Follow-up to the #39 fix in d274275, which mara reports still doesn't
scroll in practice.
The bug: overflow-y: auto and justify-content: flex-end on the *same* flex
column is a known WebKit/Safari interop gap — the flex-end-justified
overflow gets clipped at the container bounds instead of becoming a
scrollable region, so nothing actually changed from the user's side despite
the CSS being 'correct' per spec. This app targets iOS Safari 12+
(vite.config.ts legacy targets), squarely in the affected range.
Fix: split the concerns onto two elements. .cart-items is now a plain
overflow-y: auto scroll container with no alignment property. The new
inner .cart-items-inner wrapper carries display:flex/flex-direction:column/
justify-content:flex-end, with min-height: 100% (a floor, not a fixed
height) so it still bottom-anchors a short list but grows past 100% and
scrolls normally in the outer container once content overflows it.
Build clean.
The server dedupes on client_uuid, but the tablet minted a fresh uuid
on every confirm() call — including retries after a timeout/dropped
connection, exactly the case the idempotency key exists to guard
against. The dedup check never fired on a real retry, so a flaky-Wi-Fi
resend could book the same sale twice.
Client: generate one uuid per pending cart (a ref, lazily created),
reuse it across retries of the same submission, reset it only when
the cart is cleared (success or cancel) so the next cart gets its own
id.
Server: the existing-row dedup check and the insert straddled the
db.transaction() boundary, so a genuine UNIQUE-violation race would
have surfaced as a raw 500 instead of the idempotent response. Catch
that specific violation and fall back to re-reading the row.
Cart entries (drink lines and Pfand-zurück) now have +/- buttons next
to the quantity instead of only accumulating via repeated taps;
decrementing to 0 removes the line. Long-pressing a drink tile opens
a small overlay with buttons 1-5 to add that many at once — a plain
tap still adds one. The long-press timer is cancelled on pointerup/
leave/cancel, and the click that follows a fired long-press is
swallowed so it doesn't also add a plain 1x.
- favicon.svg (beer mug), linked from both entry points and shown in
the tablet topbar next to the bar name
- inline data-theme in <head> kills the flash of dark on light-mode load
- hide the "Pfand zurück" tile when the bar has no Pfand
- show drink price and Pfand separately on tiles and in cart
- add light/dark toggle on the bar-picker page (persisted)
- theme via CSS variables, applied on load for tablet + admin
- larger, bolder text throughout; much bigger total sum
