Finish the Import and Export Workflow

Test the complete backup workflow using the task features you already built.

Verify that an export preserves:

• Task titles
• Completion state
• Due dates
• Priorities
• Task IDs
• Current task order

Then test importing a valid backup and rejecting invalid data.

The import and export features should work with localStorage without creating a second source of truth.

Checkpoint

You should now be able to export a complete task list, modify or clear the app, import the backup, and continue using the restored tasks normally.