CardJoy: Greeting Card Maker

### Fixed - **Cleaned up designs with garbled AI text** — six card designs (Mountain Sunrise, Gingerbread House, Lavender Dream, Fun Graduation Party, Sunflower Cheer soup, Navy & Gold Dad) had misspelled or nonsense words baked into the artwork. They're now text-free or correctly spelled, so your own message is the only wording on the card. - **Shared links are caught by the preview worker more reliably** — the `c.cardjoy.me` worker now recognizes both short and canonical card paths, handles sparse messenger preview headers, and exposes a health/version check so deploys prove the subdomain is actually running the right worker. - **Shared card links show a real preview again** — links now use `c.cardjoy.me`, so Messages, WhatsApp and social apps unfurl the card's design, title and sender instead of a plain link. - **More reliable share previews** — the share worker now verifies its custom-domain binding and crawler metadata in the deploy job, so broken preview routing is caught before links go out. - **Crawler previews authenticate correctly** — fixed the share worker's publishable backend key so crawler metadata returns card-specific OG tags instead of falling back to a plain redirect. - **Safer share fallbacks** — if card metadata is temporarily unavailable, crawlers still see a branded CardJoy preview instead of an empty page, while deployment checks still require the real card preview. ### Added - **A warm welcome for new accounts** — signing up now opens a short setup flow: a welcome beat, a quick "what do you send most" pick, your first person (with an optional birthday for reminders), and a preview of the card you're about to make. Skippable at any point. - **Native iOS share sheet** — sharing a card from the iOS app now opens the system share sheet (Messages, Mail, AirDrop, etc.) for a true native feel. - **Haptic feedback** — gentle taps when you finish creating a card or share it from your iPhone. - **Push notifications setup** — the app now asks permission and registers your device so we can notify you when someone opens or replies to your card. - **Full account deletion** — Settings → Delete Account now permanently removes your account and all data (previously only cleared rows but left the login behind). ### Changed - **Clearer consent step when texting a card** — replaced the SMS disclosure line with a quick "I have permission to text these recipients" checkbox right above the Send button.