feat(webapp): restaurant bundle skeleton

Standalone customer-facing bundle for the LNbits 'restaurant'
extension, modeled on the market bundle. v1 ships single-venue
(URL-driven via /r/:slug) with REST-only order placement; festival
aggregator and NIP-17 transport are tracked as
aiolabs/restaurant#8 and #9 respectively.

Skeleton this commit lands:

  vite.restaurant.config.ts  — port 5186, dist-restaurant/, green
                                theme color, PWA manifest, alias
                                @/app.config -> restaurant-app/.
  restaurant.html             — entry; title 'Restaurant — Order'.
  src/restaurant-app/
    main.ts                   — startApp + PWA SW registration.
    app.ts                    — module registration glue
                                (baseModule + restaurantModule).
    app.config.ts             — modules.restaurant config block.
                                Reserves a features:{} slot for
                                tier-gated UI (aiolabs/restaurant#2).
    App.vue                   — AppShell with Browse / Cart /
                                Orders bottom-nav tabs.
  src/modules/restaurant/
    index.ts                  — ModulePlugin shell with the future-
                                roadmap context inlined as
                                top-of-file comment (#1..#9).
    views/HomePage.vue        — placeholder; commit 4 replaces it
                                with real discovery + redirect.
  src/core/di-container.ts    — RESTAURANT_API +
                                RESTAURANT_NOSTR_SYNC tokens
                                reserved (consumers land in 3 / 8).
  package.json                — dev:restaurant, build:restaurant,
                                preview:restaurant scripts and
                                append to dev:all + build:demo.

Verified:
  - vue-tsc -b passes (whole webapp, all bundles).
  - vite build --config vite.restaurant.config.ts builds clean
    against VITE_LNBITS_BASE_URL=http://localhost:5001
    VITE_RESTAURANT_DEFAULT_SLUG=big-jays-bustaurant.
  - vite dev server boots on :5186 and serves the entry.

Companion branch: extension repo aiolabs/restaurant on branch
feat/restaurant-by-slug already provides
GET /restaurants/by-slug/{slug} that the webapp will consume in
commit 3.

vite.restaurant.config.ts

@@ -0,0 +1,132 @@
+import { fileURLToPath, URL } from 'node:url'
+import vue from '@vitejs/plugin-vue'
+import tailwindcss from '@tailwindcss/vite'
+import { defineConfig, type Plugin } from 'vite'
+import { VitePWA } from 'vite-plugin-pwa'
+import { ViteImageOptimizer } from 'vite-plugin-image-optimizer'
+import { visualizer } from 'rollup-plugin-visualizer'
+
+function restaurantHtmlPlugin(): Plugin {
+  return {
+    name: 'restaurant-html-rewrite',
+    configureServer(server) {
+      server.middlewares.use((req, _res, next) => {
+        // Strip query before checking for an extension — JWTs (e.g. ?token=...)
+        // contain dots and would otherwise get mistaken for an asset request.
+        const path = req.url ? req.url.split('?')[0] : ''
+        if (
+          req.url &&
+          !req.url.startsWith('/@') &&
+          !req.url.startsWith('/src/') &&
+          !req.url.startsWith('/node_modules/') &&
+          !path.includes('.')
+        ) {
+          req.url = '/restaurant.html'
+        }
+        next()
+      })
+    },
+  }
+}
+
+/**
+ * Vite config for the standalone Restaurant customer app.
+ *
+ * Set VITE_BASE_PATH to deploy under a path prefix:
+ *   VITE_BASE_PATH=/restaurant/ → app.${domain}/restaurant/ (shared auth)
+ *   (default: /)                → restaurant.${domain} (standalone subdomain)
+ *
+ * The companion server is the LNbits "restaurant" extension at
+ * ~/dev/shared/extensions/restaurant. v1 ships single-venue (URL-driven
+ * via /r/:slug); festival/aggregator and NIP-17 transport are tracked
+ * in repo issues #8 and #9 on aiolabs/restaurant.
+ */
+export default defineConfig(({ mode }) => ({
+  base: process.env.VITE_BASE_PATH || '/',
+  // Per-app dep cache so concurrent dev servers don't race on .vite/deps
+  cacheDir: 'node_modules/.vite-restaurant',
+  server: {
+    port: 5186,
+    strictPort: true,
+  },
+  plugins: [
+    restaurantHtmlPlugin(),
+    vue(),
+    tailwindcss(),
+    VitePWA({
+      registerType: 'autoUpdate',
+      devOptions: { enabled: false },
+      workbox: {
+        globPatterns: ['**/*.{js,css,html,ico,png,svg}'],
+        navigateFallback: 'restaurant.html',
+        navigateFallbackAllowlist: [
+          new RegExp(`^${(process.env.VITE_BASE_PATH || '/').replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}`),
+        ],
+      },
+      includeAssets: [
+        'favicon.ico',
+        'apple-touch-icon.png',
+        'mask-icon.svg',
+        'icon-192.png',
+        'icon-512.png',
+        'icon-maskable-192.png',
+        'icon-maskable-512.png',
+      ],
+      manifest: {
+        name: 'Restaurant — Order',
+        short_name: 'Restaurant',
+        description: 'Order from your local Nostr-native restaurant with Lightning payments',
+        // Green to differentiate from market red. PDF tile is purple
+        // (see ~/dev/shared/extensions/restaurant/static/image/restaurant.png).
+        theme_color: '#16a34a',
+        background_color: '#ffffff',
+        display: 'standalone',
+        orientation: 'portrait-primary',
+        start_url: process.env.VITE_BASE_PATH || '/',
+        scope: process.env.VITE_BASE_PATH || '/',
+        id: 'restaurant-app',
+        categories: ['food', 'shopping'],
+        lang: 'en',
+        icons: [
+          { src: 'icon-192.png', sizes: '192x192', type: 'image/png', purpose: 'any' },
+          { src: 'icon-512.png', sizes: '512x512', type: 'image/png', purpose: 'any' },
+          { src: 'icon-maskable-192.png', sizes: '192x192', type: 'image/png', purpose: 'maskable' },
+          { src: 'icon-maskable-512.png', sizes: '512x512', type: 'image/png', purpose: 'maskable' },
+        ],
+      },
+    }),
+    ViteImageOptimizer({
+      jpg: { quality: 80 },
+      png: { quality: 80 },
+      webp: { lossless: true },
+    }),
+    mode === 'analyze' &&
+      visualizer({
+        open: true,
+        filename: 'dist-restaurant/stats.html',
+        gzipSize: true,
+        brotliSize: true,
+      }),
+  ],
+  resolve: {
+    alias: {
+      // ORDER MATTERS — @/app.config must precede @ (first-match-wins).
+      '@/app.config': fileURLToPath(new URL('./src/restaurant-app/app.config.ts', import.meta.url)),
+      '@': fileURLToPath(new URL('./src', import.meta.url)),
+    },
+  },
+  build: {
+    outDir: 'dist-restaurant',
+    rollupOptions: {
+      input: 'restaurant.html',
+      output: {
+        manualChunks: {
+          'vue-vendor': ['vue', 'vue-router', 'pinia'],
+          'ui-vendor': ['radix-vue', '@vueuse/core'],
+          'shadcn': ['class-variance-authority', 'clsx', 'tailwind-merge'],
+        },
+      },
+    },
+    chunkSizeWarningLimit: 1000,
+  },
+}))