- 2026-07-04 repo improvement audit: current proof, findings, and recommended sprint are in docs/quality/REPO_IMPROVEMENT_PLAN_2026-07-04.md.
- 2026-07-04 sprint execution: first-pass results and remaining gaps are in docs/quality/REPO_IMPROVEMENT_PLAN_2026-07-04.md#sprint-1-results.
- Key local result: default pytest 509 passed, 28 skipped, 3 warnings; integration opt-in 5 passed; Black/isort, critical flake8,
git diff --check,python -m build, and wheel asset inspection passed. - What worked: explicit overlap fallback gating, direct Cartesian overlap moments, stale fixture-path repair, blocking Black/isort gates, and
.worktrees/ignore. - What remains: Linux oracle unavailable locally, N2 pure spherical-D shell type
-2skips, 122 advisory flake8 findings, and placeholder scientific APIs still need follow-up.