Avoid memory leaks on restart

The problem

Repeated game restarts can accumulate timers and listeners if cleanup is incomplete.

Practical procedure

Register stable event handlers once, reset state explicitly and profile memory over repeated restarts.

Worked scenario

Restart the same puzzle 100 times while watching heap use and duplicate status updates.

Acceptance check

Fail the release if a single keypress causes multiple moves after repeated restarts.

Apply the method

Use the related interactive tool to try the concept on an inspectable example. Record the starting assumptions and expected result before changing settings, then compare what the tool actually does. Where the result differs, keep the release marked experimental and document the discrepancy.

Further reading: Relevant primary technical documentation. This guide is an educational procedure, not a substitute for independent usability or compliance review.