- Introduced `rebuild.sh` script for streamlined application rebuild and server management in both production and development modes.
- Created `REBUILD.md` documentation for quick start instructions and detailed steps for rebuilding the application.
- Added `HelpModal` component to provide users with in-app guidance on how to play the MirrorMatch game, including features, tips, and keyboard shortcuts.
- Updated `layout.tsx` to include the `HelpModal` for user accessibility.
- Adjusted authentication handling in `auth.ts` to ensure proper cookie management based on environment settings.
