Conflict only in docs/parity-checklist.md: the generated summary is
refreshed with `cargo xtask parity --write`, and the Last updated line
keeps main's format with this PR's change note (today's date) instead of
the duplicated note the branch carried. ⌥-drag preview still wins over
AllMasks and the selected mask in view_overlay; overlay kinds 6–9 unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>