chore: remove chat router from API router and update related files for cleaner structure

refactor: improve code readability and structure in OpenAI integration tests and services, update requirements for consistency

feat: add OpenAI connection debug script and update requirements for improved package management

chore: update OpenAI package version and refactor chat streaming logic for improved error handling and added test endpoints

feat: add chat streaming endpoint and related schemas for OpenAI integration

Remove Python cache files from tracking and improve .gitignore

feat: add chat completions test endpoint to validate OpenAI integration and improve error handling

feat: implement DALL-E fallback mechanism in image generation service to handle API failures and enhance error logging

chore: enhance OpenAI integration with connection test endpoint, improved error handling, and validate API key presence

chore: update .gitignore to exclude Python bytecode files and modify prompt in page.tsx for image generation clarity

chore: update Next.js configuration for image domains, adjust API fetch URLs, and add health check endpoint in backend

chore: switch to nextjs user in Dockerfile and update start.sh to run frontend in background

chore: load environment variables using dotenv in config.py

chore: create directories for generated images and set permissions in Dockerfile; update start.sh to run frontend and backend as nextjs user

chore: update openai package version in requirements.txt to 1.82.0

fix: update backend module path in start.sh to reflect new structure

chore: update TypeScript and React type definitions, add app port to README, and modify tsconfig settings

feat: commit

initial commit