Adds a per-letter vinyl text add-on tied to the Custom Vinyl Square item.
Customers pick a balloon shape (Heart/Star/Circle), type their message
(max 30 non-space chars, ASCII only — no emoji), and choose from 8 Google
Fonts rendered as live previews. Price updates in real time at $0.65/letter.
At checkout, vinyl orders expand to two Square line items: the 18" Shape
balloon at its catalog price and the Custom Vinyl service at the calculated
letter count price, with the font attached as a modifier.
Also adds a per-item admin toggle ("Suggest custom vinyl add-on") that shows
a promo note on any balloon's product modal pointing customers toward the
vinyl service.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Security:
- Replace raw password cookie with HMAC-derived session token + constant-time compare
- Add rate limiting (5 attempts / 15 min) to admin login
- Atomic JSON writes via file-utils to prevent corruption on crash
- Tighten CSP headers; add Square CDN to style-src and font-src
- WebP conversion + 20 MB limit on admin image uploads
Checkout reliability:
- Delayed capture flow: pre-auth → calendar write → capture (never charge without booking)
- Derive payment idempotency key from SHA-256(nonce) to prevent nonce/key mismatch on retry
- Idempotency key persisted in localStorage; auto-retry on network failure
- Idempotent CalDAV writes using orderId-based UIDs; treat 412 as success
- User-friendly Square error messages instead of raw API detail strings
UX:
- Welcome modal + 5-step guided tour with spotlight and scroll-into-view
- Balloon release agreement checkbox required before payment
- 24-hour lead time enforced server-side in both delivery and pickup slot generators
- Fix Square card form race condition with double-rAF before attach()
- Tour hides Bulma modal-background for bright, unobscured modal steps
Notifications:
- Improved SMTP error logging; re-throw on failure so callers see it
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
