Fix: use sync version of track_request to avoid SyntaxError

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

api/services.py

@@ -188,7 +188,7 @@ class ClaudeProxyService:
         )
 
         session_id = self._get_session_id(request_data)
-        await self._session_tracker.track_request(session_id, resolved.provider_id)
+        self._session_tracker.track_request_sync(session_id, resolved.provider_id)
 
         request_id = f"req_{uuid.uuid4().hex[:12]}"
         logger.info(

core/session_tracker.py

@@ -113,21 +113,24 @@ class SessionTracker:
 
     async def track_request(self, session_id: str, provider_id: str) -> None:
         """Record a request for a session to a provider."""
-        async with self._lock:
-            self._cleanup_old_sessions()
+        self._track_request_sync(session_id, provider_id)
 
-            if session_id not in self._sessions:
-                if len(self._sessions) >= self._max_sessions:
-                    self._evict_lru_session()
-                self._sessions[session_id] = SessionState()
+    def track_request_sync(self, session_id: str, provider_id: str) -> None:
+        """Record a request for a session to a provider (sync version)."""
+        self._cleanup_old_sessions()
 
-            state = self._sessions[session_id]
-            state.requests_in_window += 1
-            state.last_request_time = time.monotonic()
-            state.total_requests += 1
+        if session_id not in self._sessions:
+            if len(self._sessions) >= self._max_sessions:
+                self._evict_lru_session()
+            self._sessions[session_id] = SessionState()
+
+        state = self._sessions[session_id]
+        state.requests_in_window += 1
+        state.last_request_time = time.monotonic()
+        state.total_requests += 1
 
-            self._session_requests[session_id][provider_id] += 1
-            self._provider_active[provider_id] += 1
+        self._session_requests[session_id][provider_id] += 1
+        self._provider_active[provider_id] += 1
 
     async def release_request(self, session_id: str, provider_id: str) -> None:
         """Release a request slot when streaming completes."""