a2a-source-edit: write agent.py

agent.py

@@ -767,6 +767,14 @@ def redact_secrets(text: str) -> str:
     return redacted
 
 
+def _redact_match(match: re.Match[str]) -> str:
+    return (match.group(1) if match.lastindex else "") + "[REDACTED]"
+
+
+def _jsonschema_error_path(error: Any) -> Any:
+    return error.path
+
+
 def redact_obj(value: Any) -> Any:
     if isinstance(value, dict):
         out: dict[str, Any] = {}