v0.2.0-alpha.3

Added

• Cassini marketing and docs microsite (cassini-microsite/): homepage, changelog page, and docs section with sidebar navigation.
• The Cassini microsite is now published at https://gocassini.codemyriad.io.
• Release tooling for the Nextcloud App Store: a version-ladder CLI
  (scripts/release-version.sh), changelog folder (scripts/fold-changelog.sh),
  local release-prep orchestrator (scripts/prepare-release.sh), App Store
  package builder/validator, and a manual Release workflow that signs and
  publishes gocassini.tar.gz. See docs/release.md.

Changed

• Nextcloud toolbar icon updated to the Cassini brand mark with white fills and a tighter viewBox for correct rendering in NC ExApp containers.
• Viewer restyled with the Saturn theme (ice blue and Saturn gold) and now shows a favicon. A previously saved light/dark choice resets once and follows your system setting until you set it again.

Fixed

• Documentation pages on the microsite now show the site footer.
• The microsite changelog timeline no longer draws a trailing line below the last entry.
• Viewer meeting dates no longer append a timezone (e.g. "GMT+1") they cannot actually justify. Meeting date labels carry no timezone, so a UTC-derived time could be shown an hour off with a wrong-but-confident zone suffix. The viewer now renders the label's own wall-clock time and makes no timezone claim.
• The operator control panel no longer flashes to loading spinners every couple of seconds while watching an active recording. Background refreshes (the 2s polling fallback and event-stream reconnects) now update the jobs list and run detail in place instead of re-showing the first-load placeholder each tick.