Replay left the 3D pane on the rest mesh or a sparse overlay, and Analyze skipped the setup dialog unless the file was re-picked. Live Run no longer starts a chain on a video path. Verified with Studio tests for flush, overlay mask, Analyze open, live-video refusal, and locales.
The selector returned only the arrows it would draw, so a view could not draw
anything at a quiet sample and the below-threshold branch was unreachable. It
now returns every candidate location plus an `active` flag, both callers filter
on it, and the magnitude colour ramp is fixed so one magnitude is one colour
across frames. Verified by pixel parity against HEAD for the 2D canvas and the
3D overlay, and by the shared and studio suites.
The tracker reset was decided by which panel was on screen rather than by the
session, the automatic colour range moved the 3D surface's base colour on the first
press, and the 2D canvas and the 3D overlay applied different flow thresholds (622
arrows against 432 on a real recording). ui_check 600/0; apps/studio 380 items and
shared 390 items with no failures; real-GL 18 items, only the pre-existing
colour-scale failure; AutoCal 358 passed; both views now select identical arrows on
all 42 frames of a real video.
ykcheungab