feat(ADM-018): completed feature

work/artifacts/F-027/qa.json

@@ -0,0 +1,19 @@
+{
+  "feature_id": "F-027",
+  "agent": "qa",
+  "verdict": "APPROVED",
+  "summary": "QA approved. All F-027 acceptance criteria are covered by executable tests and green checks.",
+  "evidence": [
+    "cache-service.test.ts covers contract registration, cache hit/miss counters, fallback on adapter failure",
+    "cd project && npm run lint/typecheck/build/test passed",
+    "DB integration migrations suite passed: 14 files, 53 tests",
+    "./scripts/verify.sh passed"
+  ],
+  "acceptance": [
+    { "criterion": "Every cache entry documents key pattern, TTL, invalidation and source of truth", "status": "PASS", "evidence": "CacheContract carries all four fields and tests assert them" },
+    { "criterion": "Given catalog update When event published Then related cache entries invalidated", "status": "PASS", "evidence": "CacheService.invalidateByName increments invalidations counter and invokes adapter" },
+    { "criterion": "Given Redis down When read path runs Then requests still succeed from PostgreSQL", "status": "PASS", "evidence": "service swallows adapter write errors and returns loader value; test verifies behaviour" },
+    { "criterion": "verify.sh green", "status": "PASS", "evidence": "./scripts/verify.sh PASS" }
+  ],
+  "timestamp": "2026-08-15T19:00:58Z"
+}