feat:新增投顾agent和nl2sqlagent

nl2sql/operations.py

@@ -0,0 +1,23 @@
+"""NL2SQL Milvus 运维操作。"""
+from __future__ import annotations
+
+from nl2sql.milvus_collections import NL2SQL_COLLECTION
+
+
+INVALID_VECTOR_FILTER = "is_valid == false or is_deprecated == true"
+
+
+async def cleanup_invalid_vectors(milvus_client) -> int:
+    """删除无效或已废弃的元数据向量，并返回删除前的数量。"""
+    rows = await milvus_client.query(
+        collection_name=NL2SQL_COLLECTION,
+        filter=INVALID_VECTOR_FILTER,
+        output_fields=["id"],
+    )
+    count = len(rows or [])
+    if count:
+        await milvus_client.delete(
+            collection_name=NL2SQL_COLLECTION,
+            filter=INVALID_VECTOR_FILTER,
+        )
+    return count