feat(F-094): completed feature

work/artifacts/F-094/reviewer.json

@@ -0,0 +1,14 @@
+{
+  "feature_id": "F-094",
+  "agent": "reviewer",
+  "verdict": "APPROVED",
+  "summary": "Publish now contains a clear variant workflow backed by the existing create/list endpoints, and empty states point to a real action.",
+  "evidence": [
+    "VariantManager explains sellable variants, SKU, and EAN",
+    "Create form uses SKU required and EAN optional",
+    "Successful creation updates the list without reload",
+    "Duplicate API conflicts are shown to the operator",
+    "Pricing and Inventory messages no longer reference a missing UI"
+  ],
+  "timestamp": "2026-08-20T20:01:10Z"
+}