refactor: P7 切尾——删除 application/extensions/utils，WSGI 切 src

【切尾】
- src/app.py：应用工厂（原 application/factory.py）
- src/extensions.py：扩展注册编排（原 extensions/）
- src/wsgi.py：生产 WSGI 入口
- 根 app.py 改为 from src.app import create_app（开发入口保留）
- gunicorn/Docker/compose 指向 src.wsgi:app
- 删除 application/、extensions/、utils/（全部代码已迁入 src/）

【清理】21 个 router 中间件导入改 src.core；修复 level 服务潜在 bug
（utils.load2dict 不存在 → model_to_dict）；测试文件 R 导入改 src.core

【里程碑】全项目 flake8 从 P1 基线 154 条 → **0 条**；
12 passed；app.py 与 src.wsgi 双入口均启动

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

src/modules/association/role_menu/router.py

@@ -54,8 +54,8 @@
 
 from flask import Blueprint
 
-from application.middleware.check_permission import check_permission
-from application.middleware.check_demo import check_demo
+from src.core.permission import check_permission
+from src.core.middleware import check_demo
 from src.modules.system.role import service as role_menu
 
 from src.common.utils.request import parse_request_body

src/modules/association/user_role/router.py

@@ -13,8 +13,8 @@
 
 from flask import Blueprint
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.user import service as user_role
 from src.core import response as R
 user_role_blue = Blueprint('user_role', __name__, url_prefix='/user/role')

src/modules/auth/router.py

@@ -47,7 +47,7 @@
 """
 from flask import Blueprint
 from sqlalchemy import and_
-from application.middleware.check_demo import check_demo
+from src.core.middleware import check_demo
 from src.modules.auth import service as login
 from src.modules.log import service as login_log
 from src.modules.system.user.models import User

src/modules/city/router.py

@@ -57,8 +57,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.city import service as city
 from src.common.utils.request import parse_request_body
 

src/modules/cms/article/router.py

@@ -18,8 +18,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.cms.article import service as article
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/cms/category/router.py

@@ -17,8 +17,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.cms.category import service as category
 from src.common.utils.request import parse_request_body
 

src/modules/cms/link/router.py

@@ -57,8 +57,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.cms.link import service as link
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/configuration/router.py

@@ -55,8 +55,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.configuration import service as config
 from src.modules.configuration import service as config_item
 from src.common.utils.request import parse_batch_ids, parse_request_body

src/modules/dictionary/router.py

@@ -55,8 +55,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.dictionary import service as dict
 from src.modules.dictionary import service as dict_item
 from src.common.utils.request import parse_batch_ids, parse_request_body

src/modules/file_template/router.py

@@ -17,8 +17,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.file_template import service as file_template
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/job/router.py

@@ -7,8 +7,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.job import service as job
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/log/router.py

@@ -17,8 +17,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.log import service as login_log
 from src.modules.log import service as operation_log
 from src.common.utils.request import parse_batch_ids

src/modules/notice/router.py

@@ -55,8 +55,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.notice import service as notice
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/param/router.py

@@ -59,8 +59,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.param import service as param
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/system/dept/router.py

@@ -57,8 +57,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.dept import service as dept
 from src.common.utils.request import parse_request_body
 

src/modules/system/level/router.py

@@ -58,8 +58,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.level import service as level
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/system/level/service.py

@@ -75,7 +75,6 @@ from sqlalchemy import and_
 from openpyxl.reader.excel import load_workbook
 from openpyxl.workbook import Workbook
 
-import utils
 
 from src.common.constants.common import PAGE_SIZE
 from src.modules.system.level.schema import LevelForm, LevelStatusForm
@@ -530,7 +529,7 @@ def get_level_list():
         # 转换为字典列表
         result = []
         for level in level_list:
-            result.append(utils.load2dict(level))
+            result.append(model_to_dict(level))
 
         return result
 

src/modules/system/menu/router.py

@@ -55,8 +55,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.menu import service as menu
 
 from src.common.utils.request import parse_request_body

src/modules/system/position/router.py

@@ -57,8 +57,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.position import service as position
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/system/role/router.py

@@ -57,8 +57,8 @@
 """
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.role import service as role
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/system/user/router.py

@@ -58,8 +58,8 @@
 
 from flask import Blueprint, request
 
-from application.middleware.check_demo import check_demo
-from application.middleware.check_permission import check_permission
+from src.core.middleware import check_demo
+from src.core.permission import check_permission
 from src.modules.system.user import service as user
 from src.common.utils.request import parse_batch_ids, parse_request_body
 

src/modules/upload/router.py

@@ -52,18 +52,19 @@
 
 from flask import Blueprint
 
-from application.middleware.check_demo import check_demo
+from src.core.middleware import check_demo
 from src.modules.upload import service as upload
-upload_blue = Blueprint('upload', __name__, url_prefix='/upload')
 from config import UPLOAD_ALLOWED_EXTS
-from src.core import response as R
+
+upload_blue = Blueprint("upload", __name__, url_prefix="/upload")
 
 
 # ============================================================
 # 文件上传
 # ============================================================
 
-@upload_blue.route('/uploadFile', methods=["POST"])
+
+@upload_blue.route("/uploadFile", methods=["POST"])
 @check_demo
 def upload_file():
     """