Revamp CI workflow for complete testing

.github/workflows/complete.yml

@@ -0,0 +1,84 @@
+name: CI - Complete
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+jobs:
+  full-testing:
+    name: Complete Quality Control (Unit, Integration & System Tests)
+    runs-on: ubuntu-latest
+    services:
+      mysql:
+        image: mysql:8
+        env:
+          MYSQL_ROOT_PASSWORD: password
+          MYSQL_DATABASE: goeventsnow_db
+        ports:
+          - 3306:3306
+        options: --health-cmd="mysqladmin ping --silent" --health-interval=10s --health-timeout=5s --health-retries=5
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Set up Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install Dependencies
+        run: | 
+          cd frontend
+          npm install
+
+
+      - name: Compile Server & Run Backend Unit, Integration & System Test 
+        run: |
+          cd backend
+          mvn clean verify -Dtest="es.goeventsnow.backend.unit.EventTest,es.goeventsnow.backend.api.EventApiTest,es.goeventsnow.backend.integration.EventBBDDTest"
+
+      - name: Run Frontend Unit & Integration tests
+        run: |
+          cd frontend
+          npx ng test --coverage 
+
+
+            # --- PASO 2: PREPARACIÓN PARA TESTS DE SISTEMA (E2E) ---
+
+      - name: Instalar herramientas de espera
+        run: sudo apt-get install netcat-openbsd
+
+      - name: Arrancar Backend en segundo plano
+        env:
+          SPRING_DATASOURCE_URL: jdbc:mysql://localhost:3306/goeventsnow_db?useSSL=false&serverTimezone=UTC
+          SPRING_DATASOURCE_PASSWORD: password
+        run: |
+          cd backend
+          mvn spring-boot:run &
+          echo "Esperando a que el backend esté listo en el puerto 8080..."
+          timeout 60s sh -c 'until nc -z localhost 8080; do sleep 5; done'
+
+      - name: Arrancar Frontend en segundo plano
+        run: |
+          cd frontend
+          npx ng serve --host 0.0.0.0 &
+          echo "Esperando a que el frontend esté listo en el puerto 4200..."
+          timeout 60s sh -c 'until nc -z localhost 4200; do sleep 5; done'
+
+      # --- PASO 3: EJECUCIÓN TEST DE SISTEMA (SELENIUM) ---
+
+      - name: Ejecutar Test de Sistema (Selenium)
+        # Este test de Java (backend) probará la UI del frontend (localhost:4200)
+        # que a su vez llama al backend (localhost:8080)
+        run: |
+          cd backend
+          mvn test -Dtest=es.goeventsnow.backend.e2e.SeleniumTest