The Amp CLI and editor extensions now have something new: the Amp Command Palette.
You can open it via Ctrl+O/Alt+O in the CLI and Cmd+Shift+A/Alt+Shift+A in the editor extensions.
Unlike the old slash menu, the new command palette allows you to run commands without editing your prompt, and is accessible at all times (e.g. when the Amp editor panel isn't even open).
If you're on the CLI, this palette replaces the slash menu (and we'll pop open the new command palette if you type /). If you're using the Amp editor extensions, this means you can now run custom commands there for the first time.