- SurfaceCalibrationScreen: two-sample guided flow from the Level header.
Captures read SensorSource.gravity directly - stored calibration is
never applied to either sample. Exact 180-degree same-plane guidance,
clear-saved-calibration action, Surface persistence only.
- SettlingDetector (core/sensors, shared): 1.0 deg/s enter, 0.3 deg/s
exit held 500 ms; mid-band movement resets the quiet dwell without
leaving Settling (audit finding 1).
- StableSurfaceCapture (core/sensors): continuous 1.5 s settled window
with the 5-degree calibration-surface guard; restarts on motion.
- SurfaceCalibrationValidation (core/sensors): 3-degree bound on the
combined two-axis bias magnitude, unit-tested both sides of the
boundary (audit finding 2).
- Lock feedback suppression is structural: the calibration route removes
LevelScreen from composition, cancelling its sensor collection.
50 tests passing.
Audited-by: Claude (2 findings raised and resolved)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
thejayman77
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