Why is Token mismatch handling important in Laravel applications, and what problem does it solve for developers?

Why is Token mismatch handling important in Laravel applications, and what problem does it solve for developers? The key reason to understand token mismatch handling is that Laravel applications are usually composed of several layers that must work together predictably. A request with an invalid or missing token can be rejected by Laravel's CSRF middleware. 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: Laravel's web middleware includes CSRF protections for state-changing requests by requiring an expected token in supported form workflows. The specific focus here is token mismatch handling: A request with an invalid or missing token can be rejected by Laravel's CSRF middleware. 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.