iso: improve burn-in, export, and live boot

audit/internal/tui/screen_export.go

@@ -4,7 +4,12 @@ import tea "github.com/charmbracelet/bubbletea"
 
 func (m model) handleExportTargetsMenu() (tea.Model, tea.Cmd) {
 	if len(m.targets) == 0 {
-		return m, resultCmd("Export support bundle", "No removable filesystems found", nil, screenMain)
+		return m, resultCmd(
+			"Export support bundle",
+			"No writable removable filesystems found.\n\nRead-only or boot media are hidden from this list.",
+			nil,
+			screenMain,
+		)
 	}
 	target := m.targets[m.cursor]
 	m.selectedTarget = &target