engine(windows-x64): publish e64890fd3 — G4 mergeable-draw counter on the 4fde0e94 pair; GodotSharp regenerated (new enum); headless boot clean

.agents/handoffs/forge-windows-e64890fd.md

@@ -13,3 +13,10 @@ Steps (same flags as the `windows-x64` manifest block, Vulkan only — no D3D12
 2. `--generate-mono-glue` + `build_assemblies.py` (Api + Tools).
 3. Smoke: host a world, 0 `Wrapper class not found`; `env gpucull status` shows `(N mergeable)`.
 4. Publish `engine/windows-x64/` + manifest + README rows, `tinqs push`.
+
+## 2026-10-18 Windows side done (Forge/ZCode)
+
+Windows published `e64890fd3` (built at `e64890fd3b` — same hash as the Mac and the pin). Whole GodotSharp
+published (Api + Tools, new enum baked in). Headless game boot clean, 0 binding errors. Step 3's in-world bit
+(host a world, 0 wrapper errors, `env gpucull status` showing `(N mergeable)`) still owed — same list as the
+G2 handoff: multimesh_cull_pool oracle on D3D12, --gpu-validation (Graphics Tools), gpucull census.