Add CI workflow for automated testing (#4)

* Initial plan

* Add GitHub workflow for running tests

Co-authored-by: GochoMugo <[email protected]>

* Add explicit permissions to test workflow for security

Co-authored-by: GochoMugo <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: GochoMugo <[email protected]>

Author: Copilot

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: Test
+
+on:
+    push:
+    pull_request:
+
+jobs:
+    test:
+        runs-on: ubuntu-latest
+        permissions:
+            contents: read
+
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v4
+
+            - name: Set up Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: "22"
+                  cache: "npm"
+
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Run tests
+              run: npm test