$$ Retail per-cell collide trace (2026-06-04 — the DECISIVE discriminator).
$$
$$ Question: when retail crosses the cellar lip, what does the per-cell collide
$$ CEnvCell::find_collisions RETURN for the connector cell 0xA9B40175 and the floor
$$ cell 0xA9B40171 (and 0174)?  This is the thing check_other_cells calls per cell
$$ (vtable[0x88]).  enum: 1=OK 2=COLLIDED 3=ADJUSTED 4=SLID.
$$
$$   - If 0175 returns mostly 1 (OK)  -> acdream's connector Slid is SPURIOUS
$$     (acdream over-detects / over-steps-up 0175).  Fix = stop acdream blocking 0175.
$$   - If 0175 returns 4 (SLID) too   -> retail slides+continues (no revert);
$$     acdream's wedge is the substep REVERT, not the collide.  Look upstream.
$$
$$ ROBUST BY CONSTRUCTION (verified offline via `cdb -z acclient.exe`):
$$   CEnvCell::find_collisions @0x52c100 has a SINGLE exit at +0x1e (0x52c11e):
$$     0052c11e pop edi      <-- esi still = this (CEnvCell*), eax = result
$$     0052c11f pop esi
$$     0052c120 ret 4
$$   cell id = poi(esi+0x28) (CEnvCell.m_DID).  No `gu`, no `qd` in the action.
$$   Reading this+result directly at the single exit is nesting-safe.
$$
$$ STEP 0 (optional re-verify): the `uf` below re-dumps the function; confirm the
$$ single exit is still at +0x1e and esi=this there, before driving.
$$
$$ Close retail when done to detach cdb (debuggee exit detaches; no qd needed).
.logopen C:\Users\erikn\source\repos\acdream\.claude\worktrees\thirsty-goldberg-51bb9b\retail-connector-collide-trace.log
.sympath C:\Users\erikn\source\repos\acdream\refs
.symopt+ 0x40
.reload /f acclient.exe
uf acclient!CEnvCell::find_collisions
$$ Log EVERY return for the lip cluster 0xA9B4017X (0171 floor / 0174 / 0175 connector).
$$ Also log any NON-OK (ret!=1) return for ANY Holtburg cell 0xA9B4xxxx (catch blocks
$$ outside the 017X cluster).  Low volume; cheap action + gc.
bp acclient!CEnvCell::find_collisions+0x1e ".if ((poi(@esi+0x28) & 0xFFFFFFF0) == 0xA9B40170) { .printf \"lip cell=0x%x ret=%d\\n\", poi(@esi+0x28), @eax } .elsif (((poi(@esi+0x28) & 0xFFFF0000) == 0xA9B40000) & (@eax != 1)) { .printf \"blk cell=0x%x ret=%d\\n\", poi(@esi+0x28), @eax }; gc"
g