🎨 Fix enum style (#140)

Author: Nativu5

app/utils/config.py

@@ -1,7 +1,7 @@
 import ast
 import os
 import sys
-from enum import Enum
+from enum import StrEnum
 from typing import Any, Literal
 
 import orjson
@@ -72,14 +72,14 @@ def _parse_json_string(cls, v: Any) -> Any:
         return v
 
 
-class OversizedContextStrategy(str, Enum):
+class OversizedContextStrategy(StrEnum):
     """Strategy for handling oversized context."""
 
     COMPACTION = "compaction"
     FILE = "file"
 
 
-class ChatMode(str, Enum):
+class ChatMode(StrEnum):
     """Chat mode options for Gemini conversation handling."""
 
     NORMAL = "normal"