unify CI workflows

.github/workflows/ci.yml

@@ -6,7 +6,6 @@ on:
   pull_request:
     branches: [main]
 
-# Cancel redundant runs on the same ref (e.g. rapid pushes to a PR branch)
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
@@ -15,124 +14,5 @@ permissions:
   contents: read
 
 jobs:
-  build-linux:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: true
-      matrix:
-        include:
-          - { os: ubuntu-24.04,     compiler: g++-13,     packages: g++-13,   build_type: Debug   }
-          - { os: ubuntu-24.04,     compiler: g++-14,     packages: g++-14,   build_type: Release }
-          - { os: ubuntu-24.04,     compiler: clang++-19, packages: clang-19, build_type: Debug   }
-          - { os: ubuntu-24.04,     compiler: clang++-20, packages: clang-20, build_type: Release }
-          - { os: ubuntu-22.04,     compiler: g++-12,     packages: g++-12,   build_type: Debug   }
-          - { os: ubuntu-24.04-arm, compiler: g++-14,     packages: g++-14,   build_type: Debug   }
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Install compiler
-        run: |
-          sudo apt-get update -q
-          sudo apt-get install -y ${{ matrix.packages }}
-
-      # Cache CPM-downloaded sources keyed on CMakeLists.txt content.
-      - name: Cache CPM sources
-        uses: actions/cache@v5
-        with:
-          path: ${{ runner.temp }}/cpm-cache
-          key: cpm-${{ runner.os }}-${{ hashFiles('CMakeLists.txt') }}
-          restore-keys: cpm-${{ runner.os }}-
-
-      - name: Set up ccache
-        uses: hendrikmuhs/ccache-action@v1.2.21
-        with:
-          key: ${{ matrix.os }}-${{ matrix.compiler }}-${{ matrix.build_type }}
-
-      - name: Configure, build, and test
-        env:
-          CPM_SOURCE_CACHE: ${{ runner.temp }}/cpm-cache
-        run: |
-          cmake -B build \
-            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
-            -DCMAKE_CXX_COMPILER=${{ matrix.compiler }} \
-            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
-          cmake --build build --parallel
-          ctest --test-dir build --output-on-failure
-
-  build-windows:
-    needs: build-linux
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: true
-      matrix:
-        include:
-          - { os: windows-2025, arch: x64, build_type: Release }
-          - { os: windows-2022, arch: x64, build_type: Release }
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Cache CPM sources
-        uses: actions/cache@v5
-        with:
-          path: ${{ runner.temp }}/cpm-cache
-          key: cpm-${{ runner.os }}-${{ matrix.arch }}-${{ hashFiles('CMakeLists.txt') }}
-          restore-keys: cpm-${{ runner.os }}-${{ matrix.arch }}-
-
-      - name: Set up sccache
-        uses: hendrikmuhs/ccache-action@v1.2.21
-        with:
-          key: windows-${{ matrix.arch }}-${{ matrix.build_type }}
-          variant: sccache
-
-      - name: Set up MSVC
-        uses: TheMrMilchmann/setup-msvc-dev@v3
-        with:
-          arch: ${{ matrix.arch }}
-
-      - name: Configure, build, and test
-        env:
-          CPM_SOURCE_CACHE: ${{ runner.temp }}/cpm-cache
-        run: |
-          cmake -B build -G Ninja `
-            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} `
-            -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
-          cmake --build build --parallel
-          ctest --test-dir build --output-on-failure
-
-  build-macos:
-    needs: build-windows
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: true
-      max-parallel: 1
-      matrix:
-        include:
-          - { os: macos-14, build_type: Release }
-          - { os: macos-15, build_type: Release }
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Cache CPM sources
-        uses: actions/cache@v5
-        with:
-          path: ${{ runner.temp }}/cpm-cache
-          key: cpm-${{ runner.os }}-${{ matrix.os }}-${{ hashFiles('CMakeLists.txt') }}
-          restore-keys: cpm-${{ runner.os }}-${{ matrix.os }}-
-
-      - name: Set up ccache
-        uses: hendrikmuhs/ccache-action@v1.2.21
-        with:
-          key: ${{ matrix.os }}-${{ matrix.build_type }}
-
-      - name: Configure, build, and test
-        env:
-          CPM_SOURCE_CACHE: ${{ runner.temp }}/cpm-cache
-        run: |
-          cmake -B build \
-            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
-            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
-          cmake --build build --parallel 1
-          ctest --test-dir build --output-on-failure
+  build:
+    uses: timblechmann/nova_github_actions/.github/workflows/cmake-ci.yml@main