some fixes and refactors

backend/main.py

@@ -1,6 +1,6 @@
 from contextlib import asynccontextmanager
 from datetime import datetime
-from typing import Any, Callable, Generic, TypeVar
+from typing import Callable, Generic, TypeVar
 
 from fastapi import FastAPI, Depends, HTTPException, Response, status, Query
 from fastapi.middleware.cors import CORSMiddleware
@@ -8,6 +8,20 @@ from pydantic import BaseModel
 from sqlalchemy import select, func, desc
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from auth import (
+    ACCESS_TOKEN_EXPIRE_MINUTES,
+    COOKIE_NAME,
+    UserCreate,
+    UserLogin,
+    UserResponse,
+    get_password_hash,
+    get_user_by_email,
+    authenticate_user,
+    create_access_token,
+    get_current_user,
+    require_permission,
+    build_user_response,
+)
 from database import engine, get_db, Base
 from models import Counter, User, SumRecord, CounterRecord, Permission, Role, ROLE_REGULAR
 from validation import validate_profile_fields
@@ -47,20 +61,6 @@ async def paginate_with_user_email(
 
     records: list[R] = [row_mapper(record, email) for record, email in rows]
     return records, total, total_pages
-from auth import (
-    ACCESS_TOKEN_EXPIRE_MINUTES,
-    COOKIE_NAME,
-    UserCreate,
-    UserLogin,
-    UserResponse,
-    get_password_hash,
-    get_user_by_email,
-    authenticate_user,
-    create_access_token,
-    get_current_user,
-    require_permission,
-    build_user_response,
-)
 
 
 @asynccontextmanager