docs: give the multi-view design and geometry facts one home each

Two workspace documents described the multi-view ownership decision by
overlapping each other and had both gone stale: neither matched the shipped
code, and the architecture document was referenced by nothing at all. They are
archived in the workspace, and this repo now carries the parts that belong to
it.

New: docs/geometry-measurements.md. Measured properties of the r01 sensing
surface, the sensing camera, the UV layouts, the printed cell pitch and the
runtime unroll domain - topology (1032 v / 1974 t), 355.77 mm2 area with 38.1%
near-vertical wall, the off-origin centroid, 94.5% inward-facing normals, the
0.516 x 0.714 mm measured pitch against a wrong 0.205 x 0.3556 mm nominal cell,
75.6% runtime coverage, and incidence over that region (p50 55.6 deg, invariant
to adding views). Merge-mode agreement is included, with an explicit note that
these values are camera-specific and expire when a camera moves - the Xynova
surface already needs 70 deg where r01 ships 62 deg.

Wiring:
- README.md points at the measurements and says they expire.
- design-parameters.md section 4 keeps the key semantics and now links to the
  workspace record for rationale and to the measurements for data, instead of
  restating either.
- design.yaml: replace a self-referential comment pointing back at the same
  document with the keys location and the rationale location.

No behaviour change: the YAML edit is a comment, and no source file is touched.

docs/design-parameters.md

@@ -198,6 +198,11 @@ raster pixels = px_per_mm × physical millimetres
 
 ## 4. `texture_patch_views`：多个投影视图和区域分工
 
+本节说明**每个键的语义**。为什么这样设计——为什么所有权在生成之前决定、为什么单位是三角形、
+以及两种 seam 模式各自的适用条件——见
+`D:\orisys_ws\docs\workflow\multiview-ownership-decision.md`。测量数据（拓扑、相机、入射角、
+cell pitch）见 [`geometry-measurements.md`](geometry-measurements.md)。
+
 这个流程较容易混淆，因为它同时使用三类信息。
 
 ### 4.1 三种角色