Update project configuration and codebase

config.py

@@ -1,7 +1,6 @@
-from typing import Optional
-from pydantic_settings import BaseSettings
-from pydantic import Field
 from dotenv import load_dotenv
+from pydantic import Field
+from pydantic_settings import BaseSettings
 
 load_dotenv(override=True)
 
@@ -9,7 +8,7 @@ load_dotenv(override=True)
 class Settings(BaseSettings):
     bot_token: str = Field(alias="BOT_TOKEN")
     postgres_url: str = Field(alias="POSTGRES_URL")
-    proxy: Optional[str] = Field(None, alias="PROXY")
+    proxy: str | None = Field(None, alias="PROXY")
     admin_group_id: int = Field(alias="ADMIN_GROUP_ID")
     remnawave_url: str = Field(alias="REMNAWAVE_URL")
     subscription_url: str = Field(alias="SUBSCRIPTION_URL")