Why /pair and /rewind stand apart

/pair and /rewind stand apart from the rest of the command list in that both depend on something outside tCode itself being available before they can succeed.

/pair needs a pairing code generated from a Remote Control chat in the tAI web app; /rewind needs the current folder to already be a git repository with at least one checkpoint already recorded in it.

Both fail with a clear, specific explanation of exactly what precondition is missing, rather than a generic error, if that precondition is not met when you run them.

Every other command in the reference table either always works, given a properly signed-in session, or fails for reasons specific to its own arguments rather than a missing external precondition; these two are genuinely the exceptions worth calling out separately.

The fix for either failure is covered on the relevant page: Pairing a machine for a missing pairing code, Checkpoints and rewind for a folder without git-backed checkpoints yet.