ci: cross-platform matrix (Linux+macOS+Windows) + reports-on-Linux split

.gitea/workflows/validate.yml

@@ -7,35 +7,65 @@ on:
     branches: [main, develop]
 
 jobs:
-  build-and-test:
-    runs-on: ubuntu-latest
+  # Build + Tests laufen auf allen 3 OS, um Portabilitaet zu zeigen.
+  build-test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install build dependencies
+      - name: Install dependencies (Linux)
+        if: matrix.os == 'ubuntu-latest'
         run: |
           sudo apt-get update
           sudo apt-get install -y --no-install-recommends \
-            build-essential gcc make \
-            cppcheck \
-            lcov \
-            python3 python3-pip \
-            git ca-certificates
+            build-essential gcc make cppcheck lcov \
+            python3 python3-pip ca-certificates
+
+      - name: Verify toolchain
+        shell: bash
+        run: |
+          which gcc && gcc --version | head -1
+          which make && make --version | head -1
+          which cppcheck && cppcheck --version | head -1
 
       - name: Static Analysis (Cppcheck)
+        shell: bash
         run: make static
 
       - name: MISRA Check
+        shell: bash
         run: |
-          make misra || echo "MISRA findings present (Demo macht den Check non-failing)"
+          make misra || echo "MISRA findings present (Demo non-failing)"
 
       - name: Build + Unit Tests
+        shell: bash
         run: make test
 
-      - name: Coverage Report
-        run: make coverage
+  # Coverage, Traceability, PlantUML laufen nur auf Linux (lcov-Tooling, Artifact-Upload).
+  reports:
+    runs-on: ubuntu-latest
+    needs: build-test
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            build-essential gcc make cppcheck lcov \
+            python3 python3-pip ca-certificates
+
+      - name: Build + Tests + Coverage
+        run: |
+          make test
+          make coverage
 
       - name: Traceability Check
         run: python3 tools/traceability.py check
@@ -66,10 +96,3 @@ jobs:
         with:
           name: architecture-diagrams
           path: docs/diagrams/
-
-      - name: Upload Test Results
-        uses: actions/upload-artifact@v3
-        if: always()
-        with:
-          name: test-output
-          path: build/