CARD BS-T2  2026-09-26 00:54:00 -0700   unit source/physics/breakable_surfaces   (immutable pre-registration)
Observed: static __inline breakable_surface_plane_distance (x*i + (y*j + z*k) - d) is a TU-local regrouped copy
  of real_math.h plane3d_distance_to_point (dot_product3d(point,&n) - d); emitted as candidate-only STATIC code
  (32 B); January's object has no such section. Landed in 95d674d0 as an evidence-parked association lever.
Evidence: D = /Od breakable_surface_effect calls the SHARED plane3d_distance_to_point 0x56d580 four times
  (0x7a10bc/10e8/1119/1135), body = dot_product3d(point, &plane->n) - plane->d (our header body exactly).
  J = January's selected _plane3d_distance_to_point (decals) == our header's out-of-line copy (render_debug surplus
  IDENTICAL), i.e. the header body is right out of line.
Probe (measure only; prior lanes ran 70+ shapes, so NO new shape search here - rule 64):
  T2 = T1 + genuine plane3d_distance_to_point at the 4 sites + local helper deleted, default flags.
Prediction: _breakable_surface_effect residual [sha] at equal size 4032 and equal relocation count; the 11 other
  functions EXACT; difference confined to the 4 plane-distance sites (operand order of the j/k vs i terms).
Decisive test: lab_gate --all --disas _breakable_surface_effect (default flags).
