chore: update CI workflow to install lcov and build project before tests

Author: hiddentao

.github/workflows/ci.yml

@@ -21,12 +21,18 @@ jobs:
       with:
         bun-version: latest
 
+    - name: Install system dependencies
+      run: sudo apt-get update && sudo apt-get install -y lcov
+
     - name: Install dependencies
       run: bun install
 
     - name: Run linting and formatting checks
       run: bun run check
 
+    - name: Build project
+      run: bun run build
+
     - name: Run tests with coverage
       run: bun test --coverage --coverage-reporter=lcov