When navigating between page types in the unified shop LiveView,
assigns from the previous page could persist and cause stale data
to appear or template errors. Now explicitly nils them out.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace individual shop LiveViews with a single Shop.Page that dispatches
to page modules based on live_action. This enables patch navigation between
pages, preserving socket state (including editor state) across transitions.
Changes:
- Add Shop.Page unified LiveView with handle_params dispatch
- Extract page logic into Shop.Pages.* modules (Home, Product, Collection, etc.)
- Update router to use Shop.Page with live_action for all shop routes
- Change navigate= to patch= in shop component links
- Add maybe_sync_editing_blocks to reload editor state when page changes
- Track editor_page_slug to detect cross-page navigation while editing
- Fix picture element height when hover image disabled
- Extract ThemeEditor components for shared use
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
