Decision 142 records the PRD 1.2 approval, Mos's rulings on choices 6 to 9, the token-unit draft position, the sage-0188 proxy facts and 9b left unfiled. The brief file holds one section per build row, steps 2 to 11 with 9a and 9c split out, each tied to its Gitea issue. Co-Authored-By: Claude Opus 5.5 <[email protected]>