feat(ADM-018): completed feature

work/artifacts/F-016/security.json

@@ -0,0 +1,16 @@
+{
+  "feature_id": "F-016",
+  "agent": "security",
+  "verdict": "APPROVED",
+  "summary": "Security approved. No new dependencies or secrets were introduced. Inventory mutations require admin authentication, inputs are validated with zod, SQL uses parameterized queries, and database constraints prevent negative stock even under persistence-layer corruption attempts.",
+  "evidence": [
+    "cd project && npm audit --audit-level=high --omit=dev: found 0 vulnerabilities",
+    "Secret scan over project/src/modules/inventory, project/migrations/011_inventory.js and project/src/app/tests/inventory.itest.ts found no credentials",
+    "Reviewed inventory routes: stock mutations require authenticated admin role; availability read exposes only stock availability counters",
+    "Reviewed validation: variantId is z.uuid(); quantities are coerced/validated as positive or non-negative integers before use",
+    "Reviewed repository SQL: all dynamic values are parameterized; no user input is interpolated into SQL text",
+    "Reviewed migration: inventory_stock CHECK constraints enforce non-negative counters at database level",
+    "No new runtime dependency added"
+  ],
+  "timestamp": "2026-08-15T16:15:35Z"
+}