainExecutor;
     @Resource
+    private WorkflowResumeService workflowResumeService;
+    @Resource
     private WorkflowExecResultService execResultService;
     @Resource
     private WorkflowExecStepService execStepService;
@@ -171,19 +173,8 @@ public class WorkflowChatController {
             @JsonBody("confirmParams")
             Map<String, Object> confirmParams
     ) {
-        WorkflowExecResult record = assertExecutionOwnership(executeId);
+        assertExecutionOwnership(executeId);
-        if (record.getStatus() != null
+        workflowResumeService.resume(executeId, confirmParams);
-                && (record.getStatus() == ChainStatus.SUCCEEDED.getValue()
-                || record.getStatus() == ChainStatus.FAILED.getValue()
-                || record.getStatus() == ChainStatus.CANCELLED.getValue())) {
-            throw new BusinessException("当前工作流执行已结束");
-        }
-        chainExecutor.resumeAsync(
-                executeId,
-                confirmParams == null
-                        ? new LinkedHashMap<>()
-                        : new LinkedHashMap<>(confirmParams)
-        );
         return Result.ok();
     }
 

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/WorkflowController.java

@@ -31,6 +31,7 @@ import tech.easyflow.ai.easyagentsflow.service.TinyFlowService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowDatacenterContentService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowRunningParameterResolver;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.enums.PublishStatus;
 import tech.easyflow.ai.publish.WorkflowPublishAppService;
@@ -94,6 +95,8 @@ public class WorkflowController extends BaseCurdController<WorkflowService, Work
     @Resource
     private WorkflowRunningParameterResolver workflowRunningParameterResolver;
     @Resource
+    private WorkflowResumeService workflowResumeService;
+    @Resource
     private ResourceAccessService resourceAccessService;
     @Resource
     private WorkflowVisibilityQueryHelper workflowVisibilityQueryHelper;
@@ -324,12 +327,7 @@ public class WorkflowController extends BaseCurdController<WorkflowService, Work
     )
     public Result<Void> resume(@JsonBody(value = "executeId", required = true) String executeId,
                                @JsonBody("confirmParams") Map<String, Object> confirmParams) {
-        if (!chainExecutor.resumeAsyncIfSuspended(executeId, confirmParams)) {
+        workflowResumeService.resume(executeId, confirmParams);
-            throw new BusinessException(
-                    409,
-                    40901,
-                    "当前执行状态不可恢复，仅暂停中的工作流允许恢复");
-        }
         return Result.ok();
     }
 

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/model/ai/WorkflowDesignerOptionsView.java

@@ -52,11 +52,17 @@ public record WorkflowDesignerOptionsView(
      * @param id 知识库 ID
      * @param title 知识库标题
      * @param description 知识库描述
+     * @param vectorEmbedModelId Embedding 模型 ID
+     * @param dimensionOfVectorModel 向量维度
+     * @param vectorStoreEnabled 是否可用于向量检索
      */
     public record KnowledgeOption(
             @JsonSerialize(using = ToStringSerializer.class) BigInteger id,
             String title,
-            String description
+            String description,
+            @JsonSerialize(using = ToStringSerializer.class) BigInteger vectorEmbedModelId,
+            Integer dimensionOfVectorModel,
+            Boolean vectorStoreEnabled
     ) {
     }
 

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/service/ai/WorkflowDesignerOptionService.java

@@ -14,6 +14,7 @@ import com.mybatisflex.core.query.QueryWrapper;
 import org.springframework.stereotype.Service;
 import tech.easyflow.admin.model.ai.WorkflowDesignerOptionsView;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowDatacenterContentService;
+import tech.easyflow.ai.easyagentsflow.knowledge.WorkflowKnowledgeContractService;
 import tech.easyflow.ai.entity.DocumentCollection;
 import tech.easyflow.ai.entity.Model;
 import tech.easyflow.ai.entity.ModelProvider;
@@ -75,6 +76,7 @@ public class WorkflowDesignerOptionService {
     private final DatacenterSourceService datacenterSourceService;
     private final DatacenterDatasetRegistryService datacenterDatasetRegistryService;
     private final DatacenterDatasetQueryService datacenterDatasetQueryService;
+    private final WorkflowKnowledgeContractService workflowKnowledgeContractService;
 
     /**
      * 创建工作流设计器选项服务。
@@ -93,6 +95,7 @@ public class WorkflowDesignerOptionService {
      * @param datacenterSourceService 数据源服务
      * @param datacenterDatasetRegistryService 数据集注册服务
      * @param datacenterDatasetQueryService 数据集查询服务
+     * @param workflowKnowledgeContractService 工作流知识库契约服务
      */
     public WorkflowDesignerOptionService(
             ModelService modelService,
@@ -108,7 +111,8 @@ public class WorkflowDesignerOptionService {
             ResourceAccessService resourceAccessService,
             DatacenterSourceService datacenterSourceService,
             DatacenterDatasetRegistryService datacenterDatasetRegistryService,
-            DatacenterDatasetQueryService datacenterDatasetQueryService) {
+            DatacenterDatasetQueryService datacenterDatasetQueryService,
+            WorkflowKnowledgeContractService workflowKnowledgeContractService) {
         this.modelService = modelService;
         this.documentCollectionService = documentCollectionService;
         this.pluginService = pluginService;
@@ -123,6 +127,7 @@ public class WorkflowDesignerOptionService {
         this.datacenterSourceService = datacenterSourceService;
         this.datacenterDatasetRegistryService = datacenterDatasetRegistryService;
         this.datacenterDatasetQueryService = datacenterDatasetQueryService;
+        this.workflowKnowledgeContractService = workflowKnowledgeContractService;
     }
 
     /**
@@ -163,6 +168,7 @@ public class WorkflowDesignerOptionService {
         LoginAccount account = requireAccount();
         Set<BigInteger> modelIds = new HashSet<>();
         Set<BigInteger> knowledgeIds = new HashSet<>();
+        List<List<BigInteger>> knowledgeGroups = new ArrayList<>();
         Set<BigInteger> checkedPluginItemIds = new HashSet<>();
         Set<BigInteger> checkedWorkflowIds = new HashSet<>();
         Set<BigInteger> checkedSourceIds = new HashSet<>();
@@ -177,14 +183,22 @@ public class WorkflowDesignerOptionService {
             if (data == null) {
                 continue;
             }
-            String nodeType = data.getString("type");
+            String nodeType = node.getString("type");
+            String dataType = data.getString("type");
+            if (nodeType != null && !nodeType.isBlank()
+                    && dataType != null && !dataType.isBlank()
+                    && !Objects.equals(nodeType, dataType)) {
+                throw new BusinessException("工作流节点类型与节点数据类型不一致");
+            }
             if (nodeType == null || nodeType.isBlank()) {
-                nodeType = node.getString("type");
+                nodeType = dataType;
             }
             if ("llmNode".equals(nodeType)) {
                 addReferenceId(modelIds, readReferenceId(data, "llmId", "模型"));
             } else if ("knowledgeNode".equals(nodeType)) {
-                addReferenceId(knowledgeIds, readReferenceId(data, "knowledgeId", "知识库"));
+                List<BigInteger> nodeKnowledgeIds = readKnowledgeReferenceIds(data);
+                knowledgeIds.addAll(nodeKnowledgeIds);
+                knowledgeGroups.add(nodeKnowledgeIds);
             } else if ("plugin-node".equals(nodeType)) {
                 BigInteger pluginItemId = readReferenceId(data, "pluginId", "插件工具");
                 if (pluginItemId != null && checkedPluginItemIds.add(pluginItemId)) {
@@ -198,6 +212,8 @@ public class WorkflowDesignerOptionService {
         }
         assertModelReferences(modelIds, account);
         assertKnowledgeReferences(knowledgeIds, account);
+        workflowKnowledgeContractService.assertMultiKnowledgeContracts(
+                knowledgeGroups, account.getTenantId());
     }
 
     /**
@@ -460,17 +476,55 @@ public class WorkflowDesignerOptionService {
     }
 
     private List<WorkflowDesignerOptionsView.KnowledgeOption> listKnowledgeOptions(LoginAccount account) {
-        return documentCollectionService.list(QueryWrapper.create()
+        List<DocumentCollection> collections = documentCollectionService.list(QueryWrapper.create()
                         .eq(DocumentCollection::getTenantId, account.getTenantId())
-                        .orderBy(DocumentCollection::getModified, false))
+                        .orderBy(DocumentCollection::getModified, false));
-                .stream()
+        Set<BigInteger> vectorReadyIds = workflowKnowledgeContractService
+                .findVectorReadyKnowledgeIds(collections, account.getTenantId());
+        return collections.stream()
                 .filter(item -> resourceAccessService.canAccess(
                         account, CategoryResourceType.KNOWLEDGE, item, ResourceAction.USE))
                 .map(item -> new WorkflowDesignerOptionsView.KnowledgeOption(
-                        item.getId(), item.getTitle(), item.getDescription()))
+                        item.getId(),
+                        item.getTitle(),
+                        item.getDescription(),
+                        item.getVectorEmbedModelId(),
+                        item.getDimensionOfVectorModel(),
+                        vectorReadyIds.contains(item.getId())))
                 .toList();
     }
 
+    private List<BigInteger> readKnowledgeReferenceIds(JSONObject data) {
+        if (data.containsKey("knowledgeIds")) {
+            Object rawIds = data.get("knowledgeIds");
+            if (!(rawIds instanceof JSONArray ids) || ids.isEmpty()) {
+                throw new BusinessException("知识库节点至少需要选择一个知识库");
+            }
+            List<BigInteger> result = new ArrayList<>();
+            for (Object id : ids) {
+                BigInteger parsed = parseReferenceId(id, "知识库");
+                if (result.contains(parsed)) {
+                    throw new BusinessException("知识库节点不能重复选择同一知识库");
+                }
+                result.add(parsed);
+            }
+            return result;
+        }
+        BigInteger legacyId = readReferenceId(data, "knowledgeId", "知识库");
+        return legacyId == null ? List.of() : List.of(legacyId);
+    }
+
+    private BigInteger parseReferenceId(Object value, String resourceName) {
+        if (value == null || String.valueOf(value).isBlank()) {
+            throw new BusinessException(resourceName + "ID不能为空");
+        }
+        try {
+            return new BigInteger(String.valueOf(value));
+        } catch (NumberFormatException exception) {
+            throw new BusinessException(resourceName + "ID无效");
+        }
+    }
+
     private void addReferenceId(Set<BigInteger> resourceIds, BigInteger resourceId) {
         if (resourceId != null) {
             resourceIds.add(resourceId);

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/service/ai/WorkflowPublicChatService.java

@@ -13,6 +13,7 @@ import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowRunningParameterResolver;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.easyagentsflow.support.PublishedWorkflowDefinitionIds;
 import tech.easyflow.ai.entity.WorkflowExecResult;
 import tech.easyflow.ai.entity.WorkflowExecStep;
@@ -46,6 +47,7 @@ public class WorkflowPublicChatService {
     private final WorkflowPublicChatAccessGuard accessGuard;
     private final WorkflowChatEventStream eventStream;
     private final ChainExecutor chainExecutor;
+    private final WorkflowResumeService workflowResumeService;
     private final WorkflowExecResultService execResultService;
     private final WorkflowExecStepService execStepService;
 
@@ -57,6 +59,7 @@ public class WorkflowPublicChatService {
             WorkflowPublicChatAccessGuard accessGuard,
             WorkflowChatEventStream eventStream,
             ChainExecutor chainExecutor,
+            WorkflowResumeService workflowResumeService,
             WorkflowExecResultService execResultService,
             WorkflowExecStepService execStepService
     ) {
@@ -67,6 +70,7 @@ public class WorkflowPublicChatService {
         this.accessGuard = accessGuard;
         this.eventStream = eventStream;
         this.chainExecutor = chainExecutor;
+        this.workflowResumeService = workflowResumeService;
         this.execResultService = execResultService;
         this.execStepService = execStepService;
     }
@@ -185,17 +189,8 @@ public class WorkflowPublicChatService {
     ) {
         WorkflowPublicChatContext context = contextResolver.resolveActive(
                 shareKey, visitorId);
-        WorkflowExecResult record = assertExecutionOwnership(
+        assertExecutionOwnership(context, executeId);
-                context, executeId);
+        workflowResumeService.resume(executeId, confirmParams);
-        if (isTerminal(record.getStatus())) {
-            throw new BusinessException("当前工作流执行已结束");
-        }
-        chainExecutor.resumeAsync(
-                executeId,
-                confirmParams == null
-                        ? new LinkedHashMap<>()
-                        : new LinkedHashMap<>(confirmParams)
-        );
     }
 
     /**
@@ -253,13 +248,6 @@ public class WorkflowPublicChatService {
         return record;
     }
 
-    private boolean isTerminal(Integer status) {
-        return status != null
-                && (status == ChainStatus.SUCCEEDED.getValue()
-                || status == ChainStatus.FAILED.getValue()
-                || status == ChainStatus.CANCELLED.getValue());
-    }
-
     private Map<String, Object> buildExecutionDetail(
             WorkflowExecResult record,
             List<WorkflowExecStep> steps,

easyflow-api/easyflow-api-admin/src/test/java/tech/easyflow/admin/controller/ai/DocumentChunkControllerContractTest.java

@@ -0,0 +1,120 @@
+package tech.easyflow.admin.controller.ai;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+import org.springframework.web.bind.annotation.PostMapping;
+import tech.easyflow.ai.dto.DocumentChunkContentUpdateRequest;
+import tech.easyflow.ai.entity.DocumentChunk;
+import tech.easyflow.ai.service.DocumentChunkService;
+import tech.easyflow.common.web.controller.BaseController;
+import tech.easyflow.common.web.jsonbody.JsonBody;
+import tech.easyflow.system.permission.resource.RequireResourceAccess;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Parameter;
+import java.math.BigInteger;
+import java.util.Arrays;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * 文档分块维护接口契约测试。
+ */
+public class DocumentChunkControllerContractTest {
+
+    @Test
+    public void updateEndpointsShouldOnlyAcceptChunkIdAndContent() throws Exception {
+        Method adminUpdate = DocumentChunkController.class.getDeclaredMethod(
+            "update",
+            DocumentChunkContentUpdateRequest.class
+        );
+        Method shareUpdate = ShareKnowledgeController.class.getDeclaredMethod(
+            "updateDocumentChunk",
+            String.class,
+            DocumentChunkContentUpdateRequest.class
+        );
+
+        Assert.assertNotNull(adminUpdate);
+        Assert.assertNotNull(shareUpdate);
+        assertStrictJsonBody(adminUpdate.getParameters()[0]);
+        assertStrictJsonBody(shareUpdate.getParameters()[1]);
+        Assert.assertEquals(
+            adminUpdate.getAnnotation(RequireResourceAccess.class).idExpr(),
+            "#request.id"
+        );
+        Set<String> fields = Arrays.stream(
+                DocumentChunkContentUpdateRequest.class.getDeclaredFields()
+            )
+            .map(Field::getName)
+            .collect(Collectors.toSet());
+        Assert.assertEquals(Set.of("id", "content"), fields);
+        Assert.assertEquals(
+            DocumentChunkController.class.getMethod(
+                "update",
+                DocumentChunkContentUpdateRequest.class
+            ).getDeclaringClass(),
+            DocumentChunkController.class
+        );
+        Assert.assertEquals(
+            Arrays.stream(DocumentChunkController.class.getDeclaredMethods())
+                .filter(method -> method.getName().equals("update"))
+                .filter(method -> !method.isBridge() && !method.isSynthetic())
+                .count(),
+            1L
+        );
+    }
+
+    @Test
+    public void controllerShouldNotExposeGenericWriteEndpoints() {
+        Assert.assertEquals(DocumentChunkController.class.getSuperclass(), BaseController.class);
+        Set<String> postMappings = Arrays.stream(DocumentChunkController.class.getMethods())
+            .map(method -> method.getAnnotation(PostMapping.class))
+            .filter(annotation -> annotation != null)
+            .flatMap(annotation -> Arrays.stream(annotation.value()))
+            .collect(Collectors.toSet());
+
+        Assert.assertEquals(
+            postMappings,
+            Set.of("update", "removeChunk", "syncStatus", "retrySync")
+        );
+        Assert.assertFalse(postMappings.contains("save"));
+        Assert.assertFalse(postMappings.contains("remove"));
+        Assert.assertFalse(postMappings.contains("removeBatch"));
+    }
+
+    @Test
+    public void adminUpdateAndDeleteShouldUseUnifiedMaintenanceService() {
+        DocumentChunkService service = mock(DocumentChunkService.class);
+        DocumentChunkController controller = new DocumentChunkController(service);
+
+        DocumentChunk current = new DocumentChunk();
+        current.setId(BigInteger.ONE);
+        current.setDocumentCollectionId(BigInteger.TWO);
+        when(service.getById(BigInteger.ONE)).thenReturn(current);
+
+        DocumentChunkContentUpdateRequest request = new DocumentChunkContentUpdateRequest();
+        request.setId(BigInteger.ONE);
+        request.setContent("updated");
+        controller.update(request);
+        controller.removeChunk(BigInteger.ONE);
+
+        verify(service).updateContent(BigInteger.TWO, BigInteger.ONE, "updated");
+        verify(service).deleteChunk(BigInteger.TWO, BigInteger.ONE);
+        verify(service, never()).updateById(any(DocumentChunk.class));
+        verify(service, never()).removeById(any());
+    }
+
+    private static void assertStrictJsonBody(Parameter parameter) {
+        JsonBody jsonBody = parameter.getAnnotation(JsonBody.class);
+        Assert.assertNotNull(jsonBody);
+        Assert.assertTrue(jsonBody.required());
+        Assert.assertFalse(jsonBody.skipConvertError());
+    }
+}

easyflow-api/easyflow-api-admin/src/test/java/tech/easyflow/admin/controller/ai/PluginItemControllerTest.java

@@ -7,21 +7,27 @@ import org.testng.Assert;
 import org.testng.annotations.Test;
 import tech.easyflow.ai.entity.Plugin;
 import tech.easyflow.ai.entity.PluginItem;
+import tech.easyflow.ai.entity.WorkflowExecResult;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.service.AgentResourceReferenceService;
 import tech.easyflow.ai.service.PluginItemService;
 import tech.easyflow.ai.service.PluginService;
 import tech.easyflow.ai.service.PluginVisibilityService;
+import tech.easyflow.ai.service.WorkflowExecResultService;
 import tech.easyflow.common.entity.LoginAccount;
 import tech.easyflow.common.satoken.util.SaTokenUtil;
+import tech.easyflow.common.web.exceptions.BusinessException;
 
 import java.math.BigInteger;
 import java.util.List;
 import java.util.Locale;
+import java.util.Map;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.mockStatic;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoInteractions;
 import static org.mockito.Mockito.when;
 
 /**
@@ -68,6 +74,61 @@ public class PluginItemControllerTest {
         verify(visibilityService).assertPluginVisible(1L, BigInteger.TEN, "无权限删除该插件工具");
     }
 
+    /**
+     * 验证当前用户不能恢复其他用户发起的插件试运行实例。
+     */
+    @Test
+    public void testResumeShouldRejectAnotherUsersExecution() {
+        PluginItemService pluginItemService = mock(PluginItemService.class);
+        WorkflowExecResultService execResultService = mock(WorkflowExecResultService.class);
+        WorkflowResumeService resumeService = mock(WorkflowResumeService.class);
+        WorkflowExecResult record = new WorkflowExecResult();
+        record.setCreatedBy(BigInteger.ONE.toString());
+        when(execResultService.getByExecKey("execution-1")).thenReturn(record);
+
+        PluginItemController controller = new PluginItemController(pluginItemService);
+        setField(controller, "workflowExecResultService", execResultService);
+        setField(controller, "workflowResumeService", resumeService);
+        LoginAccount currentAccount = new LoginAccount();
+        currentAccount.setId(BigInteger.TWO);
+
+        try (MockedStatic<SaTokenUtil> login = mockStatic(SaTokenUtil.class)) {
+            login.when(SaTokenUtil::getLoginAccount).thenReturn(currentAccount);
+            BusinessException error = Assert.expectThrows(
+                    BusinessException.class,
+                    () -> controller.pluginToolTestResume("execution-1", Map.of())
+            );
+            Assert.assertEquals(error.getHttpStatus(), 403);
+            Assert.assertEquals(error.getErrorCode(), 403);
+        }
+        verifyNoInteractions(resumeService);
+    }
+
+    /**
+     * 验证当前用户可以恢复自己发起的插件试运行实例。
+     */
+    @Test
+    public void testResumeShouldAllowExecutionOwner() {
+        PluginItemService pluginItemService = mock(PluginItemService.class);
+        WorkflowExecResultService execResultService = mock(WorkflowExecResultService.class);
+        WorkflowResumeService resumeService = mock(WorkflowResumeService.class);
+        WorkflowExecResult record = new WorkflowExecResult();
+        record.setCreatedBy(BigInteger.ONE.toString());
+        when(execResultService.getByExecKey("execution-1")).thenReturn(record);
+
+        PluginItemController controller = new PluginItemController(pluginItemService);
+        setField(controller, "workflowExecResultService", execResultService);
+        setField(controller, "workflowResumeService", resumeService);
+        LoginAccount currentAccount = new LoginAccount();
+        currentAccount.setId(BigInteger.ONE);
+
+        try (MockedStatic<SaTokenUtil> login = mockStatic(SaTokenUtil.class)) {
+            login.when(SaTokenUtil::getLoginAccount).thenReturn(currentAccount);
+            controller.pluginToolTestResume("execution-1", Map.of("choice", "A"));
+        }
+        verify(resumeService).resume("execution-1", Map.of("choice", "A"));
+    }
+
     /**
      * 创建插件工具。
      *

easyflow-api/easyflow-api-admin/src/test/java/tech/easyflow/admin/service/ai/WorkflowDesignerOptionServiceTest.java

@@ -6,7 +6,10 @@ import org.mockito.MockedStatic;
 import org.testng.Assert;
 import org.testng.annotations.Test;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowDatacenterContentService;
+import tech.easyflow.ai.easyagentsflow.knowledge.WorkflowKnowledgeContractService;
 import tech.easyflow.ai.entity.Model;
+import tech.easyflow.ai.entity.ModelProvider;
+import tech.easyflow.ai.entity.DocumentCollection;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.plugin.workflow.snapshot.WorkflowPluginSnapshotResolver;
 import tech.easyflow.ai.service.DocumentCollectionService;
@@ -129,6 +132,96 @@ public class WorkflowDesignerOptionServiceTest {
         }
     }
 
+    @Test
+    public void shouldAcceptCompatibleMultiKnowledgeReferences() {
+        ModelService modelService = mock(ModelService.class);
+        DocumentCollectionService knowledgeService =
+                mock(DocumentCollectionService.class);
+        ResourceAccessService accessService = mock(ResourceAccessService.class);
+        when(accessService.canAccess(any(), any(), any(), any()))
+                .thenReturn(true);
+        when(knowledgeService.listByIds(any()))
+                .thenReturn(List.of(
+                        knowledge(1, 7, 3),
+                        knowledge(2, 7, 3)));
+        when(modelService.listModelInstances(any()))
+                .thenReturn(List.of(embeddingModel(7)));
+        WorkflowDesignerOptionService service = createService(
+                modelService,
+                knowledgeService,
+                mock(DatacenterSourceService.class),
+                mock(WorkflowService.class),
+                accessService);
+
+        try (MockedStatic<SaTokenUtil> saToken = mockStatic(SaTokenUtil.class)) {
+            saToken.when(SaTokenUtil::getLoginAccount).thenReturn(loginAccount());
+
+            service.assertContentReferences("""
+                    {"nodes":[{"type":"knowledgeNode","data":{
+                      "knowledgeIds":["1","2"],"retrievalMode":"VECTOR"
+                    }}]}
+                    """);
+        }
+    }
+
+    @Test
+    public void shouldRejectIncompatibleMultiKnowledgeReferences() {
+        ModelService modelService = mock(ModelService.class);
+        DocumentCollectionService knowledgeService =
+                mock(DocumentCollectionService.class);
+        ResourceAccessService accessService = mock(ResourceAccessService.class);
+        when(accessService.canAccess(any(), any(), any(), any()))
+                .thenReturn(true);
+        when(knowledgeService.listByIds(any()))
+                .thenReturn(List.of(
+                        knowledge(1, 7, 3),
+                        knowledge(2, 8, 3)));
+        when(modelService.listModelInstances(any()))
+                .thenReturn(List.of(embeddingModel(7), embeddingModel(8)));
+        WorkflowDesignerOptionService service = createService(
+                modelService,
+                knowledgeService,
+                mock(DatacenterSourceService.class),
+                mock(WorkflowService.class),
+                accessService);
+
+        try (MockedStatic<SaTokenUtil> saToken = mockStatic(SaTokenUtil.class)) {
+            saToken.when(SaTokenUtil::getLoginAccount).thenReturn(loginAccount());
+
+            BusinessException exception = Assert.expectThrows(
+                    BusinessException.class,
+                    () -> service.assertContentReferences("""
+                            {"nodes":[{"type":"knowledgeNode","data":{
+                              "knowledgeIds":["1","2"],"retrievalMode":"VECTOR"
+                            }}]}
+                            """));
+
+            Assert.assertTrue(exception.getMessage().contains("Embedding"));
+        }
+    }
+
+    @Test
+    public void shouldRejectConflictingRootAndDataNodeTypes() {
+        WorkflowDesignerOptionService service = createService(
+                mock(ModelService.class),
+                mock(DocumentCollectionService.class),
+                mock(DatacenterSourceService.class));
+
+        try (MockedStatic<SaTokenUtil> saToken = mockStatic(SaTokenUtil.class)) {
+            saToken.when(SaTokenUtil::getLoginAccount).thenReturn(loginAccount());
+
+            BusinessException exception = Assert.expectThrows(
+                    BusinessException.class,
+                    () -> service.assertContentReferences("""
+                            {"nodes":[{"type":"knowledgeNode","data":{
+                              "type":"llmNode","knowledgeId":"1"
+                            }}]}
+                            """));
+
+            Assert.assertTrue(exception.getMessage().contains("类型"));
+        }
+    }
+
     private WorkflowDesignerOptionService createService(
             ModelService modelService,
             DocumentCollectionService knowledgeService,
@@ -142,6 +235,20 @@ public class WorkflowDesignerOptionServiceTest {
             DatacenterSourceService sourceService,
             WorkflowService workflowService) {
         ResourceAccessService resourceAccessService = mock(ResourceAccessService.class);
+        return createService(
+                modelService,
+                knowledgeService,
+                sourceService,
+                workflowService,
+                resourceAccessService);
+    }
+
+    private WorkflowDesignerOptionService createService(
+            ModelService modelService,
+            DocumentCollectionService knowledgeService,
+            DatacenterSourceService sourceService,
+            WorkflowService workflowService,
+            ResourceAccessService resourceAccessService) {
         return new WorkflowDesignerOptionService(
                 modelService,
                 knowledgeService,
@@ -156,10 +263,40 @@ public class WorkflowDesignerOptionServiceTest {
                 resourceAccessService,
                 sourceService,
                 mock(DatacenterDatasetRegistryService.class),
-                mock(DatacenterDatasetQueryService.class)
+                mock(DatacenterDatasetQueryService.class),
+                new WorkflowKnowledgeContractService(
+                        knowledgeService, modelService)
         );
     }
 
+    private DocumentCollection knowledge(
+            long id, long embeddingModelId, int dimension) {
+        DocumentCollection collection = new DocumentCollection();
+        collection.setId(BigInteger.valueOf(id));
+        collection.setTenantId(BigInteger.valueOf(100));
+        collection.setVectorEmbedModelId(BigInteger.valueOf(embeddingModelId));
+        collection.setDimensionOfVectorModel(dimension);
+        collection.setVectorStoreEnable(true);
+        collection.setVectorStoreCollection("collection_" + id);
+        return collection;
+    }
+
+    private Model embeddingModel(long id) {
+        Model model = new Model();
+        model.setId(BigInteger.valueOf(id));
+        model.setTenantId(BigInteger.valueOf(100));
+        model.setModelType(Model.MODEL_TYPES[1]);
+        model.setProviderId(BigInteger.ONE);
+        model.setModelName("embedding-" + id);
+        model.setEndpoint("https://embedding.example");
+        model.setRequestPath("/v1/embeddings");
+        ModelProvider provider = new ModelProvider();
+        provider.setId(BigInteger.ONE);
+        provider.setProviderType("openai");
+        model.setModelProvider(provider);
+        return model;
+    }
+
     private LoginAccount loginAccount() {
         LoginAccount account = new LoginAccount();
         account.setId(BigInteger.ONE);

easyflow-api/easyflow-api-admin/src/test/java/tech/easyflow/admin/service/ai/WorkflowPublicChatServiceTest.java

@@ -12,6 +12,7 @@ import org.testng.Assert;
 import org.testng.annotations.Test;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowRunningParameterResolver;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.easyagentsflow.support.PublishedWorkflowDefinitionIds;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.entity.WorkflowExecResult;
@@ -162,6 +163,8 @@ public class WorkflowPublicChatServiceTest {
         WorkflowChatEventStream eventStream = mock(
                 WorkflowChatEventStream.class);
         ChainExecutor chainExecutor = mock(ChainExecutor.class);
+        WorkflowResumeService workflowResumeService =
+                mock(WorkflowResumeService.class);
         WorkflowExecResultService execResultService = mock(
                 WorkflowExecResultService.class);
         WorkflowExecStepService execStepService = mock(
@@ -196,6 +199,7 @@ public class WorkflowPublicChatServiceTest {
                 accessGuard,
                 eventStream,
                 chainExecutor,
+                workflowResumeService,
                 execResultService,
                 execStepService
         );

easyflow-api/easyflow-api-public/src/main/java/tech/easyflow/publicapi/controller/PublicKnowledgeShareController.java

@@ -1,10 +1,6 @@
 package tech.easyflow.publicapi.controller;
 
 import cn.hutool.core.io.IoUtil;
-import com.easyagents.core.model.embedding.EmbeddingModel;
-import com.easyagents.core.store.DocumentStore;
-import com.easyagents.core.store.StoreOptions;
-import com.easyagents.core.store.StoreResult;
 import com.mybatisflex.core.paginate.Page;
 import com.mybatisflex.core.query.QueryWrapper;
 import jakarta.servlet.http.HttpServletRequest;
@@ -18,11 +14,15 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 import tech.easyflow.ai.documentimport.DocumentImportDtos;
+import tech.easyflow.ai.dto.DocumentChunkDeleteResult;
+import tech.easyflow.ai.dto.DocumentChunkAsyncUpdateResult;
+import tech.easyflow.ai.dto.DocumentChunkSyncRetryRequest;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatus;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatusRequest;
 import tech.easyflow.ai.entity.Document;
 import tech.easyflow.ai.entity.DocumentChunk;
 import tech.easyflow.ai.entity.DocumentCollection;
 import tech.easyflow.ai.entity.FaqItem;
-import tech.easyflow.ai.entity.Model;
 import tech.easyflow.ai.enums.KnowledgeApiPermissionScope;
 import tech.easyflow.ai.rag.KnowledgeRetrievalModes;
 import tech.easyflow.ai.rag.KnowledgeRetrievalRequest;
@@ -33,9 +33,7 @@ import tech.easyflow.ai.service.FaqCategoryService;
 import tech.easyflow.ai.service.FaqItemService;
 import tech.easyflow.ai.service.KnowledgeShareAuditService;
 import tech.easyflow.ai.service.KnowledgeSharePermissionService;
-import tech.easyflow.ai.service.ModelService;
 import tech.easyflow.ai.service.impl.KnowledgeSharePermissionServiceImpl;
-import tech.easyflow.ai.support.DocumentStoreLifecycleSupport;
 import tech.easyflow.ai.vo.FaqImportResultVo;
 import tech.easyflow.common.domain.Result;
 import tech.easyflow.common.filestorage.FileStorageService;
@@ -81,8 +79,6 @@ public class PublicKnowledgeShareController {
     private FaqItemService faqItemService;
     @Resource
     private FaqCategoryService faqCategoryService;
-    @Resource
-    private ModelService modelService;
     @Resource(name = "default")
     private FileStorageService fileStorageService;
 
@@ -351,37 +347,20 @@ public class PublicKnowledgeShareController {
     public Result<?> updateDocumentChunk(
         @RequestHeader("ApiKey") String apiKey,
         @JsonBody(value = "knowledgeId", required = true) BigInteger knowledgeId,
-        @JsonBody DocumentChunk documentChunk,
+        @JsonBody(required = true, skipConvertError = false)
+        DocumentChunk documentChunk,
         HttpServletRequest request
     ) {
         assertApiShare(apiKey, request.getRequestURI(), knowledgeId, KnowledgeApiPermissionScope.KNOWLEDGE_MAINTENANCE.name());
         requireDocumentKnowledge(knowledgeId);
         DocumentChunk current = requireDocumentChunk(documentChunk.getId(), knowledgeId);
-        boolean success = documentChunkService.updateById(documentChunk);
+        DocumentChunk updated = documentChunkService.updateContent(
-        if (success) {
+            knowledgeId,
-            DocumentCollection knowledge = documentCollectionService.getById(knowledgeId);
+            current.getId(),
-            DocumentStore documentStore = knowledge.toDocumentStore();
+            documentChunk.getContent()
-            if (documentStore == null) {
+        );
-                return Result.fail(2, "知识库没有配置向量库");
+        audit(apiKey, "API更新文档 Chunk", "KNOWLEDGE_API_SHARE_WRITE", request.getRequestURI(), Map.of("knowledgeId", knowledgeId, "chunkId", documentChunk.getId()));
-            }
+        return Result.ok(DocumentChunkAsyncUpdateResult.from(updated));
-            try {
-                Model model = modelService.getModelInstance(knowledge.getVectorEmbedModelId());
-                if (model == null) {
-                    return Result.fail(3, "知识库没有配置向量模型");
-                }
-                EmbeddingModel embeddingModel = model.toEmbeddingModel();
-                documentStore.setEmbeddingModel(embeddingModel);
-                StoreOptions options = StoreOptions.ofCollectionName(knowledge.getVectorStoreCollection());
-                com.easyagents.core.document.Document doc = com.easyagents.core.document.Document.of(documentChunk.getContent());
-                doc.setId(current.getId());
-                StoreResult result = documentStore.update(doc, options);
-                audit(apiKey, "API更新文档 Chunk", "KNOWLEDGE_API_SHARE_WRITE", request.getRequestURI(), Map.of("knowledgeId", knowledgeId, "chunkId", documentChunk.getId()));
-                return Result.ok(result);
-            } finally {
-                DocumentStoreLifecycleSupport.closeQuietly(documentStore);
-            }
-        }
-        return Result.ok(false);
     }
 
     /**
@@ -397,25 +376,51 @@ public class PublicKnowledgeShareController {
         assertApiShare(apiKey, request.getRequestURI(), knowledgeId, KnowledgeApiPermissionScope.KNOWLEDGE_MAINTENANCE.name());
         requireDocumentKnowledge(knowledgeId);
         requireDocumentChunk(chunkId, knowledgeId);
-        DocumentCollection knowledge = documentCollectionService.getById(knowledgeId);
+        DocumentChunkDeleteResult removed = documentChunkService.deleteChunk(
-        DocumentStore documentStore = knowledge.toDocumentStore();
+            knowledgeId,
-        if (documentStore == null) {
+            chunkId
-            return Result.fail(2, "知识库没有配置向量库");
+        );
-        }
+        audit(apiKey, "API删除文档 Chunk", "KNOWLEDGE_API_SHARE_WRITE", request.getRequestURI(), Map.of("knowledgeId", knowledgeId, "chunkId", chunkId));
-        try {
+        return Result.ok(removed != null);
-            Model model = modelService.getModelInstance(knowledge.getVectorEmbedModelId());
+    }
-            if (model == null) {
+
-                return Result.fail(3, "知识库没有配置向量模型");
+    @PostMapping("/documentChunk/syncStatus")
-            }
+    public Result<List<DocumentChunkSyncStatus>> documentChunkSyncStatus(
-            documentStore.setEmbeddingModel(model.toEmbeddingModel());
+        @RequestHeader("ApiKey") String apiKey,
-            StoreOptions options = StoreOptions.ofCollectionName(knowledge.getVectorStoreCollection());
+        @JsonBody(value = "knowledgeId", required = true) BigInteger knowledgeId,
-            documentStore.delete(Collections.singletonList(chunkId), options);
+        @JsonBody(required = true, skipConvertError = false)
-            documentChunkService.removeById(chunkId);
+        DocumentChunkSyncStatusRequest statusRequest,
-            audit(apiKey, "API删除文档 Chunk", "KNOWLEDGE_API_SHARE_WRITE", request.getRequestURI(), Map.of("knowledgeId", knowledgeId, "chunkId", chunkId));
+        HttpServletRequest request
-            return Result.ok(true);
+    ) {
-        } finally {
+        assertApiShare(apiKey, request.getRequestURI(), knowledgeId,
-            DocumentStoreLifecycleSupport.closeQuietly(documentStore);
+            KnowledgeApiPermissionScope.KNOWLEDGE_READ.name());
+        requireDocumentKnowledge(knowledgeId);
+        requireDocument(statusRequest.getDocumentId(), knowledgeId);
+        return Result.ok(documentChunkService.listIndexSyncStatus(
+            knowledgeId, statusRequest.getDocumentId(), statusRequest.getIds()
+        ));
+    }
+
+    @PostMapping("/documentChunk/retrySync")
+    public Result<DocumentChunk> retryDocumentChunkSync(
+        @RequestHeader("ApiKey") String apiKey,
+        @JsonBody(value = "knowledgeId", required = true) BigInteger knowledgeId,
+        @JsonBody(required = true, skipConvertError = false)
+        DocumentChunkSyncRetryRequest retryRequest,
+        HttpServletRequest request
+    ) {
+        assertApiShare(apiKey, request.getRequestURI(), knowledgeId,
+            KnowledgeApiPermissionScope.KNOWLEDGE_MAINTENANCE.name());
+        requireDocumentKnowledge(knowledgeId);
+        if (retryRequest.getIndexSyncVersion() == null) {
+            throw new BusinessException("同步版本不能为空");
         }
+        DocumentChunk chunk = documentChunkService.retryIndexSync(
+            knowledgeId, retryRequest.getId(), retryRequest.getIndexSyncVersion()
+        );
+        audit(apiKey, "API重试文档 Chunk 索引同步", "KNOWLEDGE_API_SHARE_WRITE",
+            request.getRequestURI(), Map.of("knowledgeId", knowledgeId, "chunkId", retryRequest.getId()));
+        return Result.ok(chunk);
     }
 
     /**

easyflow-api/easyflow-api-public/src/main/java/tech/easyflow/publicapi/controller/PublicWorkflowController.java

@@ -18,6 +18,7 @@ import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.easyagentsflow.service.TinyFlowService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowRunningParameterResolver;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.easyagentsflow.support.PublishedWorkflowDefinitionIds;
 import tech.easyflow.ai.easyagentsflow.upload.WorkflowApiPreparedUpload;
 import tech.easyflow.ai.easyagentsflow.upload.WorkflowApiUploadLifecycleService;
@@ -70,6 +71,8 @@ public class PublicWorkflowController {
     @Resource
     private WorkflowRunningParameterResolver workflowRunningParameterResolver;
     @Resource
+    private WorkflowResumeService workflowResumeService;
+    @Resource
     private WorkflowApiPermissionService workflowApiPermissionService;
     @Resource
     private WorkflowExecResultService workflowExecResultService;
@@ -250,14 +253,7 @@ public class PublicWorkflowController {
         SysApiKey apiKey = workflowApiPermissionService.assertWorkflowApi(request.getHeader("ApiKey"), request.getRequestURI());
         WorkflowExecResult execResult = assertApiKeyExecutionOwnership(apiKey, executeId);
         assertWorkflowExecutionResumable(execResult);
-        if (!chainExecutor.resumeAsyncIfSuspended(
+        workflowResumeService.resume(executeId, confirmParams);
-                executeId,
-                confirmParams)) {
-            throw new BusinessException(
-                    409,
-                    40901,
-                    "当前执行状态不可恢复，仅暂停中的工作流允许恢复");
-        }
         return Result.ok();
     }
 

easyflow-api/easyflow-api-public/src/main/java/tech/easyflow/publicapi/error/WorkflowRunAsyncErrorProfile.java

@@ -394,6 +394,7 @@ public final class WorkflowRunAsyncErrorProfile
      */
     private boolean isStableBusinessCode(int code) {
         return (code >= 40011 && code <= 40017)
+                || code == 40031
                 || (code >= 40101 && code <= 40103)
                 || (code >= 40301 && code <= 40302)
                 || (code >= 40401 && code <= 40402)
@@ -412,7 +413,8 @@ public final class WorkflowRunAsyncErrorProfile
      * @return 对外 HTTP 状态
      */
     private int normalizeHttpStatus(int code, int fallback) {
-        if (code >= 40011 && code <= 40017) {
+        if ((code >= 40011 && code <= 40017)
+                || code == 40031) {
             return 400;
         }
         if (code >= 40101 && code <= 40103) {

easyflow-api/easyflow-api-public/src/test/java/tech/easyflow/publicapi/controller/PublicKnowledgeShareControllerContractTest.java

@@ -66,6 +66,8 @@ public class PublicKnowledgeShareControllerContractTest {
         JsonBody chunkBody = chunk.getAnnotation(JsonBody.class);
         Assert.assertNotNull(chunkBody);
         Assert.assertEquals("", chunkBody.value());
+        Assert.assertTrue(chunkBody.required());
+        Assert.assertFalse(chunkBody.skipConvertError());
     }
 
     /**

easyflow-api/easyflow-api-public/src/test/java/tech/easyflow/publicapi/controller/PublicWorkflowControllerBehaviorTest.java

@@ -12,6 +12,7 @@ import org.springframework.test.util.ReflectionTestUtils;
 import tech.easyflow.ai.easyagentsflow.entity.ChainInfo;
 import tech.easyflow.ai.easyagentsflow.entity.NodeInfo;
 import tech.easyflow.ai.easyagentsflow.service.TinyFlowService;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.entity.WorkflowExecResult;
 import tech.easyflow.ai.enums.PublishStatus;
@@ -44,6 +45,7 @@ public class PublicWorkflowControllerBehaviorTest {
 
     private PublicWorkflowController controller;
     private ChainExecutor chainExecutor;
+    private WorkflowResumeService workflowResumeService;
     private TinyFlowService tinyFlowService;
     private HttpServletRequest request;
 
