Three-session plan to release the 8 unreleased commits accumulated on main since
v5.2.0 as v5.3.0, with a fully updated README + CHANGELOG. Session A: gap-matrix
reconciliation + scope decision (operator GO on any new features). Session B:
conditional feature implementation (TDD). Session C: version sync, What's New,
CHANGELOG block, gates, tag, push. Each session has a testable Verifisering
section; key assumptions (non-breaking, docs-gate, number-only readme check)
flagged to test rather than trust. Mirrors docs/v5.2.0-release-plan.md.
