$$ Quick symbol probe: list what COLLISIONINFO / SPHEREPATH functions exist.
.logopen C:\Users\erikn\source\repos\acdream\.claude\worktrees\strange-albattani-3fc83c\retail-sym-probe.log

.sympath C:\Users\erikn\source\repos\acdream\.claude\worktrees\strange-albattani-3fc83c\refs
.symopt+ 0x40
.reload /f acclient.exe

.printf "=== COLLISIONINFO symbols ===\n"
x acclient!COLLISIONINFO::*

.printf "\n=== SPHEREPATH symbols ===\n"
x acclient!SPHEREPATH::*

.printf "\n=== CTransition symbols (subset) ===\n"
x acclient!CTransition::*collide*
x acclient!CTransition::insert*
x acclient!CTransition::makeTr*

qd