CI: select PlatformToolset per runner (x64 v145, ARM64 v143)

The windows-latest x64 runner is on Visual Studio 2026 (toolset v145), but
windows-11-arm is still on Visual Studio 2022 (newest toolset v143), so the
hardcoded v145 failed ARM64 with MSB8020 (v145 build tools not found). v143
won't work on x64 either, since that image only ships ATL for its default
v145 toolset. Add a per-platform toolset matrix field and use it in the
native C++ build steps.

Author: riyasy

.github/workflows/build.yml

@@ -35,8 +35,8 @@ jobs:
       - id: pick
         shell: pwsh
         run: |
-          $x64 = '{"runner":"windows-latest","platform":"x64","rid":"win-x64","vcpkg-triplet":"x64-windows-release","install-root":"vcpkg_installed_x64","rust-target":"x86_64-pc-windows-msvc","publish-profile":"win-x64"}'
-          $arm = '{"runner":"windows-11-arm","platform":"ARM64","rid":"win-arm64","vcpkg-triplet":"arm64-windows-release","install-root":"vcpkg_installed_arm64","rust-target":"aarch64-pc-windows-msvc","publish-profile":"win-ARM64"}'
+          $x64 = '{"runner":"windows-latest","platform":"x64","rid":"win-x64","vcpkg-triplet":"x64-windows-release","install-root":"vcpkg_installed_x64","rust-target":"x86_64-pc-windows-msvc","publish-profile":"win-x64","toolset":"v145"}'
+          $arm = '{"runner":"windows-11-arm","platform":"ARM64","rid":"win-arm64","vcpkg-triplet":"arm64-windows-release","install-root":"vcpkg_installed_arm64","rust-target":"aarch64-pc-windows-msvc","publish-profile":"win-ARM64","toolset":"v143"}'
           $items = switch ("${{ inputs.platform }}") {
             'x64'   { $x64 }
             'ARM64' { $arm }
@@ -149,8 +149,10 @@ jobs:
       # Step 2 -- Native C++: FlyNativeLib.dll, FlyNativeLibHeif.dll,
       #                         FlyContextMenuHelper.exe
       # -----------------------------------------------------------------------
-      # PlatformToolset=v145 matches the toolset shipped with Visual Studio 18
-      # (now on the windows-latest / windows-11-arm runners) and the local scripts.
+      # PlatformToolset is per-runner (matrix.toolset): the windows-latest x64
+      # runner is on Visual Studio 2026 (v145), but windows-11-arm is still on
+      # Visual Studio 2022 (newest toolset v143) and has no v145. ATL ships with
+      # both images for their default toolset, so each compiles with its own.
       # Build order matters: FlyNativeLib has no vcpkg dependency and must be
       # built before FlyNativeLibHeif which links against heif.lib.
       # Output lands in Src/<Platform>/Release/ (not Src/<Project>/<Platform>/Release/).
@@ -162,7 +164,7 @@ jobs:
           msbuild FlyNativeLib.vcxproj `
             /p:Configuration=Release `
             /p:Platform=${{ matrix.platform }} `
-            /p:PlatformToolset=v145
+            /p:PlatformToolset=${{ matrix.toolset }}
 
       - name: Build FlyNativeLibHeif
         if: ${{ inputs.native == 'Build fresh' }}
@@ -171,7 +173,7 @@ jobs:
           msbuild FlyNativeLibHeif.vcxproj `
             /p:Configuration=Release `
             /p:Platform=${{ matrix.platform }} `
-            /p:PlatformToolset=v145
+            /p:PlatformToolset=${{ matrix.toolset }}
 
       - name: Build FlyContextMenuHelper
         if: ${{ inputs.native == 'Build fresh' }}
@@ -180,7 +182,7 @@ jobs:
           msbuild FlyContextMenuHelper.vcxproj `
             /p:Configuration=Release `
             /p:Platform=${{ matrix.platform }} `
-            /p:PlatformToolset=v145
+            /p:PlatformToolset=${{ matrix.toolset }}
 
