Add sync_default_tools function to manage system-provided tools

- Introduce a new `sync_default_tools` function in `session.py` to ensure essential reusable tools are created without overwriting existing edits.
- Update the `lifespan` context manager in `app.py` to call `sync_default_tools`, enhancing the initialization process for the application.
- This change improves the management of default tools within the system, ensuring they are available for use while preserving user modifications.

backend/app.py

@@ -16,7 +16,7 @@ from contextlib import asynccontextmanager
 
 import settings
 import uvicorn
-from db.session import sync_interface_definitions
+from db.session import sync_default_tools, sync_interface_definitions
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
@@ -36,6 +36,7 @@ from routes import (
 @asynccontextmanager
 async def lifespan(_app: FastAPI):
     await sync_interface_definitions()
+    await sync_default_tools()
     yield
 
 

backend/db/session.py

@@ -45,3 +45,39 @@ async def sync_interface_definitions() -> None:
                     "field_schema": json.dumps({"fields": definition["fields"]}),
                 },
             )
+
+
+async def sync_default_tools() -> None:
+    """Ensure system-provided reusable tools exist without overwriting edits."""
+    async with engine.begin() as conn:
+        await conn.execute(
+            text(
+                "INSERT INTO tools "
+                "(id, name, function_name, type, description, definition, secrets, status) "
+                "VALUES ("
+                ":id, :name, :function_name, :type, :description, "
+                "CAST(:definition AS jsonb), CAST(:secrets AS jsonb), :status"
+                ") "
+                "ON CONFLICT (function_name) DO NOTHING"
+            ),
+            {
+                "id": "tool_end_call_default",
+                "name": "结束对话",
+                "function_name": "end_call",
+                "type": "end_call",
+                "description": "当用户明确要求结束对话，或任务已完成时调用。",
+                "definition": json.dumps(
+                    {
+                        "schema_version": 1,
+                        "type": "end_call",
+                        "config": {
+                            "message_type": "none",
+                            "custom_message": "",
+                            "capture_reason": True,
+                        },
+                    }
+                ),
+                "secrets": "{}",
+                "status": "active",
+            },
+        )