VIZ_DEFAULT_MODE=<name> boots the viz on that mode and disables the
auto-openpos switch entirely, so the mode is truly always active (user
request: the t-key voronoi effect permanent). Concert launcher defaults
to voronoi; "auto" keeps the historical behavior.
qsdfghjkl fired auto-synth scenes on stray keypresses during matrix
performance — same gate as wxcvbn (VIZ_AUDIO_KEYS=1 re-enables). The
m matrix-mode shortcut (scene stop + openpos) stays active.
Live session outcomes: (1) pinch thresholds validated for inner
fingers frozen as defaults (ratio_on 0.50, margin 0.05, ext_min 1);
(2) panel frames + X/Y gauges now permanent (no early-return when
nothing is detected); (3) wxcvbn source-bundle shortcuts gated off by
default (VIZ_SOURCE_KEYS=1 re-enables) — a stray key mid-performance
switched the audio scene.
Add hand_facing() palm-spread metric (dist(kp5,kp17)/hand_size).
Gate GestureSlotStabilizer slot activation on facing >= HAND_FACE_MIN
(default 0.5) with 0.8x hysteresis; side-on palms no longer arm
pinch/strike. Add VizConfig.hand_face_min + HAND_FACE_MIN env var.
Update test fixtures: _near_hand() now spreads kp[5]/kp[17] so
existing tests keep passing through both near+face gates.
config.py: PINCH_EXT_MIN docs said "min frames for debounce"
— it is min extended fingers required to fire; fix wording.
HAND_PERSIST_FRAMES said "persist after disappearance" — it
is frames required before a hand is drawn; fix wording.
CLAUDE.md: MEDIAPIPE_DELEGATE default was "cpu" — real
default is "gpu" (config.py); fix the RC0.1+ table row.
Add missing PINCH_ENABLE / VIZ_HUD / CONCERT_MIRROR rows
to the main env-vars table.
61 tests: all VizConfig defaults, four bool conventions,
numeric cast fallback, monkeypatch round-trip, and Part B
gating (_ensure_model never called under --iphone-usb).
Fix hand_swap_lr from_env default: was True, now False.
Add data_only_viz/config.py: frozen dataclass VizConfig with typed
fields for all 56 env reads in data_only_viz. from_env() reads
os.environ at call time — no module-level singleton, test-compat.
Migrate action_head_pub._init_finger_piano and renderer.initWithState_
to consume VizConfig. Keep renderer.py ARKIT_FULL module-level (test
uses MetalRenderer.__new__ without calling initWithState_).
HAND_SWAP_LR default changed False (was True): Vision chirality
validated correct live 2026-07-02; swap knob now defaults off.
L'électron rare