[Suggestion] Browser notifications when first person enters queue

[stagrim]

Sometimes when the queue is empty and someone enters they quietly wait. This could easily be missed and the student has to wait longer then they should.

Two possible solutions comes to mind. One fun, one not as fun.

• Use websockets, or similar, to always keep queue in sync, and send a notification when someone enters the queue when it was empty previously. Alternatively be able to set, or track, a room in Sigrid monitor to alert while refreshing. Use localstorage or something to know when a queue was previously empty.
• Have some text in Sigrid to suggest the student to put their hand up when entering a empty room.

[stagrim]

Websockets should also solve #35

[stagrim]

If a rewrite is on the table I would recommend a Scala backend using HTMX to keep complexity low and easily maintainable.