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

database/Dockerfile

@@ -0,0 +1,15 @@
+# Use MySQL 8.0 as base image
+FROM mysql:8.0
+
+# Rely on runtime environment variables provided by docker-compose
+# (MYSQL_ROOT_PASSWORD, MYSQL_DATABASE, MYSQL_USER, MYSQL_PASSWORD)
+
+# Copy only the deploy_dump.sql file with deterministic name for init order
+COPY deploy_dump.sql /docker-entrypoint-initdb.d/00_deploy_dump.sql
+
+# Expose MySQL port
+EXPOSE 3306
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD mysqladmin ping -h localhost || exit 1