Complete React migration improvements and fixes

- Fix button styling inconsistency for 'did' button using proper CSS reset
- Replace Font Awesome spinners with yellow color (#fff700) for consistency
- Implement holographic card effects for special status cards (yui, first, etc.)
- Add cached user data loading from /json/users.json for faster initial load
- Fix loading states to show spinners instead of "User not found" messages
- Clean up debug console logs for production readiness
- Add proper error handling for API calls
- Update CSS imports to use local files from /pkg/ directory

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

public/pkg/font-awesome/svgs/solid/bowl-rice.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! Font Awesome Free 6.5.2 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc. --><path d="M176 56c0-13.3 10.7-24 24-24h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H200c-13.3 0-24-10.7-24-24zm24 48h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H200c-13.3 0-24-10.7-24-24s10.7-24 24-24zM56 176H72c13.3 0 24 10.7 24 24s-10.7 24-24 24H56c-13.3 0-24-10.7-24-24s10.7-24 24-24zM0 283.4C0 268.3 12.3 256 27.4 256H484.6c15.1 0 27.4 12.3 27.4 27.4c0 70.5-44.4 130.7-106.7 154.1L403.5 452c-2 16-15.6 28-31.8 28H140.2c-16.1 0-29.8-12-31.8-28l-1.8-14.4C44.4 414.1 0 353.9 0 283.4zM224 200c0-13.3 10.7-24 24-24h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H248c-13.3 0-24-10.7-24-24zm-96 0c0-13.3 10.7-24 24-24h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H152c-13.3 0-24-10.7-24-24zm-24-96h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H104c-13.3 0-24-10.7-24-24s10.7-24 24-24zm216 96c0-13.3 10.7-24 24-24h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H344c-13.3 0-24-10.7-24-24zm-24-96h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H296c-13.3 0-24-10.7-24-24s10.7-24 24-24zm120 96c0-13.3 10.7-24 24-24h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H440c-13.3 0-24-10.7-24-24zm-24-96h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H392c-13.3 0-24-10.7-24-24s10.7-24 24-24zM296 32h16c13.3 0 24 10.7 24 24s-10.7 24-24 24H296c-13.3 0-24-10.7-24-24s10.7-24 24-24z"/></svg>