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.example

@@ -0,0 +1,38 @@
+# Environment
+APP_VERSION=1.0.0
+NODE_ENV=development
+
+# Database (Docker)
+MYSQL_ROOT_PASSWORD=musicisoverrated
+MYSQL_DATABASE=candidb_main
+MYSQL_USER=candidat
+MYSQL_PASSWORD=StrongLocalDevPass123
+
+DB_PORT=3306
+DB_X_PORT=33060
+
+# Application URLs and Ports
+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="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"
+OPENROUTER_MODEL=gemma  # or any model from your predefined list
+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
+