Bring Everything Together

You have built the project feature by feature. Now the goal changes from implementation to verification.

The final module follows the same path a real user would take:

open app
  ↓
add task
  ↓
see it in the right column
  ↓
delete or move tasks
  ↓
refresh
  ↓
confirm the board is preserved

You will also step back and review why the application works: App owns shared task state, child components receive props and callbacks, and localStorage restores and saves that state.

Checkpoint

Before changing anything, run the project and make sure the current version builds successfully. The rest of this module is about checking behavior and cleaning up, not adding new product features.