Why there is no single reset-everything command

There is no single command that resets every setting back to its defaults all at once. Each one is changed independently instead: effort with /effort, theme with /theme, auto-approve per tool with /config auto-approve.

This is deliberate rather than a missing convenience feature: it keeps changing one setting from ever accidentally resetting another one you had configured differently on purpose, for a reason you might not be thinking about in the moment.

If you genuinely want to reset everything, doing so one command at a time is a small amount of extra typing in exchange for never risking an unintended side effect on an unrelated setting.

Reasonable defaults to reset back to, if starting fresh is the goal: /effort medium, and /config auto-approve <tool> off for any tool you had previously turned on. Theme has no single "default" in the same sense, since it is purely a personal preference.

There is also no confirmation step required for any individual reset command; setting /effort medium when it is already medium, for instance, simply succeeds without complaint, which makes resetting one setting at a time low-friction even without a bulk command.