[Draft] Cross-platform: bring the linux-rust app to Windows natively (one crate, two OSes)

.gitattributes

@@ -0,0 +1,14 @@
+
+# --- Collapse third-party / generated files in GitHub diffs (they're not ours
+# to review; the build still uses them). ---
+# Vendored FFmpeg (LGPL prebuilt: headers + import libs + DLLs), not our code:
+crossplatform/windows/daemon/vendor/** linguist-vendored
+# Generated Rust lockfiles:
+**/Cargo.lock linguist-generated
+# Prebuilt driver packages (binary artifacts):
+crossplatform/windows/drivers/**/prebuilt/** linguist-vendored
+# Kernel drivers are derived from Microsoft/nefarius samples (mic = MS ACX
+# AudioCodec sample; aap = bthecho/BthPS3). Collapse the sample-derived source in
+# diffs — our modifications are documented in the drivers' READMEs + HANDOFF.
+crossplatform/windows/drivers/mic/** linguist-vendored
+crossplatform/windows/drivers/aap/** linguist-vendored

.github/workflows/ci-linux-rust.yml → .github/workflows/ci-crossplatform-rust.yml

@@ -7,7 +7,7 @@ on:
     tags:
       - 'linux-v*'
     paths:
-      - 'linux-rust/**'
+      - 'crossplatform/crossplatform-rust/**'
       - '.github/workflows/linux-build.yml'
   workflow_dispatch:
 
@@ -38,11 +38,11 @@ jobs:
           path: |
             ~/.cargo/registry
             ~/.cargo/git
-            linux-rust/target
-          key: ${{ runner.os }}-cargo-${{ hashFiles('linux-rust/Cargo.lock') }}
+            crossplatform/crossplatform-rust/target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('crossplatform/crossplatform-rust/Cargo.lock') }}
 
       - name: Build AppImage and Binary
-        working-directory: linux-rust
+        working-directory: crossplatform/crossplatform-rust
         run: |
           cargo build --release --verbose
           just
@@ -55,33 +55,33 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: librepods-x86_64.AppImage
-          path: linux-rust/dist/librepods-x86_64.AppImage
+          path: crossplatform/crossplatform-rust/dist/librepods-x86_64.AppImage
 
       - name: Upload binary artifact
         if: "!startsWith(github.ref, 'refs/tags/linux-v')"
         uses: actions/upload-artifact@v4
         with:
           name: librepods
-          path: linux-rust/dist/librepods
+          path: crossplatform/crossplatform-rust/dist/librepods
 
       - name: Create tarball for Flatpak
         if: startsWith(github.ref, 'refs/tags/linux-v')
-        working-directory: linux-rust
+        working-directory: crossplatform/crossplatform-rust
         run: |
           VERSION="${GITHUB_REF_NAME#linux-v}"
           just tarball "${VERSION}"
           echo "VERSION=${VERSION}" >> $GITHUB_ENV
-          echo "TAR_PATH=linux-rust/dist/librepods-v${VERSION}-source.tar.gz" >> $GITHUB_ENV
+          echo "TAR_PATH=crossplatform/crossplatform-rust/dist/librepods-v${VERSION}-source.tar.gz" >> $GITHUB_ENV
 
       - name: Create GitHub Release (AppImage + binary + source)
         if: startsWith(github.ref, 'refs/tags/linux-v')
         uses: softprops/action-gh-release@v2
         with:
           tag_name: ${{ github.ref_name }}
           files: |
-            linux-rust/dist/librepods-v${{ env.VERSION }}-source.tar.gz
-            linux-rust/dist/librepods-x86_64.AppImage
-            linux-rust/dist/librepods
+            crossplatform/crossplatform-rust/dist/librepods-v${{ env.VERSION }}-source.tar.gz
+            crossplatform/crossplatform-rust/dist/librepods-x86_64.AppImage
+            crossplatform/crossplatform-rust/dist/librepods
           generate_release_notes: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/ci-windows.yml

