test: write comprehensive CRUD tests for all modules and fix missing Database methods

fix: resolve TypeScript compilation error in authorize function

fix: database connection string support for render deployments

fix: resolve infinite redirect loop, fix database connection lazily, correct statistics APIs to use real data, fix frontend parsing errors

合并角色系统并修复登录跳转

feat: 对接数据库真实数据，全部分析API支持DB+mock降级

feat: 添加Hugging Face Spaces部署配置及前端构建修复

first commit