Separate Python tests from wheel builds

- python-tests.yml: runs on every push/PR, all 3 platforms, Python 3.10+3.12
- python-wheels.yml: only on main + tags, no test inside cibuildwheel,
  wheels uploaded as artifacts for offline download
- Removed CIBW_TEST_* from wheel builds (tested separately)

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

Author: ElektrikAkar

.github/workflows/python-tests.yml

@@ -0,0 +1,29 @@
+name: Python tests
+
+on:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: ['**']
+
+jobs:
+  test:
+    name: Python ${{ matrix.python }} on ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python: ['3.10', '3.12']
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: Install
+        run: pip install ".[test]" -v
+
+      - name: Test
+        run: pytest tests/python/ -v --tb=short

.github/workflows/python-wheels.yml

@@ -2,10 +2,8 @@ name: Python wheels
 
 on:
   push:
-    branches: [main, Claude]
+    branches: [main]
     tags: ['v*']
-  pull_request:
-    branches: ['**']
 
 jobs:
   build_wheels:
@@ -26,7 +24,7 @@ jobs:
           CIBW_SKIP: "*-musllinux_* *-win32 *-manylinux_i686"
           CIBW_ARCHS_MACOS: "x86_64 arm64"
 
-          # Release build, no tests/benchmarks, max optimization
+          # Release build, no tests/benchmarks, no heavy solvers
           CIBW_CONFIG_SETTINGS: >-
             cmake.args=-DDTWC_BUILD_PYTHON=ON
             cmake.args=-DDTWC_ENABLE_GUROBI=OFF
@@ -39,10 +37,6 @@ jobs:
           CIBW_ENVIRONMENT_MACOS: >-
             MACOSX_DEPLOYMENT_TARGET=10.15
           CIBW_BEFORE_BUILD_MACOS: "brew install libomp || true"
-
-          # Test the built wheel
-          CIBW_TEST_REQUIRES: "pytest numpy"
-          CIBW_TEST_COMMAND: "pytest {project}/tests/python -v --tb=short"
           CIBW_BUILD_VERBOSITY: 1
 
       - uses: actions/upload-artifact@v4
@@ -61,27 +55,10 @@ jobs:
           name: sdist
           path: dist/*.tar.gz
 
-  test_python:
-    name: Test Python ${{ matrix.python }} on ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ['3.10', '3.12']
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python }}
-      - name: Install and test
-        run: |
-          pip install ".[test]" -v
-          pytest tests/python/ -v --tb=short
-
   # publish:
   #   name: Publish to PyPI
   #   if: startsWith(github.ref, 'refs/tags/v')
-  #   needs: [build_wheels, build_sdist, test_python]
+  #   needs: [build_wheels, build_sdist]
   #   runs-on: ubuntu-latest
   #   permissions:
   #     id-token: write