Update retrieval, rerank, and indexing changes

modules/story-summary/vector/pipeline/chunk-builder.js

@@ -340,15 +340,15 @@ export async function syncOnMessageSwiped(chatId, lastFloor) {
  * 新消息后同步：删除 + 重建最后楼层
  */
 export async function syncOnMessageReceived(chatId, lastFloor, message, vectorConfig, onL0Complete) {
-    if (!chatId || lastFloor < 0 || !message) return;
-    if (!vectorConfig?.enabled) return;
+    if (!chatId || lastFloor < 0 || !message) return { built: 0, chunks: [] };
+    if (!vectorConfig?.enabled) return { built: 0, chunks: [] };
 
     // 删除该楼层旧的
     await deleteChunksAtFloor(chatId, lastFloor);
 
     // 重建
     const chunks = chunkMessage(lastFloor, message);
-    if (chunks.length === 0) return;
+    if (chunks.length === 0) return { built: 0, chunks: [] };
 
     await saveChunks(chatId, chunks);
 
@@ -356,12 +356,14 @@ export async function syncOnMessageReceived(chatId, lastFloor, message, vectorCo
     const fingerprint = getEngineFingerprint(vectorConfig);
     const texts = chunks.map(c => c.text);
 
+    let vectorized = false;
     try {
         const vectors = await embed(texts, vectorConfig);
         const items = chunks.map((c, i) => ({ chunkId: c.chunkId, vector: vectors[i] }));
         await saveChunkVectors(chatId, items, fingerprint);
         await updateMeta(chatId, { lastChunkFloor: lastFloor });
 
+        vectorized = true;
         xbLog.info(MODULE_ID, `消息同步：重建 floor ${lastFloor}，${chunks.length} 个 chunk`);
     } catch (e) {
         xbLog.error(MODULE_ID, `消息同步失败：floor ${lastFloor}`, e);
@@ -384,4 +386,6 @@ export async function syncOnMessageReceived(chatId, lastFloor, message, vectorCo
             xbLog.warn(MODULE_ID, `Atom 提取失败: floor ${lastFloor}`, e);
         }
     }
+
+    return { built: vectorized ? chunks.length : 0, chunks };
 }