Enhances accessibility and usability for touch devices and Chromebooks by updating global styles, adding ARIA attributes, and optimizing component layouts. Introduces a new useIsTouchDevice hook, improves focus states, and increases viewport scalability. ChatDetail now supports better keyboard navigation and larger touch targets.
Replaces hardcoded production API URLs with localhost defaults for local development in both server and client code. Updates Dockerfile to require API URLs via deployment environment variables. Improves ChatTable to use a batch endpoint for chats and unread counts, with backward compatibility. Adds an env.example file to document required environment variables. Updates next.config.mjs to use environment variables for backend API rewrites and image domains.
