LarryAnglin/helpdesk-oss ? reverse-engineered prompt

Build me a modern help desk app for teams that manage support for more than one client or department. I want each organization to be fully separate so tickets, users, and history never mix, with login, admin, agent, and end user roles. The main experience should let people create tickets, assign them, add comments, track status, resolve issues, and see a clean dashboard for what needs attention.

Please also add email based ticket updates, search across tickets, a simple self help assistant that can suggest answers from documentation, and basic notifications so users know when something changes. Use a clean, professional UI that feels easy for non technical people to use, and make it ready to run as a self hosted app with Firebase on the backend. If you need current setup details, look up the latest docs online and wire it up in a practical way.