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/app/Models/Project.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+
+class Project extends Model
+{
+    use HasFactory, HasUuids;
+
+    protected $primaryKey = 'id';
+    public $incrementing = false;
+    protected $keyType = 'string';
+
+    protected $fillable = [
+        'code',
+        'title',
+        'status_id',
+        'type_id',
+        'approved_estimate',
+        'forecasted_effort',
+    ];
+
+    protected $casts = [
+        'approved_estimate' => 'decimal:2',
+        'forecasted_effort' => 'array',
+    ];
+
+    /**
+     * Get the status that owns the project.
+     */
+    public function status()
+    {
+        return $this->belongsTo(ProjectStatus::class, 'status_id');
+    }
+
+    /**
+     * Get the type that owns the project.
+     */
+    public function type()
+    {
+        return $this->belongsTo(ProjectType::class, 'type_id');
+    }
+
+    /**
+     * Get the allocations for the project.
+     */
+    public function allocations(): HasMany
+    {
+        return $this->hasMany(Allocation::class);
+    }
+
+    /**
+     * Get the actuals for the project.
+     */
+    public function actuals(): HasMany
+    {
+        return $this->hasMany(Actual::class);
+    }
+}