Add shared artifact-tag normalization/validation and apply it to capture, drift, and prune scripts for --tag/--report-tag/--baseline-tag paths. Architecture diagrams reviewed; no flow changes required.
Add optional reaction match-drop and skip-increase drift thresholds, expose CLI flags, and enable conservative defaults in cadence package scripts. Includes tests and docs/state sync.
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.
William Valentin