Layout

Single Pane

Register one component as the main pane:

blit.WithComponent("main", myComponent)

Dual Pane

Side-by-side layout with a collapsible sidebar:

blit.WithLayout(&blit.DualPane{
    Main:         table,
    Side:         panel,
    SideWidth:    30,        // character columns
    MinMainWidth: 60,        // sidebar auto-hides below this terminal width
    SideRight:    true,      // sidebar on the right (false = left)
    ToggleKey:    "p",       // key to collapse/expand
})

DualPane.Main maps to SlotMain; DualPane.Side maps to SlotSidebar. Focus cycles between the two panes with Tab.

StatusBar

Attach a footer with left and right text sections:

blit.WithStatusBar(
    func() string { return " ? help  q quit" },
    func() string { return fmt.Sprintf(" %d rows", count) },
)

For reactive content driven by signals (e.g. background polling):

leftSig  := blit.NewSignal("")
rightSig := blit.NewSignal("")

blit.WithStatusBarSignal(leftSig, rightSig)

// From any goroutine:
leftSig.Set("connected")

Signal updates are coalesced into one notification per frame via a dirty-bit mechanism.

Tick Interval

Register a periodic tick for polling or animation:

blit.WithTickInterval(100 * time.Millisecond)

Components receive blit.TickMsg in their Update method.