[ENHANCEMENT] Add completion change review and restore actions #661

Type

Enhancement

Problem / Value

Users need a simple way to review and undo the changes produced by the latest prompt after an attempt completes. This helps users validate agent output and recover quickly before starting a new task.

Context

This issue was created for PR #633 to provide the required linked issue for the completion change actions feature.

The requested improvement is to show inline "See New Changes" and "Restore Changes" actions on completion results when a latest-prompt checkpoint is available, while keeping the existing "Start New Task" action.

Constraints/Preferences

Keep the actions scoped to changes from the latest prompt, ask for confirmation before restoring, reuse the existing checkpoint diff and restore behavior, and preserve the existing completion flow.

Related PR: #633