Development record

04-surfaces/01-ahoy.md:125-126 calls the remote apply 'the one abcd verb that mutates state outside this machine' and :146 heads it 'the one outward-visible write'. Other verbs write to the remote: abcd reserve writes one commit to its origin branch, abcd announce one commit to a status branch, abcd land pushes and arms a merge, and abcd peers re-arms withdrawn merges (each verb's own help). commands/ahoy.md correctly limits the same claim to ahoy's own forms.