Generate imaging and rendering API shims

RUSTREWRITE.md

@@ -51,9 +51,9 @@ The current workspace is a structural baseline, not a working client:
 - compiled metadata records 3,066 public types and 30,789 public members with
   matching independent ECMA-335 counts, with all 142 external signature types
   resolved to cross-platform Rust or project-owned boundary types;
-- the Types and StructuredData slices expose 61 final Rust-facing types and all
-  1,237 callable members with real fields/constants/enum values and standardized
-  failing bodies;
+- the completed Types, StructuredData, Imaging, PrimMesher, and rendering slices
+  expose 84 final Rust-facing types and all 1,487 callable members with real
+  fields/constants/enum values and standardized failing bodies;
 - all 1,295 NUnit `[Test]`/`[TestCase]` invocations have compiling Rust test
   entries that intentionally panic with their source identity and body hash;
 - all nine sample/tool projects have compiling Rust binary targets;