fix: emit Lingma tool approve/invoke roundtrip

Forward tool/call/sync and tool/invoke events to Lingma with auto-approve and invokeResult so tool calls can complete end-to-end.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_tool_call_bridge.py

@@ -798,7 +798,6 @@ class SessionCacheToolFingerprintTests(unittest.TestCase):
                 "result": {"hits": 3},
             }
         )
-
         self.assertEqual(
             event,
             {
@@ -808,3 +807,97 @@ class SessionCacheToolFingerprintTests(unittest.TestCase):
                 "result": {"hits": 3},
             },
         )
+
+
+    def test_tool_sync_triggers_approve_and_invoke_result_requests(self) -> None:
+        from app.lingma_client import LspWsRpcClient
+
+        class _WsStub:
+            def __init__(self) -> None:
+                self.frames: list[bytes] = []
+
+            async def send(self, data: bytes) -> None:
+                self.frames.append(data)
+
+        def _decode(frame: bytes) -> dict:
+            body = frame.split(b"\r\n\r\n", 1)[1]
+            return json.loads(body.decode("utf-8"))
+
+        ws = _WsStub()
+        rpc = LspWsRpcClient(ws)
+
+        async def run() -> None:
+            rpc.create_stream("req-1")
+            await rpc._handle_server_message(
+                {
+                    "jsonrpc": "2.0",
+                    "method": "tool/call/sync",
+                    "params": {
+                        "sessionId": "sess-1",
+                        "requestId": "req-1",
+                        "toolCallId": "call-1",
+                        "name": "run_in_terminal",
+                        "parameters": {"command": "pwd"},
+                    },
+                }
+            )
+
+            decoded = [_decode(frame) for frame in ws.frames]
+            methods = [item.get("method") for item in decoded]
+            self.assertIn("tool/call/approve", methods)
+            self.assertIn("tool/invokeResult", methods)
+
+            approve = next(item for item in decoded if item.get("method") == "tool/call/approve")
+            self.assertEqual(
+                approve["params"],
+                {
+                    "type": "tool_call",
+                    "sessionId": "sess-1",
+                    "requestId": "req-1",
+                    "toolCallId": "call-1",
+                    "approval": True,
+                },
+            )
+
+            invoke_result = next(item for item in decoded if item.get("method") == "tool/invokeResult")
+            self.assertEqual(invoke_result["params"]["toolCallId"], "call-1")
+            self.assertEqual(invoke_result["params"]["name"], "run_in_terminal")
+            self.assertTrue(invoke_result["params"]["success"])
+            self.assertEqual(invoke_result["params"]["errorMessage"], "")
+
+        import asyncio
+
+        asyncio.run(run())
+
+    def test_tool_sync_does_not_emit_roundtrip_without_request_id(self) -> None:
+        from app.lingma_client import LspWsRpcClient
+
+        class _WsStub:
+            def __init__(self) -> None:
+                self.frames: list[bytes] = []
+
+            async def send(self, data: bytes) -> None:
+                self.frames.append(data)
+
+        ws = _WsStub()
+        rpc = LspWsRpcClient(ws)
+
+        async def run() -> None:
+            rpc.create_stream("req-1")
+            await rpc._handle_server_message(
+                {
+                    "jsonrpc": "2.0",
+                    "method": "tool/call/sync",
+                    "params": {
+                        "sessionId": "sess-1",
+                        "toolCallId": "call-1",
+                        "name": "run_in_terminal",
+                        "parameters": {"command": "pwd"},
+                    },
+                }
+            )
+            self.assertEqual(ws.frames, [])
+
+        import asyncio
+
+        asyncio.run(run())