feat(phase-1): Complete foundation setup

- Add User model and authentication system with JWT cookies
- Implement login/logout routes and protected dashboard
- Add Alembic database migration configuration
- Add create_admin.py script for initial user setup
- Make ContentGenerator and ImageGenerator lazy-initialized
- Add comprehensive API keys setup documentation
- Fix startup errors when services unavailable

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

scripts/create_admin.py

@@ -0,0 +1,90 @@
+"""
+Script para crear el usuario administrador inicial.
+"""
+
+import sys
+from pathlib import Path
+
+# Agregar el directorio raíz al path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from app.core.database import SessionLocal
+from app.core.security import get_password_hash
+from app.models.user import User
+
+
+def create_admin(username: str, email: str, password: str, full_name: str = None):
+    """Crear usuario administrador."""
+    db = SessionLocal()
+
+    try:
+        # Verificar si ya existe
+        existing = db.query(User).filter(
+            (User.username == username) | (User.email == email)
+        ).first()
+
+        if existing:
+            print(f"⚠️  Usuario '{username}' o email '{email}' ya existe")
+            return False
+
+        # Crear usuario
+        user = User(
+            username=username,
+            email=email,
+            hashed_password=get_password_hash(password),
+            full_name=full_name or username,
+            is_active=True,
+            is_superuser=True
+        )
+
+        db.add(user)
+        db.commit()
+
+        print(f"✅ Usuario administrador creado: {username}")
+        print(f"   Email: {email}")
+        print(f"   Password: {'*' * len(password)}")
+        return True
+
+    except Exception as e:
+        print(f"❌ Error: {e}")
+        db.rollback()
+        return False
+
+    finally:
+        db.close()
+
+
+def main():
+    """Main entry point."""
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Crear usuario administrador")
+    parser.add_argument("--username", "-u", default="admin", help="Nombre de usuario")
+    parser.add_argument("--email", "-e", required=True, help="Email del usuario")
+    parser.add_argument("--password", "-p", required=True, help="Contraseña")
+    parser.add_argument("--name", "-n", help="Nombre completo")
+
+    args = parser.parse_args()
+
+    create_admin(
+        username=args.username,
+        email=args.email,
+        password=args.password,
+        full_name=args.name
+    )
+
+
+if __name__ == "__main__":
+    # Si no hay argumentos, usar valores por defecto para desarrollo
+    if len(sys.argv) == 1:
+        print("Uso: python create_admin.py -e email@example.com -p password")
+        print()
+        print("Creando usuario admin por defecto para desarrollo...")
+        create_admin(
+            username="admin",
+            email="admin@consultoria-as.com",
+            password="admin123",
+            full_name="Administrador"
+        )
+    else:
+        main()