Cross-export Windows release package on Linux

docs/PROJECT-STRUCTURE.md

@@ -47,14 +47,17 @@ S:\Game Hacking\Eushully\Himegari\           ← workspace root (three siblings)
     │   ├── validate.py                        layered core/workspace/runtime/full validation driver
     │   ├── test_validate.py                   pure resolver + validation-plan regressions
     │   ├── build-linux-x64.sh                 one-command pinned Linux export/package/smoke pipeline
+    │   ├── build-windows-x64.sh               Linux-hosted Windows cross-export/package pipeline
     │   ├── dotnet_publish_proxy.py            guarded low-memory Godot export-time publish staging
     │   ├── publish_gitea_release.py           guarded/retry-safe native Gitea release promotion
     │   ├── verify_windows_native.py           static AMD64 PE/native-bundle contract verifier
     │   ├── bootstrap-godot-linux-x64.sh       repo-local Godot 4.7 Linux editor/template bootstrap
     │   ├── godot-linux-x64.json               immutable Godot editor/template source + SHA-256 manifest
     │   ├── install_godot_templates.py         selective HTTP-range installer for pinned template members
-    │   ├── package_linux_x64.py               export verifier + notice/checksum/archive packager
+    │   ├── package_linux_x64.py,
+    │   │   package_windows_x64.py             target-specific export verifiers and normalized packagers
     │   ├── test_install_godot_templates.py, test_package_linux_x64.py,
+    │   │   test_package_windows_x64.py,
     │   │   test_dotnet_publish_proxy.py,
     │   │   test_publish_gitea_release.py,
     │   │   test_verify_windows_native.py       source-only bootstrap/package/publish/native regressions
@@ -109,9 +112,10 @@ S:\Game Hacking\Eushully\Himegari\           ← workspace root (three siblings)
     ├── build/                               DERIVED (our-work-side) — generated by tools/; disposable
     │   ├── downloads/, toolchains/             immutable dependency caches and repo-local Godot toolchain
     │   ├── export/linux-x64/                   verified loose Godot Linux export
+    │   ├── export/windows-x64/                 structurally verified loose Godot Windows export
     │   ├── native/linux-x64/                   validated Linux FFmpeg shim/shared-library bundle
     │   ├── native/win-x64/                     validated Windows FFmpeg shim/DLL bundle
-    │   ├── package/                            staged release tree, smoke log, and `.tar.gz` artifact
+    │   ├── package/                            Linux staged tree/smoke/`.tar.gz` plus Windows x64 staged tree/ZIP
     │   ├── disasm/                            <NAME>.asm — human-readable disassembly, one per script
     │   ├── text/                              extracted text:
     │   │   ├── <NAME>.strings.txt               all inline strings in a script
@@ -160,9 +164,10 @@ S:\Game Hacking\Eushully\Himegari\           ← workspace root (three siblings)
 ```
 
 The Godot deliverable includes `Himegari.sln` because Godot's .NET exporter requires a solution,
-`export_presets.cfg` for the Linux x86_64 target, and `build/.gdignore` so disposable capture frames below
-the project do not enter its import or export scan. `tools/export-linux-x64.ps1` produces and validates the
-complete disposable artifact under `build/export/linux-x64/`.
+`export_presets.cfg` for Linux and Windows x86_64, and `build/.gdignore` so disposable capture frames below
+the project do not enter its import or export scan. `tools/build-linux-x64.sh` and
+`tools/build-windows-x64.sh` produce their complete disposable artifacts under `build/export/`; the older
+Windows-hosted `tools/export-linux-x64.ps1` remains a Linux-export development path.
 
 `godot/Main.cs` retains the front-end's startup and runtime coordination. Behavior-neutral partial-class
 companions keep cohesive surfaces independently navigable without changing the Godot node type or invocation