shell/

Package chrome demonstrates theme-owned border shape: the two slots a Theme carries for chrome, and the fact that changing one re-skins every component drawn from that theme without touching any component.

Package layouts demonstrates that pkg/layout can describe arbitrary compositions without the caller doing "m.h-2" math.

Package output demonstrates the app-wide output console: everything the app has said, kept, and readable long after the statusbar wiped it.

Package prescreen demonstrates pushing a screen *in front of* another one on first activation, and taking a result back when it pops — the shape behind "log in before you can use this", "pick a workspace first", or "re-authenticate, that token expired".

Package stack demonstrates a screen stack: how screens are pushed and popped, how data flows between them, and how a screen replaces itself.

Package status demonstrates how a screen sends transient feedback to the app's statusbar.

Package tabs demonstrates pkg/tab as the layout primitive of a host screen.

Package themecheck is an interactive theme picker.