trace: Unreal timing traces run without hash capture (L71); verify baselines tracked

The L70 "2x SurfaceWorld GenerateTile in Unreal" was the instrument: the trace enabled
bCaptureVoxelForgeCoreHashesForValidation, which disables the native heightfield-band
shortcut and whole-tile skips (W1 same keys: 9.00 s hash-off vs 28.46 s hash-on). With
hashing off, Unreal and headless match at W8 within 1.2-2.5% (Core 14.42 s vs 14.26 s) on
identical tile keys. LOD0 p95 tail = real cost of non-empty passage tiles near the spawn mouth
(p50/p95 18.8/105 ms); most LOD0 tiles are empty.

verify.py reads its baselines from Standalone/Tools/verify/baselines/ instead of untracked
Saved/Linux. The 11 .vfmesh control meshes (~78 MB) are not committed yet (to be stored
compressed). Fast tier green.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1

Standalone/Research/WorldAssemblerM3/Linux37/AuditMouthShapeL37.py

@@ -7,6 +7,7 @@ from collections import defaultdict, deque
 from pathlib import Path
 
 ROOT = Path(__file__).resolve().parents[4]
+BASELINES = ROOT / "Standalone/Tools/verify/baselines"
 PROFILE_PATH = ROOT / "Standalone/Research/WorldAssemblerM3/Linux32/AuditRingTerraceL32.py"
 SPEC = importlib.util.spec_from_file_location("ring_profile_l37", PROFILE_PATH)
 PROFILE = importlib.util.module_from_spec(SPEC)
@@ -502,8 +503,8 @@ def main():
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument("--out", type=Path, default=ROOT / "Saved/Linux/l37")
     parser.add_argument("--baseline-out", type=Path,
-                        default=ROOT / "Saved/Linux/l37/no-tread-control")
-    parser.add_argument("--control-out", type=Path, default=ROOT / "Saved/Linux/l36")
+                        default=BASELINES / "mouth/l37-no-tread")
+    parser.add_argument("--control-out", type=Path, default=BASELINES / "mouth/l36")
     parser.add_argument("--scene", choices=tuple(SCENES) + ("all",), default="all")
     args = parser.parse_args()
     out = args.out if args.out.is_absolute() else ROOT / args.out