[transitrix-foundry]

What changed

Prepares Methodology 6.0.0 with aligned release pins, notation revisions, compatibility notes, and the 5.1 → 6.0 migration recipe. KS-019 remains an error for incomplete admitted supersession pairs and a warning for a draft proposal. The rule table and knowledge-store skill floor now match that contract.

The migration updates only the manifest pin; curator-reviewed pointer repairs and other compatibility checks are documented separately. Its post-check uses the reference knowledge-store linter. Release notes are in CHANGELOG.md under 6.0.0.

How it is verified

• Notation/version drift, notation unit tests, release-obligations tests, workflow references, and skill-cheatsheet checks pass.
• Migration tests cover dry-run, idempotence, byte preservation, invalid pins, and rejection of an incomplete admitted supersession pair. Migration and supersession checks run in knowledge-store CI.
• Knowledge-store integrity, supersession, freshness, ingest/onboarding integrity, candidate admission, catalogue promotion/workflows, documents integrity, and document-view-engine suites pass.
• The broader ingest unit run passes 152/154 tests. The same two failures reproduce on the unchanged base: batch-path.test.mjs hard-codes 20260827, and privacy-scan.test.mjs expects undefined instead of null for redactedText. Neither test nor implementation is changed here.
• Notation lint retains four existing advisory warnings.

Checklist

• Based on main, one release concern.
• Commits carry DCO sign-off.
• Changed content and PR metadata reviewed for public-surface hygiene.