dispatch #341 todlando W10 fix/341-busy-window-axis off main 9a5dd7be. Brief: .spt/preserved/331/JIT-PLAN.md section W10. RUNS FIRST, ahead of W8/W9 - it is a live defect on every unwatched working agent. Seed REQs are on main unactivated: REQ-DELIVERY-WINDOW-IS-ACTIVITY-AXIS-ONLY and REQ-SEND-BUSY-ONLY-FLAG - activate them as your first commit. Also fixes #256 in the same lane.