feat(web): migrate application shell to TanStack Start

- replace the legacy client-only Vite bootstrap with TanStack Router routes, Start SSR, and Nitro output

- compose the reusable layout, navigation, appearance, chats, and notifications blocks with application-owned data

- persist UI preferences through server functions and initialize theme, sidebar, and breakpoint state before hydration

- add React Query, hotkey, toaster, and responsive dashboard integration

- add application-owned Lingui configuration and catalogs, mount the runtime provider, and lazily enable I18nDevtool in development

- remove superseded HTML, main entry, theme provider, and application ESLint configuration

apps/web/vite.config.ts

@@ -1,14 +1,36 @@
 import path from "path"
 import tailwindcss from "@tailwindcss/vite"
+import { tanstackStart } from "@tanstack/react-start/plugin/vite"
+import { i18n } from "@workspace/i18n/vite"
 import react from "@vitejs/plugin-react"
+import { nitro } from "nitro/vite"
 import { defineConfig } from "vite"
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react(), tailwindcss()],
   resolve: {
+    tsconfigPaths: true,
     alias: {
       "@": path.resolve(__dirname, "./src"),
     },
   },
+  optimizeDeps: {
+    include: ["use-sync-external-store/shim/with-selector"],
+  },
+  plugins: [
+    i18n(),
+    tailwindcss(),
+    tanstackStart({
+      router: {
+        generatedRouteTree: "route-tree.gen.ts",
+      },
+      srcDirectory: "src",
+    }),
+    react(),
+    nitro(),
+  ],
+  server: {
+    host: "0.0.0.0",
+    port: 31573,
+  },
 })