fix: resolve three critical UI issues

- Fix hero video not displaying in notch safe area by changing z-index from -1 to 1
- Fix lucide icons not showing by installing and configuring nuxt-icon module
- Fix navigation bar bobbing by removing hysteresis thresholds and simplifying scroll handler

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

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

apps/website/assets/css/voyage-layout.css

@@ -238,9 +238,6 @@ html {
 /* iOS-specific navigation stabilization to prevent bobbing */
 @supports (-webkit-touch-callout: none) {
     .voyage-nav {
-        will-change: transform;
-        transform: translateZ(0);
-        -webkit-transform: translateZ(0);
         -webkit-backface-visibility: hidden; /* iOS optimization */
     }
 }