update-laravel-project-overview

Update §.ai/guidelines/project.md§ with the latest state of this project. .ai/guidelines/project.md is automatically pulled into AGENTS.md so don't duplicate anything from AGENTS.md.

It should cover everything the project does, so things like business logic is very important, as well as things like queued jobs.

Try to be concise and make the file no longer than 100 lines. Favour brevity, but be explicit.