Add CI workflow for automated testing and build processes, including separate pipelines for server and client. Update package.json and package-lock.json with new testing dependencies and scripts. Implement Vitest configuration and setup for comprehensive testing of application components and APIs.

Author: isaaclins

.github/workflows/ci.yml

@@ -0,0 +1,75 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  # Pipeline A: Server (test → build)
+  server-pipeline:
+    name: Server Pipeline
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.21"
+
+      - name: Make test script executable
+        run: chmod +x tests/server/run.sh
+
+      - name: 🧪 Run server tests
+        run: tests/server/run.sh
+
+      - name: 🔨 Build server executable
+        run: |
+          cd excalidraw-server
+          go build -o excalidraw-server
+          echo "✅ Server built successfully"
+
+      - name: Upload server artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: excalidraw-server
+          path: excalidraw-server/excalidraw-server
+
+  # Pipeline B: Client (test → build)
+  client-pipeline:
+    name: Client Pipeline
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+          cache-dependency-path: excalidraw-app/package-lock.json
+
+      - name: Make test script executable
+        run: chmod +x tests/client/run.sh
+
+      - name: 🧪 Run client tests
+        run: tests/client/run.sh
+
+      - name: 🔨 Build client
+        run: |
+          cd excalidraw-app
+          npm ci
+          npm run build
+          echo "✅ Client built successfully"
+
+      - name: Upload client artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: excalidraw-client
+          path: excalidraw-app/dist