wip(standalone): GPU step 6 -- near field on GPU, exact; cold start still slower than CPU

Near LOD0/1 (detail band, relief, root refinement, normals) now evaluated and
meshed on the GPU. 960 near tiles: zero sign/topology differences vs CPU and
WARP, vertex max 0.0049 mm (was 15 cm); far survival audit passes; CPU hashes
44/44 unchanged. Far connector-panel outlier (64.56 cm, LOD8) remains a
tessellation difference, and remote captures show missing far geometry on GPU.

Cold readiness (viewer clock, my interleaved runs): CPU 2.51/2.49/2.40 s,
GPU 5.05/2.68/2.80 s. The ~2.1 s Present stall hit only the first GPU launch.
Viewer spends ~1.13 s before shape compile starts (startup checks), which is
the gap between the 0.95 s benchmark and ~2.4 s on-screen.

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

Standalone/Research/OwnerShapeWorld/speed_round/round9/REPORT.md

@@ -69,7 +69,16 @@ The bad-shell control fails as required: it removes 512 shell triangles and dete
 
 The six fixed views from the final executable are pixel-identical to Round 8. The [comparison](capture_compare_final.log) confirms zero changed pixels in all six. Images are in this folder: chamber, tunnel, passage, far, passage floor close-up, and tunnel bend.
 
-The first remote capture attempt used an assumed camera position of `(500, -123.25, -19.85)` m and is invalid: it does not match Round 8’s X=500 views. I asked for the original Y/Z coordinates and will replace those four provisional images and update this section when they are provided. The captures do not alter the mesh hashes or the fixed-view result.
+The remote comparison was recaptured with the recorded camera positions `(500,0,0,yaw,0)` for yaw 0/90/180/270. Round 8 (`VoxelForgeShapeRound8Final.exe`) and Round 9 (`VoxelForgeRound9Final.exe`) are exact at yaw 0. The remaining differences are at single-channel precision except for six channel values at yaw 270:
+
+| View | Changed pixels | Changed channels | Mean channel delta | Max channel delta |
+| --- | ---: | ---: | ---: | ---: |
+| Remote yaw 0 | 0 / 1,024,000 | 0 / 3,072,000 | 0.000000 | 0 |
+| Remote yaw 90 | 111 / 1,024,000 | 154 / 3,072,000 | 0.000050 | 1 |
+| Remote yaw 180 | 32 / 1,024,000 | 44 / 3,072,000 | 0.000014 | 1 |
+| Remote yaw 270 | 386 / 1,024,000 | 1,040 / 3,072,000 | 0.000695 | 6 |
+
+Both executables were run fresh with `--capture-after-clipmap --shape-world --force-generate --workers=8 --clip-radius=3`; all eight capture processes exited 0 under BelowNormal priority and affinity `0xFF00`. Images and the [pixel comparison](../round10/remote_compare.log) are in `../round10/`.
 
 ## Failed builds and runs