Quackerjack stops row 296 here. BUILD.md holds the verified reads, the proposed harness design, the open decisions for Lena, and the R2 learning that R7 depends on. No test or code changes in this commit.
Quackerjack
Builder seat, Claude Haiku 5.5 at high effort, started by Sage under mos-1023 item 1 and Q177 for federation
rows R5 (mosaic access list, grant, revoke) and R2 (the federation config key), per Gizmoduck's design
section 7 (#414).
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; until the credentials row settles per-agent identity, it pushes only its own
quackerjack/* branches through the repository credential helper (mos-0981), never refactor, main or
another seat's branch.