Replace one-off ShopLive.About with generic ShopLive.Content that
handles all static content pages via live_action. Add delivery &
returns, privacy policy, and terms of service pages with sample
content. Update footer help links and theme editor preview.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add sort functionality to /collections/:slug pages with 6 sort options
(featured, newest, price ascending/descending, name A-Z/Z-A). Sort
selection persists across category navigation via URL query params.
Refactor handle_params to be DRY using load_collection/1 helper.
Add comprehensive unit tests for PreviewData category functions and
LiveView tests for the Collection page sorting and navigation.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
