chore: create production-v2 branch with content only

This branch contains ONLY:
- Pages (config/www/user/pages/)
- Themes (config/www/user/themes/)
- Plugins (config/www/user/plugins/)
- PRODUCTION.md
- Minimal .gitignore

Clean slate for production deployment.
All development files, configs, scripts removed.

config/www/user/themes/quark/images/favicon.svg

@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32">
+  <defs>
+    <linearGradient id="grad1" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#2563eb;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#1e40af;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+  <circle cx="16" cy="16" r="14" fill="url(#grad1)"/>
+  <circle cx="16" cy="16" r="6" fill="#f59e0b"/>
+  <circle cx="16" cy="16" r="3" fill="white"/>
+  <rect x="13" y="14.5" width="6" height="3" fill="#1e40af"/>
+</svg>