Enrollment failed because howdy's own config.ini kept device_path=none,
so VideoCapture aborted before ever opening the lens (generic exit 1).
The presence-detect camera setting is separate and never reached howdy.
- add a "Howdy face auth — configure camera" menu entry that writes
device_path into /usr/lib/security/howdy/config.ini
- guard howdy_add: detect an unset/stale device_path and offer to fix it
before enrolling, instead of surfacing howdy's opaque exit 1
- shared camera chooser shows a live still from the selected node via
kitty's icat (gated on KITTY_WINDOW_ID), used for presence + howdy
- support non-IR colour webcams: detect IR vs colour from the preview's
saturation and tune recording_plugin (ffmpeg) + dark_threshold per type
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Amir Alexander Abdelbaki
5f83f10f48