Fix: Assigning task to non-existent project returns 500 instead of 400 #19
Description
TL;DR
Sending an invalid projectId to PATCH /api/tasks/{id}/project causes an unhandled 500 error instead of a proper validation response.
Current State
The endpoint saves without verifying the projectId exists. The FK constraint throws an unhandled exception.
Desired State
The endpoint should validate the projectId and return 400 Bad Request with a clear message if the project doesn't exist.