fix: Avoid deadlock in CircuitBreaker.get_state() by checking can_attempt() before lock

app.py

@@ -214,12 +214,14 @@ class CircuitBreaker:
 
     def get_state(self) -> Dict[str, Any]:
         """Get circuit breaker state."""
+        # Check can_attempt BEFORE acquiring lock to avoid deadlock
+        can_att = self.can_attempt()
         with self._lock:
             return {
                 "state": self._state,
                 "failure_count": self._failure_count,
                 "last_failure_time": self._last_failure_time,
-                "can_attempt": self.can_attempt()
+                "can_attempt": can_att
             }