App Store readiness

The submission checklist is now concrete.

The codebase has the safe foundation. The remaining items are Partner account, migration, billing, and live development-store testing work.

App Home renders in Shopify admin

App Bridge and Polaris scripts are loaded

Theme app extension scaffold exists

OAuth install start route exists

OAuth callback HMAC verification exists

Session-token verification endpoint exists

Webhook HMAC verification endpoint exists

Offline token storage is encrypted

Shop/install/settings tables are applied

Shopify billing plan is configured

Development store install is tested

Compliance webhooks are registered in app configuration

App Store listing, screencast, and test notes are prepared