@@ -54,6 +56,7 @@ public class PublicWorkflowControllerBehaviorTest {
     public void setUp() {
         controller = new PublicWorkflowController();
         chainExecutor = Mockito.mock(ChainExecutor.class);
+        workflowResumeService = Mockito.mock(WorkflowResumeService.class);
         tinyFlowService = Mockito.mock(TinyFlowService.class);
         WorkflowApiPermissionService permissionService =
                 Mockito.mock(WorkflowApiPermissionService.class);
@@ -79,6 +82,10 @@ public class PublicWorkflowControllerBehaviorTest {
                 controller,
                 "chainExecutor",
                 chainExecutor);
+        ReflectionTestUtils.setField(
+                controller,
+                "workflowResumeService",
+                workflowResumeService);
         ReflectionTestUtils.setField(
                 controller,
                 "tinyFlowService",
@@ -108,10 +115,12 @@ public class PublicWorkflowControllerBehaviorTest {
     public void resumeShouldRejectNonSuspendedExecution() {
         when(request.getRequestURI()).thenReturn(
                 "/public-api/workflow/resume");
-        when(chainExecutor.resumeAsyncIfSuspended(
+        Mockito.doThrow(new BusinessException(
-                EXECUTE_ID,
+                        409,
-                Map.of("approved", true)))
+                        40901,
-                .thenReturn(false);
+                        "当前执行状态不可恢复，仅暂停中的工作流允许恢复"))
+                .when(workflowResumeService)
+                .resume(EXECUTE_ID, Map.of("approved", true));
 
         try {
             controller.resume(
@@ -124,7 +133,7 @@ public class PublicWorkflowControllerBehaviorTest {
             Assert.assertEquals(40901, exception.getErrorCode());
         }
 
-        verify(chainExecutor).resumeAsyncIfSuspended(
+        verify(workflowResumeService).resume(
                 EXECUTE_ID,
                 Map.of("approved", true));
     }

easyflow-api/easyflow-api-public/src/test/java/tech/easyflow/publicapi/error/WorkflowRunAsyncErrorProfileTest.java

@@ -167,6 +167,28 @@ public class WorkflowRunAsyncErrorProfileTest {
                 resolution.modelAndView.getModel().get("message"));
     }
 
+    /**
+     * 验证确认节点恢复校验保留专用错误码，不回退为运行参数错误。
+     */
+    @Test
+    public void shouldKeepResumeValidationCode() {
+        Resolution resolution = resolve(
+                "/public-api/workflow/resume",
+                MediaType.APPLICATION_JSON_VALUE,
+                new BusinessException(
+                        400,
+                        40031,
+                        "确认参数[模板类型]包含未配置选项"));
+
+        Assert.assertEquals(400, resolution.response.getStatus());
+        Assert.assertEquals(
+                40031,
+                resolution.modelAndView.getModel().get("errorCode"));
+        Assert.assertEquals(
+                "确认参数[模板类型]包含未配置选项",
+                resolution.modelAndView.getModel().get("message"));
+    }
+
     /**
      * 验证 API Key 无效和两层权限错误保持可区分。
      */

easyflow-api/easyflow-api-usercenter/src/main/java/tech/easyflow/usercenter/controller/ai/UcWorkflowController.java

@@ -13,6 +13,7 @@ import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.easyagentsflow.service.TinyFlowService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowRunningParameterResolver;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowResumeService;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.service.WorkflowService;
 import tech.easyflow.common.annotation.UsePermission;
@@ -54,6 +55,8 @@ public class UcWorkflowController extends BaseCurdController<WorkflowService, Wo
     @Resource
     private WorkflowRunningParameterResolver workflowRunningParameterResolver;
     @Resource
+    private WorkflowResumeService workflowResumeService;
+    @Resource
     private WorkflowVisibilityQueryHelper workflowVisibilityQueryHelper;
 
     public UcWorkflowController(WorkflowService service) {
@@ -163,12 +166,7 @@ public class UcWorkflowController extends BaseCurdController<WorkflowService, Wo
     )
     public Result<Void> resume(@JsonBody(value = "executeId", required = true) String executeId,
                                @JsonBody("confirmParams") Map<String, Object> confirmParams) {
-        if (!chainExecutor.resumeAsyncIfSuspended(executeId, confirmParams)) {
+        workflowResumeService.resume(executeId, confirmParams);
-            throw new BusinessException(
-                    409,
-                    40901,
-                    "当前执行状态不可恢复，仅暂停中的工作流允许恢复");
-        }
         return Result.ok();
     }
 

easyflow-modules/easyflow-module-agent/src/main/java/tech/easyflow/agent/runtime/asynctool/AbstractAgentAsyncSubTools.java

@@ -67,7 +67,9 @@ public abstract class AbstractAgentAsyncSubTools implements AsyncSubTools {
      * @param arguments 调用参数
      * @return 执行结果
      */
-    protected abstract AgentToolExecutionResult executeBusiness(Map<String, Object> arguments);
+    protected abstract AgentToolExecutionResult executeBusiness(
+            Map<String, Object> arguments,
+            AgentToolContext context);
 
     /**
      * {@inheritDoc}
@@ -92,7 +94,7 @@ public abstract class AbstractAgentAsyncSubTools implements AsyncSubTools {
         record.getMetadata().put("toolDisplayName", displayName());
         appendEvent(record, "SUBMITTED", displayName() + "任务已提交");
         taskStore.create(record);
-        dispatch(sessionId, record.getTaskId(), record.getArguments());
+        dispatch(sessionId, record.getTaskId(), record.getArguments(), context);
 
         AsyncToolSubmitResult result = new AsyncToolSubmitResult();
         result.setTaskId(taskId);
@@ -157,16 +159,23 @@ public abstract class AbstractAgentAsyncSubTools implements AsyncSubTools {
         return result;
     }
 
-    private void dispatch(String sessionId, String taskId, Map<String, Object> arguments) {
+    private void dispatch(String sessionId,
+                          String taskId,
+                          Map<String, Object> arguments,
+                          AgentToolContext context) {
         try {
-            taskExecutor.execute(() -> executeTask(sessionId, taskId, arguments));
+            taskExecutor.execute(() -> executeTask(
+                    sessionId, taskId, arguments, context));
         } catch (Exception e) {
             taskStore.update(sessionId, taskId, record -> fail(record, e));
             throw new BusinessException("提交异步工具任务失败：" + safeMessage(e));
         }
     }
 
-    private void executeTask(String sessionId, String taskId, Map<String, Object> arguments) {
+    private void executeTask(String sessionId,
+                             String taskId,
+                             Map<String, Object> arguments,
+                             AgentToolContext context) {
         try {
             taskStore.update(sessionId, taskId, record -> {
                 record.setStatus(AsyncToolTaskStatus.RUNNING);
@@ -174,7 +183,8 @@ public abstract class AbstractAgentAsyncSubTools implements AsyncSubTools {
                 appendEvent(record, "RUNNING", displayName() + "任务执行中");
                 return record;
             });
-            AgentToolExecutionResult executionResult = executeBusiness(arguments);
+            AgentToolExecutionResult executionResult = executeBusiness(
+                    arguments, context);
             taskStore.update(sessionId, taskId, record -> {
                 record.setStatus(AsyncToolTaskStatus.SUCCEEDED);
                 record.setSummary(displayName() + "任务已完成");

easyflow-modules/easyflow-module-agent/src/main/java/tech/easyflow/agent/runtime/asynctool/PluginAsyncSubTools.java

@@ -1,5 +1,6 @@
 package tech.easyflow.agent.runtime.asynctool;
 
+import com.easyagents.agent.runtime.tool.AgentToolContext;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 import tech.easyflow.agent.enums.AgentToolType;
 import tech.easyflow.agent.runtime.tool.AgentToolExecutionResult;
@@ -82,7 +83,9 @@ public class PluginAsyncSubTools extends AbstractAgentAsyncSubTools {
      * {@inheritDoc}
      */
     @Override
-    protected AgentToolExecutionResult executeBusiness(Map<String, Object> arguments) {
+    protected AgentToolExecutionResult executeBusiness(
+            Map<String, Object> arguments,
+            AgentToolContext context) {
         return pluginToolExecutor.execute(pluginItem, plugin, arguments);
     }
 }

easyflow-modules/easyflow-module-agent/src/main/java/tech/easyflow/agent/runtime/asynctool/WorkflowAsyncSubTools.java

@@ -1,5 +1,6 @@
 package tech.easyflow.agent.runtime.asynctool;
 
+import com.easyagents.agent.runtime.tool.AgentToolContext;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 import tech.easyflow.agent.enums.AgentToolType;
 import tech.easyflow.agent.runtime.tool.AgentToolExecutionResult;
@@ -77,7 +78,9 @@ public class WorkflowAsyncSubTools extends AbstractAgentAsyncSubTools {
      * {@inheritDoc}
      */
     @Override
-    protected AgentToolExecutionResult executeBusiness(Map<String, Object> arguments) {
+    protected AgentToolExecutionResult executeBusiness(
-        return workflowToolExecutor.execute(workflow, arguments);
+            Map<String, Object> arguments,
+            AgentToolContext context) {
+        return workflowToolExecutor.execute(workflow, arguments, context);
     }
 }

easyflow-modules/easyflow-module-agent/src/main/java/tech/easyflow/agent/runtime/tool/AgentToolRuntimeCompiler.java

@@ -161,7 +161,7 @@ public class AgentToolRuntimeCompiler {
             Tool tool = workflowToolExecutor.buildTool(workflow);
             AgentToolSpec spec = toToolSpec(tool, binding);
             AgentToolInvoker invoker = (arguments, context) -> invokeSafely(spec.getName(), binding, context,
-                    () -> workflowToolExecutor.execute(workflow, arguments).getResult());
+                    () -> workflowToolExecutor.execute(workflow, arguments, context).getResult());
             return new CompiledSyncTool(spec, invoker);
         }
         if (type == AgentToolType.PLUGIN) {

easyflow-modules/easyflow-module-agent/src/main/java/tech/easyflow/agent/runtime/tool/WorkflowToolExecutor.java

@@ -2,13 +2,19 @@ package tech.easyflow.agent.runtime.tool;
 
 import com.easyagents.flow.core.chain.runtime.ChainExecutor;
 import com.easyagents.core.model.chat.tool.Tool;
+import com.easyagents.agent.runtime.AgentRuntimeContext;
+import com.easyagents.agent.runtime.tool.AgentToolContext;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import tech.easyflow.ai.easyagents.tool.WorkflowTool;
 import tech.easyflow.ai.easyagentsflow.repository.FrozenWorkflowDefinitionRegistry;
 import tech.easyflow.ai.easyagentsflow.support.PublishedWorkflowDefinitionIds;
 import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.common.constant.Constants;
+import tech.easyflow.common.entity.LoginAccount;
 
+import java.math.BigInteger;
+import java.util.LinkedHashMap;
 import java.util.Map;
 
 /**
@@ -59,11 +65,63 @@ public class WorkflowToolExecutor {
      * @return 执行结果
      */
     public AgentToolExecutionResult execute(Workflow workflow, Map<String, Object> arguments) {
+        return execute(workflow, arguments, null);
+    }
+
+    /**
+     * 使用 Agent 调用身份执行 Workflow 工具。
+     *
+     * @param workflow 工作流
+     * @param arguments 执行参数
+     * @param context Agent 工具上下文
+     * @return 执行结果
+     */
+    public AgentToolExecutionResult execute(Workflow workflow,
+                                            Map<String, Object> arguments,
+                                            AgentToolContext context) {
+        Map<String, Object> variables = arguments == null
+                ? new LinkedHashMap<>()
+                : new LinkedHashMap<>(arguments);
+        variables.remove(Constants.LOGIN_USER_KEY);
+        LoginAccount account = toLoginAccount(context);
+        if (account != null) {
+            variables.put(Constants.LOGIN_USER_KEY, account);
+        }
         Object result = chainExecutor.executeWithoutSuspension(
-                definitionId(workflow), arguments == null ? Map.of() : arguments);
+                definitionId(workflow), variables);
         return new AgentToolExecutionResult(result, resolveBusinessExecutionId(result));
     }
 
+    private LoginAccount toLoginAccount(AgentToolContext context) {
+        AgentRuntimeContext runtimeContext = context == null
+                ? null
+                : context.getRuntimeContext();
+        BigInteger userId = positiveId(runtimeContext == null
+                ? null
+                : runtimeContext.getUserId());
+        BigInteger tenantId = positiveId(runtimeContext == null
+                ? null
+                : runtimeContext.getTenantId());
+        if (userId == null || tenantId == null) {
+            return null;
+        }
+        LoginAccount account = new LoginAccount();
+        account.setId(userId);
+        account.setTenantId(tenantId);
+        account.setLoginName(runtimeContext.getUserName());
+        account.setNickname(runtimeContext.getUserName());
+        return account;
+    }
+
+    private BigInteger positiveId(String value) {
+        try {
+            BigInteger id = new BigInteger(value);
+            return id.signum() > 0 ? id : null;
+        } catch (RuntimeException exception) {
+            return null;
+        }
+    }
+
     private String definitionId(Workflow workflow) {
         if (frozenDefinitionRegistry != null && workflow != null
                 && workflow.getContent() != null && !workflow.getContent().isBlank()) {

easyflow-modules/easyflow-module-agent/src/test/java/tech/easyflow/agent/runtime/asynctool/AbstractAgentAsyncSubToolsTest.java

@@ -146,7 +146,9 @@ public class AbstractAgentAsyncSubToolsTest {
         }
 
         @Override
-        protected AgentToolExecutionResult executeBusiness(Map<String, Object> arguments) {
+        protected AgentToolExecutionResult executeBusiness(
+                Map<String, Object> arguments,
+                AgentToolContext context) {
             return new AgentToolExecutionResult(Map.of("echo", arguments.get("keyword")), "business-run-1");
         }
     }

easyflow-modules/easyflow-module-agent/src/test/java/tech/easyflow/agent/runtime/asynctool/WorkflowPluginAsyncSubToolsTest.java

@@ -153,7 +153,10 @@ public class WorkflowPluginAsyncSubToolsTest {
         }
 
         @Override
-        public AgentToolExecutionResult execute(Workflow workflow, Map<String, Object> arguments) {
+        public AgentToolExecutionResult execute(
+                Workflow workflow,
+                Map<String, Object> arguments,
+                AgentToolContext context) {
             return new AgentToolExecutionResult(businessResult, "workflow-run-1");
         }
     }

easyflow-modules/easyflow-module-agent/src/test/java/tech/easyflow/agent/runtime/tool/AgentToolRuntimeCompilerTest.java

@@ -145,7 +145,10 @@ public class AgentToolRuntimeCompilerTest {
             }
 
             @Override
-            public AgentToolExecutionResult execute(Workflow workflow, Map<String, Object> arguments) {
+            public AgentToolExecutionResult execute(
+                    Workflow workflow,
+                    Map<String, Object> arguments,
+                    AgentToolContext context) {
                 throw new IllegalStateException("jdbc:mysql://internal:3306 secret-token");
             }
         });
@@ -262,7 +265,10 @@ public class AgentToolRuntimeCompilerTest {
         }
 
         @Override
-        public AgentToolExecutionResult execute(Workflow workflow, Map<String, Object> arguments) {
+        public AgentToolExecutionResult execute(
+                Workflow workflow,
+                Map<String, Object> arguments,
+                AgentToolContext context) {
             return new AgentToolExecutionResult(Map.of("ok", true), "wf-run-1");
         }
     }

easyflow-modules/easyflow-module-agent/src/test/java/tech/easyflow/agent/runtime/tool/WorkflowToolExecutorTest.java

@@ -0,0 +1,100 @@
+package tech.easyflow.agent.runtime.tool;
+
+import com.easyagents.agent.runtime.AgentRuntimeContext;
+import com.easyagents.agent.runtime.tool.AgentToolContext;
+import com.easyagents.flow.core.chain.runtime.ChainExecutor;
+import org.junit.Assert;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import tech.easyflow.ai.easyagentsflow.repository.FrozenWorkflowDefinitionRegistry;
+import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.common.constant.Constants;
+import tech.easyflow.common.entity.LoginAccount;
+
+import java.math.BigInteger;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import static org.mockito.ArgumentMatchers.anyMap;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * Agent Workflow 工具调用上下文测试。
+ */
+public class WorkflowToolExecutorTest {
+
+    @Test
+    @SuppressWarnings("unchecked")
+    public void shouldForwardAgentIdentityToFrozenWorkflowVariables() {
+        ChainExecutor chainExecutor = mock(ChainExecutor.class);
+        FrozenWorkflowDefinitionRegistry registry =
+                mock(FrozenWorkflowDefinitionRegistry.class);
+        Workflow workflow = new Workflow();
+        workflow.setId(BigInteger.valueOf(101));
+        workflow.setContent("{\"nodes\":[]}");
+        when(registry.register(workflow)).thenReturn("agent-frozen:101:hash");
+        when(chainExecutor.executeWithoutSuspension(anyString(), anyMap()))
+                .thenReturn(Map.of("ok", true));
+        WorkflowToolExecutor executor = new WorkflowToolExecutor(
+                chainExecutor, registry);
+
+        AgentRuntimeContext runtimeContext = new AgentRuntimeContext();
+        runtimeContext.setUserId("7");
+        runtimeContext.setTenantId("9");
+        runtimeContext.setUserName("测试用户");
+        AgentToolContext context = new AgentToolContext();
+        context.setRuntimeContext(runtimeContext);
+        Map<String, Object> arguments = new LinkedHashMap<>();
+        arguments.put("question", "问题");
+        LoginAccount forgedAccount = new LoginAccount();
+        forgedAccount.setId(BigInteger.valueOf(999));
+        forgedAccount.setTenantId(BigInteger.valueOf(999));
+        arguments.put(Constants.LOGIN_USER_KEY, forgedAccount);
+
+        executor.execute(workflow, arguments, context);
+
+        ArgumentCaptor<Map<String, Object>> variables =
+                ArgumentCaptor.forClass(Map.class);
+        verify(chainExecutor).executeWithoutSuspension(
+                org.mockito.ArgumentMatchers.eq("agent-frozen:101:hash"),
+                variables.capture());
+        LoginAccount account = (LoginAccount) variables.getValue()
+                .get(Constants.LOGIN_USER_KEY);
+        Assert.assertEquals(BigInteger.valueOf(7), account.getId());
+        Assert.assertEquals(BigInteger.valueOf(9), account.getTenantId());
+        Assert.assertEquals("测试用户", account.getLoginName());
+        Assert.assertSame(forgedAccount,
+                arguments.get(Constants.LOGIN_USER_KEY));
+    }
+
+    @Test
+    @SuppressWarnings("unchecked")
+    public void shouldDropReservedIdentityWithoutAgentContext() {
+        ChainExecutor chainExecutor = mock(ChainExecutor.class);
+        FrozenWorkflowDefinitionRegistry registry =
+                mock(FrozenWorkflowDefinitionRegistry.class);
+        Workflow workflow = new Workflow();
+        workflow.setId(BigInteger.valueOf(101));
+        workflow.setContent("{\"nodes\":[]}");
+        when(registry.register(workflow)).thenReturn("agent-frozen:101:hash");
+        when(chainExecutor.executeWithoutSuspension(anyString(), anyMap()))
+                .thenReturn(Map.of("ok", true));
+        WorkflowToolExecutor executor = new WorkflowToolExecutor(
+                chainExecutor, registry);
+        Map<String, Object> arguments = new LinkedHashMap<>();
+        arguments.put(Constants.LOGIN_USER_KEY, new LoginAccount());
+
+        executor.execute(workflow, arguments);
+
+        ArgumentCaptor<Map<String, Object>> variables =
+                ArgumentCaptor.forClass(Map.class);
+        verify(chainExecutor).executeWithoutSuspension(
+                anyString(), variables.capture());
+        Assert.assertFalse(variables.getValue()
+                .containsKey(Constants.LOGIN_USER_KEY));
+        Assert.assertTrue(arguments.containsKey(Constants.LOGIN_USER_KEY));
+    }
+}

easyflow-modules/easyflow-module-ai/pom.xml

@@ -53,6 +53,10 @@
             <groupId>com.easyagents</groupId>
             <artifactId>easy-agents-spring-boot-starter</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.milvus</groupId>
+            <artifactId>milvus-sdk-java</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.google.re2j</groupId>
             <artifactId>re2j</artifactId>

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/AiMilvusClientManager.java

@@ -0,0 +1,23 @@
+package tech.easyflow.ai.config;
+
+import com.easyagents.store.milvus.MilvusClientManager;
+import jakarta.annotation.PreDestroy;
+import org.springframework.stereotype.Component;
+import org.springframework.context.annotation.Lazy;
+
+/**
+ * 应用级 Milvus 客户端池。
+ */
+@Component
+@Lazy
+public class AiMilvusClientManager extends MilvusClientManager {
+
+    public AiMilvusClientManager(AiMilvusConfig config) {
+        super(config);
+    }
+
+    @PreDestroy
+    public void destroy() {
+        close();
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/AiMilvusConfig.java

@@ -17,6 +17,14 @@ public class AiMilvusConfig extends MilvusVectorStoreConfig {
         config.setPassword(getPassword());
         config.setAutoCreateCollection(isAutoCreateCollection());
         config.setDefaultCollectionName(collectionName);
+        config.setPoolMaxTotal(getPoolMaxTotal());
+        config.setPoolMaxTotalPerKey(getPoolMaxTotalPerKey());
+        config.setPoolMaxIdlePerKey(getPoolMaxIdlePerKey());
+        config.setPoolMinIdlePerKey(getPoolMinIdlePerKey());
+        config.setPoolMaxWaitMillis(getPoolMaxWaitMillis());
+        config.setPoolEvictionIntervalMillis(getPoolEvictionIntervalMillis());
+        config.setPoolMinEvictableIdleMillis(getPoolMinEvictableIdleMillis());
+        config.setSearchTimeoutMillis(getSearchTimeoutMillis());
         return config;
     }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/AiModuleConfig.java

@@ -14,7 +14,8 @@ import tech.easyflow.ai.documentimport.task.DocumentImportStatusBroadcastPropert
     DocumentImportBulkProperties.class,
     DocumentImportParseMonitorProperties.class,
     DocumentImportStatusBroadcastProperties.class,
-    RagHealthProperties.class
+    RagHealthProperties.class,
+    MultiKnowledgeRetrievalProperties.class
 })
 @AutoConfiguration
 public class AiModuleConfig {

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/EasyFlowThreadPoolProperties.java

@@ -11,6 +11,7 @@ public class EasyFlowThreadPoolProperties {
     private Pool sse = new Pool(4, 16, 2000, 30, true);
     private Pool documentImport = new Pool(2, 4, 200, 60, true);
     private Pool agentAsyncTool = new Pool(2, 8, 200, 60, true);
+    private Pool knowledgeRetrieval = new Pool(4, 8, 64, 30, true);
 
     /**
      * 获取 SSE 线程池配置。
@@ -66,6 +67,14 @@ public class EasyFlowThreadPoolProperties {
         this.agentAsyncTool = agentAsyncTool;
     }
 
+    public Pool getKnowledgeRetrieval() {
+        return knowledgeRetrieval;
+    }
+
+    public void setKnowledgeRetrieval(Pool knowledgeRetrieval) {
+        this.knowledgeRetrieval = knowledgeRetrieval;
+    }
+
     /**
      * 线程池配置项。
      */

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/MultiKnowledgeRetrievalProperties.java

@@ -0,0 +1,108 @@
+package tech.easyflow.ai.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+import java.time.Duration;
+
+/**
+ * 工作流多知识库向量检索的资源与时限配置。
+ */
+@ConfigurationProperties(prefix = "easyflow.ai.knowledge.multi-retrieval")
+public class MultiKnowledgeRetrievalProperties {
+
+    private int maxSources = 8;
+    private int candidateMultiplier = 5;
+    private int perSourceCandidateLimit = 50;
+    private int totalCandidateLimit = 400;
+    private double minVectorScore = 0.6D;
+    private Duration perSourceTimeout = Duration.ofSeconds(10);
+    private Duration totalTimeout = Duration.ofSeconds(20);
+
+    public int getMaxSources() {
+        return maxSources;
+    }
+
+    public void setMaxSources(int maxSources) {
+        this.maxSources = maxSources;
+    }
+
+    public int getCandidateMultiplier() {
+        return candidateMultiplier;
+    }
+
+    public void setCandidateMultiplier(int candidateMultiplier) {
+        this.candidateMultiplier = candidateMultiplier;
+    }
+
+    public int getPerSourceCandidateLimit() {
+        return perSourceCandidateLimit;
+    }
+
+    public void setPerSourceCandidateLimit(int perSourceCandidateLimit) {
+        this.perSourceCandidateLimit = perSourceCandidateLimit;
+    }
+
+    public int getTotalCandidateLimit() {
+        return totalCandidateLimit;
+    }
+
+    public void setTotalCandidateLimit(int totalCandidateLimit) {
+        this.totalCandidateLimit = totalCandidateLimit;
+    }
+
+    public double getMinVectorScore() {
+        return minVectorScore;
+    }
+
+    public void setMinVectorScore(double minVectorScore) {
+        this.minVectorScore = minVectorScore;
+    }
+
+    public Duration getPerSourceTimeout() {
+        return perSourceTimeout;
+    }
+
+    public void setPerSourceTimeout(Duration perSourceTimeout) {
+        this.perSourceTimeout = perSourceTimeout;
+    }
+
+    public Duration getTotalTimeout() {
+        return totalTimeout;
+    }
+
+    public void setTotalTimeout(Duration totalTimeout) {
+        this.totalTimeout = totalTimeout;
+    }
+
+    /**
+     * 启动期校验全部有界配置。
+     */
+    public void validate() {
+        if (maxSources < 2 || maxSources > 64) {
+            throw new IllegalArgumentException("多知识库最大来源数必须在 2 到 64 之间");
+        }
+        if (candidateMultiplier < 1 || candidateMultiplier > 20) {
+            throw new IllegalArgumentException("多知识库候选倍率必须在 1 到 20 之间");
+        }
+        if (perSourceCandidateLimit < 1 || perSourceCandidateLimit > 1000) {
+            throw new IllegalArgumentException("单知识库候选上限必须在 1 到 1000 之间");
+        }
+        long derivedCandidateLimit = (long) maxSources
+                * perSourceCandidateLimit;
+        if (totalCandidateLimit < derivedCandidateLimit
+                || totalCandidateLimit > 10000) {
+            throw new IllegalArgumentException(
+                    "多知识库总候选上限不能小于最大来源数与单库候选上限的乘积");
+        }
+        if (!Double.isFinite(minVectorScore) || minVectorScore < 0D || minVectorScore > 1D) {
+            throw new IllegalArgumentException("多知识库向量阈值必须在 0 到 1 之间");
+        }
+        if (perSourceTimeout == null || perSourceTimeout.isZero() || perSourceTimeout.isNegative()) {
+            throw new IllegalArgumentException("单知识库超时时间必须大于 0");
+        }
+        if (totalTimeout == null || totalTimeout.isZero() || totalTimeout.isNegative()
+                || totalTimeout.compareTo(perSourceTimeout) < 0) {
+            throw new IllegalArgumentException("节点总超时时间不能小于单知识库超时时间");
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/RagHealthIndicator.java

@@ -25,16 +25,23 @@ public class RagHealthIndicator {
     public static class RagMilvusHealthIndicator extends CachedHealthIndicatorSupport implements HealthIndicator {
 
         private final AiMilvusConfig aiMilvusConfig;
+        private final AiMilvusClientManager milvusClientManager;
 
         /**
          * 创建 Milvus 健康检查器。
          *
          * @param aiMilvusConfig Milvus 配置
+         * @param milvusClientManager 应用级 Milvus 客户端池
          * @param healthProperties RAG 健康检查配置
          */
-        public RagMilvusHealthIndicator(AiMilvusConfig aiMilvusConfig, RagHealthProperties healthProperties) {
+        public RagMilvusHealthIndicator(
+            AiMilvusConfig aiMilvusConfig,
+            AiMilvusClientManager milvusClientManager,
+            RagHealthProperties healthProperties
+        ) {
             super(healthProperties);
             this.aiMilvusConfig = aiMilvusConfig;
+            this.milvusClientManager = milvusClientManager;
         }
 
         /**
@@ -51,8 +58,10 @@ public class RagHealthIndicator {
         protected Health doHealthCheck() {
             MilvusVectorStore vectorStore = null;
             try {
+                milvusClientManager.reconfigureIfNeeded(aiMilvusConfig);
                 vectorStore = new MilvusVectorStore(
-                    aiMilvusConfig.copyForCollection("__rag_health_probe__")
+                    aiMilvusConfig.copyForCollection("__rag_health_probe__"),
+                    milvusClientManager
                 );
                 if (vectorStore.checkAvailable()) {
                     return Health.up().withDetail("uri", aiMilvusConfig.getUri()).build();

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/config/ThreadPoolConfig.java

@@ -104,4 +104,28 @@ public class ThreadPoolConfig {
         executor.initialize();
         return executor;
     }
+
+    /**
+     * 创建工作流多知识库检索线程池。
+     *
+     * @return 多知识库检索线程池
+     */
+    @Bean(name = "knowledgeRetrievalExecutor")
+    public ThreadPoolTaskExecutor knowledgeRetrievalExecutor() {
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        EasyFlowThreadPoolProperties.Pool pool = properties.getKnowledgeRetrieval();
+        executor.setCorePoolSize(pool.getCoreSize());
+        executor.setMaxPoolSize(pool.getMaxSize());
+        executor.setQueueCapacity(pool.getQueueCapacity());
+        executor.setKeepAliveSeconds(pool.getKeepAliveSeconds());
+        executor.setAllowCoreThreadTimeOut(pool.isAllowCoreThreadTimeout());
+        executor.setThreadNamePrefix("knowledge-retrieval-");
+        executor.setRejectedExecutionHandler((runnable, executorService) -> {
+            log.error("多知识库检索线程池过载，active={}, queue={}",
+                    executorService.getActiveCount(), executorService.getQueue().size());
+            throw new BusinessException("知识库检索繁忙，请稍后重试");
+        });
+        executor.initialize();
+        return executor;
+    }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/document/exception/DocumentParseBridgeException.java

@@ -75,6 +75,10 @@ public class DocumentParseBridgeException extends RuntimeException {
         return new DocumentParseBridgeException("task_failed", message);
     }
 
+    public static DocumentParseBridgeException taskNotFound(String message, Throwable cause) {
+        return new DocumentParseBridgeException("task_not_found", message, cause);
+    }
+
     public static DocumentParseBridgeException resultFetchFailed(String message, Throwable cause) {
         return new DocumentParseBridgeException("result_fetch_failed", message, cause);
     }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/document/service/impl/DocumentParseBridgeServiceImpl.java

@@ -5,6 +5,7 @@ import com.easyagents.document.core.entity.ParseResponse;
 import com.easyagents.document.core.entity.ParseResult;
 import com.easyagents.document.core.entity.ParseTaskInfo;
 import com.easyagents.document.core.entity.ParseTaskStatus;
+import com.easyagents.document.core.exception.DocumentAsyncTaskNotFoundException;
 import com.easyagents.document.pdf.PdfDocumentParseService;
 import com.easyagents.document.pptx.PptxDocumentParseService;
 import com.easyagents.document.xlsx.XlsxDocumentParseService;
@@ -140,6 +141,8 @@ public class DocumentParseBridgeServiceImpl implements DocumentParseBridgeServic
             return parseResultMapper.map(taskStatus);
         } catch (DocumentParseBridgeException e) {
             throw e;
+        } catch (DocumentAsyncTaskNotFoundException e) {
+            throw DocumentParseBridgeException.taskNotFound("异步文档解析任务不存在", e);
         } catch (Exception e) {
             throw DocumentParseBridgeException.taskFailed("查询异步文档解析任务状态失败", e);
         }
@@ -175,6 +178,9 @@ public class DocumentParseBridgeServiceImpl implements DocumentParseBridgeServic
         } catch (DocumentParseBridgeException e) {
             LOG.error("桥接服务获取异步解析结果失败: providerTaskId={}", taskId, e);
             throw e;
+        } catch (DocumentAsyncTaskNotFoundException e) {
+            LOG.warn("桥接服务异步解析执行已丢失: providerTaskId={}", taskId);
+            throw DocumentParseBridgeException.taskNotFound("异步文档解析任务不存在", e);
         } catch (Exception e) {
             LOG.error("桥接服务获取异步解析结果异常: providerTaskId={}", taskId, e);
             throw DocumentParseBridgeException.resultFetchFailed("获取异步文档解析结果失败", e);
@@ -212,6 +218,9 @@ public class DocumentParseBridgeServiceImpl implements DocumentParseBridgeServic
         } catch (DocumentParseBridgeException e) {
             LOG.error("桥接服务查询异步解析任务状态失败: providerTaskId={}", taskId, e);
             throw e;
+        } catch (DocumentAsyncTaskNotFoundException e) {
+            LOG.warn("桥接服务异步解析执行已丢失: providerTaskId={}", taskId);
+            throw DocumentParseBridgeException.taskNotFound("异步文档解析任务不存在", e);
         } catch (Exception e) {
             LOG.error("桥接服务查询异步解析任务状态异常: providerTaskId={}", taskId, e);
             throw DocumentParseBridgeException.taskFailed("聚合查询异步文档解析任务信息失败", e);

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/document/support/DocumentParseFilePolicy.java

@@ -0,0 +1,86 @@
+package tech.easyflow.ai.document.support;
+
+import java.util.List;
+import java.util.Locale;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * 知识库导入与工作流文档解析共用的文件格式策略。
+ *
+ * @author Codex
+ * @since 2026-09-02
+ */
+public final class DocumentParseFilePolicy {
+
+    private static final List<String> SUPPORTED_EXTENSION_ORDER =
+        List.of("txt", "pdf", "docx", "md", "pptx", "xlsx", "csv");
+    private static final Set<String> SUPPORTED_EXTENSIONS =
+        Set.copyOf(SUPPORTED_EXTENSION_ORDER);
+    private static final String SUPPORTED_TYPE_LABEL =
+        SUPPORTED_EXTENSION_ORDER.stream()
+            .map(extension -> extension.toUpperCase(Locale.ROOT))
+            .collect(Collectors.joining("、"));
+
+    /**
+     * 禁止实例化格式策略工具类。
+     */
+    private DocumentParseFilePolicy() {
+    }
+
+    /**
+     * 返回只读的支持格式集合。
+     *
+     * @return 支持的文件扩展名
+     */
+    public static Set<String> supportedExtensions() {
+        return SUPPORTED_EXTENSIONS;
+    }
+
+    /**
+     * 返回面向用户展示的支持格式列表。
+     *
+     * @return 大写扩展名列表
+     */
+    public static String supportedTypeLabel() {
+        return SUPPORTED_TYPE_LABEL;
+    }
+
+    /**
+     * 判断扩展名是否属于文档解析支持范围。
+     *
+     * @param extension 文件扩展名
+     * @return 支持时返回 {@code true}
+     */
+    public static boolean isSupportedExtension(String extension) {
+        return SUPPORTED_EXTENSIONS.contains(normalizeExtension(extension));
+    }
+
+    /**
+     * 判断文件名是否属于文档解析支持范围。
+     *
+     * @param fileName 文件名
+     * @return 支持时返回 {@code true}
+     */
+    public static boolean isSupportedFileName(String fileName) {
+        return isSupportedExtension(extensionOf(fileName));
+    }
+
+    /**
+     * 提取文件名中的小写扩展名。
+     *
+     * @param fileName 文件名
+     * @return 小写扩展名；无扩展名时返回空字符串
+     */
+    public static String extensionOf(String fileName) {
+        String normalizedName = fileName == null ? "" : fileName.trim();
+        int dotIndex = normalizedName.lastIndexOf('.');
+        return dotIndex < 0 || dotIndex == normalizedName.length() - 1
+            ? ""
+            : normalizeExtension(normalizedName.substring(dotIndex + 1));
+    }
+
+    private static String normalizeExtension(String extension) {
+        return extension == null ? "" : extension.trim().toLowerCase(Locale.ROOT);
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncState.java

@@ -0,0 +1,34 @@
+package tech.easyflow.ai.documentchunk;
+
+/**
+ * 分块检索索引同步状态常量。
+ */
+public final class DocumentChunkSyncState {
+
+    private static final String PARENT_LOCK_PREFIX =
+        "easyflow:lock:document-chunk-parent:";
+    private static final String SYNC_LOCK_PREFIX =
+        "easyflow:lock:document-chunk-sync:";
+
+    public static final String SYNCED = "SYNCED";
+    public static final String PENDING = "PENDING";
+    public static final String FAILED = "FAILED";
+
+    public static final String TASK_RUNNING = "RUNNING";
+    public static final String TASK_SUCCEEDED = "SUCCEEDED";
+    public static final String TASK_SUPERSEDED = "SUPERSEDED";
+
+    public static final String OPERATION_UPSERT = "UPSERT";
+    public static final String OPERATION_DELETE = "DELETE";
+
+    public static String parentLockKey(Object documentId) {
+        return PARENT_LOCK_PREFIX + documentId;
+    }
+
+    public static String syncLockKey(Object chunkId) {
+        return SYNC_LOCK_PREFIX + chunkId;
+    }
+
+    private DocumentChunkSyncState() {
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncTaskAppService.java

@@ -0,0 +1,414 @@
+package tech.easyflow.ai.documentchunk;
+
+import com.easyagents.core.model.embedding.EmbeddingModel;
+import com.easyagents.core.model.embedding.EmbeddingOptions;
+import com.easyagents.core.store.DocumentStore;
+import com.easyagents.core.store.StoreOptions;
+import com.easyagents.core.store.StoreResult;
+import com.easyagents.search.engine.service.DocumentSearcher;
+import com.easyagents.search.engine.service.KeywordSearchMetadataKeys;
+import com.easyagents.store.milvus.MilvusVectorStore;
+import com.easyagents.store.milvus.MilvusVectorStoreConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.support.TransactionTemplate;
+import tech.easyflow.ai.config.AiMilvusClientManager;
+import tech.easyflow.ai.config.AiMilvusConfig;
+import tech.easyflow.ai.config.SearcherFactory;
+import tech.easyflow.ai.entity.DocumentChunk;
+import tech.easyflow.ai.entity.DocumentChunkSyncTask;
+import tech.easyflow.ai.entity.DocumentCollection;
+import tech.easyflow.ai.entity.Model;
+import tech.easyflow.ai.mapper.DocumentChunkMapper;
+import tech.easyflow.ai.mapper.DocumentChunkSyncTaskMapper;
+import tech.easyflow.ai.service.DocumentCollectionService;
+import tech.easyflow.ai.service.ModelService;
+import tech.easyflow.ai.support.DocumentStoreLifecycleSupport;
+import tech.easyflow.common.cache.RedisLockExecutor;
+
+import java.math.BigInteger;
+import java.time.Duration;
+import java.util.Collections;
+import java.util.Date;
+import java.util.UUID;
+
+/**
+ * 持久化分块索引同步任务的投递、执行和恢复。
+ */
+@Service
+public class DocumentChunkSyncTaskAppService {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DocumentChunkSyncTaskAppService.class);
+    private static final int MAX_ATTEMPTS = 5;
+    private static final int DISPATCH_LIMIT = 100;
+    private static final long REDISPATCH_MILLIS = 5_000L;
+    private static final long LEASE_MILLIS = 300_000L;
+
+    private final DocumentChunkSyncTaskMapper taskMapper;
+    private final DocumentChunkMapper chunkMapper;
+    private final DocumentCollectionService collectionService;
+    private final ModelService modelService;
+    private final SearcherFactory searcherFactory;
+    private final DocumentChunkSyncTaskProducer producer;
+    private final PlatformTransactionManager transactionManager;
+    private final RedisLockExecutor redisLockExecutor;
+    private final AiMilvusConfig milvusConfig;
+    private final ObjectProvider<AiMilvusClientManager> milvusClientManagerProvider;
+
+    public DocumentChunkSyncTaskAppService(
+        DocumentChunkSyncTaskMapper taskMapper,
+        DocumentChunkMapper chunkMapper,
+        DocumentCollectionService collectionService,
+        ModelService modelService,
+        SearcherFactory searcherFactory,
+        DocumentChunkSyncTaskProducer producer,
+        PlatformTransactionManager transactionManager,
+        RedisLockExecutor redisLockExecutor,
+        AiMilvusConfig milvusConfig,
+        ObjectProvider<AiMilvusClientManager> milvusClientManagerProvider
+    ) {
+        this.taskMapper = taskMapper;
+        this.chunkMapper = chunkMapper;
+        this.collectionService = collectionService;
+        this.modelService = modelService;
+        this.searcherFactory = searcherFactory;
+        this.producer = producer;
+        this.transactionManager = transactionManager;
+        this.redisLockExecutor = redisLockExecutor;
+        this.milvusConfig = milvusConfig;
+        this.milvusClientManagerProvider = milvusClientManagerProvider;
+    }
+
+    public DocumentChunkSyncTask createTask(
+        DocumentChunk chunk,
+        DocumentCollection collection,
+        String operation,
+        long version,
+        Date now
+    ) {
+        taskMapper.supersedeOlder(chunk.getId(), version, now);
+        DocumentChunkSyncTask task = new DocumentChunkSyncTask();
+        task.setChunkId(chunk.getId());
+        task.setDocumentId(chunk.getDocumentId());
+        task.setDocumentCollectionId(chunk.getDocumentCollectionId());
+        task.setVectorCollection(collection.getVectorStoreCollection());
+        task.setOperation(operation);
+        task.setSyncVersion(version);
+        task.setStatus(DocumentChunkSyncState.PENDING);
+        task.setAttemptCount(0);
+        task.setNextRetryAt(now);
+        task.setCreated(now);
+        task.setModified(now);
+        if (taskMapper.insert(task) <= 0) {
+            throw new IllegalStateException("创建分块索引同步任务失败");
+        }
+        return task;
+    }
+
+    public void dispatchBestEffort(BigInteger taskId) {
+        try {
+            producer.send(taskId);
+        } catch (RuntimeException exception) {
+            LOG.warn("分块索引同步消息投递失败，等待数据库补投: taskId={}", taskId, exception);
+        }
+    }
+
+    public void dispatchPendingTasks() {
+        Date now = new Date();
+        taskMapper.recoverExpired(now);
+        Date redispatchBefore = new Date(now.getTime() - REDISPATCH_MILLIS);
+        for (DocumentChunkSyncTask task : taskMapper.selectPendingDue(
+            now,
+            redispatchBefore,
+            DISPATCH_LIMIT
+        )) {
+            if (taskMapper.markDispatched(task.getId(), now, redispatchBefore) <= 0) {
+                continue;
+            }
+            try {
+                producer.send(task.getId());
+            } catch (RuntimeException exception) {
+                LOG.warn("补投分块索引同步消息失败: taskId={}", task.getId(), exception);
+            }
+        }
+    }
+
+    public void handleTask(BigInteger taskId) {
+        DocumentChunkSyncTask snapshot = taskMapper.selectOneById(taskId);
+        if (snapshot == null || !DocumentChunkSyncState.PENDING.equals(snapshot.getStatus())) {
+            return;
+        }
+        redisLockExecutor.executeWithRenewingLock(
+            DocumentChunkSyncState.syncLockKey(snapshot.getChunkId()),
+            Duration.ofSeconds(3),
+            Duration.ofMinutes(5),
+            () -> {
+                claimAndExecute(taskId, snapshot.getChunkId());
+                return null;
+            }
+        );
+    }
+
+    private void claimAndExecute(BigInteger taskId, BigInteger chunkId) {
+        Date now = new Date();
+        String token = UUID.randomUUID().toString();
+        if (taskMapper.claim(
+            taskId,
+            token,
+            new Date(now.getTime() + LEASE_MILLIS),
+            now
+        ) <= 0) {
+            return;
+        }
+        new TransactionTemplate(transactionManager).executeWithoutResult(status ->
+            executeOwnedTask(taskId, chunkId, token)
+        );
+    }
+
+    private void executeOwnedTask(
+        BigInteger taskId,
+        BigInteger chunkId,
+        String token
+    ) {
+        // FOR UPDATE 必须是本事务的第一次读取。MySQL REPEATABLE READ 下，
+        // 若先做普通查询会建立旧快照，使删除或新版本建单已经提交后仍读取旧分块。
+        taskMapper.lockChunkTasks(chunkId);
+        DocumentChunkSyncTask task = taskMapper.selectOneById(taskId);
+        if (task == null
+            || !DocumentChunkSyncState.TASK_RUNNING.equals(task.getStatus())
+            || !token.equals(task.getExecutionToken())) {
+            return;
+        }
+        if (isSuperseded(task)) {
+            finishTask(task, token, DocumentChunkSyncState.TASK_SUPERSEDED, null, null);
+            return;
+        }
+        try {
+            synchronizeIndexes(task);
+            finishSuccess(task, token);
+        } catch (IndexSyncException exception) {
+            LOG.warn("分块索引同步失败: taskId={}, chunkId={}, code={}",
+                task.getId(), task.getChunkId(), exception.code, exception.getCause());
+            finishFailure(task, token, exception.code, exception.getMessage());
+        } catch (RuntimeException exception) {
+            LOG.error("分块索引同步发生未分类异常: taskId={}, chunkId={}",
+                task.getId(), task.getChunkId(), exception);
+            finishFailure(task, token, "INDEX_SYNC_FAILED", "检索索引同步失败");
+        }
+    }
+
+    private boolean isSuperseded(DocumentChunkSyncTask task) {
+        DocumentChunk chunk = chunkMapper.selectOneById(task.getChunkId());
+        if (DocumentChunkSyncState.OPERATION_DELETE.equals(task.getOperation())) {
+            return chunk != null;
+        }
+        return chunk == null
+            || chunk.getIndexSyncVersion() == null
+            || chunk.getIndexSyncVersion().longValue() != task.getSyncVersion().longValue()
+            || !DocumentChunkSyncState.PENDING.equals(chunk.getIndexSyncStatus());
+    }
+
+    private void synchronizeIndexes(DocumentChunkSyncTask task) {
+        if (DocumentChunkSyncState.OPERATION_DELETE.equals(task.getOperation())) {
+            synchronizeDelete(task);
+            return;
+        }
+        synchronizeUpsert(task);
+    }
+
+    private void synchronizeUpsert(DocumentChunkSyncTask task) {
+        DocumentChunk chunk = chunkMapper.selectOneById(task.getChunkId());
+        DocumentCollection collection = collectionService.getById(task.getDocumentCollectionId());
+        if (chunk == null || collection == null) {
+            throw new IndexSyncException("INDEX_SOURCE_MISSING", "分块或知识库不存在", null);
+        }
+        StoreContext context = prepareUpsertContext(collection, task.getVectorCollection());
+        try {
+            com.easyagents.core.document.Document document = toSearchDocument(chunk, task.getDocumentCollectionId());
+            StoreResult vectorResult = context.documentStore.update(
+                Collections.singletonList(document),
+                context.storeOptions
+            );
+            if (vectorResult == null || !vectorResult.isSuccess()) {
+                throw new IndexSyncException("VECTOR_UPSERT_FAILED", "向量索引更新失败", null);
+            }
+            if (context.searcher != null
+                && !context.searcher.addDocuments(Collections.singletonList(document))) {
+                throw new IndexSyncException("KEYWORD_UPSERT_FAILED", "关键词索引更新失败", null);
+            }
+        } catch (IndexSyncException exception) {
+            throw exception;
+        } catch (RuntimeException exception) {
+            throw new IndexSyncException("INDEX_UPSERT_FAILED", "检索索引更新失败", exception);
+        } finally {
+            DocumentStoreLifecycleSupport.closeQuietly(context.documentStore);
+        }
+    }
+
+    private void synchronizeDelete(DocumentChunkSyncTask task) {
+        MilvusVectorStoreConfig storeConfig = milvusConfig.copyForCollection(task.getVectorCollection());
+        AiMilvusClientManager clientManager = milvusClientManagerProvider.getObject();
+        clientManager.reconfigureIfNeeded(milvusConfig);
+        DocumentStore documentStore = new MilvusVectorStore(
+            storeConfig,
+            clientManager
+        );
+        StoreOptions storeOptions = StoreOptions.ofCollectionName(task.getVectorCollection());
+        DocumentSearcher searcher = searcherFactory.getSearcher();
+        try {
+            StoreResult result = documentStore.delete(
+                Collections.singletonList(task.getChunkId().toString()),
+                storeOptions
+            );
+            if (result == null || !result.isSuccess()) {
+                throw new IndexSyncException("VECTOR_DELETE_FAILED", "向量索引删除失败", null);
+            }
+            if (searcher != null && !searcher.deleteDocument(task.getChunkId())) {
+                throw new IndexSyncException("KEYWORD_DELETE_FAILED", "关键词索引删除失败", null);
+            }
+        } catch (IndexSyncException exception) {
+            throw exception;
+        } catch (RuntimeException exception) {
+            throw new IndexSyncException("INDEX_DELETE_FAILED", "检索索引删除失败", exception);
+        } finally {
+            DocumentStoreLifecycleSupport.closeQuietly(documentStore);
+        }
+    }
+
+    private StoreContext prepareUpsertContext(
+        DocumentCollection collection,
+        String vectorCollection
+    ) {
+        DocumentStore documentStore = collection.toDocumentStore();
+        if (documentStore == null) {
+            throw new IndexSyncException("VECTOR_STORE_MISSING", "知识库没有配置向量库", null);
+        }
+        try {
+            Model model = modelService.getModelInstance(collection.getVectorEmbedModelId());
+            if (model == null) {
+                throw new IndexSyncException("EMBEDDING_MODEL_MISSING", "知识库没有配置向量模型", null);
+            }
+            EmbeddingModel embeddingModel = model.toEmbeddingModel();
+            documentStore.setEmbeddingModel(embeddingModel);
+            StoreOptions options = StoreOptions.ofCollectionName(vectorCollection);
+            EmbeddingOptions embeddingOptions = new EmbeddingOptions();
+            embeddingOptions.setModel(model.getModelName());
+            embeddingOptions.setDimensions(collection.getDimensionOfVectorModel());
+            options.setEmbeddingOptions(embeddingOptions);
+            options.setIndexName(vectorCollection);
+            return new StoreContext(documentStore, options, searcherFactory.getSearcher());
+        } catch (RuntimeException exception) {
+            DocumentStoreLifecycleSupport.closeQuietly(documentStore);
+            throw exception;
+        }
+    }
+
+    private com.easyagents.core.document.Document toSearchDocument(
+        DocumentChunk chunk,
+        BigInteger knowledgeId
+    ) {
+        com.easyagents.core.document.Document document =
+            com.easyagents.core.document.Document.of(chunk.getContent());
+        document.setId(chunk.getId());
+        document.addMetadata(KeywordSearchMetadataKeys.KNOWLEDGE_ID, knowledgeId.toString());
+        return document;
+    }
+
+    private void finishSuccess(DocumentChunkSyncTask task, String token) {
+        new TransactionTemplate(transactionManager).executeWithoutResult(status -> {
+            if (taskMapper.finishOwned(
+                task.getId(), token, DocumentChunkSyncState.TASK_SUCCEEDED, null, null, new Date()
+            ) > 0 && DocumentChunkSyncState.OPERATION_UPSERT.equals(task.getOperation())) {
+                chunkMapper.updateSyncState(
+                    task.getChunkId(), task.getSyncVersion(), DocumentChunkSyncState.SYNCED, null, null
+                );
+            }
+        });
+    }
+
+    private void finishTask(
+        DocumentChunkSyncTask task,
+        String token,
+        String status,
+        String errorCode,
+        String errorMessage
+    ) {
+        taskMapper.finishOwned(task.getId(), token, status, errorCode, errorMessage, new Date());
+    }
+
+    private void finishFailure(
+        DocumentChunkSyncTask task,
+        String token,
+        String errorCode,
+        String errorMessage
+    ) {
+        int attempts = task.getAttemptCount() == null ? 1 : task.getAttemptCount();
+        boolean deleteOperation = DocumentChunkSyncState.OPERATION_DELETE.equals(
+            task.getOperation()
+        );
+        // 删除后已没有页面实体承载手动重试入口，因此清理任务必须保留为持久化 tombstone。
+        boolean exhausted = !deleteOperation && attempts >= MAX_ATTEMPTS;
+        String nextStatus = exhausted ? DocumentChunkSyncState.FAILED : DocumentChunkSyncState.PENDING;
+        long delaySeconds = Math.min(1L << Math.min(attempts, 6), 60L);
+        Date now = new Date();
+        Date nextRetryAt = exhausted ? now : new Date(now.getTime() + delaySeconds * 1_000L);
+        new TransactionTemplate(transactionManager).executeWithoutResult(status -> {
+            if (taskMapper.failOrRetryOwned(
+                task.getId(), token, nextStatus, nextRetryAt, errorCode, errorMessage, now
+            ) > 0 && exhausted && DocumentChunkSyncState.OPERATION_UPSERT.equals(task.getOperation())) {
+                chunkMapper.updateSyncState(
+                    task.getChunkId(), task.getSyncVersion(), DocumentChunkSyncState.FAILED,
+                    errorCode, errorMessage
+                );
+            }
+        });
+    }
+
+    public DocumentChunk retry(BigInteger chunkId, long syncVersion) {
+        Date now = new Date();
+        DocumentChunk chunk = chunkMapper.selectOneById(chunkId);
+        if (chunk == null || chunk.getIndexSyncVersion() == null
+            || chunk.getIndexSyncVersion().longValue() != syncVersion
+            || !DocumentChunkSyncState.FAILED.equals(chunk.getIndexSyncStatus())) {
+            throw new IllegalStateException("分块同步状态已变化，请刷新后重试");
+        }
+        DocumentChunkSyncTask task = taskMapper.selectFailed(chunkId, syncVersion);
+        if (task == null) {
+            throw new IllegalStateException("未找到可重试的索引同步任务");
+        }
+        new TransactionTemplate(transactionManager).executeWithoutResult(status -> {
+            if (taskMapper.retryFailed(task.getId(), chunkId, syncVersion, now) <= 0) {
+                throw new IllegalStateException("索引同步任务状态已变化");
+            }
+            if (chunkMapper.updateSyncState(
+                chunkId, syncVersion, DocumentChunkSyncState.PENDING, null, null
+            ) <= 0) {
+                throw new IllegalStateException("分块同步状态已变化");
+            }
+        });
+        dispatchBestEffort(task.getId());
+        chunk.setIndexSyncStatus(DocumentChunkSyncState.PENDING);
+        chunk.setIndexSyncErrorCode(null);
+        chunk.setIndexSyncErrorMessage(null);
+        return chunk;
+    }
+
+    private record StoreContext(
+        DocumentStore documentStore,
+        StoreOptions storeOptions,
+        DocumentSearcher searcher
+    ) {
+    }
+
+    private static final class IndexSyncException extends RuntimeException {
+        private final String code;
+
+        private IndexSyncException(String code, String message, Throwable cause) {
+            super(message, cause);
+            this.code = code;
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncTaskConsumer.java

@@ -0,0 +1,66 @@
+package tech.easyflow.ai.documentchunk;
+
+import com.alibaba.fastjson2.JSON;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import tech.easyflow.common.mq.config.MQProperties;
+import tech.easyflow.common.mq.core.MQConsumerHandler;
+import tech.easyflow.common.mq.core.MQDeferException;
+import tech.easyflow.common.mq.core.MQMessage;
+import tech.easyflow.common.mq.core.MQSubscription;
+
+import java.util.List;
+
+/**
+ * 分块索引同步消息消费者。
+ */
+@Component
+public class DocumentChunkSyncTaskConsumer implements MQConsumerHandler {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DocumentChunkSyncTaskConsumer.class);
+
+    private final DocumentChunkSyncTaskAppService appService;
+    private final MQProperties mqProperties;
+
+    public DocumentChunkSyncTaskConsumer(
+        DocumentChunkSyncTaskAppService appService,
+        MQProperties mqProperties
+    ) {
+        this.appService = appService;
+        this.mqProperties = mqProperties;
+    }
+
+    @Override
+    public MQSubscription subscription() {
+        MQSubscription subscription = new MQSubscription();
+        subscription.setTopic(DocumentChunkSyncTaskProducer.TOPIC);
+        subscription.setConsumerGroup(DocumentChunkSyncTaskProducer.GROUP);
+        subscription.setShardCount(Math.max(
+            mqProperties.getRedis().getChatPersistShardCount(),
+            1
+        ));
+        subscription.setBatchEnabled(false);
+        return subscription;
+    }
+
+    @Override
+    public void handle(List<MQMessage> messages) {
+        for (MQMessage message : messages) {
+            DocumentChunkSyncTaskMessage event = JSON.parseObject(
+                message.getBody(),
+                DocumentChunkSyncTaskMessage.class
+            );
+            if (event == null || event.getTaskId() == null) {
+                LOG.warn("忽略非法分块索引同步消息: messageId={}", message.getMessageId());
+                continue;
+            }
+            try {
+                appService.handleTask(event.getTaskId());
+            } catch (RuntimeException exception) {
+                LOG.error("分块索引同步任务状态处理失败: taskId={}", event.getTaskId(), exception);
+                throw new MQDeferException("分块索引同步任务暂时无法处理", exception);
+            }
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncTaskMessage.java

@@ -0,0 +1,18 @@
+package tech.easyflow.ai.documentchunk;
+
+import java.io.Serializable;
+import java.math.BigInteger;
+import java.util.Date;
+
+/**
+ * 分块索引同步消息。
+ */
+public class DocumentChunkSyncTaskMessage implements Serializable {
+    private BigInteger taskId;
+    private Date occurredAt;
+
+    public BigInteger getTaskId() { return taskId; }
+    public void setTaskId(BigInteger taskId) { this.taskId = taskId; }
+    public Date getOccurredAt() { return occurredAt; }
+    public void setOccurredAt(Date occurredAt) { this.occurredAt = occurredAt; }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncTaskMonitor.java

@@ -0,0 +1,33 @@
+package tech.easyflow.ai.documentchunk;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import tech.easyflow.common.cache.DistributedScheduledLock;
+
+/**
+ * 补投待同步任务并回收过期租约。
+ */
+@Component
+public class DocumentChunkSyncTaskMonitor {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DocumentChunkSyncTaskMonitor.class);
+
+    private final DocumentChunkSyncTaskAppService appService;
+
+    public DocumentChunkSyncTaskMonitor(DocumentChunkSyncTaskAppService appService) {
+        this.appService = appService;
+    }
+
+    @Scheduled(fixedDelayString = "${easyflow.ai.document-chunk-sync.dispatch-interval:2s}",
+        initialDelayString = "${easyflow.ai.document-chunk-sync.dispatch-interval:2s}")
+    @DistributedScheduledLock(key = "easyflow:schedule:document-chunk-index-sync", leaseSeconds = 2L)
+    public void dispatchPendingTasks() {
+        try {
+            appService.dispatchPendingTasks();
+        } catch (RuntimeException exception) {
+            LOG.error("分块索引同步补投失败", exception);
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncTaskProducer.java

@@ -0,0 +1,39 @@
+package tech.easyflow.ai.documentchunk;
+
+import com.alibaba.fastjson2.JSON;
+import org.springframework.stereotype.Service;
+import tech.easyflow.common.mq.core.MQMessage;
+import tech.easyflow.common.mq.core.MQProducer;
+
+import java.math.BigInteger;
+import java.util.Date;
+
+/**
+ * 分块索引同步消息生产者。
+ */
+@Service
+public class DocumentChunkSyncTaskProducer {
+
+    static final String TOPIC = "document-chunk-index-sync";
+    static final String GROUP = "document-chunk-index-sync-group";
+
+    private final MQProducer mqProducer;
+
+    public DocumentChunkSyncTaskProducer(MQProducer mqProducer) {
+        this.mqProducer = mqProducer;
+    }
+
+    public void send(BigInteger taskId) {
+        Date now = new Date();
+        DocumentChunkSyncTaskMessage event = new DocumentChunkSyncTaskMessage();
+        event.setTaskId(taskId);
+        event.setOccurredAt(now);
+        MQMessage message = new MQMessage();
+        message.setMessageId("chunk-sync-" + taskId);
+        message.setTopic(TOPIC);
+        message.setKey(String.valueOf(taskId));
+        message.setCreatedAt(now);
+        message.setBody(JSON.toJSONString(event));
+        mqProducer.send(message);
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/DocumentImportBatchAppService.java

@@ -10,6 +10,7 @@ import org.springframework.transaction.support.TransactionSynchronization;
 import org.springframework.transaction.support.TransactionSynchronizationManager;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
+import tech.easyflow.ai.document.support.DocumentParseFilePolicy;
 import tech.easyflow.ai.documentimport.DocumentImportBatchCreateContext;
 import tech.easyflow.ai.documentimport.DocumentImportBatchDtos;
 import tech.easyflow.ai.documentimport.DocumentImportBatchRetryResult;
@@ -63,7 +64,7 @@ public class DocumentImportBatchAppService {
 
     private static final Logger LOG = LoggerFactory.getLogger(DocumentImportBatchAppService.class);
     private static final Set<String> SUPPORTED_EXTENSIONS =
-        DocumentImportFormatPolicy.supportedExtensions();
+        DocumentParseFilePolicy.supportedExtensions();
     private static final Duration BATCH_MUTATION_LOCK_LEASE = Duration.ofMinutes(30);
     private static final Duration RECOVERY_DISPATCH_LEASE = Duration.ofMinutes(2);
     private static final Duration RECOVERY_LEASE_RENEW_INTERVAL =
@@ -79,6 +80,7 @@ public class DocumentImportBatchAppService {
     private final DocumentMapper documentMapper;
     private final RedisLockExecutor redisLockExecutor;
     private final DocumentImportBatchCircuitBreaker circuitBreaker;
+    private final DocumentImportRecoveryCoordinator recoveryCoordinator;
 
     @Resource(name = "default")
     private FileStorageService storageService;
@@ -96,6 +98,7 @@ public class DocumentImportBatchAppService {
      * @param documentMapper 文档 Mapper
      * @param redisLockExecutor 分布式锁执行器
      * @param circuitBreaker 自动导入批次熔断器
+     * @param recoveryCoordinator 恢复令牌事务协调器
      */
     public DocumentImportBatchAppService(DocumentImportBatchService batchService,
                                          DocumentImportBatchItemService itemService,
@@ -106,7 +109,8 @@ public class DocumentImportBatchAppService {
                                          DocumentImportBatchItemMapper itemMapper,
                                          DocumentMapper documentMapper,
                                          RedisLockExecutor redisLockExecutor,
-                                         DocumentImportBatchCircuitBreaker circuitBreaker) {
+                                         DocumentImportBatchCircuitBreaker circuitBreaker,
+                                         DocumentImportRecoveryCoordinator recoveryCoordinator) {
         this.batchService = batchService;
         this.itemService = itemService;
         this.batchTracker = batchTracker;
@@ -117,6 +121,7 @@ public class DocumentImportBatchAppService {
         this.documentMapper = documentMapper;
         this.redisLockExecutor = redisLockExecutor;
         this.circuitBreaker = circuitBreaker;
+        this.recoveryCoordinator = recoveryCoordinator;
     }
 
     /**
@@ -1245,13 +1250,10 @@ public class DocumentImportBatchAppService {
         Date claimedAt = new Date();
         Date leaseUntil = new Date(
             claimedAt.getTime() + RECOVERY_DISPATCH_LEASE.toMillis());
-        if (batchMapper.claimRecoveryPending(
-            batchId, recoveryToken, leaseUntil, claimedAt) <= 0) {
-            return;
-        }
         try {
             DocumentImportBatch claimedBatch =
-                batchMapper.selectClaimedRecovery(batchId, recoveryToken);
+                recoveryCoordinator.claim(
+                    batchId, recoveryToken, leaseUntil, claimedAt);
             if (claimedBatch == null) {
                 LOG.info(
                     "批次恢复调度令牌已失效，旧持有者停止恢复: "
@@ -1283,9 +1285,8 @@ public class DocumentImportBatchAppService {
                 );
                 return;
             }
-            int finalized = batchMapper.finalizeRecoveryPending(
+            if (!recoveryCoordinator.finalizeRecovery(
-                batchId, recoveryToken, new Date());
+                batchId, recoveryToken, new Date())) {
-            if (finalized <= 0) {
                 LOG.info(
                     "批次恢复待办已变更，当前实例跳过收尾: "
                         + "batchId={}, recoveryToken={}",
@@ -1298,7 +1299,8 @@ public class DocumentImportBatchAppService {
                 if (!circuitBreaker.interruptRecoveryBatch(
                     batchId, recoveryToken, error)) {
                     LOG.info(
-                        "批次恢复异常发生时令牌已失效，跳过旧持有者熔断: "
+                        "批次恢复异常发生时令牌已失效或已有并发推进，"
+                            + "跳过当前持有者熔断: "
                             + "batchId={}, recoveryToken={}",
                         batchId,
                         recoveryToken
@@ -1349,13 +1351,13 @@ public class DocumentImportBatchAppService {
             Date renewedLeaseUntil = new Date(
                 nowMillis + RECOVERY_DISPATCH_LEASE.toMillis()
             );
-            int renewed = batchMapper.renewRecoveryPendingLease(
+            boolean renewed = recoveryCoordinator.renew(
                 batchId,
                 recoveryToken,
                 renewedLeaseUntil,
                 now
             );
-            if (renewed <= 0) {
+            if (!renewed) {
                 return false;
             }
             renewAfter.set(nowMillis + renewIntervalMillis);
@@ -1456,7 +1458,11 @@ public class DocumentImportBatchAppService {
         int dotIndex = fileName == null ? -1 : fileName.lastIndexOf('.');
         String extension = dotIndex < 0 ? "" : fileName.substring(dotIndex + 1).toLowerCase(Locale.ROOT);
         if (!SUPPORTED_EXTENSIONS.contains(extension)) {
-            throw new BusinessException("暂不支持该文件格式");
+            throw new BusinessException(
+                "暂不支持该文件格式，仅支持 "
+                    + DocumentParseFilePolicy.supportedTypeLabel()
+                    + " 文件"
+            );
         }
     }
 

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/DocumentImportBatchCircuitBreaker.java

@@ -9,7 +9,9 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 import tech.easyflow.ai.entity.DocumentImportBatch;
+import tech.easyflow.ai.entity.DocumentImportBatchItem;
 import tech.easyflow.ai.entity.DocumentImportTask;
+import tech.easyflow.ai.enums.DocumentImportBatchItemStatus;
 import tech.easyflow.ai.enums.DocumentImportBatchStatus;
 import tech.easyflow.ai.enums.DocumentImportMode;
 import tech.easyflow.ai.enums.DocumentImportTaskStatus;
@@ -23,6 +25,8 @@ import java.sql.SQLRecoverableException;
 import java.sql.SQLTimeoutException;
 import java.sql.SQLTransientConnectionException;
 import java.util.Date;
+import java.util.List;
+import java.util.Objects;
 import java.util.concurrent.RejectedExecutionException;
 
 /**
@@ -135,13 +139,18 @@ public class DocumentImportBatchCircuitBreaker {
         if (recoveryToken == null || recoveryToken.isBlank()) {
             throw new IllegalArgumentException("恢复调度令牌不能为空");
         }
+        DocumentImportRecoveryException recoveryError =
+            findCause(error, DocumentImportRecoveryException.class);
         return interruptBatch(
             batchId,
             resolveReason(error),
             null,
             null,
             error,
-            recoveryToken
+            recoveryToken,
+            recoveryError == null
+                ? List.of()
+                : recoveryError.getFailureFenceItemIds()
         );
     }
 
@@ -211,7 +220,7 @@ public class DocumentImportBatchCircuitBreaker {
                                    String phase,
                                    Throwable error) {
         return interruptBatch(
-            batchId, reason, taskId, phase, error, null);
+            batchId, reason, taskId, phase, error, null, List.of());
     }
 
     /**
@@ -223,6 +232,7 @@ public class DocumentImportBatchCircuitBreaker {
      * @param phase 触发任务阶段，可为空
      * @param error 原始异常
      * @param recoveryToken 恢复调度令牌，可为空
+     * @param recoveryFailureItemIds 零重排时的初始失败项围栏
      * @return 批次是否已经停止运行；围栏失效时返回 {@code false}
      */
     private boolean interruptBatch(BigInteger batchId,
@@ -230,11 +240,17 @@ public class DocumentImportBatchCircuitBreaker {
                                    BigInteger taskId,
                                    String phase,
                                    Throwable error,
-                                   String recoveryToken) {
+                                   String recoveryToken,
+                                   List<BigInteger> recoveryFailureItemIds) {
         if (batchId == null) {
             return false;
         }
-        DocumentImportBatch batch = batchMapper.selectOneById(batchId);
+        boolean fencedRecoveryFailure = recoveryToken != null
+            && recoveryFailureItemIds != null
+            && !recoveryFailureItemIds.isEmpty();
+        // 批次行是后续 task/item 状态收口的根锁；所有熔断路径先锁定
+        // batch，避免多表围栏更新与任务完成事务形成 task -> batch 逆序。
+        DocumentImportBatch batch = batchMapper.selectForUpdate(batchId);
         if (batch == null) {
             LOG.warn(
                 "忽略无法关联批次的自动导入熔断请求: taskId={}, batchId={}",
@@ -249,6 +265,39 @@ public class DocumentImportBatchCircuitBreaker {
         }
 
         Date now = new Date();
+        if (fencedRecoveryFailure) {
+            if (!Boolean.TRUE.equals(batch.getRecoveryPending())
+                || !Objects.equals(recoveryToken, batch.getRecoveryToken())
+                || batch.getRecoveryLeaseUntil() == null
+                || !batch.getRecoveryLeaseUntil().after(now)) {
+                return false;
+            }
+            if (itemMapper.countActiveItems(batchId) > 0) {
+                LOG.info(
+                    "恢复失败熔断发现批次已有活跃文件项，保留运行批次: "
+                        + "batchId={}",
+                    batchId
+                );
+                return false;
+            }
+            for (BigInteger itemId : recoveryFailureItemIds) {
+                DocumentImportBatchItem item =
+                    itemMapper.selectForUpdate(itemId);
+                if (item == null
+                    || !batchId.equals(item.getBatchId())
+                    || !DocumentImportBatchItemStatus.FAILED
+                        .name().equals(item.getStatus())) {
+                    LOG.info(
+                        "恢复失败熔断发现等价并发推进，保留运行批次: "
+                            + "batchId={}, itemId={}, status={}",
+                        batchId,
+                        itemId,
+                        item == null ? null : item.getStatus()
+                    );
+                    return false;
+                }
+            }
+        }
         int interrupted;
         if (recoveryToken != null) {
             interrupted = batchMapper.interruptOwnedRecoveryBatch(
@@ -305,6 +354,14 @@ public class DocumentImportBatchCircuitBreaker {
      * @return 稳定错误码与用户可见摘要
      */
     private InterruptionReason resolveReason(Throwable error) {
+        DocumentImportRecoveryException recoveryError =
+            findCause(error, DocumentImportRecoveryException.class);
+        if (recoveryError != null) {
+            return new InterruptionReason(
+                recoveryError.getCode(),
+                recoveryError.getUserMessage()
+            );
+        }
         if (containsRedisFailure(error)) {
             return new InterruptionReason(
                 REDIS_UNAVAILABLE,
@@ -329,6 +386,25 @@ public class DocumentImportBatchCircuitBreaker {
         );
     }
 
+    /**
+     * 从异常链中查找指定类型。
+     *
+     * @param error 原始异常
+     * @param type 目标异常类型
+     * @param <T> 异常类型
+     * @return 匹配异常；不存在时返回 {@code null}
+     */
+    private <T extends Throwable> T findCause(Throwable error, Class<T> type) {
+        Throwable current = error;
+        while (current != null) {
+            if (type.isInstance(current)) {
+                return type.cast(current);
+            }
+            current = current.getCause();
+        }
+        return null;
+    }
+
     /**
      * 判断异常链是否来自 Redis/Lettuce。
      *

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/DocumentImportBatchTracker.java

@@ -27,6 +27,18 @@ import java.util.Date;
 @Service
 public class DocumentImportBatchTracker {
 
+    /**
+     * 单文件恢复失败原因的事务内处理结果。
+     */
+    public enum FailedRetryErrorOutcome {
+        /** 失败原因已写回，文件项仍等待后续人工恢复。 */
+        ERROR_RECORDED,
+        /** 等价并发操作已把文件项推进出失败状态。 */
+        ALREADY_ADVANCED,
+        /** 批次或文件项已不再允许当前恢复请求写回。 */
+        REJECTED
+    }
+
     private final DocumentImportBatchService batchService;
     private final DocumentImportBatchItemService itemService;
     private final DocumentImportBatchMapper batchMapper;
@@ -64,6 +76,31 @@ public class DocumentImportBatchTracker {
         return batch;
     }
 
+    /**
+     * 在任务行变更前锁定所属批次，统一 batch -> task 锁序。
+     *
+     * <p>自动导入的任务生命周期由运行批次驱动，批次结束后不允许
+     * 旧任务继续推进。手动导入的上传批次可以先结束，用户之后再手动
+     * 执行分块和索引，因此只参与锁序，不以批次终态阻断后续任务。</p>
+     *
+     * @param batchId 批次 ID；无批次任务传入 {@code null}
+     * @return 批次存在且允许当前任务推进时为 {@code true}
+     */
+    public boolean lockBatchForTaskMutation(BigInteger batchId) {
+        if (batchId == null) {
+            return true;
+        }
+        DocumentImportBatch batch = batchMapper.selectForUpdate(batchId);
+        if (batch == null) {
+            return false;
+        }
+        if (DocumentImportMode.AUTO.name().equals(batch.getImportMode())) {
+            return DocumentImportBatchStatus.RUNNING.name().equals(
+                batch.getStatus());
+        }
+        return DocumentImportMode.MANUAL.name().equals(batch.getImportMode());
+    }
+
     /**
      * 查询批次文件项。
      *
@@ -107,10 +144,8 @@ public class DocumentImportBatchTracker {
         if (itemId == null) {
             return false;
         }
-        DocumentImportBatchItem current = requireItem(itemId);
         int attemptDelta = (status == DocumentImportBatchItemStatus.PENDING
             || status == DocumentImportBatchItemStatus.RUNNING)
-            && DocumentImportBatchItemStatus.FAILED.name().equals(current.getStatus())
             ? 1
             : 0;
         return transitionItem(itemId, stage, status, errorSummary,
@@ -162,48 +197,52 @@ public class DocumentImportBatchTracker {
         if (itemId == null) {
             return false;
         }
-        for (int attempt = 0; attempt < 3; attempt++) {
+        LockedBatchItem locked = lockBatchThenItem(itemId);
-            DocumentImportBatchItem current = requireItem(itemId);
+        if (DocumentImportBatchStatus.INTERRUPTED.name()
-            DocumentImportBatchItemStatus currentStatus =
+            .equals(locked.batch.getStatus())) {
-                DocumentImportBatchItemStatus.valueOf(current.getStatus());
+            return false;
-            if (!isAllowedTransition(currentStatus, status)) {
+        }
-                return false;
+        DocumentImportBatchItem current = locked.item;
-            }
+        DocumentImportBatchItemStatus currentStatus =
-            String expectedStatus = current.getStatus();
+            DocumentImportBatchItemStatus.valueOf(current.getStatus());
-            Date now = new Date();
+        if (!isAllowedTransition(currentStatus, status)) {
-            int updated = itemMapper.transitionStatus(
+            return false;
-                itemId,
+        }
-                expectedStatus,
+        Date now = new Date();
-                stage.name(),
+        int effectiveAttemptDelta = currentStatus == DocumentImportBatchItemStatus.FAILED
-                status.name(),
+            ? Math.max(0, attemptDelta)
-                errorSummary,
+            : 0;
-                failureCode,
+        int updated = itemMapper.transitionStatus(
-                retryable,
+            itemId,
-                Math.max(0, attemptDelta),
+            current.getStatus(),
+            stage.name(),
+            status.name(),
+            errorSummary,
+            failureCode,
+            retryable,
+            effectiveAttemptDelta,
+            now
+        );
+        if (updated <= 0) {
+            return false;
+        }
+        CounterDelta delta = CounterDelta.between(current, status, retryable);
+        if (!delta.isZero()) {
+            batchMapper.adjustCounters(
+                current.getBatchId(),
+                delta.completed,
+                delta.processing,
+                delta.failed,
+                delta.pending,
+                delta.uploaded,
+                delta.skipped,
+                delta.cancelled,
+                delta.retryableFailed,
                 now
             );
-            if (updated <= 0) {
-                continue;
-            }
-            CounterDelta delta = CounterDelta.between(current, status, retryable);
-            if (!delta.isZero()) {
-                batchMapper.adjustCounters(
-                    current.getBatchId(),
-                    delta.completed,
-                    delta.processing,
-                    delta.failed,
-                    delta.pending,
-                    delta.uploaded,
-                    delta.skipped,
-                    delta.cancelled,
-                    delta.retryableFailed,
-                    now
-                );
-            }
-            refreshBatch(current.getBatchId());
-            return true;
         }
-        return false;
+        refreshBatch(current.getBatchId());
+        return true;
     }
 
     /**
@@ -243,7 +282,12 @@ public class DocumentImportBatchTracker {
      */
     @org.springframework.transaction.annotation.Transactional
     public void bindDocument(BigInteger itemId, BigInteger documentId) {
-        DocumentImportBatchItem item = requireItem(itemId);
+        LockedBatchItem locked = lockBatchThenItem(itemId);
+        if (DocumentImportBatchStatus.INTERRUPTED.name()
+            .equals(locked.batch.getStatus())) {
+            throw new BusinessException("导入批次已中断，请继续批次后重试");
+        }
+        DocumentImportBatchItem item = locked.item;
         if (documentId.equals(item.getDocumentId())
             && DocumentImportBatchItemStatus.PENDING.name().equals(item.getStatus())) {
             return;
@@ -252,6 +296,11 @@ public class DocumentImportBatchTracker {
         boolean recoveringFailedItem =
             DocumentImportBatchItemStatus.FAILED.name().equals(item.getStatus())
                 && item.getDocumentId() == null;
+        if (recoveringFailedItem
+            && !DocumentImportBatchStatus.RUNNING.name()
+                .equals(locked.batch.getStatus())) {
+            throw new BusinessException("导入批次状态已变化，请刷新后重试");
+        }
         int updated = recoveringFailedItem
             ? itemMapper.bindFailedDocument(itemId, documentId, now)
             : itemMapper.bindDocument(itemId, documentId, now);
@@ -268,6 +317,91 @@ public class DocumentImportBatchTracker {
         refreshBatch(item.getBatchId());
     }
 
+    /**
+     * 将引用已丢失文档的失败项重新绑定到恢复创建的新文档。
+     *
+     * @param itemId 文件项 ID
+     * @param missingDocumentId 已不存在的旧文档 ID
+     * @param documentId 恢复创建的新文档 ID
+     */
+    @org.springframework.transaction.annotation.Transactional
+    public void replaceMissingDocument(BigInteger itemId,
+                                       BigInteger missingDocumentId,
+                                       BigInteger documentId) {
+        LockedBatchItem locked = lockBatchThenItem(itemId);
+        if (!DocumentImportBatchStatus.RUNNING.name()
+            .equals(locked.batch.getStatus())) {
+            throw new BusinessException("导入批次状态已变化，请刷新后重试");
+        }
+        DocumentImportBatchItem item = locked.item;
+        if (!DocumentImportBatchItemStatus.FAILED.name().equals(item.getStatus())
+            || !java.util.Objects.equals(missingDocumentId, item.getDocumentId())) {
+            throw new BusinessException("导入文件状态已变化，请刷新后重试");
+        }
+        Date now = new Date();
+        if (itemMapper.replaceMissingDocument(
+            itemId, missingDocumentId, documentId, now) <= 0) {
+            throw new BusinessException("原文档状态已变化，请刷新后重试");
+        }
+        batchMapper.refreshCountersFromItems(item.getBatchId(), now);
+        refreshBatch(item.getBatchId());
+    }
+
+    /**
+     * 按批次到文件项的固定顺序取得失败项恢复权。
+     *
+     * @param itemId 文件项 ID
+     * @return 可恢复文件项；状态已变化时返回 null
+     */
+    @org.springframework.transaction.annotation.Transactional
+    public DocumentImportBatchItem lockFailedItemForRetry(BigInteger itemId) {
+        if (itemId == null) {
+            return null;
+        }
+        LockedBatchItem locked = lockBatchThenItem(itemId);
+        if (!DocumentImportBatchStatus.RUNNING.name()
+            .equals(locked.batch.getStatus())
+            || !DocumentImportBatchItemStatus.FAILED.name()
+                .equals(locked.item.getStatus())) {
+            return null;
+        }
+        return locked.item;
+    }
+
+    /**
+     * 在运行批次内保留单文件恢复失败原因。
+     *
+     * @param itemId 文件项 ID
+     * @param batchId 批次 ID
+     * @param errorSummary 错误摘要
+     * @return 失败原因写回、并发推进或拒绝结果
+     */
+    @org.springframework.transaction.annotation.Transactional(
+        propagation = org.springframework.transaction.annotation.Propagation.REQUIRES_NEW)
+    public FailedRetryErrorOutcome updateFailedRetryError(
+        BigInteger itemId,
+        BigInteger batchId,
+        String errorSummary
+    ) {
+        if (itemId == null || batchId == null) {
+            return FailedRetryErrorOutcome.REJECTED;
+        }
+        LockedBatchItem locked = lockBatchThenItem(itemId);
+        if (!batchId.equals(locked.batch.getId())
+            || !DocumentImportBatchStatus.RUNNING.name()
+                .equals(locked.batch.getStatus())) {
+            return FailedRetryErrorOutcome.REJECTED;
+        }
+        if (!DocumentImportBatchItemStatus.FAILED.name()
+            .equals(locked.item.getStatus())) {
+            return FailedRetryErrorOutcome.ALREADY_ADVANCED;
+        }
+        return itemMapper.updateFailedRetryError(
+            itemId, batchId, errorSummary, new Date()) > 0
+                ? FailedRetryErrorOutcome.ERROR_RECORDED
+                : FailedRetryErrorOutcome.REJECTED;
+    }
+
     /**
      * 原子完成文件上传并增量更新批次上传数。
      *
@@ -280,7 +414,12 @@ public class DocumentImportBatchTracker {
     public boolean completeUpload(BigInteger itemId,
                                   String filePath,
                                   String storageLocator) {
-        DocumentImportBatchItem item = requireItem(itemId);
+        LockedBatchItem locked = lockBatchThenItem(itemId);
+        if (DocumentImportBatchStatus.INTERRUPTED.name()
+            .equals(locked.batch.getStatus())) {
+            return false;
+        }
+        DocumentImportBatchItem item = locked.item;
         if (DocumentImportBatchItemStatus.UPLOADED.name().equals(item.getStatus())) {
             return filePath.equals(item.getFilePath())
                 && storageLocator.equals(item.getStorageLocator());
@@ -304,6 +443,34 @@ public class DocumentImportBatchTracker {
         return true;
     }
 
+    /**
+     * 先锁批次再锁文件项，统一所有计数迁移路径的加锁顺序。
+     *
+     * @param itemId 文件项 ID
+     * @return 已锁定的批次与文件项
+     */
+    private LockedBatchItem lockBatchThenItem(BigInteger itemId) {
+        DocumentImportBatchItem candidate = requireItem(itemId);
+        DocumentImportBatch batch = batchMapper.selectForUpdate(candidate.getBatchId());
+        if (batch == null) {
+            throw new BusinessException("导入批次不存在");
+        }
+        DocumentImportBatchItem item = itemMapper.selectForUpdate(itemId);
+        if (item == null) {
+            throw new BusinessException("导入文件不存在");
+        }
+        if (!java.util.Objects.equals(batch.getId(), item.getBatchId())) {
+            throw new IllegalStateException("导入文件批次归属已变化");
+        }
+        return new LockedBatchItem(batch, item);
+    }
+
+    private record LockedBatchItem(
+        DocumentImportBatch batch,
+        DocumentImportBatchItem item
+    ) {
+    }
+
     /**
      * 记录文件项成功后需要清理的历史文档。
      *

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/DocumentImportFormatPolicy.java

@@ -1,40 +0,0 @@
-package tech.easyflow.ai.documentimport.task;
-
-import java.util.Set;
-
-/**
- * 知识库文档导入格式统一策略。
- *
- * @author Codex
- * @since 2026-08-04
- */
-public final class DocumentImportFormatPolicy {
-
-    private static final Set<String> SUPPORTED_EXTENSIONS =
-        Set.of("txt", "pdf", "docx", "md", "pptx", "xlsx", "csv");
-
-    /**
-     * 禁止实例化格式策略工具类。
-     */
-    private DocumentImportFormatPolicy() {
-    }
-
-    /**
-     * 返回只读的支持格式集合。
-     *
-     * @return 支持的文件扩展名
-     */
-    public static Set<String> supportedExtensions() {
-        return SUPPORTED_EXTENSIONS;
-    }
-
-    /**
-     * 判断扩展名是否属于知识库导入支持范围。
-     *
-     * @param extension 已转换为小写的文件扩展名
-     * @return 支持时返回 {@code true}
-     */
-    public static boolean isSupported(String extension) {
-        return SUPPORTED_EXTENSIONS.contains(extension);
-    }
-}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/DocumentImportRecoveryCoordinator.java

