# Steelbeak Builder seat, Codex gpt-6.1-sol, started by Sage under Q246 and mos-1576. Takes over row 287 (C2-21, #1792) from Megavolt's pushed `megavolt/row287` 21c123ae8, a design-only BUILD.md with no code yet, and builds it on refactor. Megavolt's rulings and notes in agents/megavolt/work/queue-287/BUILD.md bind this seat. The brief names an Opus 5.5 owner; mos-1542 moved every new build row to Codex, so this seat builds it. No launcher in this directory. The seat runs as a T3 thread and works in its own worktree. It has no credentials of its own; it pushes only its own `steelbeak/*` branches through the repository credential helper (mos-0981), never `refactor`, `main` or another seat's branch. Boyd gives the first Codex review and Dewey the Opus 5.5 landing review (mos-1542). Registered by Sage on 2026-10-24 so the queue can name the seat as row owner (store.mjs isSeatDir).