Add keyboard shortcut to refresh creator list data

[Chucks1093]

Summary
There is no keyboard shortcut to trigger a manual refresh of the creator list, requiring users to reach for the mouse to reload data. A keyboard shortcut such as R or a defined key combo gives power users a faster way to refresh without interrupting their flow.

Scope

• add a keyboard shortcut that triggers a creator list data refresh
• show a brief visual indicator when the shortcut is activated
• document the shortcut in the keyboard shortcut legend

Acceptance Criteria

• activating the shortcut triggers a creator list refresh
• a brief loading indicator confirms the shortcut was recognized
• the shortcut is listed in the keyboard shortcut legend

Contributor coordination: if you pick this up, reach out in Telegram for updates or clarification: https://t.me/accesslayerorg