ci: add test workflow

.github/workflows/test-ci.yml

@@ -0,0 +1,63 @@
+name: Test CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  backend-test:
+    name: Go Test Matrix
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: ['1.21', '1.22', '1.23']
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go ${{ matrix.go-version }}
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: Download dependencies
+        working-directory: server
+        run: go mod download
+
+      - name: Build
+        working-directory: server
+        run: go build ./...
+
+      - name: Test
+        working-directory: server
+        run: go test ./... -v -race
+
+  frontend-test:
+    name: Node Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: web/package-lock.json
+
+      - name: Install dependencies
+        working-directory: web
+        run: npm ci
+
+      - name: Type Check
+        working-directory: web
+        run: npx tsc --noEmit -p tsconfig.json
+
+      - name: Test
+        working-directory: web
+        run: npm run test -- --coverage
+
+      - name: Build
+        working-directory: web
+        run: npm run build