Car Wash — the pilot venue module (wiki/decisions/venue-modules.md):
- Master data (categories × services price matrix) at /setup/carwash; the desk at /wash
(ticket lookup → order; open queue oldest-first: Done / Paid cash / Paid card / Void;
Finished list). Orders freeze names + price; their life is signed (carwash_order,
carwash_payment). Migration 0027.
- Where money is taken is a SITE setting (carwash_config.pay_at, migration 0028, signed
config_change on a flip) — no per-order radio; a stale client is refused (409).
- Core seams: PayStation charge providers (a booth-paid wash rides the parking payment as
chargeLines) + applyValidation() shared with the merchant route. A bay-paid, done wash
signs the $0 parking payment so the exit reader releases the car.
- "Parking discount" modes for the wash: free while the wash runs (+ tolerance) and wash
price off the fee (floored at 0), resolved at done and anchored at the order's intake
(the entry-anchored version comped a 74-day stay); typed-amount and percent hidden for
the wash. Long durations render y/d/h/m.
Tills — a shift belongs to a till, not the site (wiki/concepts/shift.md §Tills):
- TillId booth|carwash; every money event names its till (absent = booth, so the chain
re-folds identically). ShiftService is per till: single-open, folds, X/Z-reports,
vouchers, carry-forward. A bay payment needs the carwash shift.
- Working a till needs that till's module permission (manifest tillPermission; 403
till_forbidden); /api/shift/tills lists only the role's tills.
- Web: ShiftButton per till (header = booth, wash desk = carwash); shift hub lists every
open shift with till badges + filter; drawer hub switches tills.
Modules: landing per module (index route resolves booth → module landing → shifts →
profile); guards bounce to "/", /booth needs session:read.
Tests: carwash e2e suite (settings, intake, booth/bay paths, modes, void, gate, pay-at
policy, till permissions), 6 per-till shift tests; suite green (1 pre-existing flaky
backup test under the parallel run).
Claude-Session: https://claude.ai/code/session_01FWncR69HgGPuei1dLrW3cU
Groundwork for the Car Wash pilot (wiki/decisions/venue-modules.md, build-order
steps 1 + 3). No Car Wash code yet; validation is the first module behind the
seam, unchanged in behaviour.
- @parking/shared: MODULE_IDS, ModuleManifest, MODULES (parking required;
validation dependsOn parking), parseEntitledModules / resolveModuleActivation
/ effectiveModules as pure functions.
- DB: site_config.modules_json (migration 0026, hand-written + journal;
additive, nullable = everything entitled).
- Server: modules.ts (entitledModules from MODULES_ENTITLED env, activated
from site_config, effective set, requireModule preHandler → 403
module_disabled); modules/index.ts registers folder-based modules by
iterating the registry (modules/validation); site-config GET exposes
modules/modulesEntitled/modulesActivated, PUT takes the full desired set,
enforces entitlement + dependency rules (400 with reason) and signs one
config_change per module that actually flips; /api/auth/me carries the
effective set; validation routes guarded requireModule → requirePermission.
- Web: lib/modules.ts + modules/{index,validation}; router.tsx spreads
WEB_MODULES into nav + route tree (validate route no longer named there);
Setup → Site "Modules" panel (required shown disabled, dependencies as
hints, server refusal shown verbatim); validation sections + programs fetch
gated on the module; App invalidates the router whenever the session
changes (route-context consumers only re-read on navigation — the nav was
stale after a flip, and after every other setUser too).
- Lavazh validation station retired (STATIONS = ["bar"]; rows untouched).
- Deploy: MODULES_ENTITLED=parking,validation explicit in both booth stacks;
documented in .env.example.
- Tests: modules.test.ts (7); suite 329/329; web build clean; Playwright
round-trip on /setup/site verified live.
Claude-Session: https://claude.ai/code/session_01FWncR69HgGPuei1dLrW3cU
julian