chore: update gitignore; feat: 新增customer_agent业务模块与api路由

rag/events.py

@@ -0,0 +1,19 @@
+"""Knowledge-base events published by the operations workflow."""
+from __future__ import annotations
+
+
+KNOWLEDGE_UPDATE_EVENT = "event:knowledge_update"
+
+
+async def publish_knowledge_update(
+    publisher, *, doc_id: str, collection_name: str, chunk_count: int, action: str | None = None
+) -> None:
+    """Publish only after the caller's atomic Milvus write has succeeded."""
+    payload = {
+        "doc_id": doc_id,
+        "collection_name": collection_name,
+        "chunk_count": chunk_count,
+    }
+    if action is not None:
+        payload["action"] = action
+    await publisher(KNOWLEDGE_UPDATE_EVENT, payload)