       # -----------------------------------------------------------------------
       # Step 3 -- Rust: fly_rust_bridge.dll  (RAW decode + SVG render)

.github/workflows/build_installer.yaml

@@ -36,8 +36,8 @@ jobs:
       - id: pick
         shell: pwsh
         run: |
-          $x64 = '{"runner":"windows-latest","platform":"x64","rid":"win-x64","vcpkg-triplet":"x64-windows-release","install-root":"vcpkg_installed_x64","rust-target":"x86_64-pc-windows-msvc","publish-profile":"win-x64"}'
-          $arm = '{"runner":"windows-11-arm","platform":"ARM64","rid":"win-arm64","vcpkg-triplet":"arm64-windows-release","install-root":"vcpkg_installed_arm64","rust-target":"aarch64-pc-windows-msvc","publish-profile":"win-ARM64"}'
+          $x64 = '{"runner":"windows-latest","platform":"x64","rid":"win-x64","vcpkg-triplet":"x64-windows-release","install-root":"vcpkg_installed_x64","rust-target":"x86_64-pc-windows-msvc","publish-profile":"win-x64","toolset":"v145"}'
+          $arm = '{"runner":"windows-11-arm","platform":"ARM64","rid":"win-arm64","vcpkg-triplet":"arm64-windows-release","install-root":"vcpkg_installed_arm64","rust-target":"aarch64-pc-windows-msvc","publish-profile":"win-ARM64","toolset":"v143"}'
           $items = switch ("${{ inputs.platform }}") {
             'x64'   { $x64 }
             'ARM64' { $arm }
@@ -150,8 +150,10 @@ jobs:
       # Step 2 -- Native C++: FlyNativeLib.dll, FlyNativeLibHeif.dll,
       #                         FlyContextMenuHelper.exe
       # -----------------------------------------------------------------------
-      # PlatformToolset=v145 matches the toolset shipped with Visual Studio 18
-      # (now on the windows-latest / windows-11-arm runners) and the local scripts.
+      # PlatformToolset is per-runner (matrix.toolset): the windows-latest x64
+      # runner is on Visual Studio 2026 (v145), but windows-11-arm is still on
+      # Visual Studio 2022 (newest toolset v143) and has no v145. ATL ships with
+      # both images for their default toolset, so each compiles with its own.
       # Build order matters: FlyNativeLib has no vcpkg dependency and must be
       # built before FlyNativeLibHeif which links against heif.lib.
       # Output lands in Src/<Platform>/Release/ (not Src/<Project>/<Platform>/Release/).
@@ -163,7 +165,7 @@ jobs:
           msbuild FlyNativeLib.vcxproj `
             /p:Configuration=Release `
             /p:Platform=${{ matrix.platform }} `
-            /p:PlatformToolset=v145
+            /p:PlatformToolset=${{ matrix.toolset }}
 
       - name: Build FlyNativeLibHeif
         if: ${{ inputs.native == 'Build fresh' }}
@@ -172,7 +174,7 @@ jobs:
           msbuild FlyNativeLibHeif.vcxproj `
             /p:Configuration=Release `
             /p:Platform=${{ matrix.platform }} `
-            /p:PlatformToolset=v145
+            /p:PlatformToolset=${{ matrix.toolset }}
 
       - name: Build FlyContextMenuHelper
         if: ${{ inputs.native == 'Build fresh' }}
@@ -181,7 +183,7 @@ jobs:
           msbuild FlyContextMenuHelper.vcxproj `
             /p:Configuration=Release `
             /p:Platform=${{ matrix.platform }} `
-            /p:PlatformToolset=v145
+            /p:PlatformToolset=${{ matrix.toolset }}
 
       # -----------------------------------------------------------------------
       # Step 3 -- Rust: fly_rust_bridge.dll  (RAW decode + SVG render)