- Kiosk (Android): btnSettings was positioned top|end with alpha=0.12,
sitting invisibly on top of the HTML scan button in the webapp header.
Moved to bottom|end (marginBottom=80dp, alpha=0.28) so it never
overlaps the header. Kiosk versionCode 15→16, versionName 1.7.15.
- Web (Android Chrome/Brave): pointerleave fired before pointerup when
finger drifted, cancelling the long-press timer and letting a synthetic
click bubble to an unintended handler. Fixed with setPointerCapture +
preventDefault + replaced pointerleave with pointercancel. Added
touch-action:manipulation to .header-scan-btn CSS.
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