feat: 接入一库一工具知识检索

- 编译知识库英文运行名、描述、检索配置和独立 Registration

- 统一最终分数阈值并保持模型上下文、检索事件与引用一致

- 完善 AG-UI 知识库检索运行态与完成态展示

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

@@ -187,7 +187,7 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
         RagScoreNormalizer.normalize(searchDocuments, retrievalMode, reranked);
         List<Document> formattedDocuments = formatDocuments(
             searchDocuments,
-            shouldApplyMinSimilarityFilter(retrievalMode, reranked),
+            true,
             minSimilarity,
             docRecallMaxNum
         );
@@ -396,10 +396,6 @@ public class DocumentCollectionServiceImpl extends ServiceImpl<DocumentCollectio
         return modelRerank.toRerankModel();
     }
 
-    private boolean shouldApplyMinSimilarityFilter(RetrievalMode retrievalMode, boolean reranked) {
-        return !reranked && retrievalMode == RetrievalMode.VECTOR;
-    }
-
     /**
      * 解析本次查询使用的召回上限，优先采用请求参数，其次回退到知识库默认配置。
      *

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

@@ -32,6 +32,28 @@ import static tech.easyflow.ai.entity.DocumentCollection.KEY_SIMILARITY_THRESHOL
  */
 public class DocumentCollectionServiceImplTest {
 
+    /**
+     * 验证最终相关度阈值会过滤所有已统一到零到一范围的检索结果。
+     */
+    @Test
+    public void formatDocumentsShouldApplyFinalScoreThreshold() {
+        Document lowScore = buildHit(BigInteger.ONE, 0.49D);
+        Document thresholdScore = buildHit(BigInteger.TWO, 0.5D);
+        Document highScore = buildHit(BigInteger.valueOf(3), 0.9D);
+        DocumentCollectionServiceImpl service = new DocumentCollectionServiceImpl();
+
+        List<Document> result = service.formatDocuments(
+            List.of(lowScore, thresholdScore, highScore),
+            true,
+            0.5F,
+            5
+        );
+
+        Assert.assertEquals(2, result.size());
+        Assert.assertEquals(highScore.getId(), result.get(0).getId());
+        Assert.assertEquals(thresholdScore.getId(), result.get(1).getId());
+    }
+
     /**
      * 验证检索结果会在重排前过滤掉未完成文档，避免高分进行中文档挤占最终名额。
      *