- Popup header: tray icon + "Trailhead Path Bookmarker" title
- HTML <title>, electron-builder productName, and tray tooltip all match
- Popup width budget now also factors in the header's intrinsic width
(icon + title + actions), so the brand never gets ellipsized — measured
via h1 scrollWidth so overflow:hidden doesn't lie about content size
- Tray tooltip: "Trailhead Path Bookmarker"
- Popup header: "Trailhead"
- electron-builder productName: "Trailhead"
- New tray icon: orange mountain peak with pennant flag (replaces folder
pictogram). Tuned to 2px-min strokes so it survives downscaling to the
16-24px Windows tray
- Hide scrollbars across all scroll surfaces (popup, columns row, tab
strip) while keeping scroll behavior intact