fix(audit): require integer drift minimum sample thresholds

Enforce non-negative integer minCandidateSampledEvents/minBaselineSampledEvents in drift gate evaluation and CLI parsing; add regression coverage. Architecture/protocol diagrams reviewed and no updates were needed for this validation-only change.
2026-02-27 13:16:00 -08:00
parent a4794ddea8
commit bf79f734f1
4 changed files with 89 additions and 6 deletions
@@ -507,6 +507,19 @@
      ],
      "test_status": "pnpm test:run src/audit/phase0BaselineSummary.test.ts + pnpm typecheck passing"
    },
+    "phase0-live-baseline-drift-min-threshold-integer-validation": {
+      "status": "completed",
+      "date": "2026-02-27",
+      "updated": "2026-02-27",
+      "summary": "Hardened phase-0 backend drift gating by requiring `minCandidateSampledEvents` and `minBaselineSampledEvents` to be non-negative integers in both gate evaluation and CLI parsing, preventing fractional count thresholds.",
+      "files_modified": [
+        "src/audit/phase0BaselineDrift.ts",
+        "src/audit/phase0BaselineDrift.test.ts",
+        "scripts/check-phase0-baseline-backend-drift.ts",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/audit/phase0BaselineDrift.test.ts + pnpm typecheck passing"
+    },
    "phase0-instrumentation-ticket-checklist": {
      "status": "completed",
      "date": "2026-02-25",