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║        🎯 ROOT CAUSE FOUND & PERMANENTLY SOLVED 🎯             ║
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THE PROBLEM:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Your changes weren't showing because of TRIPLE-LAYER CACHING:

  🔴 Layer 1: BROWSER CACHE (30 days)
     └─ Following aggressive cache headers from backend

  🔴 Layer 2: NGINX CACHE (30 days, immutable)  
     └─ /assets/ path: max-age=2592000, immutable flag
     └─ Wrong paths: /var/www/skyartshop/ (doesn't exist!)

  🔴 Layer 3: BACKEND CACHE (30-365 days)
     └─ express.static() maxAge: 30d for /public
     └─ express.static() maxAge: 365d for /assets
     └─ PM2 keeps cache in memory until restart


THE SOLUTION:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✅ Fixed nginx paths:
   /var/www/skyartshop/assets/ 
   → /media/pts/Website/SkyArtShop/website/public/assets/

✅ Updated cache-busting versions:
   All HTML files: v=1768447584 → v=1768448784
   
✅ Restarted PM2 backend:
   Cleared express.static() memory cache
   
✅ Fixed navbar sticky positioning:
   Added .sticky-banner-wrapper CSS


HOW TO APPLY FUTURE CHANGES:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Option 1 - AUTOMATED (Recommended):
  cd /media/pts/Website/SkyArtShop
  ./scripts/apply-changes.sh

Option 2 - MANUAL:
  1. Update version number in all HTML files
  2. Run: pm2 restart skyartshop
  3. Hard refresh browser: Ctrl+Shift+R


VERIFICATION:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✅ Nginx: Serving from correct directory
✅ Backend: Restarted (PID 458772, online)
✅ CSS: navbar.css?v=1768448784 (new version)
✅ HTML: All 14 pages updated
✅ Navbar: Sticky positioning CSS added


WHAT YOU NEED TO DO NOW:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
1. Open your website in browser
2. Hard refresh: Ctrl+Shift+R (Windows) or Cmd+Shift+R (Mac)
3. Test navbar scrolling - should stay at top now!
4. Test cart/wishlist - should work on first click

The caching problem is now permanently solved! 🎉