Integrate complete Candidat platform with ASP.NET chatbot service

- Added Next.js frontend for candidate interviews
- Added Node.js backend with TypeScript and AI integration
- Added ASP.NET Core chatbot service for specialized AI conversations
- Added MySQL database with complete schema
- Added Nginx reverse proxy configuration
- Complete Docker Compose orchestration for all services
- Environment configuration for production, development, and Cloudflare
- Comprehensive documentation and setup instructions
- Flattened nested folder structures for clean organization
- Integrated chatbot service with fallback to direct AI calls

env.cloudflare

@@ -0,0 +1,38 @@
+# Cloudflare Environment Configuration for VPS
+APP_VERSION=1.0.0
+NODE_ENV=production
+
+# Database (Docker)
+MYSQL_ROOT_PASSWORD=your_secure_root_password_here
+MYSQL_DATABASE=candidb_main
+MYSQL_USER=candidat
+MYSQL_PASSWORD=your_secure_db_password_here
+
+# Database ports (internal only, not exposed externally)
+DB_PORT=3306
+DB_X_PORT=33060
+
+# Application URLs and Ports (Cloudflare handles SSL termination)
+NEXT_PUBLIC_API_URL=https://candivista.com
+BACKEND_PORT=8083
+FRONTEND_PORT=3000
+NGINX_PORT=80
+NGINX_SSL_PORT=443
+
+# AI Configuration
+AI_PROVIDER=openrouter
+OPENROUTER_API_KEY=your_openrouter_api_key_here
+OPENROUTER_MODEL=gemma
+OPENROUTER_BASE_URL=openrouter.ai
+OPENROUTER_REL_PATH=/api
+OPENROUTER_TEMPERATURE=0.7
+
+# Fallback AI (if needed)
+AI_PORT=11434
+AI_MODEL=gpt-oss:20b
+
+# Chatbot Service Configuration
+CHATBOT_SERVICE_URL=http://chatbot:80
+CHATBOT_SERVICE_TIMEOUT=30000
+CHATBOT_FALLBACK_ENABLED=true
+CHATBOT_PORT=5000