Two new harness modes that would have caught the PinTracer signature
bug fixed in 55b3dd2:
- `leafCheck: 'rgbLed'` — samples wokwi-rgb-led.ledRed/Green/Blue 16
times across a fade cycle and asserts each channel takes ≥2 distinct
values. The buggy version stayed at {0} for every channel because the
resolver locked itself to FLOATING and onChange never fired.
- `leafCheck: 'sevenSegment'` — samples wokwi-7segment.values 12 times
and asserts ≥4 distinct segment patterns. Counter sketches naturally
hit 10+ patterns when working; ≤1 means the segment subscribers never
saw an edge.
Both checks are now in the default suite alongside Blink, Button,
Traffic-Light, Fade. Result with current main: 6/6 pass.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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