feat: Reinitialize frontend with SvelteKit and TypeScript

- Delete old Vite+Svelte frontend
- Initialize new SvelteKit project with TypeScript
- Configure Tailwind CSS v4 + DaisyUI
- Implement JWT authentication with auto-refresh
- Create login page with form validation (Zod)
- Add protected route guards
- Update Docker configuration for single-stage build
- Add E2E tests with Playwright (6/11 passing)
- Fix Svelte 5 reactivity with $state() runes

Known issues:
- 5 E2E tests failing (timing/async issues)
- Token refresh implementation needs debugging
- Validation error display timing

backend/vite.config.js

@@ -0,0 +1,18 @@
+import { defineConfig } from 'vite';
+import laravel from 'laravel-vite-plugin';
+import tailwindcss from '@tailwindcss/vite';
+
+export default defineConfig({
+    plugins: [
+        laravel({
+            input: ['resources/css/app.css', 'resources/js/app.js'],
+            refresh: true,
+        }),
+        tailwindcss(),
+    ],
+    server: {
+        watch: {
+            ignored: ['**/storage/framework/views/**'],
+        },
+    },
+});