Feat: Agregar estructura PWA Nuxt4 y configuración de desarrollo

Configuración PWA:
- Agregar estructura completa de Nuxt4 para PWA
- Configurar .env.example con variables de entorno
- Preparar aplicación para instalación offline

Configuración Claude Code:
- Agregar .claude/ con settings y hooks
- Configurar entorno de desarrollo con Claude

CI/CD:
- Agregar .gitea/workflows para Gitea Actions
- Preparar pipeline de despliegue automático

Docker:
- Actualizar docker-compose.yml con servicios PWA
- Configurar networking entre servicios

Git:
- Actualizar .gitignore para excluir archivos de build
- Ignorar node_modules y archivos temporales

.gitea/workflows/build-and-deploy.yml

@@ -0,0 +1,60 @@
+name: build-and-deploy
+
+on:
+  push:
+    branches: [ main, master ]
+
+jobs:
+#───────────────── build & push ─────────────────
+  build:
+    runs-on: docker
+    env:
+      REG: ${{ vars.REGISTRY_URL }}
+      APP_NAME: ${{ vars.APP_NAME }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: docker/setup-buildx-action@v2
+      - uses: docker/login-action@v2
+        with:
+          registry: ${{ vars.REGISTRY_URL }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build+push ${{ vars.APP_NAME }}
+        run: |
+          cd nuxt4
+          docker build -t $REG/${{ github.repository_owner }}/$APP_NAME:${{ github.sha }} -t $REG/${{ github.repository_owner }}/$APP_NAME:latest .
+          docker push $REG/${{ github.repository_owner }}/$APP_NAME:${{ github.sha }}
+          docker push $REG/${{ github.repository_owner }}/$APP_NAME:latest
+
+#───────────────── deploy ─────────────────
+  deploy:
+    needs: build
+    runs-on: docker
+    env:
+      REG: ${{ vars.REGISTRY_URL }}
+      REPO_OWNER: ${{ github.repository_owner }}
+      APP_NAME: ${{ vars.APP_NAME }}
+      # Variables de entorno para docker-compose
+      APP_DOMAIN: ${{ vars.APP_DOMAIN }}
+      NUXT_PUBLIC_APP_URL: ${{ vars.NUXT_PUBLIC_APP_URL }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Login to registry
+        run: docker login ${{ vars.REGISTRY_URL }} -u ${{ secrets.REGISTRY_USERNAME }} -p ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Info about environment
+        run: |
+          echo "ℹ️  Deploying ${{ vars.APP_NAME }}"
+          echo "   Domain: ${{ vars.APP_DOMAIN }}"
+          echo "   Image: ${{ vars.REGISTRY_URL }}/${{ github.repository_owner }}/${{ vars.APP_NAME }}:latest"
+          echo "   Network: principal"
+
+      - name: Pull fresh images used in compose
+        run: docker compose pull
+
+      - name: Clean up stack
+        run: docker compose --project-name $APP_NAME down
+
+      - name: Update stack
+        run: docker compose --project-name $APP_NAME up -d --remove-orphans --wait