Add Gitea runner smoke test

.gitea/workflows/smoke.yml

@@ -0,0 +1,72 @@
+name: Gitea Runner Smoke Test
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main, master ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  smoke:
+    # Use the exact label your runner registered with.
+    runs-on: [oracle9-runner]
+    timeout-minutes: 15
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Show environment info
+        run: |
+          echo "User: $(whoami)"
+          echo "Host: $(hostname)"
+          uname -a
+          echo "---- /etc/os-release ----"
+          cat /etc/os-release || true
+          echo "---- CPU ----"
+          lscpu | egrep 'Model name|CPU\\(s\\)|Thread|Core' || true
+          echo "---- Mem/Disk ----"
+          free -h || true
+          df -h || true
+
+      - name: Shell sanity checks
+        run: |
+          set -euo pipefail
+          test $((2+2)) -eq 4
+          echo "smoke: ok ✅" | tee smoke.txt
+
+      - name: Python quick test
+        run: |
+          python3 - <<'PY'
+          assert 6 * 7 == 42
+          print("python ok ✅")
+          PY
+
+      - name: Network sanity
+        run: |
+          getent hosts gitea.local || true
+          curl -sI https://www.example.com | head -n1
+
+      - name: Upload artifact (proof the job ran)
+        uses: actions/upload-artifact@v4
+        with:
+          name: smoke-output
+          path: smoke.txt
+
+  # Optional: verifies container runtime if present (Docker or Podman-Docker socket)
+  container-check:
+    runs-on: [oracle9-runner]
+    needs: [smoke]
+    steps:
+      - name: Check container runtime
+        run: |
+          if command -v docker >/dev/null 2>&1; then
+            docker info >/dev/null
+            docker run --rm hello-world || true
+          else
+            echo "No docker/podman-docker found — skipping."
+          fi
+