feat: 增强SaaS后端功能与安全性

refactor: 重构数据库连接使用PostgreSQL替代SQLite
feat(auth): 增加JWT验证的audience和issuer检查
feat(crypto): 添加AES-256-GCM字段加密支持
feat(api): 集成utoipa实现OpenAPI文档
fix(admin): 修复配置项表单验证逻辑
style: 统一代码格式与类型定义
docs: 更新技术栈文档说明PostgreSQL

target/doc/totp_rs/sidebar-items.js

@@ -0,0 +1 @@
+window.SIDEBAR_ITEMS = {"enum":["Algorithm","Rfc6238Error","Secret","SecretParseError","TotpUrlError"],"struct":["Rfc6238","TOTP"]};