fix(3d): render pierced solid faces with their holes

Build pierced planar faces (a wall with a window opening) as truck faces
with inner hole boundaries: collect every face loop (outer + holes), wind
each hole opposite the outer so try_attach_plane cuts it, and let truck
triangulate. Drop the back-face cull on the solid-mesh pipelines so faces
show regardless of the import's winding (the shader already lights
two-sided). Relies on the acadrust SatLoop next_loop fix that makes hole
loops reachable. (#123)

Co-Authored-By: Claude Opus 4.8 <[email protected]>

Cargo.lock

@@ -67,7 +67,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 [[package]]
 name = "acadrust"
 version = "0.3.4"
-source = "git+https://github.com/HakanSeven12/acadrust?branch=main#7066566e7c19c49a436d0051181390261776d803"
+source = "git+https://github.com/HakanSeven12/acadrust?branch=main#67db8eeeb63e429d301f7708ee8a4629ed3eb780"
 dependencies = [
  "ahash",
  "anyhow",
@@ -3157,7 +3157,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b577e2d69827c4740cba2b52efaad1c4cc7c73042860b199710b3575c68438d"
 dependencies = [
  "bytecount",
- "memchr 1.0.2",
+ "memchr 2.8.1",
  "nom 8.0.0",
 ]