wip(assembler): M1 round 4 PARTIAL -- stopped at owner's request (GPU coil whine at night)

Unverified mid-round state (cliff plates / horizon slab / routes in progress). Resume from here.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ

Standalone/README.md

@@ -1,7 +1,7 @@
 # VoxelForge standalone world
 
 This C++20 program loads the owner snapshot from `data/owner_world.json`, runs the VoxelForge CPU
-pipeline, streams the clipmap with up to eight host worker threads, and displays it through Direct3D
+pipeline, streams the clipmap with up to sixteen host worker threads, and displays it through Direct3D
 11. `Core/` contains the Unreal-free `VoxelForgeCore` API and static-library target used by the
 standalone shape-world path. Unreal is not linked or needed at run time.
 
@@ -16,18 +16,18 @@ From the plugin root, run:
 
 `Build.ps1 -Target Core` builds only `Build\VoxelForgeCore\VoxelForgeCore.lib`; `-Target All`
 builds that library and the viewer. `Core\core_sources.txt` is the shared translation-unit
-manifest. The build uses the configured VS 2022 `vcvars64.bat`, MSVC `/std:c++20`, `/O2`,
-`/arch:AVX2`, `/fp:precise` and `/MP8`, BelowNormal priority and affinity `0xFF00`. Pass another
-executable name to build beside any viewer that may be open by setting `-OutputName`, for example
+manifest. The defaults use MSVC `/std:c++20`, `/O2`, `/arch:AVX2`, `/fp:precise`, `/MP16`, Normal
+priority and affinity `0xFFFF`. Use `-CompileWorkers 8 -BuildPriority BelowNormal` for a lower-impact
+build. Pass another executable name to build beside any viewer that may be open by setting `-OutputName`, for example
 `VoxelForgeCoreStandalone_test.exe`. The executable finds the JSON under `Standalone\data\`.
+The isolated viewer links `Source\GpuFarViewerLinkStubs.cpp`; GPU Far rendering is not part of this
+CPU viewer target.
 
-### Daytime resource limit
+### BuildHost resource controls
 
-Run audits and benchmarks at BelowNormal priority and use no more than 8 of this PC's 16 logical
-CPUs. The viewer clamps worker requests to eight. `Build.ps1` bounds MSVC with `/MP8`, sets the
-build process to BelowNormal and affinity `0xFF00`, and retains `/fp:precise`. The verification
-runner in `Core\verification\RunMachine.ps1` applies the same limits to viewer runs and refuses to
-overwrite an existing log stem.
+The standalone viewer accepts `--workers=1..16`, `--process-priority=Normal` and
+`--affinity-all-cpu`. The verification runner in `Core\verification\RunMachine.ps1` retains its
+separate BelowNormal/8-worker limits and refuses to overwrite an existing log stem.
 
 ## Controls