feat: add database seed with demo data and Docker Compose setup

- Seed creates demo tenant, users (admin, contador, visor)
- Creates tenant schema with cfdis, iva_mensual, alertas tables
- Inserts 50 demo CFDIs and 6 months of IVA records
- Docker Compose with PostgreSQL, API, and Web services
- Demo credentials: admin/contador/visor @demo.com / demo123

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,53 @@
+version: '3.8'
+
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: horux360-db
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: horux360
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  api:
+    build:
+      context: .
+      dockerfile: apps/api/Dockerfile
+    container_name: horux360-api
+    environment:
+      NODE_ENV: development
+      PORT: 4000
+      DATABASE_URL: postgresql://postgres:postgres@postgres:5432/horux360?schema=public
+      JWT_SECRET: your-super-secret-jwt-key-min-32-chars-long-for-development
+      JWT_EXPIRES_IN: 15m
+      JWT_REFRESH_EXPIRES_IN: 7d
+      CORS_ORIGIN: http://localhost:3000
+    ports:
+      - "4000:4000"
+    depends_on:
+      postgres:
+        condition: service_healthy
+
+  web:
+    build:
+      context: .
+      dockerfile: apps/web/Dockerfile
+    container_name: horux360-web
+    environment:
+      NEXT_PUBLIC_API_URL: http://localhost:4000/api
+    ports:
+      - "3000:3000"
+    depends_on:
+      - api
+
+volumes:
+  postgres_data: