perf(scene): cache block defns + batch wires by style

Tessellates each block_record once into local-coord LocalWires; Insert
references transform-copy + ByBlock-resolve the cache rather than
explode+re-tessellate per reference. Same-style wires inside one Insert
are NaN-batched into a single WireModel to keep wgpu buffer counts
sane — large blocks that previously bailed to a marker now render in
a handful of buffers each.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/main.rs

@@ -1,3 +1,5 @@
+#![allow(non_snake_case)]
+
 mod app;
 mod command;
 mod entities;