PoseDetectionCanvas polls /api/v1/pose/stats every 30 s. When
model_loaded === false (the default — no trained pose model present),
the canvas is hidden and a "No trained pose model loaded" overlay
explains why, pointing the operator at the Sensing / Hardware tabs
for the channels that are still active.
renderPoseData() also short-circuits on modelLoaded !== true so any
WS frames that slip through during the poll interval can't paint a
misleading skeleton.
Closes the last Open Item in ADR-105.
Co-Authored-By: claude-flow <ruv@ruv.net>
2dcb30a6de