feat(POS-016): completed feature

work/artifacts/POS-016/architect.md

@@ -0,0 +1,11 @@
+# POS-016 — Architect
+
+## Feature
+POS Phase 2/3 ticket 016: User roles + audit log + catalog sync + time tracking + barcode lookup.
+
+## Endpoints
+- GET/POST /pos/users — list/create POS users
+- GET /pos/audit-log — POS audit log
+- POST /pos/catalog/sync — trigger catalog sync
+- GET /pos/time-tracking — employee clock-in/out by session
+- GET /pos/barcode/lookup — universal barcode (EAN/SKU) lookup