feat: organize tools and enable qwen realtime calls

backend/services/client_tools.py

@@ -44,6 +44,8 @@ class _DeferredClientToolResult:
 
 
 class ClientToolPort(Protocol):
+    def supports(self, function_name: str) -> bool: ...
+
     async def call(
         self,
         function_name: str,
@@ -65,6 +67,13 @@ class ClientToolBroker(FrameProcessor):
         self._deferred_results: deque[_DeferredClientToolResult] = deque()
         self._interrupt_handler: Callable[[], Awaitable[None]] | None = None
         self._closed_message: str | None = None
+        self._capabilities: frozenset[str] | None = None
+
+    def set_capabilities(self, names: set[str] | None) -> None:
+        self._capabilities = None if names is None else frozenset(names)
+
+    def supports(self, function_name: str) -> bool:
+        return self._capabilities is None or function_name in self._capabilities
 
     def set_interrupt_handler(
         self,
@@ -85,6 +94,8 @@ class ClientToolBroker(FrameProcessor):
     ) -> dict[str, Any]:
         if self._closed_message is not None:
             raise ClientToolError(self._closed_message)
+        if not self.supports(function_name):
+            raise ClientToolError(f"客户端未注册工具: {function_name}")
 
         tool_call_id = f"client_{uuid4().hex}"
         message = {