fix: show screen-specific key bindings in footer

Footer was always rendering global shortcuts (ShortHelp) instead of
the active screen's bindings. Now screens like Connect that define
KeyBindings() (j/k, r, p, a, d) show those in the footer instead.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: gitcoder89431

internal/app/view.go

@@ -24,7 +24,11 @@ func (m Model) View() tea.View {
 	active := m.screens[m.activeScreen]
 
 	head := header.View(header.Model{AppName: config.AppName, DeviceID: m.deviceID, DeviceName: m.deviceName, SyncStatus: m.syncStatus}, dims.Header.Width, dims.Header.Height, m.theme)
-	foot := footer.View(m.keys.ShortHelp(), dims.Footer.Width, dims.Footer.Height, m.theme)
+	footBindings := m.keys.ShortHelp()
+	if screenBindings := active.KeyBindings(); len(screenBindings) > 0 {
+		footBindings = screenBindings
+	}
+	foot := footer.View(footBindings, dims.Footer.Width, dims.Footer.Height, m.theme)
 	mainFrameWidth, mainFrameHeight := m.theme.Main.GetFrameSize()
 	mainWidth := max(0, dims.Main.Width-mainFrameWidth)
 	mainHeight := max(0, dims.Main.Height-mainFrameHeight)