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/scss/spectre-exp.scss

@@ -0,0 +1,19 @@
+// Variables and mixins
+@import "theme/variables";
+@import "spectre/variables";
+@import "spectre/mixins";
+
+/*! Spectre.css Experimentals v#{$version} | MIT License | github.com/picturepan2/spectre */
+// Experimentals
+@import "spectre/autocomplete";
+@import "spectre/calendars";
+@import "spectre/carousels";
+@import "spectre/comparison-sliders";
+@import "spectre/filters";
+@import "spectre/meters";
+@import "spectre/off-canvas";
+@import "spectre/parallax";
+@import "spectre/progress";
+@import "spectre/sliders";
+@import "spectre/timelines";
+@import "spectre/viewer-360";