Fix ban screen

backend/app/api/v1/auth.py

@@ -59,9 +59,15 @@ async def login(request: Request, data: UserLogin, db: DbSession):
 
     # Check if user is banned
     if user.is_banned:
+        # Return full ban info like in deps.py
+        ban_info = {
+            "banned_at": user.banned_at.isoformat() if user.banned_at else None,
+            "banned_until": user.banned_until.isoformat() if user.banned_until else None,
+            "reason": user.ban_reason,
+        }
         raise HTTPException(
             status_code=status.HTTP_403_FORBIDDEN,
-            detail="Your account has been banned",
+            detail=ban_info,
         )
 
     # If admin with Telegram linked, require 2FA