Rewrite the live hand visualizer as a light-blue silhouette with a
crisp dark-blue outline, suitable as the primary hand UI (replacing
the buggy 3D glove for the default flow):
- Palm polygon (landmarks 0,1,5,9,13,17) and five finger tubes merged
via an SVG feMorphology filter, so the outline is a single
continuous ring with no internal seams.
- Q curves bow out to two synthetic wrist corners (perpendicular to
the palm centerline) for a rounded heel of palm.
- Straight L edges between MCPs along the top - the filter dilation
rounds the corners visually, no creux.
- Each finger path starts half a stroke inside the palm so the round
base cap is hidden under the palm fill.
- Whole silhouette shrunk to 65% of the tracked hand size around the
centroid, with 0.8 group opacity, and a faint MediaPipe skeleton
overlay (lines + dots) on top.
Update the static fallback silhouettes (HandTrackingFallback) to a
matching curved-path look in a 100x120 viewBox.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Tom Boullay