feat: a status pane, like lazygit's: version, updates, accounts, files and links

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/app/fields.go

@@ -64,6 +64,8 @@ func (m *Model) syncFields() tea.Cmd {
 		default:
 			m.fields.Show("", nil)
 		}
+	case paneStatus:
+		m.fields.Show("lazysecrets", m.statusFields())
 	case paneContainers:
 		if c, ok := m.containers.Selected(); ok {
 			m.fields.Show(c.Name, m.containerFields(c))