refactor: 重构待办事项模块，统一路由与数据操作逻辑

- 将客户端导出改为私有常量，避免外部直接访问。
- 添加待办事项的完整 CRUD 操作，包括列表查询、创建、更新和删除功能，并使用 Zod 进行输入输出验证和 Drizzle ORM 操作数据库。
- 导出客户端和路由器模块的公共接口
- 添加路由配置，将 todo 处理程序注册到路由系统中。
- 删除已废弃的路由定义文件
- 删除待办事项相关路由和接口定义
- 删除未使用的 TodoSchema 模式定义以清理代码库。
- 将 Todo 路由重命名为复数形式并迁移数据获取与操作逻辑至 Orpc 客户端调用
- 将路由名称和路径从 `/todo` 更新为 `/todos`，并同步更新相关类型定义和引用。

src/routeTree.gen.ts

@@ -9,13 +9,13 @@
 // Additionally, you should also exclude this file from your linter and/or formatter to prevent it from being checked or modified.
 
 import { Route as rootRouteImport } from './routes/__root'
-import { Route as TodoRouteImport } from './routes/todo'
+import { Route as TodosRouteImport } from './routes/todos'
 import { Route as IndexRouteImport } from './routes/index'
 import { Route as ApiRpcSplatRouteImport } from './routes/api/rpc.$'
 
-const TodoRoute = TodoRouteImport.update({
-  id: '/todo',
-  path: '/todo',
+const TodosRoute = TodosRouteImport.update({
+  id: '/todos',
+  path: '/todos',
   getParentRoute: () => rootRouteImport,
 } as any)
 const IndexRoute = IndexRouteImport.update({
@@ -31,41 +31,41 @@ const ApiRpcSplatRoute = ApiRpcSplatRouteImport.update({
 
 export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
-  '/todo': typeof TodoRoute
+  '/todos': typeof TodosRoute
   '/api/rpc/$': typeof ApiRpcSplatRoute
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
-  '/todo': typeof TodoRoute
+  '/todos': typeof TodosRoute
   '/api/rpc/$': typeof ApiRpcSplatRoute
 }
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
   '/': typeof IndexRoute
-  '/todo': typeof TodoRoute
+  '/todos': typeof TodosRoute
   '/api/rpc/$': typeof ApiRpcSplatRoute
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
-  fullPaths: '/' | '/todo' | '/api/rpc/$'
+  fullPaths: '/' | '/todos' | '/api/rpc/$'
   fileRoutesByTo: FileRoutesByTo
-  to: '/' | '/todo' | '/api/rpc/$'
-  id: '__root__' | '/' | '/todo' | '/api/rpc/$'
+  to: '/' | '/todos' | '/api/rpc/$'
+  id: '__root__' | '/' | '/todos' | '/api/rpc/$'
   fileRoutesById: FileRoutesById
 }
 export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
-  TodoRoute: typeof TodoRoute
+  TodosRoute: typeof TodosRoute
   ApiRpcSplatRoute: typeof ApiRpcSplatRoute
 }
 
 declare module '@tanstack/react-router' {
   interface FileRoutesByPath {
-    '/todo': {
-      id: '/todo'
-      path: '/todo'
-      fullPath: '/todo'
-      preLoaderRoute: typeof TodoRouteImport
+    '/todos': {
+      id: '/todos'
+      path: '/todos'
+      fullPath: '/todos'
+      preLoaderRoute: typeof TodosRouteImport
       parentRoute: typeof rootRouteImport
     }
     '/': {
@@ -87,7 +87,7 @@ declare module '@tanstack/react-router' {
 
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
-  TodoRoute: TodoRoute,
+  TodosRoute: TodosRoute,
   ApiRpcSplatRoute: ApiRpcSplatRoute,
 }
 export const routeTree = rootRouteImport