PH — The implementation contract enforced spec-first development, per-phase…
The implementation contract enforced spec-first development, per-phase verifiable gates (green tests + smoke + manual check), aggressive conservation (no deletion of working code without justification), determinism by default (integration tests fail on non-reproducibility), and Conventional Commits referencing task IDs.
Source: PUMA project documentation · Traceability: corpus unit
PHASE-022· Confidence: verified-at-primary-source