[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>

docker/Dockerfile

@@ -0,0 +1,18 @@
+FROM php:8.4-fpm-alpine
+
+# Extensions
+RUN docker-php-ext-install pdo pdo_mysql
+
+# Curl extension
+RUN apk add --no-cache curl-dev && docker-php-ext-install curl
+
+# Config
+COPY docker/php.ini /usr/local/etc/php/conf.d/custom.ini
+
+WORKDIR /var/www/nis2-agile
+
+COPY . .
+
+RUN chown -R www-data:www-data /var/www/nis2-agile
+
+EXPOSE 9000