Update CI configs to use the latest windows images with Visual Studio 2026.

Author: PCMan

.github/workflows/ci.yaml

@@ -19,7 +19,7 @@ jobs:
   # Build job – runs on every push/PR. Includes test signing only.
   # ---------------------------------------------------------------------
   build:
-    runs-on: windows-latest
+    runs-on: windows-2025
     permissions:
       id-token: write
       contents: write
@@ -133,7 +133,7 @@ jobs:
   release:
     needs: build
     if: startsWith(github.ref, 'refs/tags/')
-    runs-on: windows-latest
+    runs-on: windows-2025
     environment: production   # <-- manual approval point
     permissions:
       id-token: write

appveyor.yml

@@ -3,11 +3,12 @@ pull_requests:
     do_not_increment_build_number: true
 
 version: "{branch} build {build}"
-image: Visual Studio 2022
+image: Visual Studio 2026
 
 init:
     - git --version
     - git config --global core.autocrlf true
+    - cmake --version
 
 install:
     - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
@@ -16,6 +17,13 @@ install:
     - git submodule init
     - git submodule update
 
+    # The appveyor image contains cmake 4.1 only, which doesn't support VS 2016.
+    # Download cmake 4.3.0 and add it to the PATH.
+    - appveyor DownloadFile https://cmake.org/files/v4.3/cmake-4.3.0-windows-x86_64.zip -FileName cmake43.zip
+    - 7z x cmake43.zip -oC:\cmake43
+    - set "PATH=C:\cmake43\cmake-4.3.0-windows-x86_64\bin;%PATH%"
+    - cmake --version   # should print 4.3.0
+
 build_script:
     - .\build.bat
 

build.bat

@@ -1,10 +1,10 @@
-cmake . -Bbuild -G "Visual Studio 17 2022" -A Win32 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
+cmake . -Bbuild -G "Visual Studio 18 2026" -A Win32 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
 cmake --build build --config Release
 
-cmake . -Bbuild64 -G "Visual Studio 17 2022"  -A x64 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
+cmake . -Bbuild64 -G "Visual Studio 18 2026"  -A x64 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
 cmake --build build64 --config Release --target PIMETextService
 
-cmake . -Bbuild_arm64 -G "Visual Studio 17 2022"  -A ARM64 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
+cmake . -Bbuild_arm64 -G "Visual Studio 18 2026"  -A ARM64 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
 cmake --build build_arm64 --config Release --target PIMETextService