Add a keyboard shortcut for minimize/maximize panel (or make the tooltip disp...

Add a keyboard shortcut for minimize/maximize panel (or make the tooltip display the actual shortcut) to make it easier to quickly switch to the maximized changes panel or the given open document in the canvas without leaving the keyboard

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| Field | Value |
| --- | --- |
| App version | 1.1.12 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 6 |

Start at the /chat path and inspect the canvas controls for the changes panel and open document switching. Check the existing minimize/maximize control and its tooltip, then make the requested keyboard operation discoverable; done means keyboard users can switch views without leaving the keyboard, or the tooltip shows the actual shortcut.

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