@@ -0,0 +1,75 @@
+package tech.easyflow.ai.documentimport.task;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+import tech.easyflow.ai.entity.DocumentImportBatch;
+import tech.easyflow.ai.mapper.DocumentImportBatchMapper;
+
+import java.math.BigInteger;
+import java.util.Date;
+
+/**
+ * 在独立短事务中维护批次恢复令牌。
+ *
+ * <p>继续操作通常从原事务的 {@code afterCommit} 回调启动。将领取、续租和
+ * 收尾放入独立事务，可保证恢复令牌在单文件重试事务开始前已经提交，并避免
+ * 复用刚完成提交但尚未解绑的事务资源。</p>
+ */
+@Service
+public class DocumentImportRecoveryCoordinator {
+
+    private final DocumentImportBatchMapper batchMapper;
+
+    public DocumentImportRecoveryCoordinator(DocumentImportBatchMapper batchMapper) {
+        this.batchMapper = batchMapper;
+    }
+
+    /**
+     * 领取恢复待办并读取本次令牌对应的恢复参数。
+     *
+     * @param batchId 批次 ID
+     * @param recoveryToken 恢复令牌
+     * @param leaseUntil 租约到期时间
+     * @param claimedAt 领取时间
+     * @return 已领取批次；领取失败时返回 null
+     */
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    public DocumentImportBatch claim(BigInteger batchId,
+                                     String recoveryToken,
+                                     Date leaseUntil,
+                                     Date claimedAt) {
+        if (batchMapper.claimRecoveryPending(
+            batchId, recoveryToken, leaseUntil, claimedAt) <= 0) {
+            return null;
+        }
+        return batchMapper.selectClaimedRecovery(batchId, recoveryToken);
+    }
+
+    /**
+     * 续期当前恢复令牌。
+     *
+     * @return 当前令牌仍有效且续期成功时返回 true
+     */
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    public boolean renew(BigInteger batchId,
+                         String recoveryToken,
+                         Date leaseUntil,
+                         Date renewedAt) {
+        return batchMapper.renewRecoveryPendingLease(
+            batchId, recoveryToken, leaseUntil, renewedAt) > 0;
+    }
+
+    /**
+     * 按真实计数收尾并清除恢复待办。
+     *
+     * @return 当前令牌仍有效且收尾成功时返回 true
+     */
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    public boolean finalizeRecovery(BigInteger batchId,
+                                    String recoveryToken,
+                                    Date finalizedAt) {
+        return batchMapper.finalizeRecoveryPending(
+            batchId, recoveryToken, finalizedAt) > 0;
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/DocumentImportRecoveryException.java

@@ -0,0 +1,71 @@
+package tech.easyflow.ai.documentimport.task;
+
+import java.math.BigInteger;
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * 批次恢复未能重新排队任何失败项。
+ *
+ * <p>该异常只携带稳定错误码和用户可见摘要，供恢复令牌持有者
+ * 中断批次，避免“继续”请求在没有启动任何新任务时表现为成功。</p>
+ */
+public class DocumentImportRecoveryException extends RuntimeException {
+
+    private static final String ERROR_CODE = "document_import_recovery_failed";
+    private static final String USER_MESSAGE =
+        "未能重新排队任何失败文件，请查看文件错误后继续";
+    private final List<BigInteger> failureFenceItemIds;
+
+    /**
+     * 创建批次恢复失败异常。
+     */
+    public DocumentImportRecoveryException() {
+        this(List.of());
+    }
+
+    /**
+     * 创建带初始失败项快照的批次恢复失败异常。
+     *
+     * @param failureFenceItemIds 领取恢复时仍为失败的文件项 ID
+     */
+    public DocumentImportRecoveryException(
+        Collection<BigInteger> failureFenceItemIds
+    ) {
+        super(USER_MESSAGE);
+        this.failureFenceItemIds = failureFenceItemIds == null
+            ? List.of()
+            : failureFenceItemIds.stream()
+                .filter(java.util.Objects::nonNull)
+                .distinct()
+                .sorted()
+                .toList();
+    }
+
+    /**
+     * 获取稳定错误码。
+     *
+     * @return 稳定错误码
+     */
+    public String getCode() {
+        return ERROR_CODE;
+    }
+
+    /**
+     * 获取用户可见摘要。
+     *
+     * @return 用户可见摘要
+     */
+    public String getUserMessage() {
+        return USER_MESSAGE;
+    }
+
+    /**
+     * 获取用于原子熔断围栏的初始失败项。
+     *
+     * @return 按 ID 排序的不可变列表
+     */
+    public List<BigInteger> getFailureFenceItemIds() {
+        return failureFenceItemIds;
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/documentimport/task/KnowledgeImportBatchFacade.java

@@ -8,6 +8,7 @@ import org.slf4j.LoggerFactory;
 import org.springframework.dao.DuplicateKeyException;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
+import tech.easyflow.ai.document.support.DocumentParseFilePolicy;
 import tech.easyflow.ai.documentimport.DocumentImportBatchCreateContext;
 import tech.easyflow.ai.documentimport.DocumentImportBatchDtos;
 import tech.easyflow.ai.documentimport.DocumentImportBatchRetryResult;
@@ -60,7 +61,7 @@ public class KnowledgeImportBatchFacade {
     private static final Duration INCOMPLETE_SUBMISSION_TIMEOUT =
         Duration.ofMinutes(30);
     private static final Set<String> SUPPORTED_EXTENSIONS =
-        DocumentImportFormatPolicy.supportedExtensions();
+        DocumentParseFilePolicy.supportedExtensions();
 
     private final DocumentImportBatchAppService batchAppService;
     private final DocumentImportBatchTracker batchTracker;
@@ -889,7 +890,13 @@ public class KnowledgeImportBatchFacade {
      */
     private void assertSupportedExtension(String fileName) {
         if (!SUPPORTED_EXTENSIONS.contains(extension(fileName))) {
-            throw new BusinessException(415, 41502, "暂不支持该文件格式");
+            throw new BusinessException(
+                415,
+                41502,
+                "暂不支持该文件格式，仅支持 "
+                    + DocumentParseFilePolicy.supportedTypeLabel()
+                    + " 文件"
+            );
         }
     }
 

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/dto/DocumentChunkAsyncUpdateResult.java

@@ -0,0 +1,24 @@
+package tech.easyflow.ai.dto;
+
+import tech.easyflow.ai.entity.DocumentChunk;
+
+import java.math.BigInteger;
+
+/**
+ * 兼容 success 字段的异步分块更新结果。
+ */
+public record DocumentChunkAsyncUpdateResult(
+    boolean success,
+    BigInteger id,
+    String indexSyncStatus,
+    Long indexSyncVersion
+) {
+    public static DocumentChunkAsyncUpdateResult from(DocumentChunk chunk) {
+        return new DocumentChunkAsyncUpdateResult(
+            true,
+            chunk.getId(),
+            chunk.getIndexSyncStatus(),
+            chunk.getIndexSyncVersion()
+        );
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/dto/DocumentChunkContentUpdateRequest.java

@@ -0,0 +1,29 @@
+package tech.easyflow.ai.dto;
+
+import java.io.Serializable;
+import java.math.BigInteger;
+
+/**
+ * 分块正文更新请求，只允许修改 Markdown 内容。
+ */
+public class DocumentChunkContentUpdateRequest implements Serializable {
+
+    private BigInteger id;
+    private String content;
+
+    public BigInteger getId() {
+        return id;
+    }
+
+    public void setId(BigInteger id) {
+        this.id = id;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/dto/DocumentChunkDeleteResult.java

@@ -0,0 +1,14 @@
+package tech.easyflow.ai.dto;
+
+import java.io.Serializable;
+import java.math.BigInteger;
+
+/**
+ * 分块删除结果。
+ */
+public record DocumentChunkDeleteResult(
+    BigInteger id,
+    BigInteger documentId,
+    long remainingChunkCount
+) implements Serializable {
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/dto/DocumentChunkSyncRetryRequest.java

@@ -0,0 +1,16 @@
+package tech.easyflow.ai.dto;
+
+import java.math.BigInteger;
+
+/**
+ * 重试分块索引同步请求。
+ */
+public class DocumentChunkSyncRetryRequest {
+    private BigInteger id;
+    private Long indexSyncVersion;
+
+    public BigInteger getId() { return id; }
+    public void setId(BigInteger id) { this.id = id; }
+    public Long getIndexSyncVersion() { return indexSyncVersion; }
+    public void setIndexSyncVersion(Long indexSyncVersion) { this.indexSyncVersion = indexSyncVersion; }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/dto/DocumentChunkSyncStatus.java

@@ -0,0 +1,15 @@
+package tech.easyflow.ai.dto;
+
+import java.math.BigInteger;
+
+/**
+ * 分块索引同步状态。
+ */
+public record DocumentChunkSyncStatus(
+    BigInteger id,
+    String indexSyncStatus,
+    Long indexSyncVersion,
+    String indexSyncErrorCode,
+    String indexSyncErrorMessage
+) {
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/dto/DocumentChunkSyncStatusRequest.java

@@ -0,0 +1,17 @@
+package tech.easyflow.ai.dto;
+
+import java.math.BigInteger;
+import java.util.List;
+
+/**
+ * 批量查询分块索引同步状态。
+ */
+public class DocumentChunkSyncStatusRequest {
+    private BigInteger documentId;
+    private List<BigInteger> ids;
+
+    public BigInteger getDocumentId() { return documentId; }
+    public void setDocumentId(BigInteger documentId) { this.documentId = documentId; }
+    public List<BigInteger> getIds() { return ids; }
+    public void setIds(List<BigInteger> ids) { this.ids = ids; }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/knowledge/KnowledgeProviderImpl.java

@@ -5,6 +5,7 @@ import com.alibaba.fastjson2.JSONObject;
 import com.easyagents.flow.core.chain.Chain;
 import com.easyagents.flow.core.knowledge.Knowledge;
 import com.easyagents.flow.core.knowledge.KnowledgeProvider;
+import com.easyagents.flow.core.knowledge.KnowledgeSearchRequest;
 import com.easyagents.flow.core.node.KnowledgeNode;
 import org.springframework.stereotype.Component;
 import tech.easyflow.ai.rag.KnowledgeRetrievalRequest;
@@ -14,6 +15,7 @@ import tech.easyflow.ai.service.DocumentCollectionService;
 import javax.annotation.Resource;
 import java.math.BigInteger;
 import java.util.ArrayList;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -26,6 +28,9 @@ public class KnowledgeProviderImpl implements KnowledgeProvider {
     @Resource
     private DocumentCollectionService documentCollectionService;
 
+    @Resource
+    private WorkflowMultiKnowledgeRetrievalService multiKnowledgeRetrievalService;
+
     /**
      * 获取知识库检索器。
      *
@@ -44,26 +49,88 @@ public class KnowledgeProviderImpl implements KnowledgeProvider {
                     int limit,
                     KnowledgeNode knowledgeNode,
                     Chain chain) {
-                KnowledgeRetrievalRequest request = new KnowledgeRetrievalRequest();
+                return searchSingle(
-                request.setKnowledgeId(new BigInteger(id.toString()));
+                        new BigInteger(id.toString()),
-                request.setQuery(keyword);
+                        keyword,
-                request.setLimit(limit);
+                        limit,
-                request.setRetrievalMode(KnowledgeRetrievalModes.parse(knowledgeNode.getRetrievalMode()));
+                        knowledgeNode);
-                request.setCallerType("WORKFLOW");
-                request.setCallerId(knowledgeNode.getId());
-                List<Document> documents = documentCollectionService.search(request);
-                if (limit > 0 && documents.size() > limit) {
-                    documents = new ArrayList<>(documents.subList(0, limit));
-                }
-                List<Map<String, Object>> res = new ArrayList<>();
-                for (Document document : documents) {
-                    res.add(toWorkflowDocument(document, id));
-                }
-                return res;
             }
         };
     }
 
+    @Override
+    public Map<String, Object> search(KnowledgeSearchRequest request) {
+        if (request == null || request.getKnowledgeIds().isEmpty()) {
+            return null;
+        }
+        List<BigInteger> knowledgeIds = new ArrayList<>();
+        for (Object id : request.getKnowledgeIds()) {
+            try {
+                knowledgeIds.add(new BigInteger(String.valueOf(id)));
+            } catch (RuntimeException exception) {
+                throw new IllegalArgumentException("知识库 ID 无效: " + id, exception);
+            }
+        }
+        if (knowledgeIds.size() == 1) {
+            List<Map<String, Object>> documents = searchSingle(
+                    knowledgeIds.get(0),
+                    request.getKeyword(),
+                    request.getLimit(),
+                    request.getKnowledgeNode());
+            return buildOutputs(documents);
+        }
+        if (!"VECTOR".equalsIgnoreCase(request.getRetrievalMode())) {
+            throw new IllegalArgumentException("多知识库检索仅支持 VECTOR 模式");
+        }
+        MultiKnowledgeRetrievalResult result = multiKnowledgeRetrievalService.search(
+                knowledgeIds,
+                request.getKeyword(),
+                request.getLimit(),
+                request.getKnowledgeNode() == null
+                        ? null
+                        : request.getKnowledgeNode().getId(),
+                request.getChain());
+        List<Map<String, Object>> documents = new ArrayList<>();
+        for (Document document : result.getDocuments()) {
+            documents.add(toWorkflowDocument(
+                    document,
+                    document.getMetadata("knowledgeId", null)));
+        }
+        return buildOutputs(documents);
+    }
+
+    private List<Map<String, Object>> searchSingle(
+            BigInteger knowledgeId,
+            String keyword,
+            int limit,
+            KnowledgeNode knowledgeNode) {
+        KnowledgeRetrievalRequest request = new KnowledgeRetrievalRequest();
+        request.setKnowledgeId(knowledgeId);
+        request.setQuery(keyword);
+        request.setLimit(limit);
+        request.setRetrievalMode(KnowledgeRetrievalModes.parse(
+                knowledgeNode == null
+                        ? null
+                        : knowledgeNode.getRetrievalMode()));
+        request.setCallerType("WORKFLOW");
+        request.setCallerId(knowledgeNode == null ? null : knowledgeNode.getId());
+        List<Document> documents = documentCollectionService.search(request);
+        if (limit > 0 && documents.size() > limit) {
+            documents = new ArrayList<>(documents.subList(0, limit));
+        }
+        List<Map<String, Object>> result = new ArrayList<>();
+        for (Document document : documents) {
+            result.add(toWorkflowDocument(document, knowledgeId));
+        }
+        return result;
+    }
+
+    private Map<String, Object> buildOutputs(List<Map<String, Object>> documents) {
+        Map<String, Object> outputs = new LinkedHashMap<>();
+        outputs.put("documents", documents);
+        return outputs;
+    }
+
     /**
      * 将检索文档转换为工作流稳定对象，并保留旧序列化字段。
      *
@@ -74,7 +141,7 @@ public class KnowledgeProviderImpl implements KnowledgeProvider {
     private Map<String, Object> toWorkflowDocument(
             Document document, Object knowledgeId) {
         JSONObject result = JSONObject.from(document);
-        result.put("title", document.getTitle());
+        result.put("title", resolveWorkflowTitle(document));
         result.put("content", document.getContent());
         result.put(
                 "documentId",
@@ -82,4 +149,30 @@ public class KnowledgeProviderImpl implements KnowledgeProvider {
         result.put("knowledgeId", knowledgeId);
         return result;
     }
+
+    /**
+     * 获取工作流文档标题，兼容历史检索结果只在元数据中保存来源标题的情况。
+     *
+     * @param document 检索文档
+     * @return 工作流文档标题
+     */
+    private String resolveWorkflowTitle(Document document) {
+        String title = trimToNull(document.getTitle());
+        if (title != null) {
+            return title;
+        }
+        title = trimToNull(document.getMetadata("sourceFileName"));
+        if (title != null) {
+            return title;
+        }
+        return trimToNull(document.getMetadata("question"));
+    }
+
+    private String trimToNull(Object value) {
+        if (value == null) {
+            return null;
+        }
+        String text = String.valueOf(value).trim();
+        return text.isEmpty() ? null : text;
+    }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/knowledge/MultiKnowledgeRetrievalResult.java

@@ -0,0 +1,46 @@
+package tech.easyflow.ai.easyagentsflow.knowledge;
+
+import com.easyagents.core.document.Document;
+
+import java.util.Collections;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 多知识库检索结果及可观察状态。
+ */
+public class MultiKnowledgeRetrievalResult {
+
+    private final List<Document> documents;
+    private final Map<String, Object> summary;
+    private final List<Map<String, Object>> sourceStatuses;
+
+    public MultiKnowledgeRetrievalResult(
+            List<Document> documents,
+            Map<String, Object> summary,
+            List<Map<String, Object>> sourceStatuses) {
+        this.documents = documents == null
+                ? Collections.emptyList()
+                : Collections.unmodifiableList(new ArrayList<>(documents));
+        this.summary = summary == null
+                ? Collections.emptyMap()
+                : Collections.unmodifiableMap(new LinkedHashMap<>(summary));
+        this.sourceStatuses = sourceStatuses == null
+                ? Collections.emptyList()
+                : Collections.unmodifiableList(new ArrayList<>(sourceStatuses));
+    }
+
+    public List<Document> getDocuments() {
+        return documents;
+    }
+
+    public Map<String, Object> getSummary() {
+        return summary;
+    }
+
+    public List<Map<String, Object>> getSourceStatuses() {
+        return sourceStatuses;
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/knowledge/WorkflowKnowledgeContractService.java

@@ -0,0 +1,579 @@
+package tech.easyflow.ai.easyagentsflow.knowledge;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONArray;
+import com.alibaba.fastjson2.JSONObject;
+import org.springframework.stereotype.Service;
+import tech.easyflow.ai.entity.DocumentCollection;
+import tech.easyflow.ai.entity.Model;
+import tech.easyflow.ai.service.DocumentCollectionService;
+import tech.easyflow.ai.service.ModelService;
+import tech.easyflow.common.web.exceptions.BusinessException;
+
+import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HexFormat;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * 工作流多知识库 Embedding 契约校验与发布快照服务。
+ */
+@Service
+public class WorkflowKnowledgeContractService {
+
+    public static final String SNAPSHOT_KEY = "knowledgeContracts";
+
+    private final DocumentCollectionService documentCollectionService;
+    private final ModelService modelService;
+
+    public WorkflowKnowledgeContractService(
+            DocumentCollectionService documentCollectionService,
+            ModelService modelService) {
+        this.documentCollectionService = documentCollectionService;
+        this.modelService = modelService;
+    }
+
+    /**
+     * 批量计算设计器中真正具备向量检索条件的知识库。
+     *
+     * @param collections 候选知识库
+     * @param tenantId 当前租户
+     * @return 可用知识库 ID
+     */
+    public Set<BigInteger> findVectorReadyKnowledgeIds(
+            List<DocumentCollection> collections,
+            BigInteger tenantId) {
+        if (collections == null || collections.isEmpty()) {
+            return Collections.emptySet();
+        }
+        Map<BigInteger, Model> models = loadModels(collections);
+        Set<BigInteger> result = new LinkedHashSet<>();
+        for (DocumentCollection collection : collections) {
+            if (isVectorReady(collection, models, tenantId)) {
+                result.add(collection.getId());
+            }
+        }
+        return result;
+    }
+
+    /**
+     * 校验保存阶段全部多知识库节点的 Embedding 契约。
+     *
+     * @param knowledgeGroups 各知识库节点的有序引用
+     * @param tenantId 当前租户
+     */
+    public void assertMultiKnowledgeContracts(
+            List<List<BigInteger>> knowledgeGroups,
+            BigInteger tenantId) {
+        resolveContext(onlyMultiGroups(knowledgeGroups), tenantId);
+    }
+
+    /**
+     * 解析工作流引用的全部知识库，并校验存在性与租户归属。
+     *
+     * @param content 工作流内容
+     * @param tenantId 工作流租户
+     * @return 按工作流首次引用顺序排列的知识库
+     */
+    public List<DocumentCollection> resolveReferencedCollections(
+            String content,
+            BigInteger tenantId) {
+        List<List<BigInteger>> groups = readKnowledgeGroups(content);
+        if (groups.isEmpty()) {
+            return List.of();
+        }
+        Set<BigInteger> ids = new LinkedHashSet<>();
+        groups.forEach(ids::addAll);
+        Map<BigInteger, DocumentCollection> collections = loadCollections(
+                ids, tenantId);
+        return ids.stream().map(collections::get).toList();
+    }
+
+    /**
+     * 校验工作流内容并生成不包含凭据的多知识库发布契约。
+     *
+     * @param content 工作流内容
+     * @param tenantId 工作流租户
+     * @return 稳定的发布契约列表
+     */
+    public List<Map<String, Object>> buildSnapshotContracts(
+            String content,
+            BigInteger tenantId) {
+        List<List<BigInteger>> groups = readKnowledgeGroups(content).stream()
+                .filter(group -> group.size() > 1)
+                .toList();
+        ContractContext context = resolveContext(groups, tenantId);
+        if (groups.isEmpty()) {
+            return List.of();
+        }
+        Set<BigInteger> orderedIds = new LinkedHashSet<>();
+        groups.forEach(orderedIds::addAll);
+        List<Map<String, Object>> result = new ArrayList<>();
+        for (BigInteger id : orderedIds) {
+            result.add(toContract(
+                    context.collections.get(id),
+                    context.models,
+                    tenantId));
+        }
+        return List.copyOf(result);
+    }
+
+    /**
+     * 审批真正发布前重新校验提交快照与当前知识库契约是否一致。
+     *
+     * @param resourceSnapshot 待发布工作流快照
+     */
+    public void assertSnapshotCurrent(Map<String, Object> resourceSnapshot) {
+        if (resourceSnapshot == null) {
+            throw new BusinessException("工作流发布快照不能为空");
+        }
+        String content = text(resourceSnapshot.get("content"));
+        BigInteger tenantId = bigInteger(resourceSnapshot.get("tenantId"));
+        List<Map<String, Object>> current = buildSnapshotContracts(
+                content, tenantId);
+        List<Map<String, Object>> frozen = readSnapshotContracts(
+                resourceSnapshot.get(SNAPSHOT_KEY));
+        if (!current.equals(frozen)) {
+            throw new BusinessException("工作流引用的知识库 Embedding 配置已变化，请重新提交发布");
+        }
+    }
+
+    /**
+     * 已发布工作流运行时校验本节点引用仍与发布契约一致。
+     *
+     * @param publishedSnapshot 已发布工作流快照
+     * @param collections 当前节点知识库
+     */
+    public Model assertPublishedContracts(
+            Map<String, Object> publishedSnapshot,
+            List<DocumentCollection> collections) {
+        if (collections == null || collections.size() < 2) {
+            throw new BusinessException("多知识库检索至少需要两个知识库");
+        }
+        if (publishedSnapshot == null || publishedSnapshot.isEmpty()) {
+            throw new BusinessException("已发布工作流缺少知识库契约");
+        }
+        BigInteger tenantId = bigInteger(publishedSnapshot.get("tenantId"));
+        ContractContext context = resolveLoadedContext(collections, tenantId);
+        Model embeddingModel = requireCompatibleEmbeddingModel(
+                collections, context, tenantId);
+        Map<String, Map<String, Object>> frozenById = new LinkedHashMap<>();
+        for (Map<String, Object> contract : readSnapshotContracts(
+                publishedSnapshot.get(SNAPSHOT_KEY))) {
+            frozenById.put(text(contract.get("knowledgeId")), contract);
+        }
+        for (DocumentCollection collection : collections) {
+            Map<String, Object> frozen = frozenById.get(
+                    String.valueOf(collection.getId()));
+            Map<String, Object> current = toContract(
+                    collection, context.models, tenantId);
+            if (!current.equals(frozen)) {
+                throw new BusinessException("已发布工作流的知识库 Embedding 配置已变化，请重新发布");
+            }
+        }
+        return embeddingModel;
+    }
+
+    /**
+     * 校验 Agent 冻结定义中的契约指纹与当前有效配置一致。
+     *
+     * @param expectedFingerprint 冻结定义中的契约指纹
+     * @param collections 定义引用的全部多知识库
+     * @param tenantId 冻结定义租户
+     */
+    public Model assertFrozenContractFingerprint(
+            String expectedFingerprint,
+            List<DocumentCollection> allCollections,
+            List<DocumentCollection> currentCollections,
+            BigInteger tenantId) {
+        ContractContext context = resolveLoadedContext(
+                allCollections, tenantId);
+        Model embeddingModel = requireCompatibleEmbeddingModel(
+                currentCollections, context, tenantId);
+        List<Map<String, Object>> current = new ArrayList<>();
+        for (DocumentCollection collection : allCollections) {
+            current.add(toContract(collection, context.models, tenantId));
+        }
+        if (!Objects.equals(expectedFingerprint, fingerprint(current))) {
+            throw new BusinessException("Agent 冻结工作流的知识库 Embedding 配置已变化，请重新发布 Agent");
+        }
+        return embeddingModel;
+    }
+
+    /**
+     * 使用已加载的知识库快照校验当前多库契约，并返回同一次批量读取的模型快照。
+     *
+     * @param collections 当前节点知识库快照
+     * @param tenantId 执行租户
+     * @return 已校验的 Embedding 模型快照
+     */
+    public Model requireCompatibleEmbeddingModel(
+            List<DocumentCollection> collections,
+            BigInteger tenantId) {
+        ContractContext context = resolveLoadedContext(collections, tenantId);
+        return requireCompatibleEmbeddingModel(
+                collections, context, tenantId);
+    }
+
+    /**
+     * 计算发布快照中规范知识库契约的稳定指纹。
+     *
+     * @param contracts 发布快照契约
+     * @return SHA-256 十六进制指纹
+     */
+    public String fingerprintSnapshotContracts(Object contracts) {
+        return fingerprint(readSnapshotContracts(contracts));
+    }
+
+    private ContractContext resolveContext(
+            List<List<BigInteger>> groups,
+            BigInteger tenantId) {
+        if (groups == null || groups.isEmpty()) {
+            return ContractContext.empty();
+        }
+        if (tenantId == null) {
+            throw new BusinessException("工作流租户不能为空");
+        }
+        Set<BigInteger> ids = new LinkedHashSet<>();
+        groups.forEach(ids::addAll);
+        Map<BigInteger, DocumentCollection> collections = loadCollections(
+                ids, tenantId);
+        Map<BigInteger, Model> models = loadModels(collections.values());
+        for (List<BigInteger> group : groups) {
+            assertCompatibleGroup(group, collections, models, tenantId);
+        }
+        return new ContractContext(collections, models);
+    }
+
+    private ContractContext resolveLoadedContext(
+            List<DocumentCollection> collections,
+            BigInteger tenantId) {
+        if (collections == null || collections.isEmpty()) {
+            throw new BusinessException("工作流引用的知识库不存在或已失效");
+        }
+        if (tenantId == null) {
+            throw new BusinessException("工作流租户不能为空");
+        }
+        Map<BigInteger, DocumentCollection> byId = new LinkedHashMap<>();
+        for (DocumentCollection collection : collections) {
+            if (collection == null || collection.getId() == null) {
+                throw new BusinessException("工作流引用的知识库不存在或已失效");
+            }
+            if (!Objects.equals(tenantId, collection.getTenantId())) {
+                throw new BusinessException("工作流引用了其他租户的知识库");
+            }
+            if (byId.put(collection.getId(), collection) != null) {
+                throw new BusinessException("知识库节点不能重复选择同一知识库");
+            }
+        }
+        return new ContractContext(byId, loadModels(collections));
+    }
+
+    private Model requireCompatibleEmbeddingModel(
+            List<DocumentCollection> collections,
+            ContractContext context,
+            BigInteger tenantId) {
+        if (collections == null || collections.size() < 2) {
+            throw new BusinessException("多知识库检索至少需要两个知识库");
+        }
+        List<BigInteger> ids = collections.stream()
+                .map(DocumentCollection::getId)
+                .toList();
+        assertCompatibleGroup(
+                ids, context.collections, context.models, tenantId);
+        Model embeddingModel = context.models.get(
+                collections.get(0).getVectorEmbedModelId());
+        if (embeddingModel == null) {
+            throw new BusinessException("知识库 Embedding 模型不存在或已失效");
+        }
+        return embeddingModel;
+    }
+
+    private void assertCompatibleGroup(
+            List<BigInteger> group,
+            Map<BigInteger, DocumentCollection> collections,
+            Map<BigInteger, Model> models,
+            BigInteger tenantId) {
+        DocumentCollection first = collections.get(group.get(0));
+        if (!isVectorReady(first, models, tenantId)) {
+            throw new BusinessException("知识库未完成有效的向量检索配置: " + first.getTitle());
+        }
+        for (BigInteger id : group) {
+            DocumentCollection current = collections.get(id);
+            if (!isVectorReady(current, models, tenantId)) {
+                throw new BusinessException("知识库未完成有效的向量检索配置: " + current.getTitle());
+            }
+            if (!Objects.equals(
+                    first.getVectorEmbedModelId(),
+                    current.getVectorEmbedModelId())
+                    || !Objects.equals(
+                    first.getDimensionOfVectorModel(),
+                    current.getDimensionOfVectorModel())
+                    || !Objects.equals(
+                    first.getTenantId(), current.getTenantId())) {
+                throw new BusinessException("多知识库检索要求使用相同的 Embedding 模型和向量维度");
+            }
+        }
+    }
+
+    private boolean isVectorReady(
+            DocumentCollection collection,
+            Map<BigInteger, Model> models,
+            BigInteger tenantId) {
+        if (collection == null
+                || collection.getId() == null
+                || !Objects.equals(collection.getTenantId(), tenantId)
+                || !Boolean.TRUE.equals(collection.getVectorStoreEnable())
+                || collection.getVectorEmbedModelId() == null
+                || collection.getDimensionOfVectorModel() == null
+                || collection.getDimensionOfVectorModel() <= 0
+                || collection.getVectorStoreCollection() == null
+                || collection.getVectorStoreCollection().isBlank()) {
+            return false;
+        }
+        Model model = models.get(collection.getVectorEmbedModelId());
+        return model != null
+                && Model.MODEL_TYPES[1].equals(model.getModelType())
+                && model.getModelProvider() != null
+                && text(model.getModelProvider().getProviderType()) != null
+                && Objects.equals(model.getTenantId(), tenantId);
+    }
+
+    private Map<BigInteger, Model> loadModels(
+            Collection<DocumentCollection> collections) {
+        Set<BigInteger> modelIds = new LinkedHashSet<>();
+        for (DocumentCollection collection : collections) {
+            if (collection != null && collection.getVectorEmbedModelId() != null) {
+                modelIds.add(collection.getVectorEmbedModelId());
+            }
+        }
+        if (modelIds.isEmpty()) {
+            return Collections.emptyMap();
+        }
+        List<Model> loaded = modelService.listModelInstances(modelIds);
+        Map<BigInteger, Model> result = new LinkedHashMap<>();
+        if (loaded != null) {
+            for (Model model : loaded) {
+                if (model != null && model.getId() != null) {
+                    result.put(model.getId(), model);
+                }
+            }
+        }
+        return result;
+    }
+
+    private Map<String, Object> toContract(
+            DocumentCollection collection,
+            Map<BigInteger, Model> models,
+            BigInteger tenantId) {
+        if (!isVectorReady(collection, models, tenantId)) {
+            throw new BusinessException("知识库未完成有效的向量检索配置: "
+                    + (collection == null ? "" : collection.getTitle()));
+        }
+        Model model = models.get(collection.getVectorEmbedModelId());
+        Map<String, Object> contract = new LinkedHashMap<>();
+        contract.put("knowledgeId", String.valueOf(collection.getId()));
+        contract.put("tenantId", String.valueOf(collection.getTenantId()));
+        contract.put("embeddingModelId", String.valueOf(model.getId()));
+        contract.put("embeddingDimension", collection.getDimensionOfVectorModel());
+        contract.put("vectorStoreCollection", collection.getVectorStoreCollection());
+        contract.put("vectorStoreType", nullableText(collection.getVectorStoreType()));
+        contract.put("modelProviderId", nullableString(model.getProviderId()));
+        contract.put(
+                "modelProviderType",
+                nullableText(model.getModelProvider().getProviderType()));
+        contract.put("modelType", model.getModelType());
+        contract.put("modelName", nullableText(model.getModelName()));
+        contract.put("modelEndpoint", nullableText(model.getEndpoint()));
+        contract.put("modelRequestPath", nullableText(model.getRequestPath()));
+        return contract;
+    }
+
+    private Map<BigInteger, DocumentCollection> loadCollections(
+            Set<BigInteger> ids,
+            BigInteger tenantId) {
+        if (tenantId == null) {
+            throw new BusinessException("工作流租户不能为空");
+        }
+        List<DocumentCollection> loaded = documentCollectionService.listByIds(ids);
+        Map<BigInteger, DocumentCollection> collections = new LinkedHashMap<>();
+        if (loaded != null) {
+            for (DocumentCollection collection : loaded) {
+                if (collection != null && collection.getId() != null) {
+                    collections.put(collection.getId(), collection);
+                }
+            }
+        }
+        if (collections.size() != ids.size()) {
+            throw new BusinessException("工作流引用的知识库不存在或已失效");
+        }
+        for (DocumentCollection collection : collections.values()) {
+            if (!Objects.equals(tenantId, collection.getTenantId())) {
+                throw new BusinessException("工作流引用了其他租户的知识库");
+            }
+        }
+        return collections;
+    }
+
+    private List<List<BigInteger>> readKnowledgeGroups(String content) {
+        if (content == null || content.isBlank()) {
+            return List.of();
+        }
+        JSONObject root;
+        try {
+            root = JSON.parseObject(content);
+        } catch (RuntimeException exception) {
+            throw new BusinessException("工作流内容不是合法JSON");
+        }
+        JSONArray nodes = root.getJSONArray("nodes");
+        if (nodes == null || nodes.isEmpty()) {
+            return List.of();
+        }
+        List<List<BigInteger>> groups = new ArrayList<>();
+        for (int index = 0; index < nodes.size(); index++) {
+            JSONObject node = nodes.getJSONObject(index);
+            JSONObject data = node == null ? null : node.getJSONObject("data");
+            if (data == null || !"knowledgeNode".equals(nodeType(node, data))) {
+                continue;
+            }
+            List<BigInteger> group = new ArrayList<>();
+            Set<BigInteger> unique = new LinkedHashSet<>();
+            Object rawIds = data.get("knowledgeIds");
+            if (rawIds instanceof JSONArray ids && !ids.isEmpty()) {
+                for (Object rawId : ids) {
+                    BigInteger id = bigInteger(rawId);
+                    if (!unique.add(id)) {
+                        throw new BusinessException("知识库节点不能重复选择同一知识库");
+                    }
+                    group.add(id);
+                }
+            } else {
+                group.add(bigInteger(data.get("knowledgeId")));
+            }
+            groups.add(List.copyOf(group));
+        }
+        return List.copyOf(groups);
+    }
+
+    private List<List<BigInteger>> onlyMultiGroups(
+            List<List<BigInteger>> knowledgeGroups) {
+        if (knowledgeGroups == null || knowledgeGroups.isEmpty()) {
+            return List.of();
+        }
+        return knowledgeGroups.stream()
+                .filter(Objects::nonNull)
+                .filter(group -> group.size() > 1)
+                .map(List::copyOf)
+                .toList();
+    }
+
+    private List<Map<String, Object>> readSnapshotContracts(Object value) {
+        if (value == null) {
+            return List.of();
+        }
+        JSONArray array;
+        try {
+            array = value instanceof JSONArray jsonArray
+                    ? jsonArray
+                    : JSON.parseArray(JSON.toJSONString(value));
+        } catch (RuntimeException exception) {
+            throw new BusinessException("工作流知识库发布契约无效");
+        }
+        List<Map<String, Object>> result = new ArrayList<>();
+        for (int index = 0; index < array.size(); index++) {
+            JSONObject object = array.getJSONObject(index);
+            if (object == null) {
+                throw new BusinessException("工作流知识库发布契约无效");
+            }
+            Map<String, Object> contract = new LinkedHashMap<>();
+            contract.put("knowledgeId", text(object.get("knowledgeId")));
+            contract.put("tenantId", text(object.get("tenantId")));
+            contract.put("embeddingModelId", text(object.get("embeddingModelId")));
+            contract.put("embeddingDimension", object.getInteger("embeddingDimension"));
+            contract.put("vectorStoreCollection", nullableText(object.getString("vectorStoreCollection")));
+            contract.put("vectorStoreType", nullableText(object.getString("vectorStoreType")));
+            contract.put("modelProviderId", nullableText(object.getString("modelProviderId")));
+            contract.put("modelProviderType", nullableText(object.getString("modelProviderType")));
+            contract.put("modelType", nullableText(object.getString("modelType")));
+            contract.put("modelName", nullableText(object.getString("modelName")));
+            contract.put("modelEndpoint", nullableText(object.getString("modelEndpoint")));
+            contract.put("modelRequestPath", nullableText(object.getString("modelRequestPath")));
+            result.add(contract);
+        }
+        return List.copyOf(result);
+    }
+
+    private String nodeType(JSONObject node, JSONObject data) {
+        String rootType = text(node.getString("type"));
+        String dataType = text(data.getString("type"));
+        if (rootType != null && dataType != null
+                && !Objects.equals(rootType, dataType)) {
+            throw new BusinessException("工作流节点类型与节点数据类型不一致");
+        }
+        return rootType == null ? dataType : rootType;
+    }
+
+    private BigInteger bigInteger(Object value) {
+        String normalized = text(value);
+        if (normalized == null) {
+            throw new BusinessException("知识库或租户 ID 无效");
+        }
+        try {
+            BigInteger result = new BigInteger(normalized);
+            if (result.signum() <= 0) {
+                throw new NumberFormatException("non-positive");
+            }
+            return result;
+        } catch (NumberFormatException exception) {
+            throw new BusinessException("知识库或租户 ID 无效");
+        }
+    }
+
+    private String text(Object value) {
+        if (value == null) {
+            return null;
+        }
+        String result = String.valueOf(value).trim();
+        return result.isEmpty() ? null : result;
+    }
+
+    private String nullableText(String value) {
+        return text(value);
+    }
+
+    private String nullableString(Object value) {
+        return value == null ? null : String.valueOf(value);
+    }
+
+    private String fingerprint(Object value) {
+        try {
+            byte[] bytes = JSON.toJSONString(value)
+                    .getBytes(StandardCharsets.UTF_8);
+            return HexFormat.of().formatHex(
+                    MessageDigest.getInstance("SHA-256").digest(bytes));
+        } catch (NoSuchAlgorithmException exception) {
+            throw new IllegalStateException("SHA-256 is unavailable", exception);
+        }
+    }
+
+    private record ContractContext(
+            Map<BigInteger, DocumentCollection> collections,
+            Map<BigInteger, Model> models) {
+
+        private static ContractContext empty() {
+            return new ContractContext(
+                    Collections.emptyMap(),
+                    Collections.emptyMap());
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/repository/AgentWorkflowSnapshotFactory.java

@@ -1,5 +1,6 @@
 package tech.easyflow.ai.easyagentsflow.repository;
 
+import com.alibaba.fastjson2.JSON;
 import com.easyagents.flow.core.chain.ChainDefinition;
 import com.easyagents.flow.core.node.ConfirmNode;
 import com.easyagents.flow.core.parser.ChainParser;
@@ -84,9 +85,35 @@ public class AgentWorkflowSnapshotFactory {
         snapshot.put("englishName", workflow.getEnglishName());
         snapshot.put("revision", workflow.getRevision());
         snapshot.put("content", prepared.content());
+        snapshot.put("tenantId", workflow.getTenantId());
+        snapshot.put(
+                "publishedSnapshotJson",
+                knowledgeRuntimeSnapshot(workflow));
         return snapshot;
     }
 
+    /**
+     * 提取冻结执行所需的知识库契约，不携带工作流快照中的其他字段。
+     *
+     * @param workflow 已发布工作流
+     * @return 租户与知识库契约白名单
+     */
+    Map<String, Object> knowledgeRuntimeSnapshot(Workflow workflow) {
+        Map<String, Object> runtimeSnapshot = new LinkedHashMap<>();
+        runtimeSnapshot.put("tenantId", workflow.getTenantId());
+        Map<String, Object> publishedSnapshot =
+                workflow.getPublishedSnapshotJson();
+        Object contracts = publishedSnapshot == null
+                ? null
+                : publishedSnapshot.get("knowledgeContracts");
+        runtimeSnapshot.put(
+                "knowledgeContracts",
+                contracts == null
+                        ? java.util.List.of()
+                        : JSON.parse(JSON.toJSONString(contracts)));
+        return runtimeSnapshot;
+    }
+
     /**
      * Agent 可执行 Workflow 的准备结果。
      *

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/repository/FrozenWorkflowDefinitionRegistry.java

@@ -2,8 +2,11 @@ package tech.easyflow.ai.easyagentsflow.repository;
 
 import com.easyagents.flow.core.chain.ChainDefinition;
 import org.springframework.stereotype.Component;
+import tech.easyflow.ai.easyagentsflow.knowledge.WorkflowKnowledgeContractService;
 import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.common.web.exceptions.BusinessException;
 
+import java.math.BigInteger;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
@@ -24,6 +27,7 @@ public class FrozenWorkflowDefinitionRegistry {
     private static final int MAX_ENTRIES = 512;
 
     private final AgentWorkflowSnapshotFactory snapshotFactory;
+    private final WorkflowKnowledgeContractService workflowKnowledgeContractService;
     private final Map<String, ChainDefinition> definitions =
             new LinkedHashMap<>(32, 0.75F, true);
     private final Map<String, Workflow> workflows =
@@ -33,9 +37,13 @@ public class FrozenWorkflowDefinitionRegistry {
      * 创建冻结定义注册表。
      *
      * @param snapshotFactory Agent Workflow 冻结快照工厂
+     * @param workflowKnowledgeContractService 知识库契约服务
      */
-    public FrozenWorkflowDefinitionRegistry(AgentWorkflowSnapshotFactory snapshotFactory) {
+    public FrozenWorkflowDefinitionRegistry(
+            AgentWorkflowSnapshotFactory snapshotFactory,
+            WorkflowKnowledgeContractService workflowKnowledgeContractService) {
         this.snapshotFactory = snapshotFactory;
+        this.workflowKnowledgeContractService = workflowKnowledgeContractService;
     }
 
