```

feat(auth): 添加用户权限获取接口并完善JWT令牌角色信息

- 在JWT令牌中添加用户角色信息
- 新增get_my_permissions接口用于获取当前用户权限码列表
- 重构认证回调逻辑，增加错误日志记录
- 更新用户信息获取接口使用Authorization头验证
```

backend/app/api/v1/import_data.py

@@ -2,6 +2,7 @@
 from fastapi import APIRouter, UploadFile, File, Depends, Response
 from sqlalchemy.orm import Session
 from app.core.database import get_db
+from app.middleware.permission_middleware import require_permission
 from app.services.import_service import ImportService
 import shutil
 import io
@@ -11,7 +12,7 @@ router = APIRouter(prefix="/api/import", tags=["数据导入"])
 
 
 @router.get("/template")
-def download_template():
+def download_template(_: dict = Depends(require_permission('device.import'))):
     """下载导入数据模板"""
     wb = Workbook()
     ws = wb.active
@@ -54,7 +55,8 @@ def download_template():
 async def upload_excel(
     file: UploadFile = File(...),
     olt_id: int = None,
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    _: dict = Depends(require_permission('device.import')),
 ):
     """上传并导入 Excel 文件（仅导入 MAC 信息，不关联 OLT）"""
     file_path = f"/tmp/{file.filename}"