@@ -0,0 +1,89 @@
+name: Windows CI (frontend)
+
+# Builds the native Windows frontend: the Rust daemon (librepodsd) + tray
+# (librepods-tray) and the WinUI 3 app (librepods-winui). The two kernel drivers
+# (AAP L2CAP + hi-res mic) are NOT built here — they need the WDK and test/EV
+# signing, which is a separate, manual pipeline.
+
+on:
+  push:
+    branches: [cross-platform]
+    paths:
+      - 'crossplatform/windows/**'
+      - '.github/workflows/ci-windows.yml'
+  pull_request:
+    paths:
+      - 'crossplatform/windows/**'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      # ---- Rust: daemon + tray (native msvc target) --------------------------
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache Cargo
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            crossplatform/windows/daemon/target
+            crossplatform/windows/tray/target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('crossplatform/windows/**/Cargo.lock') }}
+
+      - name: Build daemon (librepodsd)
+        working-directory: crossplatform/windows/daemon
+        run: cargo build --release
+
+      - name: Build tray (librepods-tray)
+        working-directory: crossplatform/windows/tray
+        run: cargo build --release
+
+      # ---- WinUI 3 app (unpackaged, self-contained) --------------------------
+      # WinUI resource generation runs the PRI MSBuild task
+      # (Microsoft.Build.Packaging.Pri.Tasks.dll), which is a .NET *Framework*
+      # assembly. `dotnet build` hosts MSBuild on .NET (Core) and cannot load it
+      # → MSB4062. Visual Studio's msbuild.exe is .NET Framework and loads it, so
+      # build the WinUI project with VS MSBuild. The .NET 10 SDK is still needed
+      # for the net10.0 target resolver.
+      - name: Setup .NET 10
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.0.x'
+
+      - name: Setup MSBuild
+        uses: microsoft/setup-msbuild@v2
+
+      - name: Restore WinUI app
+        working-directory: crossplatform/windows/winui
+        run: msbuild LibrePods.WinUI/LibrePods.WinUI.csproj -t:Restore -p:Configuration=Release -p:Platform=x64
+
+      - name: Build WinUI app
+        working-directory: crossplatform/windows/winui
+        run: msbuild LibrePods.WinUI/LibrePods.WinUI.csproj -t:Build -p:Configuration=Release -p:Platform=x64 -p:RestorePackages=false
+
+      # ---- Collect + upload artifacts ----------------------------------------
+      - name: Collect artifacts
+        shell: pwsh
+        run: |
+          New-Item -ItemType Directory -Force dist | Out-Null
+          Copy-Item crossplatform/windows/daemon/target/release/librepodsd.exe dist/
+          Copy-Item crossplatform/windows/tray/target/release/librepods-tray.exe dist/
+          # Find the WinUI output dir by locating the exe (path varies with TFM/RID).
+          $exe = Get-ChildItem -Recurse -Filter librepods-winui.exe `
+            crossplatform/windows/winui/LibrePods.WinUI/bin | Select-Object -First 1
+          if (-not $exe) { throw "WinUI build output (librepods-winui.exe) not found" }
+          Copy-Item -Recurse $exe.Directory.FullName dist/winui
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: librepods-windows-frontend
+          path: dist
+          if-no-files-found: error

.gitignore

@@ -326,6 +326,9 @@ __pycache__/
 .Python
 develop-eggs/
 dist/
+# ...but the LibrePods cross-platform distributables are intentionally tracked.
+!crossplatform/dist/
+!crossplatform/dist/**
 downloads/
 eggs/
 .eggs/
@@ -666,3 +669,15 @@ result-*
 
 # direnv
 .direnv
+
+# Claude Code local config
+.claude/
+
+# LibrePods WinUI app manifest is a source file, not a build artifact
+!crossplatform/windows/winui/LibrePods.WinUI/app.manifest
+
+# Visual Studio per-user project settings (local build config — never shared)
+*.vcxproj.user
+
+# Visual Studio Static Driver Verifier log (generated when running SDV/DVL locally)
+DvlErrLog.txt