Structures a one-page decision briefing as SBAR — Situation, Background, Assessment, Recommendation — with a hard length cap per section and a single named action, so a decision-maker gets the whole picture and the ask on one page. Use when someone asks for a short briefing rather than a report: "give me a 1-pager on the outage", "SBAR on this vendor", "brief me before Thursday's board", "decision memo on the migration". Not for a long research write-up with methods and results (use `write-imrad-report`) or a factual lookup with no recommendation (`grounded-answer`).
