BT_SPAWN_AT teleport set only X/Z, keeping the old (dropzone) Y -- so teleporting to
a new spot embedded the mech in sloped terrain (user-reported). Lift the teleport
+500 above the old elevation so the authentic per-frame ground SNAP (BoxTree
FindBoundingBoxUnder, no gravity) settles it onto the surface next frame (the snap
only lowers, so it must start above the surface). Diagnostic only.
Also BT_COOL_LOG (heat.cpp): logs a heat subsystem's damageLevel/heatLoad/coolantDraw
when it carries damage -- for the 'do damaged mechs leak coolant' investigation.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>