wip(L6, side branch): screen-space far gate; no-op cutoff removed; cost within noise vs L4

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ED33VnqepD4YY6gDAAA832

Standalone/Source/StreamBenchmarkHeadless.cpp

@@ -38,7 +38,6 @@ namespace
         bool ForceGenerate=false;
         bool MeshCoverage=false;
         bool ScreenSpaceGate=false;
-        bool VisualDetailCutoff=false;
         bool HasSeedOverride=false;
         int SeedOverride=0;
         bool HasRenderDistanceOverride=false;
@@ -98,7 +97,6 @@ namespace
                     "  --auto-surface-camera (place the 27-tile cube on this seed's surface)\n"
                     "  --mesh-coverage (report non-empty tiles and indexed triangles)\n"
                     "  --screen-space-gate (measure display error and historical negative controls)\n"
-                    "  --visual-detail-cutoff (enable the declared far visual octave cutoff)\n"
                     "  --render-distance-chunks=N (0 disables the extra far ring)\n"
                     "  --tls-probe=N (Linux worker TLS/stack measurement; N=0..12)\n"
                     "  --tls-probe-touch=none|surface-world|floating-islands (first-use probe)\n"
@@ -114,7 +112,6 @@ namespace
             else if(arg=="--force-generate")options.ForceGenerate=true;
             else if(arg=="--mesh-coverage")options.MeshCoverage=true;
             else if(arg=="--screen-space-gate")options.ScreenSpaceGate=true;
-            else if(arg=="--visual-detail-cutoff")options.VisualDetailCutoff=true;
             else if(arg=="--auto-surface-camera")options.AutoSurfaceCamera=true;
             else if(arg.starts_with("--recipe="))
             {
@@ -317,5 +314,5 @@ int main(int argc,char** argv)
         scheduler,options.StreamHash,false,false,false,false,coldStart,
         options.ProfileColumnOverlap,options.FarHorizonLOD8InteriorStepVoxels,
         options.MeshCoverage,options.MeshExportPath,options.CameraYawDegrees,
-        options.CameraPitchDegrees,options.ScreenSpaceGate,options.VisualDetailCutoff);
+        options.CameraPitchDegrees,options.ScreenSpaceGate);
 }