feat: 同步管理端、用户端与后端业务，并接通线上 Web 接口

补齐平台订阅、外部登录、CRM 同步与用户端页面；Nginx 转发用户端接口，登录页使用 Google 与 Apple 标志。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/package.json

@@ -32,6 +32,7 @@
     "svg-captcha": "^1.4.0",
     "tslib": "^2.8.1",
     "typeorm": "npm:@cool-midway/typeorm@0.3.20",
+    "typescript": "~5.8.2",
     "uuid": "^11.1.0",
     "ws": "^8.18.1"
   },
@@ -47,8 +48,7 @@
     "mwts": "^1.3.0",
     "mwtsc": "^1.15.1",
     "rimraf": "^6.0.1",
-    "ts-jest": "^29.3.0",
-    "typescript": "~5.8.2"
+    "ts-jest": "^29.3.0"
   },
   "engines": {
     "node": ">=18.0.0"