Remove unnecessary string quote from Usage type annotation

ihower · ihower · commit cfa7c1e39995 · 2025-11-22T16:43:51.000+08:00
diff --git a/src/agents/usage.py b/src/agents/usage.py
@@ -83,7 +83,7 @@ def __post_init__(self) -> None:
 
     def add(
         self,
-        other: "Usage",
+        other: Usage,
         model_name: str,
         agent_name: str,
         response_id: str | None = None,
