add Gitea Actions CI workflow

.gitea/workflows/ci.yml

@@ -0,0 +1,15 @@
+name: Gitea CI POC
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build & verify site
+        run: |
+          echo "=== Gitea Actions CI running ==="
+          uname -a
+          echo "--- repo files ---"; ls -la
+          test -f index.html && echo "index.html present ( bytes)"
+          echo "POC_GITEA_ACTIONS_OK"