Anyone can already save a theme and share it by link. A public gallery turns every saved theme into a browsable, one-click-apply page — Thingtime's most demoable feature, out in the open.
/api/v1/themes/shared +
?apply=<shareId> deep links, the sanitising resolveTheme(),
and ThemeStudio's existing mini preset previews (extract the preview card, add a
list mode). Apply routes through applyThemeDoc; ⭐ marks the viewer's active theme.