feat: 第一阶段基础框架搭建

后端 (Laravel 10 + Sanctum):
- RBAC 四层权限系统 (users→roles→permissions→menus)
- 门店隔离中间件 (BelongsToStore Trait + StoreIsolation Middleware)
- 操作日志中间件 (自动记录写操作)
- 权限检查中间件 (CheckPermission)
- 16张数据库表迁移 (系统基础+RBAC+字典+配置)
- 11个 Eloquent Model
- Auth API (登录/登出/用户信息)
- 系统设置模块 CRUD (门店/部门/职务/用户/角色/菜单/权限/字典/日志)
- 45条 RESTful API 路由
- InitSeeder 初始数据 (超管/角色/76权限/31菜单)

前端 (Vue 3 + Element Plus + Vite):
- Axios 请求封装 + Token 注入
- Pinia 状态管理 (user + permission store)
- 动态路由 (服务端菜单→前端路由自动生成)
- 后台布局 (侧边栏+顶栏+主内容区)
- 登录页 + 仪表盘首页
- 系统设置 7 个 CRUD 页面

技术方案文档 (7卷):
- 技术总览/数据库设计/API规范/RBAC设计/模块详设/小程序设计/部署方案

backend/config/services.php

@@ -0,0 +1,38 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Third Party Services
+    |--------------------------------------------------------------------------
+    |
+    | This file is for storing the credentials for third party services such
+    | as Mailgun, Postmark, AWS and more. This file provides the de facto
+    | location for this type of information, allowing packages to have
+    | a conventional file to locate the various service credentials.
+    |
+    */
+
+    'postmark' => [
+        'key' => env('POSTMARK_API_KEY'),
+    ],
+
+    'resend' => [
+        'key' => env('RESEND_API_KEY'),
+    ],
+
+    'ses' => [
+        'key' => env('AWS_ACCESS_KEY_ID'),
+        'secret' => env('AWS_SECRET_ACCESS_KEY'),
+        'region' => env('AWS_DEFAULT_REGION', 'us-east-1'),
+    ],
+
+    'slack' => [
+        'notifications' => [
+            'bot_user_oauth_token' => env('SLACK_BOT_USER_OAUTH_TOKEN'),
+            'channel' => env('SLACK_BOT_USER_DEFAULT_CHANNEL'),
+        ],
+    ],
+
+];