Scaffold full project: Vue 3/Inertia frontend, Docker infra, domain model

- Frontend: Vue 3 + Inertia.js + Pinia + Tailwind CSS with layout and dashboard page
- Infrastructure: Docker Compose with nginx, PHP-FPM, PostgreSQL+pgvector, Redis, Python AI service
- Database: 22 migrations covering all domain entities (projects, phases, commitments, decisions, documents, handover, audit)
- Models: 23 Eloquent models with relationships, casts, and 14 string-backed enums
- AI service: FastAPI scaffold with health, chat, summarize, and search endpoints

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/Models/Budget.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\BudgetStatus;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Budget extends Model
+{
+    protected $fillable = [
+        'project_id',
+        'bedrag',
+        'type',
+        'periode',
+        'status',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'status' => BudgetStatus::class,
+            'bedrag' => 'decimal:2',
+        ];
+    }
+
+    public function project(): BelongsTo
+    {
+        return $this->belongsTo(Project::class);
+    }
+
+    public function bestedingen(): HasMany
+    {
+        return $this->hasMany(Besteding::class);
+    }
+}