0.4.0

release: 0.4.0

Two format versions in one app release, because they arrived together and neither
is useful without the reader knowing about it.

Pack format 0.7.0: media.displays is always present, so N screens stops being a
special case a reader can forget to ask about. 0.8.0: the timeline records mouse
and window movement — and never a keystroke, which is the part of this release
worth saying in a user's own language rather than as a technical footnote.

Version, ROADMAP baseline, the nine READMEs, the site in nine languages, the site
validator's release pins, docs/README.md and the handoff move together.

The v0.4.0 milestone is empty. Three issues that the format work made READABLE but
could not PROVE moved to a new milestone named for what they are actually blocked
on — #76 needs three real screens, #134 needs a picking threshold argued from
measurement, #135 needs a CI pack whose keyframes were rendered. None of them is
blocked on code, and filing them under a version number would have read as "not
done yet" rather than "waiting on evidence this desk cannot produce".

Public state in the handoff still names 0.3.5 — true until the release workflow
finishes, and filled in from the published artefacts afterwards.

Gate: PASSED, 0 failed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>