feat(ADM-018): completed feature

work/artifacts/F-027/reviewer.json

@@ -0,0 +1,18 @@
+{
+  "feature_id": "F-027",
+  "agent": "reviewer",
+  "verdict": "APPROVED",
+  "summary": "F-027 review approved. Cache module documents entries, supports read-through, invalidates by contract name, and degrades to loader when adapter fails. Metrics expose hit ratio.",
+  "evidence": [
+    "Read work/current.md, architect.md and implementer.md",
+    "Inspected cache domain/application/infrastructure/API",
+    "Verified CacheService.read swallows adapter errors during write so loader fallback works",
+    "Verified contract registry records keyPattern/ttlSeconds/sourceOfTruth/invalidation",
+    "Verified metrics expose hits/misses/invalidations and hitRatio",
+    "gentle-ai review mode status: receipt-driven development off globally, ordinary Orquestra gate used",
+    "cd project && npm run lint/typecheck/build/test passed",
+    "DB integration migrations suite passed: 14 files, 53 tests",
+    "./scripts/verify.sh passed"
+  ],
+  "timestamp": "2026-08-15T19:00:58Z"
+}