fix(host): 后台入库任务禁硬编码库名，改经 get_module_dbname 映射

ingest_doc 是 background_reco 后台任务(无 request/env)，原用 db.sqlorContext('rag') 6 处。
在 ragserver 上库名恰为 rag 所以能跑，接入 pipeline-app(库名 pipeline)后
sqlorFactory 报 NoneType.get → 入库全程失败，status 永久 pending、向量丢失。
改为函数开头 _dbname = get_module_dbname('rag') 统一映射。

wwwroot/knowledge_bases_list/upload_file.dspy

@@ -47,11 +47,14 @@ ext_l = ext.lower()
 # ============================================================
 async def ingest_doc(doc_id, kb_id, file_name, ext_l, real_path):
     db = DBPools()
+    # 库名必须经宿主的 get_module_dbname 映射（ragserver→'rag'，pipeline-app→'pipeline'）
+    # 后台任务无 request/env，用注入的全局函数解析；禁硬编码库名
+    _dbname = get_module_dbname('rag')
 
     # 读知识库向量引擎：bge-m3=文本(走 /txte)，clip-vith14=多媒体(走 /mme)
     emb_engine = 'clip-vith14'
     try:
-        async with db.sqlorContext('rag') as sor:
+        async with db.sqlorContext(_dbname) as sor:
             krecs = await sor.sqlExe("SELECT embedding_engine FROM rag_knowledge_bases WHERE id=${kb_id}$", {"kb_id": kb_id})
             if krecs:
                 emb_engine = (getattr(krecs[0], 'embedding_engine', '') or 'clip-vith14').strip()
@@ -116,7 +119,7 @@ async def ingest_doc(doc_id, kb_id, file_name, ext_l, real_path):
         # --- 文本知识库不支持媒体文件 ---
         if is_text and (ext_l in image_exts or ext_l in audio_exts or ext_l in video_exts):
             try:
-                async with db.sqlorContext('rag') as sor:
+                async with db.sqlorContext(_dbname) as sor:
                     await sor.sqlExe(
                         "UPDATE rag_documents SET status='failed', metadata=${meta}$, updated_at=NOW() WHERE id=${id}$",
                         {"id": doc_id, "meta": json.dumps({"error": "文本知识库不支持媒体文件，请上传文本类文件(txt/md/pdf/docx等)或改用多媒体知识库"}, ensure_ascii=False)})
@@ -193,7 +196,7 @@ async def ingest_doc(doc_id, kb_id, file_name, ext_l, real_path):
                             chunk_meta = {"start_time": 0}
                             if frame_bboxes:
                                 chunk_meta["bboxes"] = frame_bboxes
-                            async with db.sqlorContext('rag') as sor:
+                            async with db.sqlorContext(_dbname) as sor:
                                 await sor.sqlExe(
                                     "INSERT INTO rag_document_chunks (id, doc_id, kb_id, chunk_index, content, vector_id, metadata, created_at) "
                                     "VALUES (${id}$, ${doc_id}$, ${kb_id}$, 0, ${content}$, ${vid}$, ${meta}$, NOW())",
@@ -273,7 +276,7 @@ async def ingest_doc(doc_id, kb_id, file_name, ext_l, real_path):
                     except:
                         pass
 
-                async with db.sqlorContext('rag') as sor:
+                async with db.sqlorContext(_dbname) as sor:
                     for i, chunk_text in enumerate(chunks):
                         vid = vector_ids[i] if i < len(vector_ids) else ''
                         await sor.sqlExe(
@@ -284,7 +287,7 @@ async def ingest_doc(doc_id, kb_id, file_name, ext_l, real_path):
                 chunks_n = len(chunks)
     except Exception as e:
         try:
-            async with db.sqlorContext('rag') as sor:
+            async with db.sqlorContext(_dbname) as sor:
                 await sor.sqlExe(
                     "UPDATE rag_documents SET status='failed', metadata=${meta}$, updated_at=NOW() WHERE id=${id}$",
                     {"id": doc_id, "meta": json.dumps({"error": str(e)[:300]}, ensure_ascii=False)})
@@ -294,7 +297,7 @@ async def ingest_doc(doc_id, kb_id, file_name, ext_l, real_path):
     # --- finalize: mark document done + update KB chunk counts ---
     meta_json = json.dumps(meta_parts, ensure_ascii=False)
     try:
-        async with db.sqlorContext('rag') as sor:
+        async with db.sqlorContext(_dbname) as sor:
             await sor.sqlExe(
                 "UPDATE rag_documents SET status='done', chunk_count=${chunks}$, metadata=${meta}$, updated_at=NOW() WHERE id=${id}$",
                 {"id": doc_id, "chunks": chunks_n, "meta": meta_json})