feat(carwash): review outbox, booth side — plate-blurred vehicle crop + the operator's choice, queued for a trusted remote reviewer

The operator's category choice is a hypothesis, not truth (user, 2026-09-06): each wash
order with a vehicle read queues a package for a trusted reviewer over the private overlay
(Netbird); the verdict becomes the phase-B training label and the per-operator error rate.
wiki/concepts/vision-review-outbox.md.

- Boxes: the vision service returns the vehicle bbox; snapshot.ts stores the vehicle and
  plate boxes on the read as FRACTIONS of the analysed frame (the stored snapshot is a
  downscaled copy); vehicleForIdentity() returns them.
- carwash_review_outbox (migration 0031) + review-outbox.ts: crop = detector box + 8 %
  margin, ≤ 640 px, plate blurred in place from the plate box; payload carries a
  pseudonymous booth id and a keyed operator hash — no site name, no plate, no OSD, no
  bystanders; multipart POST with a per-booth bearer; 2xx → sent (image dropped);
  400/404/413/415/422 → abandoned; anything else → backoff 1 min·2^n capped 6 h; voided
  orders and items older than 14 days abandoned unsent. Nothing queued while unconfigured.
- Enqueue is fire-and-forget off the intake path in createOrder; the loop runs every
  CARWASH_REVIEW_INTERVAL_SEC (60) and stops on close.
- GET /api/carwash/review/status (site:read) + a "Remote review" line in Setup → Car wash.
- Env CARWASH_REVIEW_URL / _TOKEN / _BOOTH_ID (all three or off) documented in
  .env.example and forwarded by compose.
- Tests: review-outbox.test.ts (crop + blur on a synthetic frame, config/pseudonyms,
  queue/drain/backoff/abandon, through the app). Wiki: new concept page, index,
  venue-modules As built, log. The collector is not built.

Claude-Session: https://claude.ai/code/session_01FWncR69HgGPuei1dLrW3cU

docker-compose.yml

@@ -28,6 +28,11 @@ services:
       # off (the in-UI target + retention do nothing without it). Per-booth + unique; escrow it
       # offsite. See apps/server/.env.example + wiki/concepts/backup-recovery.md.
       BACKUP_KEY: ${BACKUP_KEY:-}
+      # Car Wash review outbox: collector URL + per-booth token + pseudonymous booth id, all
+      # three or off. See apps/server/.env.example + wiki/concepts/vision-review-outbox.md.
+      CARWASH_REVIEW_URL: ${CARWASH_REVIEW_URL:-}
+      CARWASH_REVIEW_TOKEN: ${CARWASH_REVIEW_TOKEN:-}
+      CARWASH_REVIEW_BOOTH_ID: ${CARWASH_REVIEW_BOOTH_ID:-}
       # CRITICAL on the plain-HTTP booth LAN: cookies are Secure (HTTPS-only) by DEFAULT,
       # so without COOKIE_SECURE=0 the auth cookie is never sent over http and operators
       # CANNOT LOG IN. Leave unset only behind TLS. See disk-os-hardening "deploy-time runbook".