Generate avatar-facing API shims

RUSTREWRITE.md

@@ -52,22 +52,28 @@ The current workspace is a structural baseline, not a working client:
   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, 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;
+  wire/data, core runtime/networking, and avatar-facing manager slices expose
+  2,597 final Rust-facing types and all 27,191 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 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,
+The remaining 469 generated type shims preserve names and module placement, but
+do not yet expose their 3,598 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
 Stage 0 and does not yet satisfy either the full API-shim gate or the full
 test-suite gate.**
 
+The avatar-facing slice preserves the C# agent, movement/camera, appearance and
+outfit-policy, inventory/AIS/store, asset/cache, avatar, and animesh concepts.
+Long-running mapped calls retain an explicit cross-platform cancellation token
+and return the shared `NotImplemented { csharp_member }` error; events return a
+typed subscription guard so callback lifetime is visible to Rust callers.
+
 No functional porting starts until both missing gates are complete across the
 entire workspace, rather than one crate at a time: