refactor: move ROUTES from @/lib/routes to @/router/routes

src/router/routes.ts

@@ -0,0 +1,51 @@
+/**
+ * 类型化路由常量
+ *
+ * 集中管理应用中使用的路由路径，与 Flutter `lib/router/app_router.dart` 的
+ * `AppRoutes` 一一对应。被服务端组件、客户端组件、`src/proxy.ts` 三端共用。
+ *
+ * 关键设计：
+ *  - `as const` 让每个值都是字符串字面量类型，可用于 `PageProps<'/literal'>`。
+ *  - 不导出 Client-only 模块（`use-auth-gate` 走独立路径导入），保证 Server bundle 不被污染。
+ *  - 动态深链通过 `ROUTE_BUILDERS` 函数生成，避免手拼字符串。
+ */
+
+/** 静态路由字面量 */
+export const ROUTES = {
+  root: "/",
+  splash: "/splash",
+  chat: "/chat",
+  auth: "/auth",
+  sidebar: "/sidebar",
+} as const;
+
+export type StaticRoute = (typeof ROUTES)[keyof typeof ROUTES];
+
+/** 动态深链构造器 */
+export const ROUTE_BUILDERS = {
+  chatDeviceId: (deviceId: string): `/chat/deviceid/${string}` =>
+    `/chat/deviceid/${encodeURIComponent(deviceId)}` as const,
+} as const;
+
+/** 仅未登录态可见的路由（命中后已登录用户应跳走） */
+export const AUTH_ONLY_ROUTES: readonly StaticRoute[] = [
+  ROUTES.splash,
+  ROUTES.auth,
+] as const;
+
+/** 公开路由（游客态也允许访问） */
+export const PUBLIC_ROUTES: readonly StaticRoute[] = [
+  ROUTES.chat,
+  ROUTES.sidebar,
+] as const;
+
+/** 所有静态路由，供 `proxy.ts` matcher 与未来 sitemap 使用 */
+export const ALL_STATIC_ROUTES: readonly StaticRoute[] = [
+  ROUTES.splash,
+  ROUTES.chat,
+  ROUTES.auth,
+  ROUTES.sidebar,
+] as const;
+
+/** 联合路由类型，包含静态路由与已知动态路由 */
+export type Route = StaticRoute | `/chat/deviceid/${string}`;