Agent Skills: publish

Turns cleared copy into a dated deliverable file in the project's working directory, with a header recording the asset, date, and brief. TRIGGER when copy has cleared every editor's checks and is ready to ship, hand off, save, or export as a final draft. DO NOT TRIGGER while copy is still being written or revised — writing is the copywriting skill, clearing it is the editing skill. Publish is the last step, only for copy that is already cleared.