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/truck-droplet.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 512"><!--! 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="M0 48C0 21.5 21.5 0 48 0H368c26.5 0 48 21.5 48 48V96h50.7c17 0 33.3 6.7 45.3 18.7L589.3 192c12 12 18.7 28.3 18.7 45.3V256v32 64c17.7 0 32 14.3 32 32s-14.3 32-32 32H576c0 53-43 96-96 96s-96-43-96-96H256c0 53-43 96-96 96s-96-43-96-96H48c-26.5 0-48-21.5-48-48V48zM416 256H544V237.3L466.7 160H416v96zM160 464a48 48 0 1 0 0-96 48 48 0 1 0 0 96zm368-48a48 48 0 1 0 -96 0 48 48 0 1 0 96 0zM208 272c39.8 0 72-29.6 72-66c0-27-39.4-82.9-59.9-110.3c-6.1-8.2-18.1-8.2-24.2 0C175.4 123 136 179 136 206c0 36.5 32.2 66 72 66z"/></svg>