diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..6bc8c33
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,23 @@
+name: Unit Tests
+
+on:
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run unit tests
+        run: npx ng test --watch=false --no-progress --browsers=ChromeHeadless
diff --git a/.gitignore b/.gitignore
index 70583d7..c5e1b4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,4 @@ testem.log
 # System files
 .DS_Store
 Thumbs.db
+default-cards-*.json
diff --git a/CLAUDE.md b/CLAUDE.md
index aa7cfda..df41487 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -85,3 +85,7 @@ Deploys automatically to GitHub Pages on push to `main` via `.github/workflows/b
 - Font Awesome 6 (free icons) + Mana Symbol fonts for MTG symbols
 - TypeScript 5.9 strict mode
 - SCSS, Prettier (100 char width, single quotes)
+
+## Public Repo
+
+This project is publicly hosted at `robdennis/trappist` and synced from the monorepo via git subtree. GitHub Pages deploys automatically on push to `main` (tests must pass first).