fix(render): close remaining OCS/WCS gaps for mirrored entities

Follow-up to the LINE/POINT WCS fix - the same bug class elsewhere:

- 2D SOLID rendered its OCS corners raw in both the wire path and the
  shared fill builder (solid_hatch_model); SHAPE placed its marker at
  the raw OCS insertion. Both now map through the arbitrary axis.
- Grips: central wrap in view/dispatch.rs shows planar entities' grips
  at their world position (OCS→WCS) and converts drags back (WCS→OCS
  via the new wcs_point_to_ocs) - per-entity grip code stays in raw
  field space, INSERT keeps handling its own OCS.
- Pulls acadrust 81ebfee: OCS-aware bounding boxes, translate,
  transform and mirror for the ten planar entity types, so MOVE /
  ROTATE / MIRROR and culling work on mirrored entities too.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Cargo.lock

@@ -74,7 +74,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 [[package]]
 name = "acadrust"
 version = "0.4.0"
-source = "git+https://github.com/OpenAEC-Foundation/acadifc?branch=main#4bda0711bd1f7219806c616ef0852ab92fa8c030"
+source = "git+https://github.com/OpenAEC-Foundation/acadifc?branch=main#81ebfee1deeee1750a6ccc0c1d82a9d69d488f3a"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",