Why is Idempotent seed strategies important in Laravel applications, and what problem does it solve for developers?

Why is Idempotent seed strategies important in Laravel applications, and what problem does it solve for developers? The key reason to understand idempotent seed strategies is that Laravel applications are usually composed of several layers that must work together predictably. Seeders that can safely be re-run are easier to use in deployment and local setup workflows. Ignoring that boundary can lead to duplicated logic, poor security, unnecessary database work, or code that is difficult to test. Why it matters in practice: Seeders provide intentional data-loading workflows while model factories generate realistic model records for development and testing. The specific focus here is idempotent seed strategies: Seeders that can safely be re-run are easier to use in deployment and local setup workflows. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.