{"key": "revise-1", "idea": "After an ambiguous first trade (0.05 13.0%, 65% of flips right, 16.5% of ambiguous reads flip) but a hard switch of s2/synced/phase loses edge (-0.035, -0.064 with the later-callback likelihood ratio): the flip only arrives at the next step's first trade, where the state reset makes the revised s2 matter little, and a wrong flip costs more than a right one gains. Pi-blending the two branch states' fees helps a little: +0.045 tune, +0.115 confirm, +0.079 se 0.023 holdout (256) - far below the 0.3 bar. Next: revise within the step using a routing likelihood (whether our quote or the rival's took the later order, direction LR alone is ~1.03), and blend quotes from the lattice mixture weights even without a branch flip; finish the holdout on a faster seat or the numba runner."}