diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
new file mode 100644
index 0000000..cd39385
--- /dev/null
+++ b/.gitea/workflows/ci.yaml
@@ -0,0 +1,20 @@
+name: ci
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  markdown:
+    runs-on: docker
+    container:
+      image: alpine:latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Check markdown files exist
+        run: |
+          test -f DESIGN.md
+          test -f README.md
+          echo "✓ Documentation structure valid"