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)

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⚠️ CORRECTION 2026-08-25 — the referenced PR is unreachable

hyperpolymath/a2ml-estate-normalizer does not exist (gh repo view → 404). Any step in this issue pointing at "PR #1" in that repo cannot be actioned as written; the destination must be named before that work can start.

Already done: palimpsest-license PR #110 merged 2026-06-22, and LICENCE-POLICY.adoc Rule 2 is already narrowed to exactly three repos.

Genuinely remaining: the ~11k licence-header regeneration and the hook propagation.