Prepare opt-in Anti-Dark-Code preview metadata and validation evidence

[LynxTWO]

The current listing subtitle exceeds the directory limit, and the next preview needs a distinct version without weakening historical release verification. Prepare 2026.10.14-unified.19, shorten the new listing subtitle, preserve metadata for releases through unified.18, and refresh the existing version labels, field brief and provenance.

Skill instructions, approval requirements, status semantics and verification capabilities are unchanged. Existing plugin metadata and the canonical calendar version stay synchronized. Local evidence records both native host upgrade/rollback checks, actual generated-document workflows and consumer calibration/approval preservation, including upgrade from the published unified.18 archive.

Validation before push:

• Initial full suite: 757 passed, one stale-version-label failure, eight Windows-only skips and 703 passing subtests. The label failure was corrected and passed its targeted retest.
• Packaging regression retest: 11 passed, with three passing subtests. Universal/distribution validation, strict Claude metadata and both current/historical tagged release checks pass.
• Managed consumer upgrades and rollbacks preserved project knowledge, approvals and gate bindings; mismatched digests were refused before mutation. Stable installed copies were restored.

CI: Tests run 38646697945 passed on commit 00bef3a2229a2e8902fb91ed10d7112d5edbc9ff. All 14 jobs succeeded, including the required aggregate and PR-only shadow evidence check.

• Linux Python 3.12/3.13 and macOS Python 3.12: each reports 758 passed, eight skipped and 703 passing subtests.
• Windows Python 3.12: 761 passed, five skipped and 707 passing subtests. These platform suites test the final candidate and supersede the earlier local stale-label failure. Skips remain skips; individual skip reasons were not printed by these CI commands.
• Clean distribution archive and both hostile-environment jobs passed. All four mutation shards passed, covering all 158 distinct matrix IDs against their recorded expectations, including six superseded rows. This does not mean every historical mutant was independently caught on this replay.

The dated source evidence preserves the earlier native host results and their limits; CI does not establish human comprehension or native GUI installation on Windows/Linux.

Plugin publication remains on hold. No release tags, GitHub releases, directory submissions or stable catalog updates are authorized here. The owner has now authorized merging this source PR while continuing to hold plugin publication. The opt-in catalog bundle remains in the local handoff pending release approval; no released tag or directory listing is promoted by this merge. Existing dated local-preparation records describe their pre-push state.

Review: no blocking findings in the changed source, metadata, tests, brief/provenance or workflow triggers. No unresolved review threads. Main is development source: an unpinned catalog checkout follows that source, so released/stable installations should remain pinned to a reviewed revision. No automatic plugin-release workflow is configured; the existing GitHub Pages documentation build may run after merge.

Post-merge verification: merged as e2091631f1ab82161cfa3ea170cc4afdd478591d; its file tree exactly matches reviewed head 00bef3a2229a2e8902fb91ed10d7112d5edbc9ff. Tests 38649172745 passed all 13 executed jobs, including platform suites, all four mutation shards and the required aggregate. The PR-only shadow job was intentionally skipped on the push event. Pages 38649172231 passed all three jobs.

Post-merge suite results: Linux 3.12/3.13, macOS 3.12 and international-path environment each report 758 passed, eight skipped and 703 passing subtests. Windows reports 761 passed, five skipped and 707 passing subtests. C-locale environment reports 757 passed, nine skipped and 703 passing subtests, matching its earlier PR-run counts; individual test skip reasons were not printed. No source fixes were required. No release tags, plugin releases, release assets or directory submissions were created.