Add a dismissable welcome modal that walks first-time users through the
proper annotation sequence (slider to end → check open ROIs → slider to
start → arrow-key fine-tune → click). Stays hidden after the first
"Got it" via localStorage; the ? button in the header reopens it any
time. Picker keyboard shortcuts are inert while the modal is showing.
Container exposes 8085 instead of 8000 (8000 was free, but Giorgio's
preferred 8082 is already in use on this host; 8085 is the closest
free port). Internal port stays 8000 so the FastAPI app is unchanged.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
A FastAPI app + plain HTML5 video page that replaces the matplotlib
picker. Browse to http://host:8000/, scrub through each video with
arrow keys (±5 s, ±1 s with Shift, ±0.1 s with Ctrl, ±1 frame with
,/.), and click one of three buttons:
- All barriers open — every ROI usable
- Upper barrier opens — ROIs 1,3,5 usable; lower row marked bad
- Lower barrier opens — ROIs 2,4,6 usable; upper row marked bad
The current playhead time is recorded as opening_s; bad_rois is set
accordingly. Also keyboard shortcuts (1/2/3 for the three modes,
s/u for skip/unusable). Refresh-safe: every submission persists to
data/metadata/barrier_opening.csv before advancing.
Server uses byte-range streaming so seeking inside long videos is
fast. Dockerfile + docker-compose.yml mount the data volume RO and
the metadata folder RW.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
