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/database/factories/RoleFactory.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Str;
+use App\Models\Role;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory\u003c\App\Models\Role>
+ */
+class RoleFactory extends Factory
+{
+    protected $model = Role::class;
+
+    public function definition(): array
+    {
+        return [
+            'name' => fake()->unique()->jobTitle(),
+            'description' => fake()->sentence(),
+        ];
+    }
+}