separate workflows; build and lint clangtidy

.gitea/workflows/build.yml

@@ -6,8 +6,6 @@ on:
 jobs:
     build:
         runs-on: alpine
-        # Uses pre-built Docker image with all build deps.
-        # Rebuild via ci-image.yml workflow.
         container:
             image: git.aramjonghu.nl/aramjonghu/zshell-ci:latest
 
@@ -20,9 +18,3 @@ jobs:
 
             - name: Build
               run: ninja -C build
-
-            - name: clang-tidy
-              continue-on-error: true
-              run: |
-                  run-clang-tidy -p build -j $(nproc) -header-filter="Plugins/.*" --quiet 2>&1 | \
-                    grep -v 'Suppressed\|non-user\|non-system\|unknown argument.*mno-direct'

.gitea/workflows/lint-cpp.yml

@@ -0,0 +1,23 @@
+name: Lint (C++)
+
+on:
+    pull_request:
+
+jobs:
+    lint:
+        runs-on: alpine
+        container:
+            image: git.aramjonghu.nl/aramjonghu/zshell-ci:latest
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Configure
+              run: cmake -B build -G Ninja -DENABLE_MODULES=plugin -DCMAKE_BUILD_TYPE=Release
+
+            - name: clang-tidy
+              continue-on-error: true
+              run: |
+                  run-clang-tidy -p build -j $(nproc) -header-filter="Plugins/.*" 2>&1 | \
+                    grep -v 'Suppressed\|non-user\|non-system\|unknown argument.*mno-direct'