Use static zlib on Windows to fix DLL loading issue

vcpkg's default shared zlib causes DLL load failures at runtime.
Using x64-windows-static triplet to statically link zlib.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: BoPeng

.github/workflows/python-app.yml

@@ -146,9 +146,9 @@ jobs:
       - name: Install SWIG
         run: choco install swig -y
 
-      - name: Install zlib via vcpkg
+      - name: Install zlib via vcpkg (static)
         run: |
-          vcpkg install zlib:x64-windows
+          vcpkg install zlib:x64-windows-static
 
       - name: Install Python dependencies
         run: |
@@ -159,7 +159,7 @@ jobs:
       - name: Build and install simuPOP
         run: |
           $toolchain = "$env:VCPKG_INSTALLATION_ROOT\scripts\buildsystems\vcpkg.cmake"
-          pip install -v . --config-settings=cmake.args="-DCMAKE_TOOLCHAIN_FILE=$toolchain"
+          pip install -v . --config-settings=cmake.args="-DCMAKE_TOOLCHAIN_FILE=$toolchain;-DVCPKG_TARGET_TRIPLET=x64-windows-static"
 
       - name: Run tests (short allele type)
         run: python ./test/run_tests.py short -j2

.github/workflows/release.yml

@@ -161,8 +161,8 @@ jobs:
         with:
           python-version: "3.11"
 
-      - name: Install zlib via vcpkg
-        run: vcpkg install zlib:x64-windows
+      - name: Install zlib via vcpkg (static)
+        run: vcpkg install zlib:x64-windows-static
 
       - name: Install cibuildwheel
         run: pip install cibuildwheel
@@ -172,7 +172,7 @@ jobs:
         env:
           CIBW_BUILD: "cp39-win_amd64 cp310-win_amd64 cp311-win_amd64 cp312-win_amd64 cp313-win_amd64"
           CIBW_BEFORE_BUILD: pip install scikit-build-core cmake ninja swig
-          CIBW_ENVIRONMENT: CMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake"
+          CIBW_ENVIRONMENT: CMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake" CMAKE_ARGS="-DVCPKG_TARGET_TRIPLET=x64-windows-static"
           CIBW_TEST_COMMAND: python -c "import simuPOP; print(simuPOP.moduleInfo())"
 
       - name: Upload wheels