app/

Package filters is a two-filterable-pane screen — the shape that exposes how focus behaves when a component has more than one place to type.

Package focus demonstrates a screen with multiple components sharing one keyboard, using pkg/focus to decide which of them has it.

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

Package mouse demonstrates the click, double-click, wheel and drag affordances tuilib components expose when the app shell enables mouse input (app.Options.Mouse = app.MouseClick).

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 replace demonstrates screen.Replace — atomic top-of-stack swap.

Package stack demonstrates a screen stack with data flowing in two directions:

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.