undo

type Handler interface {
	// Start is called at the beginning of undo
	Start()

	// OnSnapshotList is called with available snapshots
	OnSnapshotList(snapshots []engine.SnapshotInfo)

	// OnStep is called for each undo step
	OnStep(description string, status handler.StepStatus)

	// Complete is called when undo finishes
	Complete(success bool, message string)

	// Cleanup restores terminal state (may be no-op)
	Cleanup()

	// IsInteractive returns true if the handler supports interactive prompts
	IsInteractive() bool

	// SelectSnapshot prompts user to select a snapshot (interactive only)
	SelectSnapshot(snapshots []engine.SnapshotInfo) (string, error)

	// PromptConfirm prompts user for confirmation (interactive only)
	PromptConfirm(message string, defaultYes bool) (bool, error)
}

type NullHandler struct {
	handler.NullBase
}

type Options struct {
	SnapshotID string // Optional: specific snapshot to restore (skips interactive selection)
	Force      bool   // Optional: skip confirmation prompt
}