Fix CI wheels: disable testing/benchmarks, add macOS to test matrix, Release build

- Add -DDTWC_BUILD_TESTING=OFF and -DDTWC_BUILD_BENCHMARK=OFF to wheel
  builds — eliminates Catch2 compilation (was ~60% of build time)
- Add -DCMAKE_BUILD_TYPE=Release for optimized wheels
- Add macos-latest to test_python matrix (was missing)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ElektrikAkar

.github/workflows/python-wheels.yml

@@ -22,19 +22,20 @@ jobs:
 
       - uses: pypa/cibuildwheel@v2.21
         env:
-          # Build for Python 3.9-3.13
-          # STABLE_ABI (Python >= 3.12) handled conditionally in python/CMakeLists.txt
           CIBW_BUILD: "cp39-* cp310-* cp311-* cp312-* cp313-*"
           CIBW_SKIP: "*-musllinux_* *-win32 *-manylinux_i686"
           CIBW_ARCHS_MACOS: "x86_64 arm64"
 
-          # Disable commercial/heavy solvers for wheel builds.
+          # Release build, no tests/benchmarks, max optimization
           CIBW_CONFIG_SETTINGS: >-
             cmake.args=-DDTWC_BUILD_PYTHON=ON
             cmake.args=-DDTWC_ENABLE_GUROBI=OFF
             cmake.args=-DDTWC_ENABLE_HIGHS=OFF
+            cmake.args=-DDTWC_BUILD_TESTING=OFF
+            cmake.args=-DDTWC_BUILD_BENCHMARK=OFF
+            cmake.args=-DCMAKE_BUILD_TYPE=Release
 
-          # macOS: require 10.15+ for std::filesystem, provide OpenMP hints
+          # macOS: 10.15+ for std::filesystem, OpenMP
           CIBW_ENVIRONMENT_MACOS: >-
             MACOSX_DEPLOYMENT_TARGET=10.15
           CIBW_BEFORE_BUILD_MACOS: "brew install libomp || true"
@@ -64,7 +65,7 @@ jobs:
     name: Test Python ${{ matrix.python }} on ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         python: ['3.10', '3.12']
     runs-on: ${{ matrix.os }}
     steps: