Every key shop flow now works via plain HTML forms when JS is
unavailable. LiveView progressively enhances when JS connects.
- PDP: form wraps variant/qty/add-to-cart with action="/cart/add"
- Cart page: qty +/- and remove use form POST fallbacks
- Cart/search header icons are now links with phx-click enhancement
- Collection sort form has GET action + noscript submit button
- New /search page with form-based search for no-JS users
- CartController gains add/remove/update_item POST actions
- CartHook gains update_quantity_form and remove_item_form handlers
- Fix flaky analytics tests caused by event table pollution
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
All shop pages now render as "Page · Store Name" using live_title suffix.
Home stays as "Home · Store Name" for consistency with live navigation.
Updated cart test to use regex for whitespace-tolerant title matching.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
