Generate core runtime API shims

RUSTREWRITE.md

@@ -51,17 +51,17 @@ 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 completed Types, StructuredData, Imaging, PrimMesher, rendering, and main
-  wire/data slices expose 2,293 final Rust-facing types and all 24,292 callable
-  members with real fields/constants/enum values and standardized failing
-  bodies;
+- the completed Types, StructuredData, Imaging, PrimMesher, rendering, main
+  wire/data, and core runtime/networking slices expose 2,404 final Rust-facing
+  types and all 25,257 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;
 - the 128 TestClient command source files are retained as a command inventory.
 
-The remaining 773 generated type shims preserve names and module placement, but
-do not yet expose their 6,497 callable members. `api/SURFACE.tsv` is an inventory aid,
+The remaining 662 generated type shims preserve names and module placement, but
+do not yet expose their 5,532 callable members. `api/SURFACE.tsv` is an inventory aid,
 not proof of API coverage: it records declaration lines but does not fully parse
 multiline signatures. Likewise, a generated `pending` test is a parity
 placeholder, not a semantic translation. **This repository is therefore at