tune-output

Change how Claude's replies are shaped — adopt, revise or reject a response-style rule — then record the pass in a ledger so the next one starts from evidence instead of from scratch. Owns the output style file, the blind A/B harness that tests a candidate before it ships, and the history of what has already been tried. TRIGGER when: the user wants replies formatted or worded differently, brings a response-style idea from another project or repo to evaluate, asks why a style rule exists or is missing, or says an existing style rule is not working. DO NOT TRIGGER when: the subject is prose inside a document or README (that is `docs-style`), commit message wording (`shared/commit-message-rules.md`), a single one-off reply the user just wants rewritten, or a subagent's prompt.