Reconcile v0.9.1 external closure

[xeonvs]

Summary

• accept GitHub's state=open,state_reason=reopened shape for tracked release issues while preserving strict PR, closure, and incompatible-reason rejection
• record the failed-safe v0.9.1 publication attempt and successful exact-identity recovery
• reconcile independently verified immutable Release, registry/provenance/attestation/install, issue, milestone, and branch evidence
• advance only .release-reconciled-version; do not publish or mutate another stable release

Validation

• scripts/quality.sh check — 1,538 tests + 408 subtests, 86.40% coverage, all risk floors and repository gates passed
• scripts/gitleaks.sh — passed
• workflow/TestPyPI/PyPI/GitHub Release distributions — byte-identical
• TestPyPI/PyPI PEP 740 provenance and GitHub attestations — verified
• clean PyPI version/CLI smoke — Python 3.12.14, 3.13.4, 3.14.7
• focused release receipt matrix — passed
• no OCR or Codex Security rerun; retained OCR evidence remains preserved

Release impact

no-release: v0.9.1 artifacts, tag, immutable Release, receipt, stable metadata, runtime, and package behavior are unchanged.