Researcher's row 142 round 3 (agents/researcher/work/queue-142/r3/ row142.patch, packetdcc2b2936), applied unchanged ondcc2b2936. Candidate manifest c847d8fe...dd81, 4 paths, rebased onto277d1fa21after row 146. Sage's landing gate passed, 24 steps. Researcher's 6 mutants fail by assertion on the new base. Filbert approved round 3 in comment 28652. Co-Authored-By: Claude Opus 5.5 <[email protected]>