     /**
@@ -48,7 +56,19 @@ public class FrozenWorkflowDefinitionRegistry {
     public String register(Workflow workflow) {
         AgentWorkflowSnapshotFactory.PreparedWorkflow prepared = snapshotFactory.prepare(workflow);
         String preparedContent = prepared.content();
-        String id = PREFIX + workflow.getId() + ":" + sha256(preparedContent);
+        Map<String, Object> runtimeSnapshot =
+                snapshotFactory.knowledgeRuntimeSnapshot(workflow);
+        if (workflow.getTenantId() == null
+                || workflow.getTenantId().signum() <= 0) {
+            throw new BusinessException("绑定工作流租户快照不完整，请重新发布工作流");
+        }
+        String contractFingerprint = workflowKnowledgeContractService
+                .fingerprintSnapshotContracts(
+                        runtimeSnapshot.get("knowledgeContracts"));
+        String id = PREFIX + workflow.getId()
+                + ":" + workflow.getTenantId()
+                + ":" + contractFingerprint
+                + ":" + sha256(preparedContent);
         synchronized (definitions) {
             if (definitions.containsKey(id)) {
                 definitions.get(id);
@@ -59,7 +79,7 @@ public class FrozenWorkflowDefinitionRegistry {
             definition.setName(workflow.getEnglishName());
             definition.setDescription(workflow.getDescription());
             definitions.put(id, definition);
-            workflows.put(id, workflow);
+            workflows.put(id, frozenWorkflow(workflow, runtimeSnapshot));
             while (definitions.size() > MAX_ENTRIES) {
                 String eldest = definitions.keySet().iterator().next();
                 definitions.remove(eldest);
@@ -100,9 +120,66 @@ public class FrozenWorkflowDefinitionRegistry {
      * @return 是否冻结定义
      */
     public boolean isFrozen(String definitionId) {
+        return isFrozenDefinitionId(definitionId);
+    }
+
+    /**
+     * 判断定义 ID 是否属于冻结 Agent 工作流，不触发注册表实例创建。
+     *
+     * @param definitionId 定义 ID
+     * @return 是否冻结定义
+     */
+    public static boolean isFrozenDefinitionId(String definitionId) {
         return definitionId != null && definitionId.startsWith(PREFIX);
     }
 
+    /**
+     * 解析冻结定义中可独立校验的租户和知识库契约指纹。
+     *
+     * @param definitionId 冻结定义 ID
+     * @return 冻结定义身份
+     */
+    public static FrozenDefinitionIdentity parseIdentity(String definitionId) {
+        if (!isFrozenDefinitionId(definitionId)) {
+            throw new IllegalArgumentException("Not a frozen workflow definition");
+        }
+        String[] parts = definitionId.substring(PREFIX.length())
+                .split(":", 4);
+        if (parts.length != 4
+                || !parts[2].matches("[0-9a-f]{64}")
+                || !parts[3].matches("[0-9a-f]{64}")) {
+            throw new IllegalArgumentException("Invalid frozen workflow definition");
+        }
+        try {
+            BigInteger workflowId = new BigInteger(parts[0]);
+            BigInteger tenantId = new BigInteger(parts[1]);
+            if (workflowId.signum() <= 0 || tenantId.signum() <= 0) {
+                throw new NumberFormatException("non-positive");
+            }
+            return new FrozenDefinitionIdentity(
+                    workflowId, tenantId, parts[2]);
+        } catch (NumberFormatException exception) {
+            throw new IllegalArgumentException(
+                    "Invalid frozen workflow definition", exception);
+        }
+    }
+
+    private Workflow frozenWorkflow(
+            Workflow source,
+            Map<String, Object> runtimeSnapshot) {
+        Workflow frozen = new Workflow();
+        frozen.setId(source.getId());
+        frozen.setTenantId(source.getTenantId());
+        frozen.setTitle(source.getTitle());
+        frozen.setDescription(source.getDescription());
+        frozen.setEnglishName(source.getEnglishName());
+        frozen.setRevision(source.getRevision());
+        frozen.setContent(source.getContent());
+        frozen.setPublishedSnapshotJson(
+                new LinkedHashMap<>(runtimeSnapshot));
+        return frozen;
+    }
+
     private String sha256(String content) {
         try {
             return HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256")
@@ -111,4 +188,17 @@ public class FrozenWorkflowDefinitionRegistry {
             throw new IllegalStateException("SHA-256 is unavailable", exception);
         }
     }
+
+    /**
+     * 冻结定义中不依赖进程内 LRU 状态的执行身份。
+     *
+     * @param workflowId 工作流 ID
+     * @param tenantId 工作流租户
+     * @param knowledgeContractFingerprint 知识库契约指纹
+     */
+    public record FrozenDefinitionIdentity(
+            BigInteger workflowId,
+            BigInteger tenantId,
+            String knowledgeContractFingerprint) {
+    }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/service/TinyFlowService.java

@@ -1,5 +1,6 @@
 package tech.easyflow.ai.easyagentsflow.service;
 
+import com.easyagents.document.core.exception.DocumentParseException;
 import com.easyagents.flow.core.chain.ChainState;
 import com.easyagents.flow.core.chain.ExceptionSummary;
 import com.easyagents.flow.core.chain.NodeState;
@@ -141,9 +142,12 @@ public class TinyFlowService {
             node.setResult(resolved);
         }
 
-        // 只有当参数不为空时才覆盖
+        if (nodeState != null
-        if (chainState.getSuspendForParameters() != null) {
+                && nodeState.getStatus() == NodeStatus.SUSPEND
+                && chainState.getSuspendForParameters() != null) {
             node.setSuspendForParameters(chainState.getSuspendForParameters());
+        } else {
+            node.setSuspendForParameters(null);
         }
     }
 
@@ -165,6 +169,10 @@ public class TinyFlowService {
         String rootMessage = StringUtil.hasText(error.getRootCauseMessage())
                 ? error.getRootCauseMessage()
                 : error.getMessage();
+        if (DocumentParseException.class.getName().equals(rootClass)
+                && StringUtil.hasText(rootMessage)) {
+            return rootMessage;
+        }
         if (StringUtil.noText(rootClass)) {
             return rootMessage;
         }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/service/WorkflowCheckService.java

@@ -3,9 +3,14 @@ package tech.easyflow.ai.easyagentsflow.service;
 import com.alibaba.fastjson2.JSON;
 import com.alibaba.fastjson2.JSONArray;
 import com.alibaba.fastjson2.JSONObject;
+import com.easyagents.flow.core.chain.DataType;
+import com.easyagents.flow.core.node.ConfirmNode;
 import com.easyagents.flow.core.parser.ChainParser;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
+import tech.easyflow.ai.config.MultiKnowledgeRetrievalProperties;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckIssue;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckResult;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
@@ -40,6 +45,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
 /**
@@ -47,18 +53,29 @@ import java.util.stream.Collectors;
  */
 @Service
 public class WorkflowCheckService {
+    private static final Logger LOGGER = LoggerFactory.getLogger(
+            WorkflowCheckService.class);
+    private static final long SLOW_CHECK_THRESHOLD_MS = 500L;
     private static final String LEVEL_ERROR = "ERROR";
     private static final String LEVEL_WARNING = "WARNING";
     private static final String TYPE_START = "startNode";
     private static final String TYPE_END = "endNode";
     private static final String TYPE_LOOP = "loopNode";
     private static final String TYPE_CONDITION = "conditionNode";
+    private static final String TYPE_CONFIRM = "confirmNode";
+    private static final String TYPE_KNOWLEDGE = "knowledgeNode";
+    private static final Set<String> CONFIRM_ARRAY_LEFT_OPERATORS = Set.of(
+            "contains", "notContains", "isEmpty", "isNotEmpty");
     private static final String TYPE_WORKFLOW = "workflow-node";
     private static final String TYPE_PLUGIN = "plugin-node";
     private static final String TYPE_MAKE_FILE = "make-file";
     private static final String SYSTEM_START_PARAM_NAME = "user_input";
     private static final int MIN_LOOP_COUNT = 1;
     private static final int MAX_LOOP_COUNT = 300;
+    private static final int DEFAULT_MAX_KNOWLEDGE_SOURCES = 8;
+    private static final int DEFAULT_MAX_MULTI_KNOWLEDGE_LIMIT = 200;
+    private static final Pattern COMPLETE_VARIABLE_REFERENCE =
+            Pattern.compile("^\\{\\{\\s*[^\\s{}][^{}]*?\\s*}}$");
     private static final String JOIN_MODE_ANY = "any";
     private static final String JOIN_MODE_ALL = "all";
 
@@ -74,6 +91,8 @@ public class WorkflowCheckService {
     private PluginItemService pluginItemService;
     @Resource
     private WorkflowPluginSnapshotResolver workflowPluginSnapshotResolver;
+    @Resource
+    private MultiKnowledgeRetrievalProperties multiKnowledgeRetrievalProperties;
 
     public WorkflowCheckResult checkWorkflow(BigInteger workflowId, WorkflowCheckStage stage) {
         if (workflowId == null) {
@@ -90,9 +109,11 @@ public class WorkflowCheckService {
         if (stage == null) {
             throw new BusinessException("校验阶段不能为空");
         }
+        long checkStartedAt = System.nanoTime();
         List<WorkflowCheckIssue> issues = new ArrayList<>();
         Set<String> issueKeys = new LinkedHashSet<>();
         ParsedWorkflow parsedWorkflow = parseAndCheckBase(content, issues, issueKeys);
+        long baseFinishedAt = System.nanoTime();
         if (parsedWorkflow != null) {
             List<NodeView> startNodes = parsedWorkflow.nodes.stream()
                     .filter(node -> TYPE_START.equals(node.type))
@@ -100,11 +121,22 @@ public class WorkflowCheckService {
             checkStartFormSchema(startNodes, issues, issueKeys);
             checkPluginSchemaHashes(parsedWorkflow, issues, issueKeys);
         }
+        long schemaFinishedAt = System.nanoTime();
 
         if (stage == WorkflowCheckStage.PRE_EXECUTE && parsedWorkflow != null) {
             runStrictChecks(content, parsedWorkflow, currentWorkflowId, issues, issueKeys);
         }
-        return buildResult(stage, issues);
+        WorkflowCheckResult result = buildResult(stage, issues);
+        logSlowCheck(
+                stage,
+                currentWorkflowId,
+                parsedWorkflow,
+                issues.size(),
+                checkStartedAt,
+                baseFinishedAt,
+                schemaFinishedAt,
+                System.nanoTime());
+        return result;
     }
 
     public void checkOrThrow(String content, WorkflowCheckStage stage, BigInteger currentWorkflowId) {
@@ -169,6 +201,21 @@ public class WorkflowCheckService {
             if (!StringUtils.hasText(node.type) || !parserMap.containsKey(node.type)) {
                 addIssue(issues, issueKeys, "NODE_TYPE_UNKNOWN", "节点类型无法识别: " + safe(node.type), node.id, null, node.name);
             }
+            String dataType = node.data == null
+                    ? null
+                    : trimToNull(node.data.getString("type"));
+            if (StringUtils.hasText(node.type)
+                    && StringUtils.hasText(dataType)
+                    && !Objects.equals(node.type, dataType)) {
+                addIssue(
+                        issues,
+                        issueKeys,
+                        "NODE_TYPE_MISMATCH",
+                        "节点类型与节点数据类型不一致",
+                        node.id,
+                        null,
+                        node.name);
+            }
             if (StringUtils.hasText(node.parentId) && node.parentId.equals(node.id)) {
                 addIssue(issues, issueKeys, "NODE_PARENT_SELF", "节点不能引用自己作为父节点", node.id, null, node.name);
             }
@@ -184,6 +231,9 @@ public class WorkflowCheckService {
         }
         checkLoopConfigurations(nodes, nodeMap, issues, issueKeys);
         checkConditionConfigurations(nodes, issues, issueKeys);
+        checkKnowledgeConfigurations(nodes, issues, issueKeys);
+        checkConfirmConfigurations(nodes, issues, issueKeys);
+        checkConfirmOutputReferences(nodes, issues, issueKeys);
 
         List<EdgeView> edges = new ArrayList<>();
         Set<String> edgeIds = new HashSet<>();
@@ -239,6 +289,195 @@ public class WorkflowCheckService {
         return parsedWorkflow;
     }
 
+    /**
+     * 校验知识库节点的新旧引用字段和多库向量模式约束。
+     */
+    private void checkKnowledgeConfigurations(
+            List<NodeView> nodes,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        for (NodeView node : nodes) {
+            if (!TYPE_KNOWLEDGE.equals(node.type) || node.data == null) {
+                continue;
+            }
+            checkKnowledgeOutputContract(node, issues, issueKeys);
+            List<String> knowledgeIds = new ArrayList<>();
+            if (node.data.containsKey("knowledgeIds")) {
+                Object rawIds = node.data.get("knowledgeIds");
+                if (!(rawIds instanceof JSONArray ids) || ids.isEmpty()) {
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "KNOWLEDGE_IDS_INVALID",
+                            "知识库节点至少需要选择一个知识库",
+                            node.id,
+                            null,
+                            node.name);
+                    continue;
+                }
+                Set<String> unique = new LinkedHashSet<>();
+                for (Object rawId : ids) {
+                    String id = trimToNull(rawId == null
+                            ? null
+                            : String.valueOf(rawId));
+                    if (id == null || !id.matches("[0-9]+")) {
+                        addIssue(
+                                issues,
+                                issueKeys,
+                                "KNOWLEDGE_IDS_INVALID",
+                                "知识库节点包含无效的知识库ID",
+                                node.id,
+                                null,
+                                node.name);
+                        continue;
+                    }
+                    if (!unique.add(id)) {
+                        addIssue(
+                                issues,
+                                issueKeys,
+                                "KNOWLEDGE_IDS_DUPLICATE",
+                                "知识库节点不能重复选择同一知识库",
+                                node.id,
+                                null,
+                                node.name);
+                    }
+                }
+                knowledgeIds.addAll(unique);
+                if (knowledgeIds.size() > maxKnowledgeSources()) {
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "KNOWLEDGE_SOURCE_LIMIT_EXCEEDED",
+                            "知识库节点选择数量超过平台上限",
+                            node.id,
+                            null,
+                            node.name);
+                }
+            } else {
+                String legacyId = trimToNull(node.data.getString("knowledgeId"));
+                if (legacyId == null || !legacyId.matches("[0-9]+")) {
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "KNOWLEDGE_ID_INVALID",
+                            "知识库节点需要选择知识库",
+                            node.id,
+                            null,
+                            node.name);
+                    continue;
+                }
+                knowledgeIds.add(legacyId);
+            }
+
+            String retrievalMode = trimToNull(
+                    node.data.getString("retrievalMode"));
+            if (knowledgeIds.size() > 1
+                    && !"VECTOR".equalsIgnoreCase(retrievalMode)) {
+                addIssue(
+                        issues,
+                        issueKeys,
+                        "MULTI_KNOWLEDGE_MODE_INVALID",
+                        "多知识库检索仅支持向量检索",
+                        node.id,
+                        null,
+                        node.name);
+            }
+            String limit = trimToNull(node.data.getString("limit"));
+            if (limit != null
+                    && !COMPLETE_VARIABLE_REFERENCE.matcher(limit).matches()) {
+                try {
+                    int parsedLimit = Integer.parseInt(limit);
+                    if (parsedLimit <= 0
+                            || (knowledgeIds.size() > 1
+                            && parsedLimit > maxMultiKnowledgeLimit())) {
+                        throw new NumberFormatException("non-positive");
+                    }
+                } catch (NumberFormatException exception) {
+                    addIssue(
+                            issues,
+                            issueKeys,
+                            "KNOWLEDGE_LIMIT_INVALID",
+                            "知识库节点最终返回条数必须为正整数或有效变量引用",
+                            node.id,
+                            null,
+                            node.name);
+                }
+            }
+        }
+    }
+
+    /**
+     * 知识库节点只允许暴露稳定的 documents 输出及四个历史子字段。
+     */
+    private void checkKnowledgeOutputContract(
+            NodeView node,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        if (!node.data.containsKey("outputDefs")) {
+            return;
+        }
+        Object rawOutputDefs = node.data.get("outputDefs");
+        if (rawOutputDefs instanceof JSONArray outputDefs
+                && outputDefs.size() == 1
+                && isCanonicalKnowledgeDocumentsOutput(
+                outputDefs.getJSONObject(0))) {
+            return;
+        }
+        addIssue(
+                issues,
+                issueKeys,
+                "KNOWLEDGE_OUTPUT_SCHEMA_INVALID",
+                "知识库节点输出参数必须为 documents，并仅包含 title、content、documentId、knowledgeId",
+                node.id,
+                null,
+                node.name);
+    }
+
+    private boolean isCanonicalKnowledgeDocumentsOutput(JSONObject output) {
+        if (output == null
+                || !"documents".equals(output.getString("name"))
+                || !"Array".equalsIgnoreCase(output.getString("dataType"))) {
+            return false;
+        }
+        JSONArray children = output.getJSONArray("children");
+        if (children == null || children.size() != 4) {
+            return false;
+        }
+        Map<String, String> expectedTypes = Map.of(
+                "title", "String",
+                "content", "String",
+                "documentId", "Number",
+                "knowledgeId", "Number");
+        Set<String> names = new LinkedHashSet<>();
+        for (int index = 0; index < children.size(); index++) {
+            JSONObject child = children.getJSONObject(index);
+            if (child == null) {
+                return false;
+            }
+            String name = trimToNull(child.getString("name"));
+            String expectedType = expectedTypes.get(name);
+            if (expectedType == null
+                    || !names.add(name)
+                    || !expectedType.equalsIgnoreCase(
+                    child.getString("dataType"))) {
+                return false;
+            }
+        }
+        return names.equals(expectedTypes.keySet());
+    }
+
+    private int maxKnowledgeSources() {
+        return multiKnowledgeRetrievalProperties == null
+                ? DEFAULT_MAX_KNOWLEDGE_SOURCES
+                : multiKnowledgeRetrievalProperties.getMaxSources();
+    }
+
+    private int maxMultiKnowledgeLimit() {
+        return multiKnowledgeRetrievalProperties == null
+                ? DEFAULT_MAX_MULTI_KNOWLEDGE_LIMIT
+                : multiKnowledgeRetrievalProperties.getTotalCandidateLimit();
+    }
+
     /**
      * 校验节点汇聚模式及其静态可证明的到达安全性。
      *
@@ -514,6 +753,288 @@ public class WorkflowCheckService {
         }
     }
 
+    /**
+     * 校验用户确认节点配置及其对外输出定义。
+     */
+    private void checkConfirmConfigurations(
+            List<NodeView> nodes,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        for (NodeView node : nodes) {
+            if (!TYPE_CONFIRM.equals(node.type)) {
+                continue;
+            }
+            if (node.data == null) {
+                addIssue(
+                        issues,
+                        issueKeys,
+                        "CONFIRM_CONFIGURATION_INVALID",
+                        "用户确认节点配置不能为空",
+                        node.id,
+                        null,
+                        node.name);
+                continue;
+            }
+
+            ConfirmNode configuration;
+            try {
+                validateConfirmConfigurationTypes(node.data);
+                checkConfirmOutputDefinitions(
+                        node,
+                        Boolean.TRUE.equals(node.data.get("multiple")),
+                        issues,
+                        issueKeys);
+                configuration = node.data.toJavaObject(ConfirmNode.class);
+                configuration.validateConfiguration();
+            } catch (Exception exception) {
+                addIssue(
+                        issues,
+                        issueKeys,
+                        "CONFIRM_CONFIGURATION_INVALID",
+                        "用户确认节点配置无效: " + shortError(exception),
+                        node.id,
+                        null,
+                        node.name);
+                continue;
+            }
+        }
+    }
+
+    private void validateConfirmConfigurationTypes(JSONObject data) {
+        for (String key : data.keySet()) {
+            if (!ConfirmNode.SUPPORTED_CONFIGURATION_KEYS.contains(key)) {
+                throw new IllegalArgumentException(
+                        "用户确认节点包含无效配置字段: " + key);
+            }
+        }
+        if (!(data.get("message") instanceof String)) {
+            throw new IllegalArgumentException("用户确认节点提示内容必须为字符串");
+        }
+        if (!(data.get("multiple") instanceof Boolean)) {
+            throw new IllegalArgumentException("用户确认节点选择方式必须为布尔值");
+        }
+
+        Object optionsValue = data.get("options");
+        if (optionsValue == null) {
+            return;
+        }
+        if (!(optionsValue instanceof JSONArray options)) {
+            throw new IllegalArgumentException("用户确认节点选项必须为数组");
+        }
+        for (Object option : options) {
+            if (!(option instanceof String)) {
+                throw new IllegalArgumentException("用户确认节点选项内容必须为字符串");
+            }
+        }
+    }
+
+    private void checkConfirmOutputDefinitions(
+            NodeView node,
+            boolean multiple,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        Object outputDefsValue = node.data.get("outputDefs");
+        if (!(outputDefsValue instanceof JSONArray outputDefs)
+                || outputDefs.size() != 1) {
+            addConfirmOutputIssue(node, issues, issueKeys);
+            return;
+        }
+        Object outputValue = outputDefs.get(0);
+        if (!(outputValue instanceof JSONObject output)) {
+            addConfirmOutputIssue(node, issues, issueKeys);
+            return;
+        }
+        String expectedType = multiple
+                ? DataType.Array_String.toString()
+                : DataType.String.toString();
+        if (trimToNull(output.getString("name")) == null
+                || !expectedType.equals(
+                        trimToNull(output.getString("dataType")))) {
+            addConfirmOutputIssue(node, issues, issueKeys);
+        }
+    }
+
+    private void addConfirmOutputIssue(
+            NodeView node,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        addIssue(
+                issues,
+                issueKeys,
+                "CONFIRM_OUTPUT_SCHEMA_INVALID",
+                "用户确认节点必须配置唯一非空输出参数，且类型与选择方式一致",
+                node.id,
+                null,
+                node.name);
+    }
+
+    /**
+     * 校验下游节点保存的确认输出引用仍然存在且类型一致。
+     */
+    private void checkConfirmOutputReferences(
+            List<NodeView> nodes,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        ConfirmOutputIndex confirmOutputs = new ConfirmOutputIndex();
+        for (NodeView node : nodes) {
+            if (!TYPE_CONFIRM.equals(node.type) || node.data == null) {
+                continue;
+            }
+            try {
+                ConfirmNode configuration = node.data.toJavaObject(ConfirmNode.class);
+                configuration.validateConfiguration();
+                confirmOutputs.put(
+                        node.id,
+                        configuration.resolveOutputName(),
+                        configuration.isMultiple()
+                                ? DataType.Array_String.toString()
+                                : DataType.String.toString());
+            } catch (Exception ignored) {
+                // 配置错误已由 checkConfirmConfigurations 给出精确问题。
+            }
+        }
+        if (confirmOutputs.isEmpty()) {
+            return;
+        }
+        for (NodeView node : nodes) {
+            if (node.data != null) {
+                checkConfirmOutputReferences(
+                        node.data,
+                        node,
+                        confirmOutputs,
+                        issues,
+                        issueKeys);
+            }
+        }
+    }
+
+    private void checkConfirmOutputReferences(
+            Object value,
+            NodeView consumer,
+            ConfirmOutputIndex confirmOutputs,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        if (value instanceof JSONObject object) {
+            if ("ref".equals(trimToNull(object.getString("refType")))) {
+                checkConfirmOutputReference(
+                        object.getString("ref"),
+                        object.getString("dataType"),
+                        true,
+                        consumer,
+                        confirmOutputs,
+                        issues,
+                        issueKeys);
+            }
+            String leftType = checkConfirmOutputReference(
+                    object.getString("leftRef"),
+                    null,
+                    false,
+                    consumer,
+                    confirmOutputs,
+                    issues,
+                    issueKeys);
+            String operator = trimToNull(object.getString("operator"));
+            if (DataType.Array_String.toString().equals(leftType)
+                    && !CONFIRM_ARRAY_LEFT_OPERATORS.contains(operator)) {
+                addConfirmConditionTypeIssue(
+                        object.getString("leftRef"),
+                        operator,
+                        consumer,
+                        issues,
+                        issueKeys);
+            }
+            if ("ref".equals(trimToNull(object.getString("rightType")))) {
+                String rightType = checkConfirmOutputReference(
+                        object.getString("rightRef"),
+                        null,
+                        false,
+                        consumer,
+                        confirmOutputs,
+                        issues,
+                        issueKeys);
+                if (DataType.Array_String.toString().equals(rightType)) {
+                    addConfirmConditionTypeIssue(
+                            object.getString("rightRef"),
+                            operator,
+                            consumer,
+                            issues,
+                            issueKeys);
+                }
+            }
+            for (Object child : object.values()) {
+                checkConfirmOutputReferences(
+                        child,
+                        consumer,
+                        confirmOutputs,
+                        issues,
+                        issueKeys);
+            }
+            return;
+        }
+        if (value instanceof JSONArray array) {
+            for (Object child : array) {
+                checkConfirmOutputReferences(
+                        child,
+                        consumer,
+                        confirmOutputs,
+                        issues,
+                        issueKeys);
+            }
+        }
+    }
+
+    private String checkConfirmOutputReference(
+            String rawReference,
+            String rawActualType,
+            boolean requireActualType,
+            NodeView consumer,
+            ConfirmOutputIndex confirmOutputs,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        String reference = trimToNull(rawReference);
+        if (reference == null) {
+            return null;
+        }
+        String expectedType = confirmOutputs.get(reference);
+        if (expectedType == null
+                && !confirmOutputs.referencesConfirmNode(reference)) {
+            return null;
+        }
+        String actualType = trimToNull(rawActualType);
+        boolean invalidType = actualType == null
+                ? requireActualType
+                : !Objects.equals(expectedType, actualType);
+        if (expectedType == null || invalidType) {
+            addIssue(
+                    issues,
+                    issueKeys,
+                    "CONFIRM_OUTPUT_REFERENCE_INVALID",
+                    "用户确认输出引用不存在或类型已变化: "
+                            + reference,
+                    consumer.id,
+                    null,
+                    consumer.name);
+        }
+        return expectedType;
+    }
+
+    private void addConfirmConditionTypeIssue(
+            String reference,
+            String operator,
+            NodeView consumer,
+            List<WorkflowCheckIssue> issues,
+            Set<String> issueKeys) {
+        addIssue(
+                issues,
+                issueKeys,
+                "CONFIRM_OUTPUT_REFERENCE_INVALID",
+                "用户确认多选输出不支持当前条件操作符: "
+                        + trimToNull(reference) + " (" + operator + ")",
+                consumer.id,
+                null,
+                consumer.name);
+    }
+
     /**
      * 将 JSON 条件规则转换为运行时规则对象。
      *
@@ -1674,6 +2195,65 @@ public class WorkflowCheckService {
         return result;
     }
 
+    private void logSlowCheck(
+            WorkflowCheckStage stage,
+            BigInteger workflowId,
+            ParsedWorkflow parsedWorkflow,
+            int issueCount,
+            long checkStartedAt,
+            long baseFinishedAt,
+            long schemaFinishedAt,
+            long checkFinishedAt) {
+        long totalMs = elapsedMillis(checkStartedAt, checkFinishedAt);
+        if (totalMs < SLOW_CHECK_THRESHOLD_MS) {
+            return;
+        }
+        LOGGER.warn(
+                "Workflow check is slow: stage={}, workflowId={}, nodes={}, "
+                        + "issues={}, baseMs={}, schemaMs={}, strictMs={}, totalMs={}",
+                stage,
+                workflowId,
+                parsedWorkflow == null ? 0 : parsedWorkflow.nodes.size(),
+                issueCount,
+                elapsedMillis(checkStartedAt, baseFinishedAt),
+                elapsedMillis(baseFinishedAt, schemaFinishedAt),
+                elapsedMillis(schemaFinishedAt, checkFinishedAt),
+                totalMs);
+    }
+
+    private long elapsedMillis(long startedAt, long finishedAt) {
+        return Math.max(0L, (finishedAt - startedAt) / 1_000_000L);
+    }
+
+    private static class ConfirmOutputIndex {
+        private final Map<String, String> outputTypes = new HashMap<>();
+        private final Set<String> nodeIds = new HashSet<>();
+
+        private void put(String nodeId, String outputName, String dataType) {
+            nodeIds.add(nodeId);
+            outputTypes.put(nodeId + "." + outputName, dataType);
+        }
+
+        private String get(String reference) {
+            return outputTypes.get(reference);
+        }
+
+        private boolean isEmpty() {
+            return outputTypes.isEmpty();
+        }
+
+        private boolean referencesConfirmNode(String reference) {
+            int separator = reference.indexOf('.');
+            while (separator > 0) {
+                if (nodeIds.contains(reference.substring(0, separator))) {
+                    return true;
+                }
+                separator = reference.indexOf('.', separator + 1);
+            }
+            return false;
+        }
+    }
+
     private void throwIfFailed(WorkflowCheckResult result) {
         if (result == null) {
             return;

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/easyagentsflow/service/WorkflowResumeService.java

@@ -0,0 +1,49 @@
+package tech.easyflow.ai.easyagentsflow.service;
+
+import com.easyagents.flow.core.chain.ChainResumeException;
+import com.easyagents.flow.core.chain.runtime.ChainExecutor;
+import org.springframework.stereotype.Service;
+import tech.easyflow.common.web.exceptions.BusinessException;
+
+import javax.annotation.Resource;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * 统一校验并恢复暂停中的工作流。
+ */
+@Service
+public class WorkflowResumeService {
+
+    @Resource
+    private ChainExecutor chainExecutor;
+
+    /**
+     * 恢复暂停实例，并将引擎校验失败转换为稳定的接口错误。
+     *
+     * @param executeId 工作流实例 ID
+     * @param variables 用户提交的确认参数
+     */
+    public void resume(String executeId, Map<String, Object> variables) {
+        Map<String, Object> submitted = variables == null
+                ? new LinkedHashMap<>()
+                : new LinkedHashMap<>(variables);
+        final boolean resumed;
+        try {
+            resumed = chainExecutor.resumeAsyncIfSuspended(
+                    executeId, submitted);
+        } catch (ChainResumeException exception) {
+            throw new BusinessException(
+                    400,
+                    40031,
+                    exception.getMessage(),
+                    exception);
+        }
+        if (!resumed) {
+            throw new BusinessException(
+                    409,
+                    40901,
+                    "当前执行状态不可恢复，仅暂停中的工作流允许恢复");
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/entity/DocumentChunkSyncTask.java

@@ -0,0 +1,78 @@
+package tech.easyflow.ai.entity;
+
+import com.mybatisflex.annotation.Column;
+import com.mybatisflex.annotation.Id;
+import com.mybatisflex.annotation.KeyType;
+import com.mybatisflex.annotation.Table;
+import tech.easyflow.common.entity.DateEntity;
+
+import java.io.Serializable;
+import java.math.BigInteger;
+import java.util.Date;
+
+/**
+ * 文档分块检索索引同步任务。
+ */
+@Table("tb_document_chunk_sync_task")
+public class DocumentChunkSyncTask extends DateEntity implements Serializable {
+
+    @Id(keyType = KeyType.Generator, value = "snowFlakeId")
+    private BigInteger id;
+    private BigInteger chunkId;
+    private BigInteger documentId;
+    private BigInteger documentCollectionId;
+    private String vectorCollection;
+    private String operation;
+    private Long syncVersion;
+    private String status;
+    private Integer attemptCount;
+    private Date nextRetryAt;
+    private Date lastDispatchedAt;
+    private String executionToken;
+    private Date leaseUntil;
+    private String errorCode;
+    private String errorMessage;
+    private Date created;
+    private BigInteger createdBy;
+    private Date modified;
+    private BigInteger modifiedBy;
+
+    public BigInteger getId() { return id; }
+    public void setId(BigInteger id) { this.id = id; }
+    public BigInteger getChunkId() { return chunkId; }
+    public void setChunkId(BigInteger chunkId) { this.chunkId = chunkId; }
+    public BigInteger getDocumentId() { return documentId; }
+    public void setDocumentId(BigInteger documentId) { this.documentId = documentId; }
+    public BigInteger getDocumentCollectionId() { return documentCollectionId; }
+    public void setDocumentCollectionId(BigInteger documentCollectionId) { this.documentCollectionId = documentCollectionId; }
+    public String getVectorCollection() { return vectorCollection; }
+    public void setVectorCollection(String vectorCollection) { this.vectorCollection = vectorCollection; }
+    public String getOperation() { return operation; }
+    public void setOperation(String operation) { this.operation = operation; }
+    public Long getSyncVersion() { return syncVersion; }
+    public void setSyncVersion(Long syncVersion) { this.syncVersion = syncVersion; }
+    public String getStatus() { return status; }
+    public void setStatus(String status) { this.status = status; }
+    public Integer getAttemptCount() { return attemptCount; }
+    public void setAttemptCount(Integer attemptCount) { this.attemptCount = attemptCount; }
+    public Date getNextRetryAt() { return nextRetryAt; }
+    public void setNextRetryAt(Date nextRetryAt) { this.nextRetryAt = nextRetryAt; }
+    public Date getLastDispatchedAt() { return lastDispatchedAt; }
+    public void setLastDispatchedAt(Date lastDispatchedAt) { this.lastDispatchedAt = lastDispatchedAt; }
+    public String getExecutionToken() { return executionToken; }
+    public void setExecutionToken(String executionToken) { this.executionToken = executionToken; }
+    public Date getLeaseUntil() { return leaseUntil; }
+    public void setLeaseUntil(Date leaseUntil) { this.leaseUntil = leaseUntil; }
+    public String getErrorCode() { return errorCode; }
+    public void setErrorCode(String errorCode) { this.errorCode = errorCode; }
+    public String getErrorMessage() { return errorMessage; }
+    public void setErrorMessage(String errorMessage) { this.errorMessage = errorMessage; }
+    @Override public Date getCreated() { return created; }
+    @Override public void setCreated(Date created) { this.created = created; }
+    public BigInteger getCreatedBy() { return createdBy; }
+    public void setCreatedBy(BigInteger createdBy) { this.createdBy = createdBy; }
+    @Override public Date getModified() { return modified; }
+    @Override public void setModified(Date modified) { this.modified = modified; }
+    public BigInteger getModifiedBy() { return modifiedBy; }
+    public void setModifiedBy(BigInteger modifiedBy) { this.modifiedBy = modifiedBy; }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/entity/DocumentCollection.java

@@ -8,6 +8,7 @@ import com.easyagents.store.milvus.MilvusVectorStore;
 import com.easyagents.store.milvus.MilvusVectorStoreConfig;
 import com.mybatisflex.annotation.Table;
 import tech.easyflow.ai.config.AiMilvusConfig;
+import tech.easyflow.ai.config.AiMilvusClientManager;
 import tech.easyflow.ai.chattime.availability.ChatTimeToolAvailabilityContext;
 import tech.easyflow.ai.easyagents.tool.DocumentCollectionTool;
 import tech.easyflow.ai.entity.base.DocumentCollectionBase;
@@ -103,8 +104,10 @@ public class DocumentCollection extends DocumentCollectionBase implements Visibi
 
     private DocumentStore milvusStore() {
         AiMilvusConfig aiMilvusConfig = SpringContextUtil.getBean(AiMilvusConfig.class);
+        AiMilvusClientManager clientManager = SpringContextUtil.getBean(AiMilvusClientManager.class);
+        clientManager.reconfigureIfNeeded(aiMilvusConfig);
         MilvusVectorStoreConfig milvusVectorStoreConfig = aiMilvusConfig.copyForCollection(this.getVectorStoreCollection());
-        return new MilvusVectorStore(milvusVectorStoreConfig);
+        return new MilvusVectorStore(milvusVectorStoreConfig, clientManager);
     }
 
     public Tool toFunction(boolean needEnglishName) {

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/entity/base/DocumentChunkBase.java

@@ -46,6 +46,18 @@ public class DocumentChunkBase implements Serializable {
     @Column(typeHandler = FastjsonTypeHandler.class, comment = "扩展元信息")
     private Map<String, Object> options;
 
+    @Column(comment = "检索索引同步状态")
+    private String indexSyncStatus;
+
+    @Column(comment = "检索索引同步版本")
+    private Long indexSyncVersion;
+
+    @Column(comment = "脱敏同步错误码")
+    private String indexSyncErrorCode;
+
+    @Column(comment = "脱敏同步错误摘要")
+    private String indexSyncErrorMessage;
+
     public BigInteger getId() {
         return id;
     }
@@ -94,4 +106,36 @@ public class DocumentChunkBase implements Serializable {
         this.options = options;
     }
 
+    public String getIndexSyncStatus() {
+        return indexSyncStatus;
+    }
+
+    public void setIndexSyncStatus(String indexSyncStatus) {
+        this.indexSyncStatus = indexSyncStatus;
+    }
+
+    public Long getIndexSyncVersion() {
+        return indexSyncVersion;
+    }
+
+    public void setIndexSyncVersion(Long indexSyncVersion) {
+        this.indexSyncVersion = indexSyncVersion;
+    }
+
+    public String getIndexSyncErrorCode() {
+        return indexSyncErrorCode;
+    }
+
+    public void setIndexSyncErrorCode(String indexSyncErrorCode) {
+        this.indexSyncErrorCode = indexSyncErrorCode;
+    }
+
+    public String getIndexSyncErrorMessage() {
+        return indexSyncErrorMessage;
+    }
+
+    public void setIndexSyncErrorMessage(String indexSyncErrorMessage) {
+        this.indexSyncErrorMessage = indexSyncErrorMessage;
+    }
+
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/mapper/DocumentChunkMapper.java

@@ -2,6 +2,12 @@ package tech.easyflow.ai.mapper;
 
 import tech.easyflow.ai.entity.DocumentChunk;
 import com.mybatisflex.core.BaseMapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
+
+import java.math.BigInteger;
+import java.util.List;
 
 /**
  *  映射层。
@@ -11,4 +17,23 @@ import com.mybatisflex.core.BaseMapper;
  */
 public interface DocumentChunkMapper extends BaseMapper<DocumentChunk> {
 
+    @Update("UPDATE tb_document_chunk SET index_sync_status=#{status}, "
+        + "index_sync_error_code=#{errorCode}, index_sync_error_message=#{errorMessage} "
+        + "WHERE id=#{id} AND index_sync_version=#{version}")
+    int updateSyncState(@Param("id") BigInteger id,
+                        @Param("version") long version,
+                        @Param("status") String status,
+                        @Param("errorCode") String errorCode,
+                        @Param("errorMessage") String errorMessage);
+
+    @Select("<script>SELECT id, document_id AS documentId, "
+        + "document_collection_id AS documentCollectionId, "
+        + "index_sync_status AS indexSyncStatus, index_sync_version AS indexSyncVersion, "
+        + "index_sync_error_code AS indexSyncErrorCode, "
+        + "index_sync_error_message AS indexSyncErrorMessage "
+        + "FROM tb_document_chunk WHERE document_id=#{documentId} AND id IN "
+        + "<foreach collection='ids' item='id' open='(' separator=',' close=')'>#{id}</foreach>"
+        + "</script>")
+    List<DocumentChunk> selectSyncStates(@Param("documentId") BigInteger documentId,
+                                         @Param("ids") List<BigInteger> ids);
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/mapper/DocumentChunkSyncTaskMapper.java

@@ -0,0 +1,115 @@
+package tech.easyflow.ai.mapper;
+
+import com.mybatisflex.core.BaseMapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
+import tech.easyflow.ai.entity.DocumentChunkSyncTask;
+
+import java.math.BigInteger;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * 文档分块索引同步任务映射层。
+ */
+public interface DocumentChunkSyncTaskMapper extends BaseMapper<DocumentChunkSyncTask> {
+
+    String SELECT_COLUMNS = "id, chunk_id AS chunkId, document_id AS documentId, "
+        + "document_collection_id AS documentCollectionId, "
+        + "vector_collection AS vectorCollection, operation, sync_version AS syncVersion, "
+        + "status, attempt_count AS attemptCount, next_retry_at AS nextRetryAt, "
+        + "last_dispatched_at AS lastDispatchedAt, execution_token AS executionToken, "
+        + "lease_until AS leaseUntil, error_code AS errorCode, error_message AS errorMessage, "
+        + "created, created_by AS createdBy, modified, modified_by AS modifiedBy";
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status='SUPERSEDED', "
+        + "execution_token=NULL, lease_until=NULL, modified=#{now} "
+        + "WHERE chunk_id=#{chunkId} AND sync_version < #{syncVersion} "
+        + "AND status IN ('PENDING','RUNNING','FAILED')")
+    int supersedeOlder(@Param("chunkId") BigInteger chunkId,
+                       @Param("syncVersion") long syncVersion,
+                       @Param("now") Date now);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status='SUPERSEDED', "
+        + "execution_token=NULL, lease_until=NULL, modified=#{now} "
+        + "WHERE chunk_id=#{chunkId} AND status IN ('PENDING','RUNNING','FAILED')")
+    int supersedeChunk(@Param("chunkId") BigInteger chunkId,
+                       @Param("now") Date now);
+
+    /**
+     * 锁定同一分块的任务版本范围，保证外部索引写入与新版本建单按版本串行。
+     */
+    @Select("SELECT id FROM tb_document_chunk_sync_task WHERE chunk_id=#{chunkId} "
+        + "ORDER BY sync_version, id FOR UPDATE")
+    List<BigInteger> lockChunkTasks(@Param("chunkId") BigInteger chunkId);
+
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_chunk_sync_task "
+        + "WHERE status='PENDING' AND next_retry_at <= #{now} "
+        + "AND (last_dispatched_at IS NULL OR last_dispatched_at <= #{redispatchBefore}) "
+        + "ORDER BY next_retry_at, id LIMIT #{limit}")
+    List<DocumentChunkSyncTask> selectPendingDue(@Param("now") Date now,
+                                                 @Param("redispatchBefore") Date redispatchBefore,
+                                                 @Param("limit") int limit);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET last_dispatched_at=#{now}, modified=#{now} "
+        + "WHERE id=#{id} AND status='PENDING' AND next_retry_at <= #{now} "
+        + "AND (last_dispatched_at IS NULL OR last_dispatched_at <= #{redispatchBefore})")
+    int markDispatched(@Param("id") BigInteger id,
+                       @Param("now") Date now,
+                       @Param("redispatchBefore") Date redispatchBefore);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status='PENDING', "
+        + "execution_token=NULL, lease_until=NULL, next_retry_at=#{now}, "
+        + "last_dispatched_at=NULL, modified=#{now} "
+        + "WHERE status='RUNNING' AND lease_until <= #{now}")
+    int recoverExpired(@Param("now") Date now);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status='RUNNING', "
+        + "attempt_count=attempt_count + 1, execution_token=#{token}, "
+        + "lease_until=#{leaseUntil}, error_code=NULL, error_message=NULL, modified=#{now} "
+        + "WHERE id=#{id} AND status='PENDING' AND next_retry_at <= #{now}")
+    int claim(@Param("id") BigInteger id,
+              @Param("token") String token,
+              @Param("leaseUntil") Date leaseUntil,
+              @Param("now") Date now);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status=#{status}, "
+        + "execution_token=NULL, lease_until=NULL, error_code=#{errorCode}, "
+        + "error_message=#{errorMessage}, modified=#{now} "
+        + "WHERE id=#{id} AND status='RUNNING' AND execution_token=#{token}")
+    int finishOwned(@Param("id") BigInteger id,
+                    @Param("token") String token,
+                    @Param("status") String status,
+                    @Param("errorCode") String errorCode,
+                    @Param("errorMessage") String errorMessage,
+                    @Param("now") Date now);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status=#{status}, "
+        + "execution_token=NULL, lease_until=NULL, next_retry_at=#{nextRetryAt}, "
+        + "last_dispatched_at=NULL, error_code=#{errorCode}, "
+        + "error_message=#{errorMessage}, modified=#{now} "
+        + "WHERE id=#{id} AND status='RUNNING' AND execution_token=#{token}")
+    int failOrRetryOwned(@Param("id") BigInteger id,
+                         @Param("token") String token,
+                         @Param("status") String status,
+                         @Param("nextRetryAt") Date nextRetryAt,
+                         @Param("errorCode") String errorCode,
+                         @Param("errorMessage") String errorMessage,
+                         @Param("now") Date now);
+
+    @Update("UPDATE tb_document_chunk_sync_task SET status='PENDING', "
+        + "attempt_count=0, next_retry_at=#{now}, last_dispatched_at=NULL, "
+        + "execution_token=NULL, lease_until=NULL, error_code=NULL, error_message=NULL, modified=#{now} "
+        + "WHERE id=#{id} AND chunk_id=#{chunkId} AND sync_version=#{syncVersion} "
+        + "AND status='FAILED'")
+    int retryFailed(@Param("id") BigInteger id,
+                    @Param("chunkId") BigInteger chunkId,
+                    @Param("syncVersion") long syncVersion,
+                    @Param("now") Date now);
+
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_chunk_sync_task WHERE chunk_id=#{chunkId} "
+        + "AND sync_version=#{syncVersion} AND status='FAILED' ORDER BY id DESC LIMIT 1")
+    DocumentChunkSyncTask selectFailed(@Param("chunkId") BigInteger chunkId,
+                                       @Param("syncVersion") long syncVersion);
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/mapper/DocumentImportBatchItemMapper.java

