fix: 支持模型异常后继续文档对话

- 将本轮文档上下文纳入可持久化的 Agent 用户消息

=- 在异常提示中提供请重试动作并自动发送继续

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

@@ -423,7 +423,7 @@ public class AgentRunService {
             chatContext.getExt().put(DOCUMENT_CONTEXT_TOKEN_ESTIMATE_EXT_KEY,
                     documentContext.tokenEstimate());
             String runtimePrompt = effectivePrompt(prompt, !boundDocuments.isEmpty(), !boundMedia.isEmpty());
-            AgentMessage userMessage = buildAgentMessage(runtimePrompt, boundMedia);
+            AgentMessage userMessage = buildAgentMessage(runtimePrompt, boundMedia, documentContext);
             threadPoolTaskExecutor.execute(() -> startRuntime(
                     agent, userMessage, documentContext, account, requestId, traceId, runtimeSessionId,
                     assistantCode, chatContext, runOutput, persistChatlog, runtimeSessionStore, lockHandle));
@@ -646,24 +646,6 @@ public class AgentRunService {
         return agentDocumentService.bindDraft(documentUploads);
     }
 
-    /**
-     * 将本轮文档正文追加到临时运行定义的系统提示词中。
-     *
-     * <p>正文只存在于本轮模型调用定义，不写入 chatlog 或 AgentScope 消息记忆。</p>
-     *
-     * @param bundle 临时运行时编译结果
-     * @param documentContext 本轮文档上下文
-     */
-    private void appendDocumentContext(AgentRuntimeBundle bundle, AgentDocumentContext documentContext) {
-        if (bundle == null || bundle.getDefinition() == null
-                || documentContext == null || documentContext.text().isBlank()) {
-            return;
-        }
-        String current = bundle.getDefinition().getSystemPrompt();
-        bundle.getDefinition().setSystemPrompt(
-                (current == null ? "" : current) + documentContext.text());
-    }
-
     /**
      * 为仅附件输入生成可持久化的最小用户意图。
      *
@@ -1206,7 +1188,6 @@ public class AgentRunService {
             }
             AgentRuntimeContext runtimeContext = buildAgentRuntimeContext(chatContext, traceId, runtimeSessionId);
             AgentRuntimeBundle bundle = agentRuntimeCompiler.compile(agent, runtimeContext, !persistChatlog);
-            appendDocumentContext(bundle, documentContext);
             AgentRuntime runtime = agentRuntimeFactory.create();
             // 会话初始化请求
             AgentInitRequest request = new AgentInitRequest();
@@ -2340,13 +2321,30 @@ public class AgentRunService {
         return message;
     }
 
-    private AgentMessage buildAgentMessage(String prompt, List<AgentBoundMedia> media) {
+    /**
+     * 构建发送给 AgentScope 的用户消息。
+     *
+     * <p>文档正文属于用户提供的不可信材料，作为用户内容块进入本轮模型调用和 AgentScope
+     * memory。聊天记录仍单独保存原始输入与附件引用，页面不会展示正文内容块。</p>
+     *
+     * @param prompt 用户输入
+     * @param media 图片附件
+     * @param documentContext 本轮选中的文档上下文
+     * @return 可持久化的运行时用户消息
+     */
+    private AgentMessage buildAgentMessage(String prompt,
+                                           List<AgentBoundMedia> media,
+                                           AgentDocumentContext documentContext) {
         AgentMessage message = new AgentMessage();
         message.setRole(AgentMessageRole.USER);
         List<com.easyagents.agent.runtime.message.AgentContentBlock> blocks = new ArrayList<>();
         if (prompt != null && !prompt.isBlank()) {
             blocks.add(new AgentTextBlock(prompt));
         }
+        if (documentContext != null && documentContext.text() != null
+                && !documentContext.text().isBlank()) {
+            blocks.add(new AgentTextBlock(documentContext.text()));
+        }
         if (media != null) {
             for (AgentBoundMedia item : media) {
                 AgentMediaBlock image = new AgentMediaBlock("image");

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

@@ -10,6 +10,7 @@ import com.easyagents.agent.runtime.event.AgentRuntimeEventType;
 import com.easyagents.agent.runtime.message.AgentKnowledgeReference;
 import com.easyagents.agent.runtime.message.AgentMessage;
 import com.easyagents.agent.runtime.message.AgentMessageRole;
+import com.easyagents.agent.runtime.message.AgentTextBlock;
 import com.easyagents.agent.runtime.persistence.session.AgentSessionStore;
 import com.easyagents.agent.runtime.persistence.session.memory.InMemoryAgentSessionStore;
 import org.junit.Assert;
@@ -69,6 +70,28 @@ import java.util.concurrent.atomic.AtomicBoolean;
  */
 public class AgentRunServiceDraftAndHitlTest {
 
+    /**
+     * 验证文档上下文随用户消息进入可持久化 memory，同时保持独立内容块边界。
+     *
+     * @throws Exception 反射调用失败时抛出
+     */
+    @Test
+    public void buildAgentMessageShouldIncludeDocumentContext() throws Exception {
+        AgentRunService service = new AgentRunService();
+        AgentDocumentContext documentContext = new AgentDocumentContext(
+                "\n<<<DOCUMENT name=\"demo.docx\">>>\n正文\n<<<END_DOCUMENT>>>", 8, List.of());
+
+        AgentMessage message = invoke(service, "buildAgentMessage",
+                new Class<?>[]{String.class, List.class, AgentDocumentContext.class},
+                "请介绍文档", List.of(), documentContext);
+
+        Assert.assertEquals(2, message.getContentBlocks().size());
+        Assert.assertEquals("请介绍文档",
+                ((AgentTextBlock) message.getContentBlocks().get(0)).getText());
+        Assert.assertEquals(documentContext.text(),
+                ((AgentTextBlock) message.getContentBlocks().get(1)).getText());
+    }
+
     /**
      * 创建用于 owner 恢复测试的运行描述。
      *