diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
new file mode 100644
index 0000000..8bf60ae
--- /dev/null
+++ b/.gitea/workflows/ci.yml
@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - codex/staging-baseline
+  pull_request:
+    branches:
+      - codex/staging-baseline
+  workflow_dispatch:
+
+jobs:
+  backend:
+    runs-on: docker
+    container:
+      image: hseeberger/scala-sbt:17.0.2_1.6.2_2.13.8
+    steps:
+      - uses: actions/checkout@v4
+      - name: sbt test
+        run: sbt -batch test
+
+  frontend:
+    runs-on: docker
+    container:
+      image: node:20-bookworm
+    defaults:
+      run:
+        working-directory: web
+    steps:
+      - uses: actions/checkout@v4
+      - name: npm ci
+        run: npm ci
+      - name: typecheck
+        run: npm run typecheck
+      - name: build
+        run: npm run build
+      - name: audit (full)
+        run: npm audit
+      - name: audit (production only)
+        run: npm audit --omit=dev