v2.2.9

feat: v2.2.9 — store product ID, is_listed, bundled addon support

- Switch store APIs from slug to numeric product ID for update, license, and download endpoints
- Add is_listed column to ds_products (separate storefront visibility from product validity)
- Add store_product_id to themes/widgets/plugins tables and marketplace_licenses
- Run plugin migrations on addon updates via downloadAndInstall()
- Show "Core Bundled" badge and hide update actions for bundled addons
- Remove CLAUDE.md from repo tracking
- Exclude *Builder.md from release zip
- Fix "extension" terminology to "addon" in language files
- Version bumps for all bundled widgets, themes, and plugins

enlivenapp <mw@enlivenapp.com>