2193409b6e
The amber arc was drawn at radius ~30px from center on a 56×56 canvas — the bottom of the arc (at angles near 6 o'clock) sat at y ≈ 58 and got clipped by the canvas's own bounding box. Visible as a flat cut-off at extreme positions. Fix: bump the canvas to 72×72 and use fixed-pixel values for the knob's geometry instead of fractions of `size`, so the visible knob diameter stays at ~52px regardless of canvas size and there's now ~10px of margin all around for the arc and drop shadow. - KNOB_SIZE: 56 → 72 - totalR: size * 0.46 → 26 (fixed) - rimW: size * 0.045 → 2.5 (fixed) - notch half-base: size * 0.026 → 1.5 (fixed) - cy: size/2 + 1 → size/2 (no need for the offset on the larger canvas) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>