[CORE] Initial project scaffold - NIS2 Agile Compliance Platform

Complete MVP implementation including:
- PHP 8.4 backend with Front Controller pattern (80+ API endpoints)
- Multi-tenant architecture with organization_id isolation
- JWT authentication (HS256, 2h access + 7d refresh tokens)
- 14 controllers: Auth, Organization, Assessment, Dashboard, Risk,
  Incident, Policy, SupplyChain, Training, Asset, Audit, Admin
- AI Service integration (Anthropic Claude API) for gap analysis,
  risk suggestions, policy generation, incident classification
- NIS2 gap analysis questionnaire (~80 questions, 10 categories)
- MySQL schema (20 tables) with NIS2 Art. 21 compliance controls
- NIS2 Art. 23 incident reporting workflow (24h/72h/30d)
- Frontend: login, register, dashboard, assessment wizard, org setup
- Docker configuration (PHP-FPM + Nginx + MySQL)

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

public/api-status.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * NIS2 Agile - Health Check
+ */
+
+header('Content-Type: application/json');
+
+$status = [
+    'status'    => 'ok',
+    'app'       => 'NIS2 Agile',
+    'version'   => '1.0.0',
+    'timestamp' => date('c'),
+    'checks'    => [],
+];
+
+// Database check
+try {
+    require_once __DIR__ . '/../application/config/config.php';
+    require_once __DIR__ . '/../application/config/database.php';
+
+    Database::fetchOne('SELECT 1');
+    $status['checks']['database'] = 'ok';
+} catch (Throwable $e) {
+    $status['checks']['database'] = 'error';
+    $status['status'] = 'degraded';
+}
+
+http_response_code($status['status'] === 'ok' ? 200 : 503);
+echo json_encode($status, JSON_PRETTY_PRINT);