Remapping Keys

### Description of the new feature / enhancement

The remapping key function supports use within specific applications, similar to remapping shortcuts.

### Scenario when this would be used?

Within specific applications, it centralizes hotkeys on the left hand.

### Supporting information

_No response_

The issue does not identify any files, tests, or entry points. Start by locating the remapping key implementation and the existing application-specific shortcut handling, then clarify the expected per-application behavior and acceptance criteria before estimating completion.

Written by the indexing model from the issue text.