helpbar

A responsive help bar: one line of key bindings that expands, on toggle, into a multi-column view reflowed to use as many columns as the available width allows.

Bindings render in order: the WithToggle binding first, then WithGlobal bindings (set once), then contextual bindings passed to View at render time.
Disabled bindings (key.Binding.SetEnabled(false)) are dropped before layout, so the reflow never budgets width for something that won't be drawn.
Height(contextual...) always matches lipgloss.Height of View for the same arguments, so a host can reserve exactly the right amount of space. An empty bar renders "" and takes 0 rows.

See examples/helpbar.