Enhance CI workflow with database and setup steps

Updated CI workflow to include database service and additional steps for backend and frontend setup.

Author: fredericoahb

.github/workflows/makefile.yml

@@ -0,0 +1,79 @@
+name: CI - Build & Test
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    name: Build & Validate
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:16-alpine
+        env:
+          POSTGRES_DB: carteirinhas_db
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd "pg_isready -U postgres"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+
+      - name: Install backend dependencies
+        run: |
+          cd backend
+          pip install -r requirements.txt
+
+      - name: Setup database
+        run: |
+          PGPASSWORD=postgres psql -h localhost -U postgres -d carteirinhas_db -f database/schema.sql
+          PGPASSWORD=postgres psql -h localhost -U postgres -d carteirinhas_db -f database/seeds.sql
+
+      - name: Test backend starts
+        run: |
+          cd backend
+          echo "DATABASE_URL=postgresql://postgres:postgres@localhost:5432/carteirinhas_db" > .env
+          timeout 10 uvicorn app.main:app --host 0.0.0.0 --port 8000 &
+          sleep 5
+          curl -f http://localhost:8000/health || exit 1
+          echo "Backend OK"
+
+      - name: Test API processing
+        run: |
+          curl -f -X POST http://localhost:8000/api/processar || exit 1
+          echo "Processing OK"
+          curl -f http://localhost:8000/api/resumo || exit 1
+          echo "Resumo OK"
+          curl -f http://localhost:8000/api/alertas || exit 1
+          echo "Alertas OK"
+
+      - name: Install frontend dependencies
+        run: |
+          cd frontend
+          npm install
+
+      - name: Build frontend
+        run: |
+          cd frontend
+          NEXT_PUBLIC_API_URL=http://localhost:8000 npm run build