@@ -17,22 +17,49 @@ import java.util.Date;
  */
 public interface DocumentImportBatchItemMapper extends BaseMapper<DocumentImportBatchItem> {
 
+    String SELECT_COLUMNS = "id, batch_id AS batchId, knowledge_id AS knowledgeId, "
+        + "document_id AS documentId, replaced_document_id AS replacedDocumentId, "
+        + "client_file_key AS clientFileKey, file_name AS fileName, "
+        + "relative_path AS relativePath, file_size AS fileSize, "
+        + "file_path AS filePath, storage_locator AS storageLocator, "
+        + "cleanup_pending AS cleanupPending, content_sha256 AS contentSha256, "
+        + "stage, status, error_summary AS errorSummary, "
+        + "failure_code AS failureCode, applied_strategy_code AS appliedStrategyCode, "
+        + "strategy_snapshot_json AS strategySnapshotJson, retryable, "
+        + "attempt_count AS attemptCount, created, created_by AS createdBy, "
+        + "modified, modified_by AS modifiedBy";
+
     /**
-     * 锁定运行批次中的失败项并取得本轮恢复权。
+     * 锁定并读取批次文件项。
      *
-     * <p>同时锁定批次和文件项，使恢复任务创建与批次熔断串行化。</p>
+     * <p>调用方必须先锁定所属批次，再调用本方法，避免批次计数更新时
+     * 出现共享锁升级死锁。</p>
      *
      * @param itemId 文件项 ID
-     * @return 可恢复文件项；状态已变化时返回 null
+     * @return 文件项；不存在时返回 null
      */
-    @Select("SELECT item.* FROM tb_document_import_batch_item item "
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_batch_item "
-        + "INNER JOIN tb_document_import_batch batch ON batch.id=item.batch_id "
+        + "WHERE id=#{itemId} FOR UPDATE")
-        + "WHERE item.id=#{itemId} AND item.status='FAILED' "
+    DocumentImportBatchItem selectForUpdate(
-        + "AND batch.status='RUNNING' FOR UPDATE")
-    DocumentImportBatchItem selectFailedForRetry(
         @Param("itemId") BigInteger itemId
     );
 
+    /**
+     * 统计运行批次内已经由等价请求推进的活跃文件项。
+     *
+     * <p>调用方必须先锁定批次；所有文件项状态迁移遵循批次到文件项
+     * 的锁顺序，因此该当前状态检查到后续熔断之间不会新增活跃项。</p>
+     *
+     * @param batchId 批次 ID
+     * @return 活跃文件项数量
+     */
+    @Select("SELECT COUNT(*) FROM tb_document_import_batch_item "
+        + "WHERE batch_id=#{batchId} "
+        + "AND status IN ('PENDING','UPLOADING','RUNNING','UPLOADED')")
+    int countActiveItems(
+        @Param("batchId") BigInteger batchId
+    );
+
     /**
      * 将中断批次中尚未结束的文件项统一收口为可恢复失败。
      *
@@ -100,14 +127,13 @@ public interface DocumentImportBatchItemMapper extends BaseMapper<DocumentImport
      * @param modified 修改时间
      * @return 更新行数
      */
-    @Update("UPDATE tb_document_import_batch_item item "
+    @Update("UPDATE tb_document_import_batch_item SET "
-        + "INNER JOIN tb_document_import_batch batch ON batch.id=item.batch_id SET "
+        + "stage=#{stage}, status=#{status}, "
-        + "item.stage=#{stage}, item.status=#{status}, "
+        + "error_summary=#{errorSummary}, failure_code=#{failureCode}, "
-        + "item.error_summary=#{errorSummary}, item.failure_code=#{failureCode}, "
+        + "retryable=#{retryable}, "
-        + "item.retryable=#{retryable}, "
+        + "attempt_count=attempt_count + #{attemptDelta}, "
-        + "item.attempt_count=item.attempt_count + #{attemptDelta}, "
+        + "modified=#{modified} WHERE id=#{id} "
-        + "item.modified=#{modified} WHERE item.id=#{id} "
+        + "AND status=#{expectedStatus}")
-        + "AND item.status=#{expectedStatus} AND batch.status<>'INTERRUPTED'")
     int transitionStatus(
         @Param("id") BigInteger id,
         @Param("expectedStatus") String expectedStatus,
@@ -146,21 +172,46 @@ public interface DocumentImportBatchItemMapper extends BaseMapper<DocumentImport
      * @param modified 修改时间
      * @return 文件项仍属于运行批次且绑定成功时返回 1
      */
-    @Update("UPDATE tb_document_import_batch_item item "
+    @Update("UPDATE tb_document_import_batch_item SET "
-        + "INNER JOIN tb_document_import_batch batch ON batch.id=item.batch_id SET "
+        + "document_id=#{documentId}, stage='PARSE', "
-        + "item.document_id=#{documentId}, item.stage='PARSE', "
+        + "status='PENDING', error_summary=NULL, "
-        + "item.status='PENDING', item.error_summary=NULL, "
+        + "failure_code=NULL, retryable=0, "
-        + "item.failure_code=NULL, item.retryable=0, "
+        + "attempt_count=COALESCE(attempt_count, 0) + 1, "
-        + "item.attempt_count=COALESCE(item.attempt_count, 0) + 1, "
+        + "modified=#{modified} "
-        + "item.modified=#{modified} "
+        + "WHERE id=#{id} AND status='FAILED' "
-        + "WHERE item.id=#{id} AND item.status='FAILED' "
+        + "AND document_id IS NULL")
-        + "AND item.document_id IS NULL AND batch.status='RUNNING'")
     int bindFailedDocument(
         @Param("id") BigInteger id,
         @Param("documentId") BigInteger documentId,
         @Param("modified") Date modified
     );
 
+    /**
+     * 将引用已丢失文档的失败项绑定到恢复创建的新文档。
+     *
+     * @param id 文件项 ID
+     * @param missingDocumentId 已不存在的旧文档 ID
+     * @param documentId 恢复创建的新文档 ID
+     * @param modified 修改时间
+     * @return 文件项仍处于预期失败状态且旧文档确实不存在时返回 1
+     */
+    @Update("UPDATE tb_document_import_batch_item SET "
+        + "document_id=#{documentId}, stage='PARSE', "
+        + "status='PENDING', error_summary=NULL, "
+        + "failure_code=NULL, retryable=0, "
+        + "attempt_count=COALESCE(attempt_count, 0) + 1, "
+        + "modified=#{modified} "
+        + "WHERE id=#{id} AND status='FAILED' "
+        + "AND document_id=#{missingDocumentId} "
+        + "AND NOT EXISTS (SELECT 1 FROM tb_document "
+        + "WHERE id=#{missingDocumentId})")
+    int replaceMissingDocument(
+        @Param("id") BigInteger id,
+        @Param("missingDocumentId") BigInteger missingDocumentId,
+        @Param("documentId") BigInteger documentId,
+        @Param("modified") Date modified
+    );
+
     /**
      * 更新恢复失败项的业务错误，但不提前汇总批次终态。
      *
@@ -170,12 +221,11 @@ public interface DocumentImportBatchItemMapper extends BaseMapper<DocumentImport
      * @param modified 修改时间
      * @return 文件项仍属于运行批次且更新成功时返回 1
      */
-    @Update("UPDATE tb_document_import_batch_item item "
+    @Update("UPDATE tb_document_import_batch_item SET "
-        + "INNER JOIN tb_document_import_batch batch ON batch.id=item.batch_id SET "
+        + "error_summary=#{errorSummary}, failure_code=NULL, "
-        + "item.error_summary=#{errorSummary}, item.failure_code=NULL, "
+        + "retryable=1, modified=#{modified} "
-        + "item.retryable=1, item.modified=#{modified} "
+        + "WHERE id=#{id} AND batch_id=#{batchId} "
-        + "WHERE item.id=#{id} AND item.batch_id=#{batchId} "
+        + "AND status='FAILED'")
-        + "AND item.status='FAILED' AND batch.status='RUNNING'")
     int updateFailedRetryError(
         @Param("id") BigInteger id,
         @Param("batchId") BigInteger batchId,

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/mapper/DocumentImportBatchMapper.java

@@ -18,6 +18,38 @@ import java.util.List;
  */
 public interface DocumentImportBatchMapper extends BaseMapper<DocumentImportBatch> {
 
+    String SELECT_COLUMNS = "id, knowledge_id AS knowledgeId, "
+        + "caller_type AS callerType, caller_id AS callerId, "
+        + "idempotency_key_hash AS idempotencyKeyHash, "
+        + "request_digest AS requestDigest, duplicate_policy AS duplicatePolicy, "
+        + "requested_strategy_json AS requestedStrategyJson, "
+        + "retry_generation AS retryGeneration, version, "
+        + "import_mode AS importMode, status, total_count AS totalCount, "
+        + "total_bytes AS totalBytes, completed_count AS completedCount, "
+        + "processing_count AS processingCount, failed_count AS failedCount, "
+        + "pending_count AS pendingCount, uploaded_count AS uploadedCount, "
+        + "skipped_count AS skippedCount, cancelled_count AS cancelledCount, "
+        + "retryable_failed_count AS retryableFailedCount, "
+        + "interrupt_code AS interruptCode, interrupt_message AS interruptMessage, "
+        + "interrupted_at AS interruptedAt, recovery_pending AS recoveryPending, "
+        + "recovery_file_keys_json AS recoveryFileKeysJson, "
+        + "recovery_token AS recoveryToken, "
+        + "recovery_lease_until AS recoveryLeaseUntil, "
+        + "started_at AS startedAt, finished_at AS finishedAt, created, "
+        + "created_by AS createdBy, modified, modified_by AS modifiedBy";
+
+    /**
+     * 锁定并读取批次，统一批次计数与文件项状态更新的加锁顺序。
+     *
+     * @param batchId 批次 ID
+     * @return 批次；不存在时返回 null
+     */
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_batch "
+        + "WHERE id=#{batchId} FOR UPDATE")
+    DocumentImportBatch selectForUpdate(
+        @Param("batchId") BigInteger batchId
+    );
+
     /**
      * 锁定并读取调用者拥有的批次，保证后续重试基于最新状态。
      *
@@ -26,7 +58,7 @@ public interface DocumentImportBatchMapper extends BaseMapper<DocumentImportBatc
      * @param callerId 调用者 ID
      * @return 批次；不存在时返回 null
      */
-    @Select("SELECT * FROM tb_document_import_batch "
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_batch "
         + "WHERE id=#{batchId} AND caller_type=#{callerType} "
         + "AND caller_id=#{callerId} FOR UPDATE")
     DocumentImportBatch selectOwnedForUpdate(
@@ -195,7 +227,7 @@ public interface DocumentImportBatchMapper extends BaseMapper<DocumentImportBatc
      * @param limit 最大批次数
      * @return 待恢复批次
      */
-    @Select("SELECT * FROM tb_document_import_batch "
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_batch "
         + "WHERE status='RUNNING' AND recovery_pending=1 "
         + "AND (recovery_token IS NULL OR recovery_lease_until <= #{now}) "
         + "ORDER BY modified, id LIMIT #{limit}")
@@ -256,7 +288,7 @@ public interface DocumentImportBatchMapper extends BaseMapper<DocumentImportBatc
      * @param recoveryToken 恢复调度令牌
      * @return 当前令牌持有的批次；令牌失效时返回空
      */
-    @Select("SELECT * FROM tb_document_import_batch "
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_batch "
         + "WHERE id=#{batchId} AND status='RUNNING' "
         + "AND recovery_pending=1 AND recovery_token=#{recoveryToken}")
     DocumentImportBatch selectClaimedRecovery(
@@ -383,7 +415,7 @@ public interface DocumentImportBatchMapper extends BaseMapper<DocumentImportBatc
      * @param limit 最大返回数量
      * @return 待回收批次
      */
-    @Select("SELECT * FROM tb_document_import_batch "
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_batch "
         + "WHERE status IN ('UPLOADING','READY') "
         + "AND ((modified IS NOT NULL AND modified < #{incompleteCutoff}) "
         + "OR (modified IS NULL AND created < #{incompleteCutoff})) "

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/mapper/DocumentImportTaskMapper.java

@@ -18,6 +18,26 @@ import java.util.List;
  */
 public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask> {
 
+    String SELECT_COLUMNS = "id, document_id AS documentId, "
+        + "knowledge_id AS knowledgeId, batch_id AS batchId, "
+        + "batch_item_id AS batchItemId, phase, status, "
+        + "provider_task_id AS providerTaskId, payload_json AS payloadJson, "
+        + "error_summary AS errorSummary, failure_code AS failureCode, "
+        + "attempt_no AS attemptNo, execution_token AS executionToken, "
+        + "lease_until AS leaseUntil, version, started_at AS startedAt, "
+        + "finished_at AS finishedAt, created, created_by AS createdBy, "
+        + "modified, modified_by AS modifiedBy";
+
+    String QUALIFIED_SELECT_COLUMNS = "task.id, task.document_id AS documentId, "
+        + "task.knowledge_id AS knowledgeId, task.batch_id AS batchId, "
+        + "task.batch_item_id AS batchItemId, task.phase, task.status, "
+        + "task.provider_task_id AS providerTaskId, task.payload_json AS payloadJson, "
+        + "task.error_summary AS errorSummary, task.failure_code AS failureCode, "
+        + "task.attempt_no AS attemptNo, task.execution_token AS executionToken, "
+        + "task.lease_until AS leaseUntil, task.version, task.started_at AS startedAt, "
+        + "task.finished_at AS finishedAt, task.created, task.created_by AS createdBy, "
+        + "task.modified, task.modified_by AS modifiedBy";
+
     /**
      * 按任务阶段和批次轮转查询待投递任务，避免大批次独占投递窗口。
      *
@@ -25,14 +45,16 @@ public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask>
      * @param limit 最大任务数
      * @return 公平排序后的待投递任务
      */
-    @Select("SELECT task.* FROM tb_document_import_task task JOIN ("
+    @Select("SELECT " + QUALIFIED_SELECT_COLUMNS
+        + " FROM tb_document_import_task task JOIN ("
         + "SELECT task.id, ROW_NUMBER() OVER ("
         + "PARTITION BY task.phase, COALESCE(task.batch_id, task.id) "
         + "ORDER BY task.created, task.id) AS lane_row "
         + "FROM tb_document_import_task task "
         + "LEFT JOIN tb_document_import_batch batch ON batch.id=task.batch_id "
         + "WHERE task.status='PENDING' AND task.modified <= #{redispatchBefore} "
-        + "AND (task.batch_id IS NULL OR batch.status='RUNNING')"
+        + "AND (task.batch_id IS NULL OR batch.import_mode='MANUAL' "
+        + "OR batch.status='RUNNING')"
         + ") ranked ON ranked.id=task.id "
         + "ORDER BY ranked.lane_row, task.created, task.id LIMIT #{limit}")
     List<DocumentImportTask> selectPendingFairly(
@@ -52,11 +74,7 @@ public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask>
     @Update("UPDATE tb_document_import_task SET modified=#{now}, "
         + "modified_by=#{operatorId}, version=COALESCE(version, 0) + 1 "
         + "WHERE id=#{id} AND status='PENDING' "
-        + "AND modified <= #{redispatchBefore} "
+        + "AND modified <= #{redispatchBefore}")
-        + "AND (batch_id IS NULL OR EXISTS ("
-        + "SELECT 1 FROM tb_document_import_batch batch "
-        + "WHERE batch.id=tb_document_import_task.batch_id "
-        + "AND batch.status='RUNNING'))")
     int touchPendingForDispatch(
         @Param("id") BigInteger id,
         @Param("redispatchBefore") Date redispatchBefore,
@@ -72,7 +90,7 @@ public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask>
      * @param limit 最大任务数
      * @return 已失去执行租约的运行任务
      */
-    @Select("SELECT * FROM tb_document_import_task "
+    @Select("SELECT " + SELECT_COLUMNS + " FROM tb_document_import_task "
         + "WHERE status='RUNNING' AND ("
         + "(lease_until IS NOT NULL AND lease_until <= #{now}) OR "
         + "(lease_until IS NULL AND modified <= #{legacyCutoff})) "
@@ -99,11 +117,7 @@ public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask>
         + "started_at=COALESCE(started_at, #{now}), finished_at=NULL, "
         + "error_summary=NULL, failure_code=NULL, modified=#{now}, "
         + "modified_by=#{operatorId}, version=COALESCE(version, 0) + 1 "
-        + "WHERE id=#{id} AND status='PENDING' "
+        + "WHERE id=#{id} AND status='PENDING'")
-        + "AND (batch_id IS NULL OR EXISTS ("
-        + "SELECT 1 FROM tb_document_import_batch batch "
-        + "WHERE batch.id=tb_document_import_task.batch_id "
-        + "AND batch.status='RUNNING'))")
     int claimPending(
         @Param("id") BigInteger id,
         @Param("executionToken") String executionToken,
@@ -126,11 +140,7 @@ public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask>
         + "modified=#{now}, modified_by=#{operatorId}, "
         + "version=COALESCE(version, 0) + 1 "
         + "WHERE id=#{id} AND status='RUNNING' "
-        + "AND execution_token=#{executionToken} "
+        + "AND execution_token=#{executionToken}")
-        + "AND (batch_id IS NULL OR EXISTS ("
-        + "SELECT 1 FROM tb_document_import_batch batch "
-        + "WHERE batch.id=tb_document_import_task.batch_id "
-        + "AND batch.status='RUNNING'))")
     int renewLease(
         @Param("id") BigInteger id,
         @Param("executionToken") String executionToken,
@@ -156,11 +166,7 @@ public interface DocumentImportTaskMapper extends BaseMapper<DocumentImportTask>
         + "lease_until=NULL, finished_at=#{now}, modified=#{now}, "
         + "modified_by=#{operatorId}, version=COALESCE(version, 0) + 1 "
         + "WHERE id=#{id} AND status='RUNNING' "
-        + "AND execution_token=#{executionToken} "
+        + "AND execution_token=#{executionToken}")
-        + "AND (batch_id IS NULL OR EXISTS ("
-        + "SELECT 1 FROM tb_document_import_batch batch "
-        + "WHERE batch.id=tb_document_import_task.batch_id "
-        + "AND batch.status='RUNNING'))")
     int finishOwned(
         @Param("id") BigInteger id,
         @Param("executionToken") String executionToken,

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/node/DefaultReadService.java

@@ -26,10 +26,6 @@ public class DefaultReadService implements ReadDocService {
     @Override
     public String read(String fileName, InputStream is) {
         String suffix = DocUtil.getSuffix(fileName);
-        if ("pdf".equals(suffix)) {
+        return DocUtil.readPreviewContent(suffix, is);
-            return DocUtil.readPdfFile(is);
-        } else {
-            return DocUtil.readWordFile(suffix, is);
-        }
     }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/node/DocNodeFileContentExtractor.java

@@ -12,6 +12,7 @@ import tech.easyflow.ai.document.model.DocumentSourceRef;
 import tech.easyflow.ai.document.exception.DocumentParseBridgeException;
 import tech.easyflow.ai.document.service.DocumentParseBridgeService;
 import tech.easyflow.ai.document.support.DocumentInputStreamSupport;
+import tech.easyflow.ai.document.support.DocumentParseFilePolicy;
 import tech.easyflow.ai.document.support.DocumentParseSourceType;
 import tech.easyflow.ai.easyagentsflow.upload.WorkflowApiUploadedFileReader;
 import tech.easyflow.common.filestorage.FileStorageService;
@@ -206,6 +207,16 @@ public class DocNodeFileContentExtractor {
         if (!StringUtil.hasText(sourceRef.getFilePath())) {
             throw new BusinessException("文件输入缺少 filePath");
         }
+        if (!DocumentParseFilePolicy.isSupportedFileName(
+                sourceRef.getFileName())) {
+            throw new BusinessException(
+                "文件“"
+                    + sourceRef.getFileName()
+                    + "”格式不支持，文档解析仅支持 "
+                    + DocumentParseFilePolicy.supportedTypeLabel()
+                    + " 文件"
+            );
+        }
     }
 
     private void collectFileValues(Object value, List<Object> result) {
@@ -285,8 +296,12 @@ public class DocNodeFileContentExtractor {
                                  "document:default-reader");
                  InputStream inputStream =
                          Files.newInputStream(temporaryFile)) {
-                return readerManager.getReader().read(
+                String content = readerManager.getReader().read(
                         sourceRef.getFileName(), inputStream);
+                if (!StringUtil.hasText(content)) {
+                    throw new BusinessException("文档解析结果为空");
+                }
+                return content;
             }
         } catch (IOException e) {
             DocumentInputStreamSupport.SizeLimitExceededException sizeError =

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/publish/AbstractAiResourceLifecycleHandler.java

@@ -157,6 +157,15 @@ public abstract class AbstractAiResourceLifecycleHandler<T> implements ApprovalS
     protected void enrichOfflineSnapshot(T resource, Map<String, Object> snapshot) {
     }
 
+    /**
+     * 在发布快照参与重复发布比较前补充资源专属契约。
+     *
+     * @param resource 资源
+     * @param snapshot 当前发布快照
+     */
+    protected void enrichPublishSnapshot(T resource, Map<String, Object> snapshot) {
+    }
+
     /**
      * 删除前额外校验。
      *
@@ -287,6 +296,7 @@ public abstract class AbstractAiResourceLifecycleHandler<T> implements ApprovalS
             throw new BusinessException("当前" + resourceLabel() + "状态不允许发布");
         }
         Map<String, Object> snapshot = buildResourceSnapshot(resource);
+        enrichPublishSnapshot(resource, snapshot);
         if (currentStatus == PublishStatus.PUBLISHED && isSameSnapshot(snapshot, getPublishedSnapshot(resource))) {
             throw new BusinessException("当前内容与已发布版本一致，无需重新发布");
         }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/publish/AiResourceLifecycleHandler.java

@@ -64,6 +64,30 @@ public interface AiResourceLifecycleHandler {
         applyApprovedAction(actionType, resourceId, resourceSnapshot, operatorId);
     }
 
+    /**
+     * 执行带审批申请人身份的通过回调。
+     *
+     * @param actionType 动作类型
+     * @param resourceId 资源 ID
+     * @param resourceSnapshot 审批冻结快照
+     * @param operatorId 审批操作人 ID
+     * @param approvalInstanceId 审批实例 ID
+     * @param applicantId 审批申请人 ID
+     */
+    default void applyApprovedAction(String actionType,
+                                     BigInteger resourceId,
+                                     Map<String, Object> resourceSnapshot,
+                                     BigInteger operatorId,
+                                     BigInteger approvalInstanceId,
+                                     BigInteger applicantId) {
+        applyApprovedAction(
+                actionType,
+                resourceId,
+                resourceSnapshot,
+                operatorId,
+                approvalInstanceId);
+    }
+
     /**
      * 在实际提交或直接执行前持有冻结快照所需资源。
      *

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/publish/AiResourceLifecycleServiceImpl.java

@@ -110,7 +110,8 @@ public class AiResourceLifecycleServiceImpl implements AiResourceLifecycleServic
                 instance.getResourceId(),
                 readResourceSnapshot(instance.getSnapshotJson()),
                 operatorId,
-                instance.getId()
+                instance.getId(),
+                instance.getApplicantId()
         );
     }
 

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/publish/WorkflowApprovalSubjectHandler.java

@@ -3,6 +3,9 @@ package tech.easyflow.ai.publish;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.springframework.stereotype.Component;
 import tech.easyflow.ai.entity.Workflow;
+import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
+import tech.easyflow.ai.easyagentsflow.knowledge.WorkflowKnowledgeContractService;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
 import tech.easyflow.ai.enums.PublishStatus;
 import tech.easyflow.ai.plugin.workflow.binding.WorkflowPluginBindingService;
 import tech.easyflow.ai.plugin.workflow.snapshot.WorkflowPluginSnapshotResolver;
@@ -13,16 +16,22 @@ import tech.easyflow.ai.service.WorkflowScheduleReferenceProvider;
 import tech.easyflow.ai.vo.OfflineImpactCheckVo;
 import tech.easyflow.ai.vo.OfflineImpactBindingVo;
 import tech.easyflow.approval.service.ApprovalInstanceService;
+import tech.easyflow.approval.enums.ApprovalActionType;
 import tech.easyflow.approval.enums.ApprovalResourceType;
+import tech.easyflow.common.constant.enums.EnumDataStatus;
+import tech.easyflow.common.entity.LoginAccount;
 import tech.easyflow.common.web.exceptions.BusinessException;
+import tech.easyflow.system.entity.SysAccount;
 import tech.easyflow.system.enums.CategoryResourceType;
 import tech.easyflow.system.enums.ResourceAction;
 import tech.easyflow.system.service.ResourceAccessService;
+import tech.easyflow.system.service.SysAccountService;
 
 import java.math.BigInteger;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 /**
  * 工作流生命周期处理器。
@@ -37,6 +46,9 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
     private final WorkflowPluginSnapshotResolver workflowPluginSnapshotResolver;
     private final AgentResourceReferenceService agentResourceReferenceService;
     private final List<WorkflowScheduleReferenceProvider> workflowScheduleReferenceProviders;
+    private final WorkflowCheckService workflowCheckService;
+    private final WorkflowKnowledgeContractService workflowKnowledgeContractService;
+    private final SysAccountService sysAccountService;
 
     public WorkflowApprovalSubjectHandler(WorkflowService workflowService,
                                           ResourceAccessService resourceAccessService,
@@ -46,7 +58,10 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
                                           WorkflowPluginSnapshotResolver workflowPluginSnapshotResolver,
                                           AgentResourceReferenceService agentResourceReferenceService,
                                           ObjectMapper objectMapper,
-                                          List<WorkflowScheduleReferenceProvider> workflowScheduleReferenceProviders) {
+                                          List<WorkflowScheduleReferenceProvider> workflowScheduleReferenceProviders,
+                                          WorkflowCheckService workflowCheckService,
+                                          WorkflowKnowledgeContractService workflowKnowledgeContractService,
+                                          SysAccountService sysAccountService) {
         super(approvalInstanceService, objectMapper);
         this.workflowService = workflowService;
         this.resourceAccessService = resourceAccessService;
@@ -57,6 +72,9 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
         this.workflowScheduleReferenceProviders = workflowScheduleReferenceProviders == null
                 ? List.of()
                 : List.copyOf(workflowScheduleReferenceProviders);
+        this.workflowCheckService = workflowCheckService;
+        this.workflowKnowledgeContractService = workflowKnowledgeContractService;
+        this.sysAccountService = sysAccountService;
     }
 
     @Override
@@ -132,6 +150,12 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
 
     @Override
     protected Map<String, Object> buildPublishSnapshot(Workflow resource, PublishStatus currentStatus) {
+        workflowCheckService.checkOrThrow(
+                resource.getContent(),
+                WorkflowCheckStage.SAVE,
+                resource.getId());
+        assertKnowledgeUseAccess(
+                resource.getContent(), resource.getTenantId(), null);
         Map<String, Object> snapshot = super.buildPublishSnapshot(resource, currentStatus);
         OfflineImpactCheckVo impact = resourceOfflineImpactService.checkWorkflowImpact(resource.getId());
         if (impact.isHasPluginBindings()) {
@@ -140,6 +164,53 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
         return snapshot;
     }
 
+    @Override
+    protected void enrichPublishSnapshot(
+            Workflow resource,
+            Map<String, Object> snapshot) {
+        snapshot.put(
+                WorkflowKnowledgeContractService.SNAPSHOT_KEY,
+                workflowKnowledgeContractService.buildSnapshotContracts(
+                        resource.getContent(), resource.getTenantId()));
+    }
+
+    @Override
+    public void applyApprovedAction(
+            String actionType,
+            BigInteger resourceId,
+            Map<String, Object> resourceSnapshot,
+            BigInteger operatorId) {
+        if (ApprovalActionType.PUBLISH == ApprovalActionType.from(actionType)) {
+            assertKnowledgeUseAccess(
+                    String.valueOf(resourceSnapshot.get("content")),
+                    snapshotTenantId(resourceSnapshot),
+                    null);
+        }
+        super.applyApprovedAction(
+                actionType, resourceId, resourceSnapshot, operatorId);
+    }
+
+    @Override
+    public void applyApprovedAction(
+            String actionType,
+            BigInteger resourceId,
+            Map<String, Object> resourceSnapshot,
+            BigInteger operatorId,
+            BigInteger approvalInstanceId,
+            BigInteger applicantId) {
+        if (ApprovalActionType.PUBLISH == ApprovalActionType.from(actionType)) {
+            BigInteger tenantId = snapshotTenantId(resourceSnapshot);
+            LoginAccount applicant = requireCurrentApplicant(
+                    applicantId, tenantId);
+            assertKnowledgeUseAccess(
+                    String.valueOf(resourceSnapshot.get("content")),
+                    tenantId,
+                    applicant);
+        }
+        super.applyApprovedAction(
+                actionType, resourceId, resourceSnapshot, operatorId);
+    }
+
     @Override
     protected void persistResourceState(BigInteger resourceId, PublishStatus publishStatus, BigInteger currentApprovalInstanceId) {
         Workflow update = new Workflow();
@@ -151,6 +222,7 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
 
     @Override
     protected void publishResource(BigInteger resourceId, Map<String, Object> resourceSnapshot, BigInteger operatorId) {
+        workflowKnowledgeContractService.assertSnapshotCurrent(resourceSnapshot);
         Workflow update = new Workflow();
         update.setId(resourceId);
         update.setPublishStatus(PublishStatus.PUBLISHED.getCode());
@@ -162,6 +234,62 @@ public class WorkflowApprovalSubjectHandler extends AbstractAiResourceLifecycleH
         workflowPluginBindingService.syncByWorkflowId(resourceId);
     }
 
+    private void assertKnowledgeUseAccess(
+            String content,
+            BigInteger tenantId,
+            LoginAccount account) {
+        workflowKnowledgeContractService.resolveReferencedCollections(
+                        content, tenantId)
+                .forEach(collection -> {
+                    if (account == null) {
+                        resourceAccessService.assertAccess(
+                                CategoryResourceType.KNOWLEDGE,
+                                collection,
+                                ResourceAction.USE,
+                                "无权限使用工作流知识库");
+                        return;
+                    }
+                    if (!resourceAccessService.canAccess(
+                            account,
+                            CategoryResourceType.KNOWLEDGE,
+                            collection,
+                            ResourceAction.USE)) {
+                        throw new BusinessException(
+                                403, 403, "无权限使用工作流知识库");
+                    }
+                });
+    }
+
+    private BigInteger snapshotTenantId(Map<String, Object> resourceSnapshot) {
+        Object value = resourceSnapshot == null
+                ? null
+                : resourceSnapshot.get("tenantId");
+        try {
+            BigInteger tenantId = new BigInteger(String.valueOf(value));
+            if (tenantId.signum() <= 0) {
+                throw new NumberFormatException("non-positive");
+            }
+            return tenantId;
+        } catch (RuntimeException exception) {
+            throw new BusinessException("工作流发布快照租户无效");
+        }
+    }
+
+    private LoginAccount requireCurrentApplicant(
+            BigInteger applicantId,
+            BigInteger tenantId) {
+        SysAccount account = applicantId == null
+                ? null
+                : sysAccountService.getById(applicantId);
+        if (account == null
+                || !EnumDataStatus.AVAILABLE.getCode().equals(account.getStatus())
+                || !Objects.equals(tenantId, account.getTenantId())) {
+            throw new BusinessException(
+                    403, 403, "审批申请人账号已失效或不属于当前租户");
+        }
+        return account.toLoginAccount();
+    }
+
     @Override
     protected void markResourceOffline(BigInteger resourceId) {
         Workflow update = new Workflow();

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/rag/KnowledgeVectorCandidateRequest.java

@@ -0,0 +1,93 @@
+package tech.easyflow.ai.rag;
+
+import tech.easyflow.ai.entity.DocumentCollection;
+
+import java.math.BigInteger;
+
+/**
+ * 单知识库原始向量候选请求，仅供内部跨库编排使用。
+ */
+public class KnowledgeVectorCandidateRequest {
+
+    private BigInteger knowledgeId;
+    private DocumentCollection collection;
+    private String query;
+    private int limit;
+    private double minVectorScore;
+    private float[] queryVector;
+    private Long timeoutMillis;
+    private String callerType;
+    private String callerId;
+
+    public BigInteger getKnowledgeId() {
+        return knowledgeId;
+    }
+
+    public void setKnowledgeId(BigInteger knowledgeId) {
+        this.knowledgeId = knowledgeId;
+    }
+
+    public DocumentCollection getCollection() {
+        return collection;
+    }
+
+    public void setCollection(DocumentCollection collection) {
+        this.collection = collection;
+    }
+
+    public String getQuery() {
+        return query;
+    }
+
+    public void setQuery(String query) {
+        this.query = query;
+    }
+
+    public int getLimit() {
+        return limit;
+    }
+
+    public void setLimit(int limit) {
+        this.limit = limit;
+    }
+
+    public double getMinVectorScore() {
+        return minVectorScore;
+    }
+
+    public void setMinVectorScore(double minVectorScore) {
+        this.minVectorScore = minVectorScore;
+    }
+
+    public float[] getQueryVector() {
+        return queryVector;
+    }
+
+    public void setQueryVector(float[] queryVector) {
+        this.queryVector = queryVector;
+    }
+
+    public Long getTimeoutMillis() {
+        return timeoutMillis;
+    }
+
+    public void setTimeoutMillis(Long timeoutMillis) {
+        this.timeoutMillis = timeoutMillis;
+    }
+
+    public String getCallerType() {
+        return callerType;
+    }
+
+    public void setCallerType(String callerType) {
+        this.callerType = callerType;
+    }
+
+    public String getCallerId() {
+        return callerId;
+    }
+
+    public void setCallerId(String callerId) {
+        this.callerId = callerId;
+    }
+}

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/DocumentChunkService.java

@@ -1,10 +1,12 @@
 package tech.easyflow.ai.service;
 
-import tech.easyflow.ai.entity.DocumentChunk;
 import com.mybatisflex.core.service.IService;
-import tech.easyflow.ai.entity.DocumentCollection;
+import tech.easyflow.ai.dto.DocumentChunkDeleteResult;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatus;
+import tech.easyflow.ai.entity.DocumentChunk;
 
 import java.math.BigInteger;
+import java.util.List;
 
 /**
  *  服务层。
@@ -14,5 +16,36 @@ import java.math.BigInteger;
  */
 public interface DocumentChunkService extends IService<DocumentChunk> {
 
-    boolean removeChunk(DocumentCollection knowledge, BigInteger chunkId);
+    /**
+     * 更新分块的 Markdown 正文，并创建后台检索索引同步任务。
+     *
+     * @param knowledgeId 知识库 ID
+     * @param chunkId 分块 ID
+     * @param markdown Markdown 正文
+     * @return 更新后的分块
+     */
+    DocumentChunk updateContent(BigInteger knowledgeId, BigInteger chunkId, String markdown);
+
+    /**
+     * 删除分块，并创建后台检索索引清理任务。
+     *
+     * @param knowledgeId 知识库 ID
+     * @param chunkId 分块 ID
+     * @return 删除结果
+     */
+    DocumentChunkDeleteResult deleteChunk(BigInteger knowledgeId, BigInteger chunkId);
+
+    /**
+     * 手动重试当前版本的检索索引同步。
+     */
+    DocumentChunk retryIndexSync(BigInteger knowledgeId, BigInteger chunkId, long syncVersion);
+
+    /**
+     * 批量读取文档内分块的索引同步状态。
+     */
+    List<DocumentChunkSyncStatus> listIndexSyncStatus(
+        BigInteger knowledgeId,
+        BigInteger documentId,
+        List<BigInteger> chunkIds
+    );
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/DocumentCollectionService.java

@@ -3,6 +3,7 @@ package tech.easyflow.ai.service;
 import com.easyagents.core.document.Document;
 import tech.easyflow.ai.entity.DocumentCollection;
 import tech.easyflow.ai.rag.KnowledgeRetrievalRequest;
+import tech.easyflow.ai.rag.KnowledgeVectorCandidateRequest;
 import com.mybatisflex.core.service.IService;
 
 import java.math.BigInteger;
@@ -20,6 +21,14 @@ public interface DocumentCollectionService extends IService<DocumentCollection>
 
     List<Document> search(KnowledgeRetrievalRequest request);
 
+    /**
+     * 查询未归一化、未取整、未重排的原始向量候选。
+     *
+     * @param request 原始向量候选请求
+     * @return 保留向量存储分数原始精度的候选
+     */
+    List<Document> searchVectorCandidates(KnowledgeVectorCandidateRequest request);
+
     DocumentCollection getDetail(String idOrAlias);
 
     DocumentCollection getByAlias(String idOrAlias);

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/ModelService.java

@@ -5,6 +5,7 @@ import tech.easyflow.ai.entity.Model;
 import tech.easyflow.ai.service.capability.ModelCapabilityResolution;
 
 import java.math.BigInteger;
+import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 
@@ -35,6 +36,14 @@ public interface ModelService extends IService<Model> {
 
     Model getModelInstance(BigInteger modelId);
 
+    /**
+     * 批量读取已关联供应商并补齐供应商默认配置的模型。
+     *
+     * @param modelIds 模型 ID
+     * @return 实际运行配置模型
+     */
+    List<Model> listModelInstances(Collection<BigInteger> modelIds);
+
     Model getModelInstanceByInvokeCode(String invokeCode);
 
     void validateForSaveOrUpdate(Model entity, boolean isSave);

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/impl/DocumentChunkServiceImpl.java

@@ -1,36 +1,365 @@
 package tech.easyflow.ai.service.impl;
 
-import com.easyagents.search.engine.service.DocumentSearcher;
+import com.easyagents.rag.core.BgeM3ChunkSafety;
-import org.springframework.beans.factory.annotation.Autowired;
+import com.easyagents.rag.core.RagDefaults;
-import tech.easyflow.ai.config.SearcherFactory;
+import com.mybatisflex.core.query.QueryWrapper;
-import tech.easyflow.ai.entity.DocumentChunk;
-import tech.easyflow.ai.entity.DocumentCollection;
-import tech.easyflow.ai.mapper.DocumentChunkMapper;
-import tech.easyflow.ai.service.DocumentChunkService;
 import com.mybatisflex.spring.service.impl.ServiceImpl;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.support.TransactionTemplate;
+import tech.easyflow.ai.documentchunk.DocumentChunkSyncState;
+import tech.easyflow.ai.documentchunk.DocumentChunkSyncTaskAppService;
+import tech.easyflow.ai.documentimport.DocumentImportKeys;
+import tech.easyflow.ai.dto.DocumentChunkDeleteResult;
+import tech.easyflow.ai.dto.DocumentChunkSyncStatus;
+import tech.easyflow.ai.entity.Document;
+import tech.easyflow.ai.entity.DocumentChunk;
+import tech.easyflow.ai.entity.DocumentChunkSyncTask;
+import tech.easyflow.ai.entity.DocumentCollection;
+import tech.easyflow.ai.mapper.DocumentChunkMapper;
+import tech.easyflow.ai.mapper.DocumentMapper;
+import tech.easyflow.ai.service.DocumentChunkService;
+import tech.easyflow.ai.service.DocumentCollectionService;
+import tech.easyflow.common.cache.RedisLockExecutor;
+import tech.easyflow.common.web.exceptions.BusinessException;
 
 import java.math.BigInteger;
+import java.time.Duration;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Collections;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.function.Supplier;
 
 /**
- *  服务层实现。
+ * 分块服务层实现。
- *
- * @author michael
- * @since 2024-08-23
  */
 @Service
-public class DocumentChunkServiceImpl extends ServiceImpl<DocumentChunkMapper, DocumentChunk> implements DocumentChunkService {
+public class DocumentChunkServiceImpl
+    extends ServiceImpl<DocumentChunkMapper, DocumentChunk>
+    implements DocumentChunkService {
 
