refactor: reorganize the whole project layout

app/api/auth/router.py

@@ -1,15 +1,16 @@
 from datetime import UTC, datetime
 from typing import Annotated
 
+from fastapi import APIRouter, Depends, HTTPException, Response, status
+
 from core.security import (
     AuthContext,
     create_access_token,
     get_auth_context,
     verify_password,
 )
-from db.auth import get_user_by_username, revoke_token
-from fastapi import APIRouter, Depends, HTTPException, Response, status
 from models.auth import LoginInput, TokenResponse
+from repositories.auth import get_user_by_username, revoke_token
 
 router = APIRouter(
     prefix="/auth",

app/api/proxy/router.py

@@ -1,16 +1,17 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+
 from core.security import require_authenticated_user
-from db.proxy import (
+from models.proxy import ProxyCreateInput, ProxyUpdateInput
+from repositories.proxy import (
     create_proxy,
     delete_proxy,
     get_proxy_by_port,
     update_proxy,
 )
-from db.proxy import (
+from repositories.proxy import (
     list_proxies as list_proxy_documents,
 )
-from fastapi import APIRouter, Depends, HTTPException, status
-from models.proxy import ProxyCreateInput, ProxyUpdateInput
-from utils.proxy.validator import ProxyCodeValidationError, validate_proxy_code
+from services.proxy.validator import ProxyCodeValidationError, validate_proxy_code
 
 router = APIRouter(
     prefix="/proxy",