feat: 实现Vue驱动的云存储系统初始功能

- 后端: Node.js + Express + SQLite架构
- 前端: Vue 3 + Axios实现
- 功能: 用户认证、文件上传/下载、分享链接、密码重置
- 安全: 密码加密、分享链接过期机制、缓存一致性
- 部署: Docker + Nginx容器化配置
- 测试: 完整的边界测试、并发测试和状态一致性测试

backend/check_expire.sql

@@ -0,0 +1,19 @@
+SELECT 
+  share_code,
+  substr(share_path, 1, 30) as path,
+  created_at,
+  expires_at,
+  datetime('now') as current_time,
+  CASE 
+    WHEN expires_at IS NULL THEN '永久有效'
+    WHEN expires_at > datetime('now') THEN '未过期'
+    ELSE '已过期'
+  END as status,
+  CASE 
+    WHEN expires_at IS NOT NULL AND expires_at > datetime('now') THEN '通过'
+    WHEN expires_at IS NULL THEN '通过'
+    ELSE '拦截'
+  END as findByCode_result
+FROM shares
+ORDER BY created_at DESC
+LIMIT 10;