check workflow

.gitea/workflows/check.yaml

@@ -0,0 +1,15 @@
+name: Global Runner Check
+on: [push]
+
+jobs:
+  test-linux:
+    runs-on: linux
+    steps:
+      - run: clang++-21 --version
+      - run: echo "Hello from Linux host!"
+
+  test-valgrind:
+    runs-on: valgrind
+    steps:
+      - run: valgrind --version
+      - run: echo "Valgrind is ready for action!"