HandPersistenceGate (min_frames=3, radius=0.15) suppresses ghost
hands that flash for fewer than min_frames consecutive frames.
Gate is called once per frame in the renderer on persons_hands;
result filters both the video overlay loop and the side panels.
hand_plausible now rejects wrists outside [-0.1, 1.1] (out-of-frame
ghost anchor check). panel_segments gains a conf_min param.
Env knobs read at renderer init (single parse, no per-frame cost):
HAND_CONF_MIN (default 0.45, raised from 0.3)
HAND_PERSIST_FRAMES (default 3)
ARKIT_BONE_MAX (default 0.5, passed to arkit_segments)
New tests: 12 gate tests + 4 wrist-bounds tests.
L'électron rare
5bfc63f86d