-    @Autowired
+    public static final int DOCUMENT_CHUNK_EMPTY_REQUIRES_DELETE = 42901;
-    private SearcherFactory searcherFactory;
+    public static final int DOCUMENT_CHUNK_LOCK_UNAVAILABLE = 42905;
+
+    private static final Duration LOCK_WAIT_TIMEOUT = Duration.ofSeconds(5);
+    private static final Duration LOCK_LEASE_TIMEOUT = Duration.ofSeconds(30);
+    private static final Pattern MARKDOWN_IMAGE_PATTERN = Pattern.compile(
+        "!\\[([^\\]]*)\\]\\((?:[^()\\r\\n]|\\([^()\\r\\n]*\\))*\\)"
+    );
+    private static final Pattern HTML_IMAGE_PATTERN = Pattern.compile(
+        "<img\\b[^>]*>",
+        Pattern.CASE_INSENSITIVE
+    );
+    private static final Pattern HTML_ALT_PATTERN = Pattern.compile(
+        "\\balt\\s*=\\s*(?:\"([^\"]*)\"|'([^']*)')",
+        Pattern.CASE_INSENSITIVE
+    );
+
+    private final DocumentChunkMapper documentChunkMapper;
+    private final DocumentMapper documentMapper;
+    private final DocumentCollectionService documentCollectionService;
+    private final DocumentChunkSyncTaskAppService syncTaskAppService;
+    private final TransactionTemplate transactionTemplate;
+    private final RedisLockExecutor redisLockExecutor;
+
+    public DocumentChunkServiceImpl(
+        DocumentChunkMapper documentChunkMapper,
+        DocumentMapper documentMapper,
+        DocumentCollectionService documentCollectionService,
+        DocumentChunkSyncTaskAppService syncTaskAppService,
+        PlatformTransactionManager transactionManager,
+        RedisLockExecutor redisLockExecutor
+    ) {
+        this.documentChunkMapper = documentChunkMapper;
+        this.documentMapper = documentMapper;
+        this.documentCollectionService = documentCollectionService;
+        this.syncTaskAppService = syncTaskAppService;
+        this.transactionTemplate = new TransactionTemplate(transactionManager);
+        this.redisLockExecutor = redisLockExecutor;
+    }
 
     @Override
-    public boolean removeChunk(DocumentCollection knowledge, BigInteger chunkId) {
+    public DocumentChunk updateContent(
-        DocumentSearcher searcher = searcherFactory.getSearcher();
+        BigInteger knowledgeId,
-        // 删除搜索引擎中的数据
+        BigInteger chunkId,
-        if (searcher == null){
+        String markdown
-            return true;
+    ) {
+        if (markdown == null || markdown.trim().isEmpty()) {
+            throw new BusinessException(
+                422,
+                DOCUMENT_CHUNK_EMPTY_REQUIRES_DELETE,
+                "分块内容为空，请删除该分块"
+            );
         }
-        return  searcher.deleteDocument(chunkId);
+        DocumentChunk snapshot = requireChunk(knowledgeId, chunkId);
+        UpdateOutcome outcome = withDocumentLock(
+            snapshot.getDocumentId(),
+            () -> updateContentLocked(knowledgeId, chunkId, markdown)
+        );
+        syncTaskAppService.dispatchBestEffort(outcome.taskId());
+        return outcome.chunk();
+    }
+
+    private UpdateOutcome updateContentLocked(
+        BigInteger knowledgeId,
+        BigInteger chunkId,
+        String markdown
+    ) {
+        DocumentChunk current = requireChunk(knowledgeId, chunkId);
+        DocumentCollection collection = requireKnowledge(knowledgeId);
+        String searchableContent = toSearchableContent(markdown);
+        assertWithinEmbeddingLimit(chunkId, searchableContent);
+        Map<String, Object> options = current.getOptions() == null
+            ? new HashMap<>()
+            : new HashMap<>(current.getOptions());
+        options.put(DocumentImportKeys.KEY_DOCUMENT_RENDER_MARKDOWN, markdown);
+        long nextVersion = current.getIndexSyncVersion() == null
+            ? 1L
+            : current.getIndexSyncVersion() + 1L;
+
+        UpdateOutcome outcome = transactionTemplate.execute(status -> {
+            DocumentChunkSyncTask task = syncTaskAppService.createTask(
+                current,
+                collection,
+                DocumentChunkSyncState.OPERATION_UPSERT,
+                nextVersion,
+                new Date()
+            );
+            DocumentChunk update = new DocumentChunk();
+            update.setId(chunkId);
+            update.setContent(searchableContent);
+            update.setOptions(options);
+            update.setIndexSyncStatus(DocumentChunkSyncState.PENDING);
+            update.setIndexSyncVersion(nextVersion);
+            update.setIndexSyncErrorCode(null);
+            update.setIndexSyncErrorMessage(null);
+            if (documentChunkMapper.update(update) <= 0) {
+                throw new BusinessException("分块更新失败");
+            }
+            touchDocument(current.getDocumentId(), null);
+            current.setContent(searchableContent);
+            current.setOptions(options);
+            current.setIndexSyncStatus(DocumentChunkSyncState.PENDING);
+            current.setIndexSyncVersion(nextVersion);
+            current.setIndexSyncErrorCode(null);
+            current.setIndexSyncErrorMessage(null);
+            return new UpdateOutcome(current, task.getId());
+        });
+        if (outcome == null) {
+            throw new BusinessException("分块更新失败");
+        }
+        return outcome;
+    }
+
+    @Override
+    public DocumentChunkDeleteResult deleteChunk(BigInteger knowledgeId, BigInteger chunkId) {
+        DocumentChunk snapshot = requireChunk(knowledgeId, chunkId);
+        DeleteOutcome outcome = withDocumentLock(
+            snapshot.getDocumentId(),
+            () -> deleteChunkLocked(knowledgeId, chunkId)
+        );
+        syncTaskAppService.dispatchBestEffort(outcome.taskId());
+        return outcome.result();
+    }
+
+    private <T> T withDocumentLock(BigInteger documentId, Supplier<T> action) {
+        RedisLockExecutor.LockHandle handle;
+        try {
+            handle = redisLockExecutor.tryAcquire(
+                DocumentChunkSyncState.parentLockKey(documentId),
+                LOCK_WAIT_TIMEOUT,
+                LOCK_LEASE_TIMEOUT
+            );
+        } catch (RuntimeException exception) {
+            throw new BusinessException(
+                503,
+                DOCUMENT_CHUNK_LOCK_UNAVAILABLE,
+                "分块正在处理中，请稍后重试",
+                exception
+            );
+        }
+        if (handle == null) {
+            throw new BusinessException(
+                503,
+                DOCUMENT_CHUNK_LOCK_UNAVAILABLE,
+                "分块正在处理中，请稍后重试"
+            );
+        }
+        try (handle) {
+            return action.get();
+        }
+    }
+
+    private DeleteOutcome deleteChunkLocked(BigInteger knowledgeId, BigInteger chunkId) {
+        DocumentChunk current = requireChunk(knowledgeId, chunkId);
+        DocumentCollection collection = requireKnowledge(knowledgeId);
+        long nextVersion = current.getIndexSyncVersion() == null
+            ? 1L
+            : current.getIndexSyncVersion() + 1L;
+        DeleteOutcome outcome = transactionTemplate.execute(status -> {
+            DocumentChunkSyncTask task = syncTaskAppService.createTask(
+                current,
+                collection,
+                DocumentChunkSyncState.OPERATION_DELETE,
+                nextVersion,
+                new Date()
+            );
+            if (documentChunkMapper.deleteById(chunkId) <= 0) {
+                throw new BusinessException("分块删除失败");
+            }
+            long remaining = documentChunkMapper.selectCountByQuery(
+                QueryWrapper.create().eq(DocumentChunk::getDocumentId, current.getDocumentId())
+            );
+            touchDocument(current.getDocumentId(), remaining);
+            return new DeleteOutcome(
+                new DocumentChunkDeleteResult(chunkId, current.getDocumentId(), remaining),
+                task.getId()
+            );
+        });
+        if (outcome == null) {
+            throw new BusinessException("分块删除失败");
+        }
+        return outcome;
+    }
+
+    @Override
+    public DocumentChunk retryIndexSync(
+        BigInteger knowledgeId,
+        BigInteger chunkId,
+        long syncVersion
+    ) {
+        requireChunk(knowledgeId, chunkId);
+        return syncTaskAppService.retry(chunkId, syncVersion);
+    }
+
+    @Override
+    public List<DocumentChunkSyncStatus> listIndexSyncStatus(
+        BigInteger knowledgeId,
+        BigInteger documentId,
+        List<BigInteger> chunkIds
+    ) {
+        if (documentId == null || chunkIds == null || chunkIds.isEmpty()) {
+            return Collections.emptyList();
+        }
+        BigInteger effectiveKnowledgeId = knowledgeId;
+        if (effectiveKnowledgeId == null) {
+            Document document = documentMapper.selectOneById(documentId);
+            if (document == null || document.getCollectionId() == null) {
+                throw new BusinessException("文档不存在");
+            }
+            effectiveKnowledgeId = document.getCollectionId();
+        }
+        if (chunkIds.size() > 200) {
+            throw new BusinessException("单次最多查询 200 个分块状态");
+        }
+        List<DocumentChunk> chunks = documentChunkMapper.selectSyncStates(documentId, chunkIds);
+        for (DocumentChunk chunk : chunks) {
+            if (chunk.getDocumentCollectionId() == null
+                || chunk.getDocumentCollectionId().compareTo(effectiveKnowledgeId) != 0) {
+                throw new BusinessException("分块不存在");
+            }
+        }
+        return chunks.stream().map(chunk -> new DocumentChunkSyncStatus(
+            chunk.getId(),
+            chunk.getIndexSyncStatus(),
+            chunk.getIndexSyncVersion(),
+            chunk.getIndexSyncErrorCode(),
+            chunk.getIndexSyncErrorMessage()
+        )).toList();
+    }
+
+    private DocumentChunk requireChunk(BigInteger knowledgeId, BigInteger chunkId) {
+        if (knowledgeId == null || chunkId == null) {
+            throw new BusinessException("分块不存在");
+        }
+        DocumentChunk chunk = documentChunkMapper.selectOneById(chunkId);
+        if (chunk == null || chunk.getDocumentCollectionId() == null
+            || chunk.getDocumentCollectionId().compareTo(knowledgeId) != 0) {
+            throw new BusinessException("分块不存在");
+        }
+        return chunk;
+    }
+
+    private DocumentCollection requireKnowledge(BigInteger knowledgeId) {
+        DocumentCollection knowledge = documentCollectionService.getById(knowledgeId);
+        if (knowledge == null) {
+            throw new BusinessException("知识库不存在");
+        }
+        return knowledge;
+    }
+
+    private void touchDocument(BigInteger documentId, Long chunkCount) {
+        if (documentId == null) {
+            return;
+        }
+        Document update = new Document();
+        update.setId(documentId);
+        update.setModified(new Date());
+        if (chunkCount != null) {
+            int count = chunkCount > Integer.MAX_VALUE
+                ? Integer.MAX_VALUE
+                : chunkCount.intValue();
+            update.setTotalChunks(count);
+            update.setCompletedChunks(count);
+            update.setFailedChunks(0);
+            update.setProgressPercent(100);
+        }
+        if (documentMapper.update(update) <= 0) {
+            throw new BusinessException("文档状态更新失败");
+        }
+    }
+
+    private void assertWithinEmbeddingLimit(BigInteger chunkId, String content) {
+        int tokenEstimate = BgeM3ChunkSafety.estimateContentTokens(content);
+        if (tokenEstimate > RagDefaults.BGE_M3_HARD_CHUNK_TOKEN_LIMIT) {
+            throw new BusinessException(
+                "分块内容超过向量模型上下文上限，请缩短后保存：chunkId=" + chunkId
+            );
+        }
+    }
+
+    private String toSearchableContent(String markdown) {
+        return replaceHtmlImages(replaceMarkdownImages(markdown)).trim();
+    }
+
+    private String replaceMarkdownImages(String markdown) {
+        Matcher matcher = MARKDOWN_IMAGE_PATTERN.matcher(markdown);
+        StringBuffer output = new StringBuffer();
+        while (matcher.find()) {
+            matcher.appendReplacement(
+                output,
+                Matcher.quoteReplacement(imageSearchText(matcher.group(1)))
+            );
+        }
+        matcher.appendTail(output);
+        return output.toString();
+    }
+
+    private String replaceHtmlImages(String content) {
+        Matcher matcher = HTML_IMAGE_PATTERN.matcher(content);
+        StringBuffer output = new StringBuffer();
+        while (matcher.find()) {
+            Matcher altMatcher = HTML_ALT_PATTERN.matcher(matcher.group());
+            String alt = altMatcher.find()
+                ? (altMatcher.group(1) == null ? altMatcher.group(2) : altMatcher.group(1))
+                : null;
+            matcher.appendReplacement(output, Matcher.quoteReplacement(imageSearchText(alt)));
+        }
+        matcher.appendTail(output);
+        return output.toString();
+    }
+
+    private String imageSearchText(String alt) {
+        return alt == null || alt.trim().isEmpty() ? "图片" : alt.trim();
+    }
+
+    private record UpdateOutcome(DocumentChunk chunk, BigInteger taskId) {
+    }
+
+    private record DeleteOutcome(DocumentChunkDeleteResult result, BigInteger taskId) {
     }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/impl/DocumentCollectionServiceImpl.java

@@ -29,6 +29,7 @@ import tech.easyflow.ai.mapper.DocumentCollectionMapper;
 import tech.easyflow.ai.mapper.DocumentMapper;
 import tech.easyflow.ai.mapper.FaqItemMapper;
 import tech.easyflow.ai.rag.KnowledgeRetrievalRequest;
+import tech.easyflow.ai.rag.KnowledgeVectorCandidateRequest;
 import tech.easyflow.ai.service.DocumentCollectionService;
 import tech.easyflow.ai.service.ModelService;
 import tech.easyflow.ai.support.DocumentStoreLifecycleSupport;
@@ -60,7 +61,6 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
     private static final int MAX_FAQ_IMAGES_IN_PROMPT = 3;
     private static final int INTERNAL_RECALL_MULTIPLIER = 5;
     private static final int MAX_INTERNAL_RECALL_LIMIT = 100;
-    private static final int LOG_TEXT_MAX_LENGTH = 300;
 
     @Resource
     private ModelService llmService;
@@ -204,6 +204,54 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
         return formattedDocuments;
     }
 
+    @Override
+    public List<Document> searchVectorCandidates(
+            KnowledgeVectorCandidateRequest request) {
+        if (request == null || request.getKnowledgeId() == null) {
+            throw new BusinessException("知识库ID不能为空");
+        }
+        if (StringUtil.noText(request.getQuery())) {
+            return Collections.emptyList();
+        }
+        if (request.getLimit() <= 0) {
+            throw new BusinessException("向量候选数量必须大于0");
+        }
+        if (!Double.isFinite(request.getMinVectorScore())
+                || request.getMinVectorScore() < 0D
+                || request.getMinVectorScore() > 1D) {
+            throw new BusinessException("向量相似度阈值无效");
+        }
+        DocumentCollection collection = request.getCollection();
+        if (collection == null
+                || !Objects.equals(
+                request.getKnowledgeId(), collection.getId())) {
+            throw new BusinessException("知识库检索快照无效");
+        }
+        List<Document> documents = prepareSearchDocuments(
+                collection,
+                searchVectorDocuments(
+                        collection,
+                        request.getQuery(),
+                        request.getLimit(),
+                        request.getMinVectorScore(),
+                        request.getQueryVector(),
+                        request.getTimeoutMillis()));
+        for (Document document : documents) {
+            document.addMetadata("knowledgeId", collection.getId());
+            document.addMetadata("knowledgeName", collection.getTitle());
+            document.addMetadata("vectorScore", document.getScore());
+        }
+        LOG.info(
+                "Knowledge raw vector candidates completed, callerType={}, callerId={}, knowledgeId={}, limit={}, minVectorScore={}, hitCount={}",
+                request.getCallerType(),
+                request.getCallerId(),
+                request.getKnowledgeId(),
+                request.getLimit(),
+                request.getMinVectorScore(),
+                documents.size());
+        return documents;
+    }
+
     /**
      * {@inheritDoc}
      */
@@ -279,38 +327,60 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
                                                  String keyword,
                                                  int docRecallMaxNum,
                                                  Float minSimilarity) {
+        return searchVectorDocuments(
+                documentCollection,
+                keyword,
+                docRecallMaxNum,
+                minSimilarity == null
+                        ? null
+                        : minSimilarity.doubleValue(),
+                null,
+                null);
+    }
+
+    private List<Document> searchVectorDocuments(DocumentCollection documentCollection,
+                                                 String keyword,
+                                                 int docRecallMaxNum,
+                                                 Double minSimilarity,
+                                                 float[] queryVector,
+                                                 Long timeoutMillis) {
         DocumentStore documentStore = documentCollection.toDocumentStore();
         if (documentStore == null) {
             throw new BusinessException("知识库没有配置向量库");
         }
 
         try {
-            Model model = llmService.getModelInstance(documentCollection.getVectorEmbedModelId());
+            if (queryVector == null || queryVector.length == 0) {
-            if (model == null) {
+                Model model = llmService.getModelInstance(documentCollection.getVectorEmbedModelId());
-                throw new BusinessException("知识库没有配置向量模型");
+                if (model == null) {
+                    throw new BusinessException("知识库没有配置向量模型");
+                }
+                documentStore.setEmbeddingModel(model.toEmbeddingModel());
             }
-
-            documentStore.setEmbeddingModel(model.toEmbeddingModel());
             SearchWrapper wrapper = new SearchWrapper();
             wrapper.setMaxResults(docRecallMaxNum);
+            if (queryVector != null && queryVector.length > 0) {
+                wrapper.setVector(queryVector);
+            }
             if (minSimilarity != null) {
-                wrapper.setMinScore((double) minSimilarity);
+                wrapper.setMinScore(minSimilarity);
             }
             wrapper.setText(keyword);
 
             StoreOptions options = StoreOptions.ofCollectionName(documentCollection.getVectorStoreCollection());
             options.setIndexName(documentCollection.getVectorStoreCollection());
+            if (timeoutMillis != null) {
+                options.setTimeoutMillis(timeoutMillis);
+            }
             List<Document> documents = documentStore.search(wrapper, options);
             List<Document> result = documents == null ? Collections.<Document>emptyList() : documents;
             LOG.info(
-                "Knowledge vector search completed, knowledgeId={}, collectionName={}, query={}, limit={}, minSimilarity={}, hitCount={}, hits={}",
+                "Knowledge vector search completed, knowledgeId={}, collectionName={}, limit={}, minSimilarity={}, hitCount={}",
                 documentCollection.getId(),
                 documentCollection.getVectorStoreCollection(),
-                keyword,
                 docRecallMaxNum,
                 minSimilarity,
-                result.size(),
+                result.size()
-                summarizeDocuments(result)
             );
             return result;
         } finally {
@@ -496,6 +566,7 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
                 }
                 String sourceFileName = hitSnapshot.findSourceFileName(item.getId());
                 if (StringUtil.hasText(sourceFileName)) {
+                    item.setTitle(sourceFileName);
                     item.addMetadata("sourceFileName", sourceFileName);
                 }
                 return true;
@@ -594,6 +665,7 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
                     return;
                 }
                 List<Map<String, String>> faqImages = readFaqImages(faqItem);
+                item.setTitle(faqItem.getQuestion());
                 item.setContent(buildFaqPromptContent(faqItem, faqImages));
 
                 Map<String, Object> metadataMap = item.getMetadataMap() == null
@@ -646,6 +718,7 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
         QueryWrapper chunkWrapper = QueryWrapper.create();
         chunkWrapper.in(DocumentChunk::getId, chunkIds);
         chunkWrapper.eq(DocumentChunk::getDocumentCollectionId, documentCollection.getId());
+        chunkWrapper.eq(DocumentChunk::getIndexSyncStatus, "SYNCED");
         Map<String, DocumentChunk> chunkMap = documentChunkMapper.selectListByQuery(chunkWrapper).stream()
             .collect(Collectors.toMap(item -> item.getId().toString(), item -> item, (a, b) -> a));
         if (chunkMap.isEmpty()) {
@@ -851,7 +924,7 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
     }
 
     /**
-     * 构建 RAG 原始命中摘要，便于排查向量、关键词与融合阶段的召回情况。
+     * 构建不包含知识正文和元数据的 RAG 原始命中摘要。
      *
      * @param hits RAG 命中列表
      * @return 命中摘要
@@ -865,21 +938,18 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
             .map(hit -> {
                 Map<String, Object> summary = new LinkedHashMap<>();
                 summary.put("id", hit.getDocumentId());
-                summary.put("title", hit.getTitle());
                 summary.put("source", hit.getHitSource());
                 summary.put("score", hit.getScore());
                 summary.put("vectorScore", hit.getVectorScore());
                 summary.put("keywordScore", hit.getKeywordScore());
                 summary.put("rank", hit.getRank());
-                summary.put("content", truncate(hit.getContent()));
-                summary.put("metadata", hit.getMetadata());
                 return summary;
             })
             .collect(Collectors.toList());
     }
 
     /**
-     * 构建文档命中摘要，避免完整知识库内容撑爆日志。
+     * 构建不包含知识正文、标题和元数据的文档命中摘要。
      *
      * @param documents 文档命中列表
      * @return 文档摘要
@@ -893,25 +963,10 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
             .map(document -> {
                 Map<String, Object> summary = new LinkedHashMap<>();
                 summary.put("id", document.getId());
-                summary.put("title", document.getTitle());
                 summary.put("score", document.getScore());
-                summary.put("content", truncate(document.getContent()));
-                summary.put("metadata", document.getMetadataMap());
                 return summary;
             })
             .collect(Collectors.toList());
     }
 
-    /**
-     * 截断日志文本，保留足够排查上下文。
-     *
-     * @param text 原始文本
-     * @return 截断文本
-     */
-    private String truncate(String text) {
-        if (text == null || text.length() <= LOG_TEXT_MAX_LENGTH) {
-            return text;
-        }
-        return text.substring(0, LOG_TEXT_MAX_LENGTH) + "...";
-    }
 }

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/impl/DocumentServiceImpl.java

@@ -31,6 +31,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import tech.easyflow.ai.config.SearcherFactory;
+import tech.easyflow.ai.documentchunk.DocumentChunkSyncState;
 import tech.easyflow.common.util.SearchKeywordUtil;
 import tech.easyflow.ai.documentimport.DocumentImportDtos;
 import tech.easyflow.ai.documentimport.DocumentImportKeys;
@@ -40,6 +41,7 @@ import tech.easyflow.ai.documentimport.task.KnowledgeDocumentImportTaskAppServic
 import tech.easyflow.ai.entity.*;
 import tech.easyflow.ai.enums.DocumentProcessStatus;
 import tech.easyflow.ai.mapper.DocumentChunkMapper;
+import tech.easyflow.ai.mapper.DocumentChunkSyncTaskMapper;
 import tech.easyflow.ai.mapper.DocumentMapper;
 import tech.easyflow.ai.service.DocumentChunkService;
 import tech.easyflow.ai.service.DocumentCollectionService;
@@ -47,6 +49,7 @@ import tech.easyflow.ai.service.DocumentService;
 import tech.easyflow.ai.service.ModelService;
 import tech.easyflow.ai.support.DocumentStoreLifecycleSupport;
 import tech.easyflow.common.ai.rag.ExcelDocumentSplitter;
+import tech.easyflow.common.cache.RedisLockExecutor;
 import tech.easyflow.common.domain.Result;
 import tech.easyflow.common.filestorage.FileStorageService;
 import tech.easyflow.common.util.FileUtil;
@@ -58,8 +61,11 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.math.BigInteger;
 import java.math.BigDecimal;
+import java.time.Duration;
 import java.util.*;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
 
 import static tech.easyflow.ai.entity.DocumentCollection.KEY_CAN_UPDATE_EMBEDDING_MODEL;
 import static tech.easyflow.ai.entity.table.DocumentChunkTableDef.DOCUMENT_CHUNK;
@@ -83,6 +89,9 @@ public class DocumentServiceImpl extends ServiceImpl<DocumentMapper, Document> i
     @Resource
     private DocumentChunkMapper documentChunkMapper;
 
+    @Resource
+    private DocumentChunkSyncTaskMapper documentChunkSyncTaskMapper;
+
     @Resource
     private DocumentCollectionService knowledgeService;
 
@@ -110,6 +119,9 @@ public class DocumentServiceImpl extends ServiceImpl<DocumentMapper, Document> i
     @Autowired
     private KnowledgeDocumentImportTaskAppService importTaskAppService;
 
+    @Autowired
+    private RedisLockExecutor redisLockExecutor;
+
     @Override
     public Page<Document> getDocumentList(String knowledgeId, int pageSize, int pageNum, String fileName) {
         return queryDocumentList(knowledgeId, pageSize, pageNum, fileName, null, false);
@@ -202,6 +214,49 @@ public class DocumentServiceImpl extends ServiceImpl<DocumentMapper, Document> i
     @Override
     @Transactional
     public boolean removeDoc(String id) {
+        AtomicBoolean removalCompleted = new AtomicBoolean();
+        AtomicReference<Boolean> removalResult = new AtomicReference<>();
+        try {
+            return redisLockExecutor.executeWithRenewingLock(
+                DocumentChunkSyncState.parentLockKey(id),
+                Duration.ofSeconds(5),
+                Duration.ofSeconds(30),
+                () -> {
+                    try {
+                        boolean result = removeDocLocked(id);
+                        removalResult.set(result);
+                        removalCompleted.set(true);
+                        return result;
+                    } catch (BusinessException exception) {
+                        throw exception;
+                    } catch (RuntimeException exception) {
+                        throw new DocumentRemovalExecutionException(exception);
+                    }
+                }
+            );
+        } catch (BusinessException exception) {
+            throw exception;
+        } catch (DocumentRemovalExecutionException exception) {
+            throw exception.getOriginalCause();
+        } catch (RuntimeException exception) {
+            if (removalCompleted.get()) {
+                Log.warn(
+                    "文档删除已完成但分布式锁在收尾阶段失效，继续提交数据库事务: documentId={}",
+                    id,
+                    exception
+                );
+                return Boolean.TRUE.equals(removalResult.get());
+            }
+            throw new BusinessException(
+                503,
+                DocumentChunkServiceImpl.DOCUMENT_CHUNK_LOCK_UNAVAILABLE,
+                "文档正在处理中，请稍后重试",
+                exception
+            );
+        }
+    }
+
+    private boolean removeDocLocked(String id) {
         // 查询该文档对应哪些分割的字段，先删除
         QueryWrapper queryWrapperDocument = QueryWrapper.create().eq(Document::getId, id);
         Document oneByQuery = documentMapper.selectOneByQuery(queryWrapperDocument);
@@ -218,23 +273,38 @@ public class DocumentServiceImpl extends ServiceImpl<DocumentMapper, Document> i
 
         QueryWrapper queryWrapper = QueryWrapper.create()
                 .select(DOCUMENT_CHUNK.ID).eq(DocumentChunk::getDocumentId, id);
-        List<BigInteger> chunkIds = documentChunkMapper.selectListByQueryAs(
+        List<BigInteger> chunkIds = new ArrayList<>(
-            queryWrapper,
+            documentChunkMapper.selectListByQueryAs(queryWrapper, BigInteger.class)
-            BigInteger.class
         );
+        chunkIds.sort(Comparator.naturalOrder());
         DocumentStore documentStore = null;
         try {
+            Model model = null;
             if (!chunkIds.isEmpty()) {
                 documentStore = knowledge.toDocumentStore();
                 if (documentStore == null) {
-                    return false;
+                    throw new BusinessException("文档向量存储不可用");
                 }
-                Model model = modelService.getById(
+                model = modelService.getById(
                     knowledge.getVectorEmbedModelId()
                 );
                 if (model == null) {
-                    return false;
+                    throw new BusinessException("文档向量模型不存在");
                 }
+            }
+            Date supersededAt = new Date();
+            for (BigInteger chunkId : chunkIds) {
+                redisLockExecutor.executeWithRenewingLock(
+                    DocumentChunkSyncState.syncLockKey(chunkId),
+                    Duration.ofSeconds(5),
+                    Duration.ofSeconds(30),
+                    () -> {
+                        documentChunkSyncTaskMapper.supersedeChunk(chunkId, supersededAt);
+                        return null;
+                    }
+                );
+            }
+            if (!chunkIds.isEmpty()) {
                 StoreOptions options = StoreOptions.ofCollectionName(
                     knowledge.getVectorStoreCollection()
                 );
@@ -253,7 +323,16 @@ public class DocumentServiceImpl extends ServiceImpl<DocumentMapper, Document> i
             // 删除搜索引擎中的数据
             DocumentSearcher searcher = searcherFactory.getSearcher();
             if (searcher != null) {
-                chunkIds.forEach(searcher::deleteDocument);
+                for (BigInteger chunkId : chunkIds) {
+                    if (!searcher.deleteDocument(chunkId)) {
+                        Log.error(
+                            "删除文档关键词索引失败: documentId={}, chunkId={}",
+                            id,
+                            chunkId
+                        );
+                        throw new BusinessException("文档关键词索引删除失败");
+                    }
+                }
             }
             int ck = documentChunkMapper.deleteByQuery(QueryWrapper.create().eq(DocumentChunk::getDocumentId, id));
             if (ck < 0) {
@@ -1099,6 +1178,17 @@ public class DocumentServiceImpl extends ServiceImpl<DocumentMapper, Document> i
         }
     }
 
+    private static final class DocumentRemovalExecutionException extends RuntimeException {
+
+        private DocumentRemovalExecutionException(RuntimeException cause) {
+            super(cause);
+        }
+
+        private RuntimeException getOriginalCause() {
+            return (RuntimeException) getCause();
+        }
+    }
+
     public DocumentSplitter getDocumentSplitter(DocumentCollectionSplitParams params) {
         String splitterName = params.getSplitterName();
         int chunkSize = params.getChunkSize();

easyflow-modules/easyflow-module-ai/src/main/java/tech/easyflow/ai/service/impl/ModelServiceImpl.java

@@ -216,6 +216,20 @@ public class ModelServiceImpl extends ServiceImpl<ModelMapper, Model> implements
         return fillProviderDefaults(model);
     }
 
+    @Override
+    public List<Model> listModelInstances(Collection<BigInteger> modelIds) {
+        if (modelIds == null || modelIds.isEmpty()) {
+            return List.of();
+        }
+        return modelMapper.selectListWithRelationsByQuery(
+                        QueryWrapper.create().in(Model::getId, modelIds))
+                .stream()
+                .map(model -> model.getModelProvider() == null
+                        ? model
+                        : fillProviderDefaults(model))
+                .toList();
+    }
+
     @Override
     public Model getModelInstanceByInvokeCode(String invokeCode) {
         if (StrUtil.isBlank(invokeCode)) {

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/document/service/impl/DocumentParseBridgeServiceImplTest.java

@@ -6,6 +6,7 @@ import com.easyagents.document.core.entity.ParseResponse;
 import com.easyagents.document.core.entity.ParseResult;
 import com.easyagents.document.core.entity.ParseTaskInfo;
 import com.easyagents.document.core.entity.ParseTaskStatus;
+import com.easyagents.document.core.exception.DocumentAsyncTaskNotFoundException;
 import com.easyagents.document.pdf.PdfDocumentParseService;
 import com.easyagents.document.pptx.PptxDocumentParseService;
 import com.easyagents.document.xlsx.XlsxDocumentParseService;
@@ -128,6 +129,33 @@ public class DocumentParseBridgeServiceImplTest {
         Assert.assertEquals(0, pptxService.queryResultCallCount);
     }
 
+    /**
+     * 验证本地 Office 内存任务丢失会转换为稳定桥接错误码。
+     */
+    @Test
+    public void shouldExposeMissingOfficeTaskAsStableBridgeError() {
+        FakePptxDocumentParseService pptxService =
+            new FakePptxDocumentParseService();
+        pptxService.queryTaskInfoError =
+            new DocumentAsyncTaskNotFoundException("lost-task");
+        DocumentParseBridgeServiceImpl bridgeService =
+            buildBridgeService(null, pptxService, null, null);
+
+        try {
+            bridgeService.queryTaskInfo(
+                "lost-task",
+                buildSource(
+                    "slides.pptx",
+                    "application/vnd.openxmlformats-officedocument.presentationml.presentation"
+                )
+            );
+            Assert.fail("expected DocumentParseBridgeException");
+        } catch (DocumentParseBridgeException error) {
+            Assert.assertEquals("task_not_found", error.getCode());
+            Assert.assertSame(pptxService.queryTaskInfoError, error.getCause());
+        }
+    }
+
     /**
      * 验证缺少底层服务时抛出稳定错误码。
      */
@@ -418,6 +446,7 @@ public class DocumentParseBridgeServiceImplTest {
         private int parseCallCount;
         private int queryTaskInfoCallCount;
         private int queryResultCallCount;
+        private RuntimeException queryTaskInfoError;
 
         @Override
         public ParseResponse parse(ParseRequest request) {
@@ -450,6 +479,9 @@ public class DocumentParseBridgeServiceImplTest {
         @Override
         public ParseTaskInfo queryTaskInfo(String taskId) {
             queryTaskInfoCallCount++;
+            if (queryTaskInfoError != null) {
+                throw queryTaskInfoError;
+            }
             throw new UnsupportedOperationException();
         }
     }

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/documentchunk/DocumentChunkSyncTaskAppServiceTest.java

@@ -0,0 +1,233 @@
+package tech.easyflow.ai.documentchunk;
+
+import org.junit.Test;
+import org.mockito.InOrder;
+import org.mockito.Mockito;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.support.SimpleTransactionStatus;
+import org.springframework.beans.factory.ObjectProvider;
+import tech.easyflow.ai.config.AiMilvusConfig;
+import tech.easyflow.ai.config.SearcherFactory;
+import tech.easyflow.ai.entity.DocumentChunk;
+import tech.easyflow.ai.entity.DocumentChunkSyncTask;
+import tech.easyflow.ai.mapper.DocumentChunkMapper;
+import tech.easyflow.ai.mapper.DocumentChunkSyncTaskMapper;
+import tech.easyflow.ai.service.DocumentCollectionService;
+import tech.easyflow.ai.service.ModelService;
+import tech.easyflow.common.cache.RedisLockExecutor;
+
+import java.math.BigInteger;
+import java.util.List;
+import java.util.function.Supplier;
+
+/**
+ * 分块索引同步任务恢复与版本语义测试。
+ */
+public class DocumentChunkSyncTaskAppServiceTest {
+
+    @Test
+    public void dispatchPendingShouldRecoverExpiredTasksAndSendClaimedRows() {
+        Fixture fixture = fixture(1);
+        Mockito.when(fixture.taskMapper.selectPendingDue(
+            Mockito.any(), Mockito.any(), Mockito.anyInt()
+        )).thenReturn(List.of(fixture.task));
+        Mockito.when(fixture.taskMapper.markDispatched(
+            Mockito.eq(fixture.taskId), Mockito.any(), Mockito.any()
+        )).thenReturn(1);
+
+        fixture.service.dispatchPendingTasks();
+
+        Mockito.verify(fixture.taskMapper).recoverExpired(Mockito.any());
+        Mockito.verify(fixture.producer).send(fixture.taskId);
+    }
+
+    @Test
+    public void outdatedTaskShouldBeSupersededWithoutTouchingIndexes() {
+        Fixture fixture = fixture(1);
+        fixture.chunk.setIndexSyncVersion(2L);
+
+        fixture.service.handleTask(fixture.taskId);
+
+        Mockito.verify(fixture.taskMapper).finishOwned(
+            Mockito.eq(fixture.taskId), Mockito.anyString(),
+            Mockito.eq(DocumentChunkSyncState.TASK_SUPERSEDED),
+            Mockito.isNull(), Mockito.isNull(), Mockito.any()
+        );
+        Mockito.verifyNoInteractions(fixture.collectionService);
+    }
+
+    @Test
+    public void transientFailureShouldReturnTaskToPending() {
+        Fixture fixture = fixture(1);
+
+        fixture.service.handleTask(fixture.taskId);
+
+        InOrder order = Mockito.inOrder(
+            fixture.taskMapper,
+            fixture.collectionService
+        );
+        order.verify(fixture.taskMapper).lockChunkTasks(fixture.chunkId);
+        order.verify(fixture.collectionService).getById(Mockito.any());
+        Mockito.verify(fixture.taskMapper).failOrRetryOwned(
+            Mockito.eq(fixture.taskId), Mockito.anyString(),
+            Mockito.eq(DocumentChunkSyncState.PENDING), Mockito.any(),
+            Mockito.eq("INDEX_SOURCE_MISSING"), Mockito.anyString(), Mockito.any()
+        );
+        Mockito.verify(fixture.chunkMapper, Mockito.never()).updateSyncState(
+            Mockito.any(), Mockito.anyLong(), Mockito.anyString(), Mockito.any(), Mockito.any()
+        );
+    }
+
+    @Test
+    public void workerShouldLockChunkTaskRangeBeforeReadingOwnedTask() {
+        Fixture fixture = fixture(1);
+
+        fixture.service.handleTask(fixture.taskId);
+
+        InOrder order = Mockito.inOrder(fixture.taskMapper);
+        order.verify(fixture.taskMapper).selectOneById(fixture.taskId);
+        order.verify(fixture.taskMapper).claim(
+            Mockito.eq(fixture.taskId), Mockito.anyString(), Mockito.any(), Mockito.any()
+        );
+        order.verify(fixture.taskMapper).lockChunkTasks(fixture.chunkId);
+        order.verify(fixture.taskMapper).selectOneById(fixture.taskId);
+    }
+
+    @Test
+    public void exhaustedFailureShouldExposeFailedStateOnCurrentVersion() {
+        Fixture fixture = fixture(5);
+
+        fixture.service.handleTask(fixture.taskId);
+
+        Mockito.verify(fixture.taskMapper).failOrRetryOwned(
+            Mockito.eq(fixture.taskId), Mockito.anyString(),
+            Mockito.eq(DocumentChunkSyncState.FAILED), Mockito.any(),
+            Mockito.eq("INDEX_SOURCE_MISSING"), Mockito.anyString(), Mockito.any()
+        );
+        Mockito.verify(fixture.chunkMapper).updateSyncState(
+            fixture.chunkId, 1L, DocumentChunkSyncState.FAILED,
+            "INDEX_SOURCE_MISSING", "分块或知识库不存在"
+        );
+    }
+
+    @Test
+    public void exhaustedDeleteFailureShouldRemainPendingForDurableCleanup() {
+        Fixture fixture = fixture(5);
+        fixture.task.setOperation(DocumentChunkSyncState.OPERATION_DELETE);
+        Mockito.when(fixture.chunkMapper.selectOneById(fixture.chunkId)).thenReturn(null);
+
+        fixture.service.handleTask(fixture.taskId);
+
+        Mockito.verify(fixture.taskMapper).failOrRetryOwned(
+            Mockito.eq(fixture.taskId), Mockito.anyString(),
+            Mockito.eq(DocumentChunkSyncState.PENDING), Mockito.any(),
+            Mockito.eq("INDEX_SYNC_FAILED"), Mockito.anyString(), Mockito.any()
+        );
+        Mockito.verify(fixture.chunkMapper, Mockito.never()).updateSyncState(
+            Mockito.any(), Mockito.anyLong(), Mockito.anyString(), Mockito.any(), Mockito.any()
+        );
+    }
+
+    @Test
+    public void manualRetryShouldResetTaskAndChunkBeforeDispatch() {
+        Fixture fixture = fixture(5);
+        fixture.chunk.setIndexSyncStatus(DocumentChunkSyncState.FAILED);
+        fixture.task.setStatus(DocumentChunkSyncState.FAILED);
+        Mockito.when(fixture.taskMapper.selectFailed(fixture.chunkId, 1L))
+            .thenReturn(fixture.task);
+        Mockito.when(fixture.taskMapper.retryFailed(
+            Mockito.eq(fixture.taskId), Mockito.eq(fixture.chunkId),
+            Mockito.eq(1L), Mockito.any()
+        )).thenReturn(1);
+        Mockito.when(fixture.chunkMapper.updateSyncState(
+            fixture.chunkId, 1L, DocumentChunkSyncState.PENDING, null, null
+        )).thenReturn(1);
+
+        fixture.service.retry(fixture.chunkId, 1L);
+
+        Mockito.verify(fixture.producer).send(fixture.taskId);
+    }
+
+    private static Fixture fixture(int attemptCount) {
+        BigInteger taskId = BigInteger.valueOf(10);
+        BigInteger chunkId = BigInteger.valueOf(20);
+        DocumentChunkSyncTask task = new DocumentChunkSyncTask();
+        task.setId(taskId);
+        task.setChunkId(chunkId);
+        task.setDocumentId(BigInteger.valueOf(30));
+        task.setDocumentCollectionId(BigInteger.valueOf(40));
+        task.setVectorCollection("kb-test");
+        task.setOperation(DocumentChunkSyncState.OPERATION_UPSERT);
+        task.setSyncVersion(1L);
+        task.setStatus(DocumentChunkSyncState.PENDING);
+        task.setAttemptCount(attemptCount);
+
+        DocumentChunk chunk = new DocumentChunk();
+        chunk.setId(chunkId);
+        chunk.setDocumentCollectionId(task.getDocumentCollectionId());
+        chunk.setIndexSyncVersion(1L);
+        chunk.setIndexSyncStatus(DocumentChunkSyncState.PENDING);
+
+        DocumentChunkSyncTaskMapper taskMapper = Mockito.mock(DocumentChunkSyncTaskMapper.class);
+        Mockito.when(taskMapper.selectOneById(taskId)).thenReturn(task);
+        Mockito.when(taskMapper.claim(
+            Mockito.eq(taskId), Mockito.anyString(), Mockito.any(), Mockito.any()
+        )).thenAnswer(invocation -> {
+            task.setStatus(DocumentChunkSyncState.TASK_RUNNING);
+            task.setExecutionToken(invocation.getArgument(1));
+            return 1;
+        });
+        Mockito.when(taskMapper.lockChunkTasks(chunkId)).thenReturn(List.of(taskId));
+        Mockito.when(taskMapper.failOrRetryOwned(
+            Mockito.any(), Mockito.anyString(), Mockito.anyString(), Mockito.any(),
+            Mockito.any(), Mockito.any(), Mockito.any()
+        )).thenReturn(1);
+        Mockito.when(taskMapper.finishOwned(
+            Mockito.any(), Mockito.anyString(), Mockito.anyString(), Mockito.any(),
+            Mockito.any(), Mockito.any()
+        )).thenReturn(1);
+
+        DocumentChunkMapper chunkMapper = Mockito.mock(DocumentChunkMapper.class);
+        Mockito.when(chunkMapper.selectOneById(chunkId)).thenReturn(chunk);
+        DocumentCollectionService collectionService = Mockito.mock(DocumentCollectionService.class);
+        ModelService modelService = Mockito.mock(ModelService.class);
+        SearcherFactory searcherFactory = Mockito.mock(SearcherFactory.class);
+        DocumentChunkSyncTaskProducer producer = Mockito.mock(DocumentChunkSyncTaskProducer.class);
+        PlatformTransactionManager transactionManager = Mockito.mock(PlatformTransactionManager.class);
+        Mockito.when(transactionManager.getTransaction(Mockito.any()))
+            .thenReturn(new SimpleTransactionStatus());
+        RedisLockExecutor redisLockExecutor = Mockito.mock(RedisLockExecutor.class);
+        Mockito.doAnswer(invocation -> invocation.<Supplier<?>>getArgument(3).get())
+            .when(redisLockExecutor).executeWithRenewingLock(
+                Mockito.anyString(), Mockito.any(), Mockito.any(), Mockito.<Supplier<?>>any()
+            );
+
+        DocumentChunkSyncTaskAppService service = new DocumentChunkSyncTaskAppService(
+            taskMapper,
+            chunkMapper,
+            collectionService,
+            modelService,
+            searcherFactory,
+            producer,
+            transactionManager,
+            redisLockExecutor,
+            Mockito.mock(AiMilvusConfig.class),
+            Mockito.mock(ObjectProvider.class)
+        );
+        return new Fixture(service, taskMapper, chunkMapper, collectionService,
+            producer, task, chunk, taskId, chunkId);
+    }
+
+    private record Fixture(
+        DocumentChunkSyncTaskAppService service,
+        DocumentChunkSyncTaskMapper taskMapper,
+        DocumentChunkMapper chunkMapper,
+        DocumentCollectionService collectionService,
+        DocumentChunkSyncTaskProducer producer,
+        DocumentChunkSyncTask task,
+        DocumentChunk chunk,
+        BigInteger taskId,
+        BigInteger chunkId
+    ) {
+    }
+}

