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/scss/_bordered-pulled.scss

@@ -0,0 +1,20 @@
+// bordered + pulled icons
+// -------------------------
+
+.#{$fa-css-prefix}-border {
+  border-color: var(--#{$fa-css-prefix}-border-color, #{$fa-border-color});
+  border-radius: var(--#{$fa-css-prefix}-border-radius, #{$fa-border-radius});
+  border-style: var(--#{$fa-css-prefix}-border-style, #{$fa-border-style});
+  border-width: var(--#{$fa-css-prefix}-border-width, #{$fa-border-width});
+  padding: var(--#{$fa-css-prefix}-border-padding, #{$fa-border-padding});
+}
+
+.#{$fa-css-prefix}-pull-left {
+  float: left;
+  margin-right: var(--#{$fa-css-prefix}-pull-margin, #{$fa-pull-margin}); 
+}
+
+.#{$fa-css-prefix}-pull-right {
+  float: right;
+  margin-left: var(--#{$fa-css-prefix}-pull-margin, #{$fa-pull-margin}); 
+}