Berth nightly 2026-10-27 (46b54f4)

Automatic build of berth at 46b54f4 (nightly nightly-20261027-46b54f4).
A development build, not a release: for the current release see the latest vX.Y.Z release.

Changes since the previous nightly (6c28c14..46b54f4, 2 commits)

46b54f4 docs: drop links to the removed next-session notes
48ab52b docs: standardise README and docs layout