Update for HuggingFace Spaces deployment

Fix authentication and database issues

feat: Phase 5 complete - Full stack AI Todo application with Dapr and Kafka

fix: change cors_origins type to str|list to prevent JSON parsing

fix: add CORS_ORIGINS string-to-list parser for env variables

fix: add default JWT_SECRET for development

fix: await params in Next.js 15+ API routes

Add .gitignore to exclude .env files

Phase 4: Infrastructure, Docker, Kubernetes, Chatbot with Qwen API