TT639G Recombined Tiny Assistant v1Recombines isolated proof rungs:
TT638D code behavior + dyadic/Mercy proof upstream
TT639E2 context-copy behavior
TT639F3 task-routing behavior
simple rule/Q&A behavior
Blocking dense gates:
seen_combined_pass
upstream_regression_pass
mixed_heldout_pass
anti_collision_pass
Do not run dyadic/Mercy compare unless all four gates pass.
