PH — The closure plan flagged genuine residual gaps to fix before release

The closure plan flagged genuine residual gaps to fix before release: Alembic migrations were declared but used create_all directly, .pre-commit-config.yaml was missing, CI triggered only on main, and the README-claimed v2.0.0 tag did not yet exist (latest was v0.10.0-rc.1).

Source: PUMA project documentation · Traceability: corpus unit PHASE-026 · Confidence: repo-backed