Clarify and restrict group vs individual mentions in work order notes

Define how group mentions versus individual mentions should behave in work order notes, including notification timing, where the message should live, and who is allowed to use each type of mention.

Transcript Context

The team was unsure whether @inspectors should notify immediately or act more like a note that stays with the work order until the assigned inspector reaches that job. They discussed confusion caused by notes that may reference jobs scheduled for the future, where the assigned inspector could change multiple times before the appointment.

They also discussed whether inspectors should be able to tag individual staff members at all. The preferred direction was that inspectors may need to reply into notes or contact office support through the existing support line, but should likely not tag arbitrary individual users from the work order. The team wants clearer intended behavior and possibly permissions that separate group mentions from individual mentions.

A short explanation or demo of the intended mention model was also requested so teams stop relying on assumptions about how mentions work.