修复数据采集和清理的bug，新增持仓排名功能，日线数据分页

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ft-app/app/routers/auth.py

@@ -9,16 +9,6 @@ router = APIRouter(prefix="/auth", tags=["auth"])
 SESSION_COOKIE = "ft_session"
 
 
-def get_current_user(request: Request, db: Session = Depends(get_db)) -> User | None:
-    user_id = request.cookies.get(SESSION_COOKIE)
-    if not user_id:
-        return None
-    try:
-        return db.query(User).filter(User.id == int(user_id)).first()
-    except (ValueError, TypeError):
-        return None
-
-
 @router.get("/login", response_class=HTMLResponse)
 def login_page(request: Request):
     template = request.app.state.templates.get_template("login.html")