feat(frontend): Tailwind v4 @theme + vite-plugin-pwa + local fonts

Replaced vite.config.js with laravel+tailwind v4+VitePWA config, added auth.js and
touch.js entry points. Rewrote app.css with Tailwind v4 @theme custom tokens and local
@font-face declarations for Plus Jakarta Sans (variable) and JetBrains Mono. Downloaded
both woff2 font files locally to public/fonts/ — no CDN links. Vite build: exit 0.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -11,6 +11,7 @@
         "concurrently": "^9.0.1",
         "laravel-vite-plugin": "^3.1",
         "tailwindcss": "^4.0.0",
-        "vite": "^8.0.0"
+        "vite": "^8.0.0",
+        "vite-plugin-pwa": "^1.3.0"
     }
 }

resources/css/app.css

@@ -1,11 +1,33 @@
-@import 'tailwindcss';
-
-@source '../../vendor/laravel/framework/src/Illuminate/Pagination/resources/views/*.blade.php';
-@source '../../storage/framework/views/*.php';
-@source '../**/*.blade.php';
-@source '../**/*.js';
+@import "tailwindcss";
 
 @theme {
-    --font-sans: 'Instrument Sans', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
-        'Segoe UI Symbol', 'Noto Color Emoji';
+  --color-bg-base:        #f0eee9;
+  --color-text-primary:   oklch(0.22 0.015 270);
+  --color-text-secondary: oklch(0.42 0.012 270);
+  --color-text-muted:     oklch(0.58 0.01 270);
+  --color-border-subtle:  oklch(0.92 0.006 85);
+  --font-display: 'Plus Jakarta Sans', sans-serif;
+  --font-mono:    'JetBrains Mono', monospace;
+}
+
+@font-face {
+    font-family: 'Plus Jakarta Sans';
+    src: url('/fonts/PlusJakartaSans-VariableFont_wght.woff2') format('woff2');
+    font-weight: 100 900;
+    font-style: normal;
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'JetBrains Mono';
+    src: url('/fonts/JetBrainsMono-Regular.woff2') format('woff2');
+    font-weight: 400;
+    font-style: normal;
+    font-display: swap;
+}
+
+body {
+    background-color: var(--color-bg-base);
+    color: var(--color-text-primary);
+    font-family: var(--font-display);
 }

resources/js/auth.js

@@ -0,0 +1 @@
+// Auth entry point

resources/js/touch.js

@@ -0,0 +1 @@
+// Touch/tracing entry point for Vorschule (Phase 7)

vite.config.js

@@ -1,24 +1,45 @@
 import { defineConfig } from 'vite';
 import laravel from 'laravel-vite-plugin';
-import { bunny } from 'laravel-vite-plugin/fonts';
 import tailwindcss from '@tailwindcss/vite';
+import { VitePWA } from 'vite-plugin-pwa';
 
 export default defineConfig({
     plugins: [
         laravel({
-            input: ['resources/css/app.css', 'resources/js/app.js'],
-            refresh: true,
-            fonts: [
-                bunny('Instrument Sans', {
-                    weights: [400, 500, 600],
-                }),
+            input: [
+                'resources/css/app.css',
+                'resources/js/auth.js',
+                'resources/js/app.js',
+                'resources/js/touch.js',
             ],
+            refresh: true,
         }),
         tailwindcss(),
+        VitePWA({
+            registerType: 'autoUpdate',
+            manifest: false,
+            workbox: {
+                runtimeCaching: [
+                    {
+                        urlPattern: /\.(?:js|css|woff2|png|svg|ico)$/,
+                        handler: 'CacheFirst',
+                    },
+                    {
+                        urlPattern: /\/.*$/,
+                        handler: 'NetworkOnly',
+                    },
+                ],
+            },
+        }),
     ],
     server: {
-        watch: {
-            ignored: ['**/storage/framework/views/**'],
+        host: '0.0.0.0',
+        port: 5173,
+        hmr: {
+            host: 'app.dev.lernschiff.com',
+            protocol: 'wss',
+            clientPort: 443,
         },
+        cors: true,
     },
 });