CodeFaeries QuickFind adds a search field to the admin bar, opened with Ctrl+K (Cmd+K on Mac). One query searches:
It works alongside WordPress’s native Command Palette rather than replacing it: the palette runs commands and navigates; QuickFind searches your actual content, plugins and settings. When the native palette is present, QuickFind automatically uses Ctrl+Shift+K so the two never collide.
Results are grouped, keyboard-navigable (arrows + Enter) and respect user capabilities everywhere.
Settings QuickFind: