The tariff-bridge owed amount summed TWO charges — the early-entry gap +
a "late-exit" gap — and the exit gap (outOfWindowGap edge:"exit") always
measured back to the PREVIOUS window close, even for a subscriber still BEFORE
their window. So a car that entered ~30 min early showed ~12h owed (4,100 ALL)
the moment it was looked up, instead of ~100 ALL.
Replace the two-gap sum with a single correct primitive,
minutesOutsideWindow(timeframes, tz, from, to): the minutes within the actual
stay [entry, now] that fall outside the allowed window (covering early entry AND
late exit, bounded by the stay, weekend/off-days free). windowOwedBetween prices
those minutes once as a transient stay (so increments + daily cap apply) against
the tariff in force at entry. Both the exit gate (subscription-flow) and the
booth quote (pay-station) now use this one source of truth — they can't disagree.
Verified on the live occurrence: was 4,100 ALL, now 100 ALL (9 min outside →
one increment). 87 shared tests (6 new regression cases incl. the phantom span).
Build+lint 12/12.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Three subscriber enhancements driven by real scenarios (migration 0011, all
additive columns — backward-compatible).
1. QUANTITY. One subscription covers N cars (a family pays once for two). Sale
amount = span price × quantity; maxConcurrent defaults to the quantity so all
N cars can be inside. Quantity rides in the payment payload.
2. PLAN TIMEFRAMES → TARIFF BRIDGE. A plan may restrict WHEN a subscriber may
park (e.g. weekday 20:00→08:00, weekend all-day). A scan outside the window is
NOT refused — the out-of-window minutes are charged at the normal TRANSIENT
tariff (the subscriber is a transient for that time):
- early entry: arrival → window-open, DEFERRED (signed as windowOwedMinor on
the vehicle_entry payload), collected at exit;
- late exit: window-close → departure, and exit is GATED
(sub.refused.unpaidWindow) until paid at the booth.
Pure, tz-aware outOfWindowGap in @parking/shared (12 unit tests); pricing
reuses computeFee + the active tariff version
(apps/server/src/subscription-window.ts). The exit refusal is a host-ONLINE
business gate — the fail-open rule still governs the offline path.
3. RESERVED SPOTS. Site toggle reserve_subscriber_spots: occupancy holds
max(0, quantity − itsCarsInside) per active subscription, so transients see
"full" sooner; effectiveFree = capacity − count − reserved. Subscribers are
never gated by full.
UI: quantity field + ×N quote (SubscriptionManager); timeframes editor
(SubscriptionPlansManager); reserve checkbox (SiteSettings); booth pay modal
shows an "OUT-OF-WINDOW" charge and takes payment to clear the exit gate.
Verified on a copy of the live DB: qty 2 = 2× price; a night-plan 19:30 entry →
30min/15,000 ALL owed, stamped + paid → gate clears, chain verifies; the reserve
toggle holds a qty-2 sub's 2 spots. Build+lint 12/12; 80 shared tests pass.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
julian