The persisted draft now records the leading command chip's claim token
(DraftSnapshot.command). Restoring the draft asks the trigger pipeline's
new resolveClaim, which polls the optional InputTriggerSource.matchClaim
hook: the command source awaits its catalog and answers only a
leadingInput claim, never opening a popup, running an action, or
executing the command. The input rebuilds the chip once the claim
resolves, only at the revision the restore produced and merged into the
seed's history entry; otherwise the literal token stays and Enter still
adjudicates it.