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/documentimport/task/CsvImportSupportPolicyTest.java

@@ -2,6 +2,7 @@ package tech.easyflow.ai.documentimport.task;
 
 import org.junit.Assert;
 import org.junit.Test;
+import tech.easyflow.ai.document.support.DocumentParseFilePolicy;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
@@ -20,6 +21,13 @@ public class CsvImportSupportPolicyTest {
     @Test
     public void shouldAllowCsvAcrossAllKnowledgeImportEntrypoints()
         throws Exception {
+        Assert.assertFalse(
+            DocumentParseFilePolicy.isSupportedFileName("legacy.xls"));
+        Assert.assertTrue(
+            DocumentParseFilePolicy.isSupportedFileName("REPORT.XLSX"));
+        Assert.assertEquals(
+            "TXT、PDF、DOCX、MD、PPTX、XLSX、CSV",
+            DocumentParseFilePolicy.supportedTypeLabel());
         KnowledgeDocumentImportTaskAppService taskService =
             new KnowledgeDocumentImportTaskAppService();
         Method assertSupported = KnowledgeDocumentImportTaskAppService.class
@@ -43,10 +51,10 @@ public class CsvImportSupportPolicyTest {
         Assert.assertTrue(readSupportedExtensions(
             KnowledgeImportBatchFacade.class).contains("csv"));
         Assert.assertSame(
-            DocumentImportFormatPolicy.supportedExtensions(),
+            DocumentParseFilePolicy.supportedExtensions(),
             readSupportedExtensions(DocumentImportBatchAppService.class));
         Assert.assertSame(
-            DocumentImportFormatPolicy.supportedExtensions(),
+            DocumentParseFilePolicy.supportedExtensions(),
             readSupportedExtensions(KnowledgeImportBatchFacade.class));
     }
 

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/documentimport/task/DocumentImportBatchAppServiceTest.java

@@ -873,8 +873,8 @@ public class DocumentImportBatchAppServiceTest {
                 Mockito.anyString(),
                 Mockito.same(recoveryError)
             );
-        Mockito.verify(context.batchMapper, Mockito.never())
+        Mockito.verify(context.recoveryCoordinator, Mockito.never())
-            .finalizeRecoveryPending(
+            .finalizeRecovery(
                 Mockito.any(), Mockito.anyString(), Mockito.any(Date.class));
     }
 
@@ -892,8 +892,9 @@ public class DocumentImportBatchAppServiceTest {
         Mockito.when(context.batchMapper.selectRecoveryPendingBatches(
             Mockito.any(Date.class), Mockito.anyInt()
         )).thenReturn(List.of(batch));
-        Mockito.when(context.batchMapper.selectClaimedRecovery(
+        Mockito.when(context.recoveryCoordinator.claim(
-            Mockito.eq(batch.getId()), Mockito.anyString()
+            Mockito.eq(batch.getId()), Mockito.anyString(),
+            Mockito.any(Date.class), Mockito.any(Date.class)
         )).thenReturn(null);
 
         int recovered = context.service.recoverPendingBatchRetries();
@@ -924,8 +925,9 @@ public class DocumentImportBatchAppServiceTest {
         Mockito.when(context.batchMapper.selectRecoveryPendingBatches(
             Mockito.any(Date.class), Mockito.anyInt()
         )).thenReturn(List.of(batch));
-        Mockito.when(context.batchMapper.selectClaimedRecovery(
+        Mockito.when(context.recoveryCoordinator.claim(
-            Mockito.eq(batch.getId()), Mockito.anyString()
+            Mockito.eq(batch.getId()), Mockito.anyString(),
+            Mockito.any(Date.class), Mockito.any(Date.class)
         )).thenReturn(claimedBatch);
 
         int recovered = context.service.recoverPendingBatchRetries();
@@ -939,16 +941,14 @@ public class DocumentImportBatchAppServiceTest {
             );
         ArgumentCaptor<String> recoveryToken =
             ArgumentCaptor.forClass(String.class);
-        Mockito.verify(context.batchMapper).claimRecoveryPending(
+        Mockito.verify(context.recoveryCoordinator).claim(
             Mockito.eq(batch.getId()),
             recoveryToken.capture(),
             Mockito.any(Date.class),
             Mockito.any(Date.class)
         );
-        Mockito.verify(context.batchMapper).selectClaimedRecovery(
+        Mockito.verify(context.recoveryCoordinator)
-            batch.getId(), recoveryToken.getValue());
+            .finalizeRecovery(
-        Mockito.verify(context.batchMapper)
-            .finalizeRecoveryPending(
                 Mockito.eq(batch.getId()),
                 Mockito.eq(recoveryToken.getValue()),
                 Mockito.any(Date.class));
@@ -975,8 +975,8 @@ public class DocumentImportBatchAppServiceTest {
 
         Assert.assertEquals(1, context.service.recoverPendingBatchRetries());
 
-        Mockito.verify(context.batchMapper, Mockito.never())
+        Mockito.verify(context.recoveryCoordinator, Mockito.never())
-            .finalizeRecoveryPending(
+            .finalizeRecovery(
                 Mockito.any(), Mockito.anyString(), Mockito.any(Date.class));
         Mockito.verifyNoInteractions(context.circuitBreaker);
     }
@@ -990,12 +990,12 @@ public class DocumentImportBatchAppServiceTest {
         BigInteger batchId = BigInteger.valueOf(84);
         String recoveryToken = "recovery-token";
         AtomicLong now = new AtomicLong(1_000L);
-        Mockito.when(context.batchMapper.renewRecoveryPendingLease(
+        Mockito.when(context.recoveryCoordinator.renew(
             Mockito.eq(batchId),
             Mockito.eq(recoveryToken),
             Mockito.any(Date.class),
             Mockito.any(Date.class)
-        )).thenReturn(1, 0);
+        )).thenReturn(true, false);
         BooleanSupplier guard = context.service.createRecoveryLeaseGuard(
             batchId,
             recoveryToken,
@@ -1004,8 +1004,8 @@ public class DocumentImportBatchAppServiceTest {
         );
 
         Assert.assertTrue(guard.getAsBoolean());
-        Mockito.verify(context.batchMapper, Mockito.never())
+        Mockito.verify(context.recoveryCoordinator, Mockito.never())
-            .renewRecoveryPendingLease(
+            .renew(
                 Mockito.any(),
                 Mockito.anyString(),
                 Mockito.any(Date.class),
@@ -1017,8 +1017,8 @@ public class DocumentImportBatchAppServiceTest {
         now.set(121_000L);
         Assert.assertFalse(guard.getAsBoolean());
 
-        Mockito.verify(context.batchMapper, Mockito.times(2))
+        Mockito.verify(context.recoveryCoordinator, Mockito.times(2))
-            .renewRecoveryPendingLease(
+            .renew(
                 Mockito.eq(batchId),
                 Mockito.eq(recoveryToken),
                 Mockito.any(Date.class),
@@ -1198,6 +1198,8 @@ public class DocumentImportBatchAppServiceTest {
         RedisLockExecutor redisLockExecutor = Mockito.mock(RedisLockExecutor.class);
         DocumentImportBatchCircuitBreaker circuitBreaker =
             Mockito.mock(DocumentImportBatchCircuitBreaker.class);
+        DocumentImportRecoveryCoordinator recoveryCoordinator =
+            Mockito.mock(DocumentImportRecoveryCoordinator.class);
         RedisLockExecutor.LockHandle lockHandle = Mockito.mock(RedisLockExecutor.LockHandle.class);
         Mockito.when(redisLockExecutor.tryAcquire(
             Mockito.anyString(), Mockito.any(), Mockito.any()
@@ -1213,21 +1215,16 @@ public class DocumentImportBatchAppServiceTest {
         Mockito.when(batchMapper.selectOwnedForUpdate(
             Mockito.any(), Mockito.anyString(), Mockito.any()
         )).thenReturn(batch);
-        Mockito.when(batchMapper.claimRecoveryPending(
+        Mockito.when(recoveryCoordinator.claim(
-            Mockito.any(),
+            Mockito.any(), Mockito.anyString(),
-            Mockito.anyString(),
+            Mockito.any(Date.class), Mockito.any(Date.class)
-            Mockito.any(Date.class),
-            Mockito.any(Date.class)
-        )).thenReturn(1);
-        Mockito.when(batchMapper.selectClaimedRecovery(
-            Mockito.any(), Mockito.anyString()
         )).thenReturn(batch);
         Mockito.when(taskAppService.retryBatchFailures(
             Mockito.any(), Mockito.anySet(), Mockito.any(BooleanSupplier.class)
         )).thenReturn(true);
-        Mockito.when(batchMapper.finalizeRecoveryPending(
+        Mockito.when(recoveryCoordinator.finalizeRecovery(
             Mockito.any(), Mockito.anyString(), Mockito.any(Date.class)
-        )).thenReturn(1);
+        )).thenReturn(true);
 
         DocumentImportBatchAppService service = new DocumentImportBatchAppService(
             batchService,
@@ -1239,12 +1236,13 @@ public class DocumentImportBatchAppServiceTest {
             itemMapper,
             documentMapper,
             redisLockExecutor,
-            circuitBreaker
+            circuitBreaker,
+            recoveryCoordinator
         );
         return new TestContext(
             service, batchService, itemService, batchTracker,
             taskAppService, batchMapper, itemMapper, documentMapper,
-            circuitBreaker, lockHandle
+            circuitBreaker, recoveryCoordinator, lockHandle
         );
     }
 
@@ -1356,6 +1354,7 @@ public class DocumentImportBatchAppServiceTest {
         DocumentImportBatchItemMapper itemMapper,
         DocumentMapper documentMapper,
         DocumentImportBatchCircuitBreaker circuitBreaker,
+        DocumentImportRecoveryCoordinator recoveryCoordinator,
         RedisLockExecutor.LockHandle lockHandle
     ) {
     }

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/documentimport/task/DocumentImportBatchCircuitBreakerTest.java

@@ -8,7 +8,9 @@ import org.springframework.dao.DataAccessResourceFailureException;
 import org.springframework.jdbc.BadSqlGrammarException;
 import org.springframework.data.redis.RedisSystemException;
 import tech.easyflow.ai.entity.DocumentImportBatch;
+import tech.easyflow.ai.entity.DocumentImportBatchItem;
 import tech.easyflow.ai.entity.DocumentImportTask;
+import tech.easyflow.ai.enums.DocumentImportBatchItemStatus;
 import tech.easyflow.ai.enums.DocumentImportBatchStatus;
 import tech.easyflow.ai.enums.DocumentImportMode;
 import tech.easyflow.ai.enums.DocumentImportTaskPhase;
@@ -50,7 +52,7 @@ public class DocumentImportBatchCircuitBreakerTest {
         DocumentImportTaskMapper taskMapper =
             Mockito.mock(DocumentImportTaskMapper.class);
         Mockito.when(taskMapper.selectOneById(taskId)).thenReturn(task);
-        Mockito.when(batchMapper.selectOneById(batchId)).thenReturn(batch);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
         Mockito.when(batchMapper.interruptRunningBatchForActiveTask(
             Mockito.eq(batchId),
             Mockito.eq(taskId),
@@ -161,6 +163,7 @@ public class DocumentImportBatchCircuitBreakerTest {
         DocumentImportTaskMapper taskMapper =
             Mockito.mock(DocumentImportTaskMapper.class);
         Mockito.when(batchMapper.selectOneById(batchId)).thenReturn(batch);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
         Mockito.when(batchMapper.interruptOwnedRecoveryBatch(
             Mockito.eq(batchId),
             Mockito.eq("stale-token"),
@@ -183,6 +186,136 @@ public class DocumentImportBatchCircuitBreakerTest {
             Mockito.any(Date.class), Mockito.any());
     }
 
+    /**
+     * 验证零重排熔断在批次与失败项锁内完成，且未发生并发推进时生效。
+     */
+    @Test
+    public void shouldInterruptRecoveryFailureWhenItemsRemainFailed() {
+        BigInteger batchId = BigInteger.valueOf(42);
+        BigInteger itemId = BigInteger.valueOf(43);
+        String recoveryToken = "current-token";
+        DocumentImportBatch batch = runningAutoBatch(batchId);
+        batch.setRecoveryPending(true);
+        batch.setRecoveryToken(recoveryToken);
+        batch.setRecoveryLeaseUntil(
+            new Date(System.currentTimeMillis() + 60_000));
+        DocumentImportBatchItem item = new DocumentImportBatchItem();
+        item.setId(itemId);
+        item.setBatchId(batchId);
+        item.setStatus(DocumentImportBatchItemStatus.FAILED.name());
+        DocumentImportBatchMapper batchMapper =
+            Mockito.mock(DocumentImportBatchMapper.class);
+        DocumentImportBatchItemMapper itemMapper =
+            Mockito.mock(DocumentImportBatchItemMapper.class);
+        DocumentImportTaskMapper taskMapper =
+            Mockito.mock(DocumentImportTaskMapper.class);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
+        Mockito.when(itemMapper.selectForUpdate(itemId)).thenReturn(item);
+        Mockito.when(batchMapper.interruptOwnedRecoveryBatch(
+            Mockito.eq(batchId), Mockito.eq(recoveryToken),
+            Mockito.eq("document_import_recovery_failed"),
+            Mockito.anyString(), Mockito.any(Date.class)
+        )).thenReturn(1);
+        DocumentImportBatchCircuitBreaker circuitBreaker =
+            new DocumentImportBatchCircuitBreaker(
+                batchMapper, itemMapper, taskMapper);
+
+        Assert.assertTrue(circuitBreaker.interruptRecoveryBatch(
+            batchId,
+            recoveryToken,
+            new DocumentImportRecoveryException(java.util.List.of(itemId))
+        ));
+
+        org.mockito.InOrder order = Mockito.inOrder(batchMapper, itemMapper);
+        order.verify(batchMapper).selectForUpdate(batchId);
+        order.verify(itemMapper).countActiveItems(batchId);
+        order.verify(itemMapper).selectForUpdate(itemId);
+        order.verify(batchMapper).interruptOwnedRecoveryBatch(
+            Mockito.eq(batchId), Mockito.eq(recoveryToken),
+            Mockito.eq("document_import_recovery_failed"),
+            Mockito.anyString(), Mockito.any(Date.class));
+    }
+
+    /**
+     * 验证错误写回提交后出现的等价并发推进会阻止旧请求熔断整批。
+     */
+    @Test
+    public void shouldKeepRunningBatchWhenRecoveryItemAdvanced() {
+        BigInteger batchId = BigInteger.valueOf(44);
+        BigInteger itemId = BigInteger.valueOf(45);
+        String recoveryToken = "current-token";
+        DocumentImportBatch batch = runningAutoBatch(batchId);
+        batch.setRecoveryPending(true);
+        batch.setRecoveryToken(recoveryToken);
+        batch.setRecoveryLeaseUntil(
+            new Date(System.currentTimeMillis() + 60_000));
+        DocumentImportBatchItem item = new DocumentImportBatchItem();
+        item.setId(itemId);
+        item.setBatchId(batchId);
+        item.setStatus(DocumentImportBatchItemStatus.PENDING.name());
+        DocumentImportBatchMapper batchMapper =
+            Mockito.mock(DocumentImportBatchMapper.class);
+        DocumentImportBatchItemMapper itemMapper =
+            Mockito.mock(DocumentImportBatchItemMapper.class);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
+        Mockito.when(itemMapper.countActiveItems(batchId)).thenReturn(1);
+        DocumentImportBatchCircuitBreaker circuitBreaker =
+            new DocumentImportBatchCircuitBreaker(
+                batchMapper,
+                itemMapper,
+                Mockito.mock(DocumentImportTaskMapper.class));
+
+        Assert.assertFalse(circuitBreaker.interruptRecoveryBatch(
+            batchId,
+            recoveryToken,
+            new DocumentImportRecoveryException(java.util.List.of(itemId))
+        ));
+        Mockito.verify(batchMapper, Mockito.never())
+            .interruptOwnedRecoveryBatch(
+                Mockito.any(), Mockito.anyString(), Mockito.anyString(),
+                Mockito.anyString(), Mockito.any(Date.class));
+        Mockito.verify(itemMapper, Mockito.never()).selectForUpdate(itemId);
+    }
+
+    /**
+     * 验证失败快照外已有活跃项时，选择性恢复也不能熔断并发任务。
+     */
+    @Test
+    public void shouldKeepRunningBatchWhenAnotherItemAdvancedBeforeSnapshot() {
+        BigInteger batchId = BigInteger.valueOf(46);
+        BigInteger failedItemId = BigInteger.valueOf(47);
+        String recoveryToken = "current-token";
+        DocumentImportBatch batch = runningAutoBatch(batchId);
+        batch.setRecoveryPending(true);
+        batch.setRecoveryToken(recoveryToken);
+        batch.setRecoveryLeaseUntil(
+            new Date(System.currentTimeMillis() + 60_000));
+        DocumentImportBatchMapper batchMapper =
+            Mockito.mock(DocumentImportBatchMapper.class);
+        DocumentImportBatchItemMapper itemMapper =
+            Mockito.mock(DocumentImportBatchItemMapper.class);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
+        Mockito.when(itemMapper.countActiveItems(batchId)).thenReturn(1);
+        DocumentImportBatchCircuitBreaker circuitBreaker =
+            new DocumentImportBatchCircuitBreaker(
+                batchMapper,
+                itemMapper,
+                Mockito.mock(DocumentImportTaskMapper.class));
+
+        Assert.assertFalse(circuitBreaker.interruptRecoveryBatch(
+            batchId,
+            recoveryToken,
+            new DocumentImportRecoveryException(
+                java.util.List.of(failedItemId))
+        ));
+        Mockito.verify(itemMapper, Mockito.never())
+            .selectForUpdate(failedItemId);
+        Mockito.verify(batchMapper, Mockito.never())
+            .interruptOwnedRecoveryBatch(
+                Mockito.any(), Mockito.anyString(), Mockito.anyString(),
+                Mockito.anyString(), Mockito.any(Date.class));
+    }
+
     /**
      * 验证 SQL 语法错误保留为通用系统异常，避免伪装成数据库不可用。
      */
@@ -192,7 +325,7 @@ public class DocumentImportBatchCircuitBreakerTest {
         DocumentImportBatch batch = runningAutoBatch(batchId);
         DocumentImportBatchMapper batchMapper =
             Mockito.mock(DocumentImportBatchMapper.class);
-        Mockito.when(batchMapper.selectOneById(batchId)).thenReturn(batch);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
         Mockito.when(batchMapper.interruptRunningBatch(
             Mockito.eq(batchId),
             Mockito.eq("document_import_infrastructure_failure"),
@@ -222,7 +355,7 @@ public class DocumentImportBatchCircuitBreakerTest {
         DocumentImportBatch batch = runningAutoBatch(batchId);
         DocumentImportBatchMapper batchMapper =
             Mockito.mock(DocumentImportBatchMapper.class);
-        Mockito.when(batchMapper.selectOneById(batchId)).thenReturn(batch);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
         Mockito.when(batchMapper.interruptRunningBatch(
             Mockito.eq(batchId),
             Mockito.eq("database_unavailable"),
@@ -242,6 +375,36 @@ public class DocumentImportBatchCircuitBreakerTest {
         ));
     }
 
+    /**
+     * 验证没有文件重新排队时使用稳定恢复失败语义中断批次。
+     */
+    @Test
+    public void shouldExposeRecoveryFailureInsteadOfGenericInfrastructureError() {
+        BigInteger batchId = BigInteger.valueOf(71);
+        DocumentImportBatch batch = runningAutoBatch(batchId);
+        DocumentImportBatchMapper batchMapper =
+            Mockito.mock(DocumentImportBatchMapper.class);
+        Mockito.when(batchMapper.selectForUpdate(batchId)).thenReturn(batch);
+        Mockito.when(batchMapper.interruptRunningBatch(
+            Mockito.eq(batchId),
+            Mockito.eq("document_import_recovery_failed"),
+            Mockito.eq("未能重新排队任何失败文件，请查看文件错误后继续"),
+            Mockito.any(Date.class)
+        )).thenReturn(1);
+        DocumentImportBatchCircuitBreaker circuitBreaker =
+            new DocumentImportBatchCircuitBreaker(
+                batchMapper,
+                Mockito.mock(DocumentImportBatchItemMapper.class),
+                Mockito.mock(DocumentImportTaskMapper.class)
+            );
+
+        Assert.assertTrue(circuitBreaker.interruptBatch(
+            batchId,
+            new IllegalStateException(
+                "recovery failed", new DocumentImportRecoveryException())
+        ));
+    }
+
     /**
      * 验证恢复与任务熔断 SQL 都包含对应所有权围栏。
      *

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/documentimport/task/DocumentImportBatchTrackerTest.java

@@ -1,6 +1,8 @@
 package tech.easyflow.ai.documentimport.task;
 
 import org.junit.Test;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
 import tech.easyflow.ai.documentimport.DocumentImportBatchDtos;
 import tech.easyflow.ai.entity.DocumentImportBatch;
 import tech.easyflow.ai.entity.DocumentImportBatchItem;
@@ -13,6 +15,7 @@ import tech.easyflow.ai.mapper.DocumentImportBatchMapper;
 import tech.easyflow.ai.service.DocumentImportBatchItemService;
 import tech.easyflow.ai.service.DocumentImportBatchService;
 
+import java.lang.reflect.Method;
 import java.math.BigInteger;
 import java.util.Date;
 
@@ -25,6 +28,7 @@ import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -62,6 +66,39 @@ public class DocumentImportBatchTrackerTest {
         verify(batchService, never()).updateById(batch, false);
     }
 
+    /**
+     * 验证任务变更始终先锁批次，但只有自动批次受运行态门禁约束。
+     */
+    @Test
+    public void shouldAllowManualTaskAfterUploadBatchCompleted() {
+        BigInteger automaticBatchId = BigInteger.valueOf(101);
+        BigInteger manualBatchId = BigInteger.valueOf(102);
+        DocumentImportBatch automatic = new DocumentImportBatch();
+        automatic.setId(automaticBatchId);
+        automatic.setImportMode(DocumentImportMode.AUTO.name());
+        automatic.setStatus(DocumentImportBatchStatus.COMPLETED.name());
+        DocumentImportBatch manual = new DocumentImportBatch();
+        manual.setId(manualBatchId);
+        manual.setImportMode(DocumentImportMode.MANUAL.name());
+        manual.setStatus(DocumentImportBatchStatus.COMPLETED.name());
+        DocumentImportBatchMapper batchMapper =
+            mock(DocumentImportBatchMapper.class);
+        when(batchMapper.selectForUpdate(automaticBatchId))
+            .thenReturn(automatic);
+        when(batchMapper.selectForUpdate(manualBatchId)).thenReturn(manual);
+        DocumentImportBatchTracker tracker = new DocumentImportBatchTracker(
+            mock(DocumentImportBatchService.class),
+            mock(DocumentImportBatchItemService.class),
+            batchMapper,
+            mock(DocumentImportBatchItemMapper.class)
+        );
+
+        assertFalse(tracker.lockBatchForTaskMutation(automaticBatchId));
+        assertTrue(tracker.lockBatchForTaskMutation(manualBatchId));
+        verify(batchMapper).selectForUpdate(automaticBatchId);
+        verify(batchMapper).selectForUpdate(manualBatchId);
+    }
+
     /**
      * 验证兼容可重试计数与人工可继续的失败总数保持一致。
      */
@@ -111,6 +148,8 @@ public class DocumentImportBatchTrackerTest {
         item.setStatus(DocumentImportBatchItemStatus.FAILED.name());
         item.setRetryable(true);
         when(itemService.getById(item.getId())).thenReturn(item);
+        when(batchMapper.selectForUpdate(batch.getId())).thenReturn(batch);
+        when(itemMapper.selectForUpdate(item.getId())).thenReturn(item);
         when(itemMapper.transitionStatus(
             eq(item.getId()),
             eq(DocumentImportBatchItemStatus.FAILED.name()),
@@ -143,6 +182,14 @@ public class DocumentImportBatchTrackerTest {
             eq(-1),
             any(Date.class)
         );
+        org.mockito.InOrder lockOrder = inOrder(batchMapper, itemMapper);
+        lockOrder.verify(batchMapper).selectForUpdate(batch.getId());
+        lockOrder.verify(itemMapper).selectForUpdate(item.getId());
+        lockOrder.verify(itemMapper).transitionStatus(
+            eq(item.getId()), eq(DocumentImportBatchItemStatus.FAILED.name()),
+            eq(DocumentImportBatchItemStage.INDEX.name()),
+            eq(DocumentImportBatchItemStatus.PENDING.name()), eq(null), eq(null),
+            eq(false), eq(1), any(Date.class));
     }
 
     /**
@@ -167,6 +214,8 @@ public class DocumentImportBatchTrackerTest {
         item.setRetryable(true);
         BigInteger documentId = BigInteger.valueOf(99);
         when(itemService.getById(item.getId())).thenReturn(item);
+        when(batchMapper.selectForUpdate(batch.getId())).thenReturn(batch);
+        when(itemMapper.selectForUpdate(item.getId())).thenReturn(item);
         when(itemMapper.bindFailedDocument(
             eq(item.getId()), eq(documentId), any(Date.class)
         )).thenReturn(1);
@@ -184,6 +233,35 @@ public class DocumentImportBatchTrackerTest {
             anyInt(), anyInt(), anyInt(), any(Date.class));
     }
 
+    /**
+     * 验证失败项只能在运行批次内绑定恢复创建的文档。
+     */
+    @Test(expected = tech.easyflow.common.web.exceptions.BusinessException.class)
+    public void shouldRejectRecoveredDocumentOutsideRunningBatch() {
+        DocumentImportBatchService batchService =
+            mock(DocumentImportBatchService.class);
+        DocumentImportBatchItemService itemService =
+            mock(DocumentImportBatchItemService.class);
+        DocumentImportBatchMapper batchMapper =
+            mock(DocumentImportBatchMapper.class);
+        DocumentImportBatchItemMapper itemMapper =
+            mock(DocumentImportBatchItemMapper.class);
+        DocumentImportBatch batch = batch(
+            DocumentImportBatchStatus.PARTIAL_SUCCEEDED, 1);
+        DocumentImportBatchItem item = new DocumentImportBatchItem();
+        item.setId(BigInteger.TEN);
+        item.setBatchId(batch.getId());
+        item.setStatus(DocumentImportBatchItemStatus.FAILED.name());
+        when(itemService.getById(item.getId())).thenReturn(item);
+        when(batchMapper.selectForUpdate(batch.getId())).thenReturn(batch);
+        when(itemMapper.selectForUpdate(item.getId())).thenReturn(item);
+        DocumentImportBatchTracker tracker =
+            new DocumentImportBatchTracker(
+                batchService, itemService, batchMapper, itemMapper);
+
+        tracker.bindDocument(item.getId(), BigInteger.valueOf(99));
+    }
+
     /**
      * 验证迟到任务不能把已完成文件重新改为处理中。
      */
@@ -198,6 +276,9 @@ public class DocumentImportBatchTrackerTest {
         item.setBatchId(BigInteger.ONE);
         item.setStatus(DocumentImportBatchItemStatus.COMPLETED.name());
         when(itemService.getById(item.getId())).thenReturn(item);
+        DocumentImportBatch batch = batch(DocumentImportBatchStatus.RUNNING, 1);
+        when(batchMapper.selectForUpdate(batch.getId())).thenReturn(batch);
+        when(itemMapper.selectForUpdate(item.getId())).thenReturn(item);
 
         DocumentImportBatchTracker tracker =
             new DocumentImportBatchTracker(batchService, itemService, batchMapper, itemMapper);
@@ -210,6 +291,87 @@ public class DocumentImportBatchTrackerTest {
             any(), any(), any(), any(), any(), any(), anyBoolean(), anyInt(), any(Date.class));
     }
 
+    /**
+     * 验证批次中断后，已到达的工作线程不能再迁移文件项。
+     */
+    @Test
+    public void shouldFenceLateTransitionAfterBatchInterrupted() {
+        DocumentImportBatchService batchService = mock(DocumentImportBatchService.class);
+        DocumentImportBatchItemService itemService = mock(DocumentImportBatchItemService.class);
+        DocumentImportBatchMapper batchMapper = mock(DocumentImportBatchMapper.class);
+        DocumentImportBatchItemMapper itemMapper = mock(DocumentImportBatchItemMapper.class);
+        DocumentImportBatch batch = batch(DocumentImportBatchStatus.INTERRUPTED, 1);
+        DocumentImportBatchItem item = new DocumentImportBatchItem();
+        item.setId(BigInteger.TEN);
+        item.setBatchId(batch.getId());
+        item.setStatus(DocumentImportBatchItemStatus.PENDING.name());
+        when(itemService.getById(item.getId())).thenReturn(item);
+        when(batchMapper.selectForUpdate(batch.getId())).thenReturn(batch);
+        when(itemMapper.selectForUpdate(item.getId())).thenReturn(item);
+
+        DocumentImportBatchTracker tracker =
+            new DocumentImportBatchTracker(batchService, itemService, batchMapper, itemMapper);
+
+        assertFalse(tracker.updateItem(item.getId(),
+            DocumentImportBatchItemStage.PARSE,
+            DocumentImportBatchItemStatus.RUNNING,
+            null));
+        verify(itemMapper, never()).transitionStatus(
+            any(), any(), any(), any(), any(), any(), anyBoolean(), anyInt(), any(Date.class));
+    }
+
+    /**
+     * 验证恢复失败原因在提交后回调内仍使用独立事务持久化。
+     *
+     * @throws Exception 方法不存在时抛出
+     */
+    @Test
+    public void failedRetryErrorShouldUseIndependentTransaction()
+        throws Exception {
+        Method method = DocumentImportBatchTracker.class.getMethod(
+            "updateFailedRetryError",
+            BigInteger.class,
+            BigInteger.class,
+            String.class
+        );
+        Transactional transactional = method.getAnnotation(Transactional.class);
+
+        assertEquals(Propagation.REQUIRES_NEW, transactional.propagation());
+    }
+
+    /**
+     * 验证失败原因写回与等价并发推进在同一锁内完成判定。
+     */
+    @Test
+    public void failedRetryErrorShouldRecognizeConcurrentAdvance() {
+        DocumentImportBatchService batchService =
+            mock(DocumentImportBatchService.class);
+        DocumentImportBatchItemService itemService =
+            mock(DocumentImportBatchItemService.class);
+        DocumentImportBatchMapper batchMapper =
+            mock(DocumentImportBatchMapper.class);
+        DocumentImportBatchItemMapper itemMapper =
+            mock(DocumentImportBatchItemMapper.class);
+        DocumentImportBatch batch = batch(DocumentImportBatchStatus.RUNNING, 1);
+        DocumentImportBatchItem item = new DocumentImportBatchItem();
+        item.setId(BigInteger.TEN);
+        item.setBatchId(batch.getId());
+        item.setStatus(DocumentImportBatchItemStatus.PENDING.name());
+        when(itemService.getById(item.getId())).thenReturn(item);
+        when(batchMapper.selectForUpdate(batch.getId())).thenReturn(batch);
+        when(itemMapper.selectForUpdate(item.getId())).thenReturn(item);
+        DocumentImportBatchTracker tracker =
+            new DocumentImportBatchTracker(
+                batchService, itemService, batchMapper, itemMapper);
+
+        assertEquals(
+            DocumentImportBatchTracker.FailedRetryErrorOutcome.ALREADY_ADVANCED,
+            tracker.updateFailedRetryError(
+                item.getId(), batch.getId(), "状态已变化"));
+        verify(itemMapper, never()).updateFailedRetryError(
+            any(), any(), any(), any(Date.class));
+    }
+
     private DocumentImportBatch batch(DocumentImportBatchStatus status, int totalCount) {
         DocumentImportBatch batch = new DocumentImportBatch();
         batch.setId(BigInteger.ONE);

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/documentimport/task/DocumentImportRecoveryCoordinatorTest.java

@@ -0,0 +1,74 @@
+package tech.easyflow.ai.documentimport.task;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+import tech.easyflow.ai.entity.DocumentImportBatch;
+import tech.easyflow.ai.mapper.DocumentImportBatchMapper;
+
+import java.lang.reflect.Method;
+import java.math.BigInteger;
+import java.util.Date;
+
+/**
+ * {@link DocumentImportRecoveryCoordinator} 恢复令牌事务测试。
+ */
+public class DocumentImportRecoveryCoordinatorTest {
+
+    @Test
+    public void claimShouldReturnOnlyCurrentTokenBatch() {
+        DocumentImportBatchMapper mapper =
+            Mockito.mock(DocumentImportBatchMapper.class);
+        DocumentImportRecoveryCoordinator coordinator =
+            new DocumentImportRecoveryCoordinator(mapper);
+        BigInteger batchId = BigInteger.valueOf(81);
+        String token = "token";
+        Date claimedAt = new Date(1_000L);
+        Date leaseUntil = new Date(121_000L);
+        DocumentImportBatch batch = new DocumentImportBatch();
+        batch.setId(batchId);
+        Mockito.when(mapper.claimRecoveryPending(
+            batchId, token, leaseUntil, claimedAt)).thenReturn(1);
+        Mockito.when(mapper.selectClaimedRecovery(batchId, token))
+            .thenReturn(batch);
+
+        Assert.assertSame(batch, coordinator.claim(
+            batchId, token, leaseUntil, claimedAt));
+    }
+
+    @Test
+    public void claimShouldSkipReadWhenTokenWasNotAcquired() {
+        DocumentImportBatchMapper mapper =
+            Mockito.mock(DocumentImportBatchMapper.class);
+        DocumentImportRecoveryCoordinator coordinator =
+            new DocumentImportRecoveryCoordinator(mapper);
+
+        Assert.assertNull(coordinator.claim(
+            BigInteger.ONE, "token", new Date(2_000L), new Date(1_000L)));
+        Mockito.verify(mapper, Mockito.never())
+            .selectClaimedRecovery(Mockito.any(), Mockito.anyString());
+    }
+
+    @Test
+    public void tokenMutationsShouldAlwaysUseIndependentTransactions()
+        throws Exception {
+        assertRequiresNew("claim", BigInteger.class, String.class,
+            Date.class, Date.class);
+        assertRequiresNew("renew", BigInteger.class, String.class,
+            Date.class, Date.class);
+        assertRequiresNew("finalizeRecovery", BigInteger.class,
+            String.class, Date.class);
+    }
+
+    private void assertRequiresNew(String methodName, Class<?>... parameterTypes)
+        throws Exception {
+        Method method = DocumentImportRecoveryCoordinator.class.getMethod(
+            methodName, parameterTypes);
+        Transactional transactional = method.getAnnotation(Transactional.class);
+        Assert.assertNotNull(transactional);
+        Assert.assertEquals(Propagation.REQUIRES_NEW,
+            transactional.propagation());
+    }
+}

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/easyagentsflow/knowledge/KnowledgeProviderImplTest.java

@@ -2,6 +2,7 @@ package tech.easyflow.ai.easyagentsflow.knowledge;
 
 import com.easyagents.core.document.Document;
 import com.easyagents.flow.core.knowledge.Knowledge;
+import com.easyagents.flow.core.knowledge.KnowledgeSearchRequest;
 import com.easyagents.flow.core.node.KnowledgeNode;
 import org.junit.Assert;
 import org.junit.Test;
@@ -13,6 +14,7 @@ import java.math.BigInteger;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
@@ -35,7 +37,9 @@ public class KnowledgeProviderImplTest {
         document.setId(BigInteger.valueOf(42));
         document.setTitle("文档标题");
         document.setContent("文档内容");
+        document.setScore(0.9D);
         document.addMetadata("documentId", BigInteger.valueOf(420));
+        document.addMetadata("sourceFileName", "元数据标题");
         document.addMetadata("legacyKey", "legacy-value");
 
         DocumentCollectionService service =
@@ -58,6 +62,7 @@ public class KnowledgeProviderImplTest {
         Assert.assertEquals("文档内容", item.get("content"));
         Assert.assertEquals(BigInteger.valueOf(420), item.get("documentId"));
         Assert.assertEquals(BigInteger.valueOf(88), item.get("knowledgeId"));
+        Assert.assertNull(item.get("vectorScore"));
         Assert.assertEquals(42L, ((Number) item.get("id")).longValue());
         Assert.assertTrue(item.containsKey("metadataMap"));
         Assert.assertEquals(
@@ -65,6 +70,112 @@ public class KnowledgeProviderImplTest {
                 ((Map<?, ?>) item.get("metadataMap")).get("legacyKey"));
     }
 
+    /**
+     * 验证历史检索结果缺少顶层标题时，会从保留的来源元数据回填。
+     *
+     * @throws Exception 注入测试依赖失败时抛出
+     */
+    @Test
+    public void shouldResolveTitleFromSourceMetadataWhenTitleMissing()
+            throws Exception {
+        Document document = new Document();
+        document.setId(BigInteger.valueOf(43));
+        document.setTitle("  ");
+        document.setContent("文档内容");
+        document.addMetadata("sourceFileName", "来源文档.pdf");
+        document.addMetadata("question", "不应优先使用的问题");
+
+        Document faqDocument = new Document();
+        faqDocument.setId(BigInteger.valueOf(44));
+        faqDocument.setContent("FAQ 内容");
+        faqDocument.addMetadata("question", "如何申请账号？");
+
+        DocumentCollectionService service =
+                mock(DocumentCollectionService.class);
+        when(service.search(any(KnowledgeRetrievalRequest.class)))
+                .thenReturn(List.of(document, faqDocument));
+        KnowledgeProviderImpl provider = new KnowledgeProviderImpl();
+        setField(provider, "documentCollectionService", service);
+
+        KnowledgeNode knowledgeNode = new KnowledgeNode();
+        knowledgeNode.setId("knowledge-node");
+        List<Map<String, Object>> result = provider
+                .getKnowledge(BigInteger.valueOf(88))
+                .search("问题", 10, knowledgeNode, null);
+
+        Assert.assertEquals(2, result.size());
+        Assert.assertEquals("来源文档.pdf", result.get(0).get("title"));
+        Assert.assertEquals("如何申请账号？", result.get(1).get("title"));
+        Assert.assertEquals(
+                "来源文档.pdf",
+                ((Map<?, ?>) result.get(0).get("metadataMap"))
+                        .get("sourceFileName"));
+        Assert.assertEquals(
+                "如何申请账号？",
+                ((Map<?, ?>) result.get(1).get("metadataMap"))
+                        .get("question"));
+    }
+
+    @Test
+    public void shouldKeepLegacyOutputContractForMultiKnowledge()
+            throws Exception {
+        Document document = new Document();
+        document.setId(BigInteger.valueOf(45));
+        document.setTitle("来源文档");
+        document.setContent("跨库内容");
+        document.setScore(0.923456D);
+        document.addMetadata("knowledgeId", BigInteger.valueOf(88));
+        document.addMetadata("knowledgeName", "业务知识库");
+        document.addMetadata("documentId", BigInteger.valueOf(450));
+        document.addMetadata("chunkId", BigInteger.valueOf(45));
+        document.addMetadata("vectorScore", 0.923456D);
+        document.addMetadata("globalRank", 1);
+        document.addMetadata("sourceReferences", List.of(Map.of(
+                "knowledgeId", BigInteger.valueOf(88),
+                "documentId", BigInteger.valueOf(450),
+                "chunkId", BigInteger.valueOf(45))));
+
+        MultiKnowledgeRetrievalResult retrievalResult =
+                new MultiKnowledgeRetrievalResult(
+                        List.of(document),
+                        Map.of("requestedSourceCount", 2, "resultCount", 1),
+                        List.of(Map.of("status", "SUCCEEDED")));
+        WorkflowMultiKnowledgeRetrievalService multiService =
+                mock(WorkflowMultiKnowledgeRetrievalService.class);
+        when(multiService.search(
+                any(), any(), any(Integer.class), any(), any()))
+                .thenReturn(retrievalResult);
+
+        KnowledgeProviderImpl provider = new KnowledgeProviderImpl();
+        setField(provider, "documentCollectionService",
+                mock(DocumentCollectionService.class));
+        setField(provider, "multiKnowledgeRetrievalService", multiService);
+        KnowledgeNode node = new KnowledgeNode();
+        node.setId("knowledge-node");
+        node.setKnowledgeIds(List.of("88", "99"));
+        node.setRetrievalMode("VECTOR");
+
+        Map<String, Object> output = provider.search(
+                new KnowledgeSearchRequest(
+                        node.getKnowledgeIds(),
+                        "问题",
+                        3,
+                        "VECTOR",
+                        node,
+                        null));
+
+        Assert.assertEquals(Set.of("documents"), output.keySet());
+        List<?> documents = (List<?>) output.get("documents");
+        Map<?, ?> item = (Map<?, ?>) documents.get(0);
+        Assert.assertEquals("来源文档", item.get("title"));
+        Assert.assertEquals("跨库内容", item.get("content"));
+        Assert.assertEquals(BigInteger.valueOf(450), item.get("documentId"));
+        Assert.assertEquals(BigInteger.valueOf(88), item.get("knowledgeId"));
+        Assert.assertFalse(item.containsKey("knowledgeName"));
+        Assert.assertFalse(item.containsKey("vectorScore"));
+        Assert.assertFalse(item.containsKey("globalRank"));
+    }
+
     /**
      * 注入测试依赖。
      *