feat(F-109): completed feature

work/artifacts/F-109/reviewer.json

@@ -0,0 +1,11 @@
+{
+  "feature_id": "F-109",
+  "agent": "reviewer",
+  "verdict": "APPROVED",
+  "summary": "SKU is fully auto-generated (SKU-MV-<productId>) and removed from every admin editing surface; supersedes the F-100 title-based SKU idea.",
+  "evidence": [
+    "No SKU input or column remains in product editor or inventory",
+    "Default variant SKU assigned server-side at product creation and via lazy migration"
+  ],
+  "timestamp": "2026-08-21T08:00:04Z"
+}