feat(gallery): bring the keypad-through-guarded ten to the extraction bar

entryKeypad, thumbSlide, waveRegion, ledRow, pillSlide, spunKnob, stompSwitch, wingSelector, discSwitch, and guardedToggle each get the contract comment. All ten are SVG-stage builders, so there were no classes to prefix.

set() hardening lands where a handle could wedge: ledRow, pillSlide, and discSwitch clamp their index (discSwitch previously threw), waveRegion keeps E at least 4 above S from set() itself rather than only the drag path, and entryKeypad ignores keys outside its documented 0-9/confirm/clear set. ledRow's default selection is index 5 only for the default program list. A caller's own items start at 0.

Extraction audit: 54/111 contract comments.

0 files changed, 0 insertions, 0 deletions