On site at 7 a.m., GC asked to shift the core wall 150 mm to clear a duct the mech team won’t reroute, and everyone nodded until I explained it wrecks the coupling beam geometry and the foundation dowels we placed Friday. I design buildings to stand up, not to absorb last‑minute coordination misses, but I’m tired of being the brick wall people bounce off. How do you hold the line on integrity without becoming the villain?