fix(embedding): 传递本地索引限制并冻结推理配置

backend/app/services/media_notes.py

@@ -41,6 +41,9 @@ async def create_transcript_note(job_id, options):
                 lines.append("")
         else:
             lines.append(job.text or "")
+        if job.local_only:
+            # Persist the indexing policy in the Vault, including later rebuilds.
+            lines = ["---", "embedding_local_only: true", "---", "", *lines]
         try:
             note = await note_service.create_note(title=title, markdown="\n".join(lines), folder=options.folder, tags=["转写"])
         except ApiError as exc:

backend/app/services/note_service.py

@@ -82,10 +82,10 @@ async def prepare_note_index(parsed: ParsedNote, *, strict=False) -> PreparedInd
     texts = [block.content for block in parsed.blocks]
     if isinstance(embedding, LocalEmbedding):
         # One routed invocation: API first, validated local fallback. No hash vectors.
-        remote = await routed_vectors.embed_remote(texts, accept_local=True, strict=strict)
+        remote = await routed_vectors.embed_remote(texts, accept_local=True, strict=strict, local_only=parsed.embedding_local_only)
         return [], remote
     vectors = await embedding.embed_documents(texts)
-    remote = await routed_vectors.embed_remote(texts)
+    remote = await routed_vectors.embed_remote(texts, local_only=parsed.embedding_local_only)
     return vectors, remote