Estate licence cascade (PMPL -> MPL/CC-BY-SA axis) — per HANDOFF

[hyperpolymath]

Owner/PLASMA domain. Full plan in dev-notes/estate/licence-remediation-2026-06-22/HANDOFF.adoc.

• palimpsest-license PR Wave 5: Nix-mirror retirement (conative-gating…excel-economic-numbers-tool) #110 (quantum-safe badge) — review/merge
• a2ml-estate-normalizer PR chore(deps): bump actions/checkout from 4 to 6 in the actions group #1 — review/merge (generator tap fixed)
• ~11k PMPL headers / ~200 repos — regenerate-from-fixed-generators, not hand-sweep
• axis-aware pre-commit hook propagation + canonical tracked source
• LICENCE-POLICY.adoc Rule 2 narrowing (PMPL -> palimpsest-license only)