Clean migrate code in init db

api/init_db.py

@@ -4,7 +4,6 @@ import argparse
 import os
 import sys
 from contextlib import contextmanager
-from sqlalchemy import inspect, text
 
 # 添加路径
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
@@ -57,39 +56,6 @@ def init_db():
     print("✅ 数据库表创建完成")
 
 
-def migrate_db_schema():
-    """对现有数据库执行非破坏性 schema 迁移。"""
-    inspector = inspect(engine)
-    table_names = set(inspector.get_table_names())
-    if "assistants" not in table_names:
-        print("ℹ️ assistants 表不存在，跳过增量迁移")
-        return
-
-    columns = {col["name"] for col in inspector.get_columns("assistants")}
-    alter_statements = []
-    if "generated_opener_enabled" not in columns:
-        alter_statements.append(
-            "ALTER TABLE assistants ADD COLUMN generated_opener_enabled BOOLEAN DEFAULT 0"
-        )
-    if "first_turn_mode" not in columns:
-        alter_statements.append(
-            "ALTER TABLE assistants ADD COLUMN first_turn_mode VARCHAR(32) DEFAULT 'bot_first'"
-        )
-    if "bot_cannot_be_interrupted" not in columns:
-        alter_statements.append(
-            "ALTER TABLE assistants ADD COLUMN bot_cannot_be_interrupted BOOLEAN DEFAULT 0"
-        )
-
-    if not alter_statements:
-        print("✅ Schema 迁移检查完成（无需变更）")
-        return
-
-    with engine.begin() as conn:
-        for stmt in alter_statements:
-            conn.execute(text(stmt))
-    print(f"✅ Schema 迁移完成（应用 {len(alter_statements)} 条 ALTER）")
-
-
 def rebuild_vector_store(reset_doc_status: bool = True):
     """重建知识库向量集合（按 DB 中的 KB 列表重建 collection 壳）。"""
     from app.vector_store import vector_store
@@ -400,7 +366,7 @@ if __name__ == "__main__":
     if args.rebuild_db:
         init_db()
     else:
-        migrate_db_schema()
+        print("ℹ️ 跳过数据库结构变更（未指定 --rebuild-db）")
 
     if args.recreate_tool_db:
         init_default_tools(recreate=True)