cpvalente/ontime ? reverse-engineered prompt

Build me a browser based app for live event time keeping and show management. I want it to let a team create a rundown, schedule items, track the current show time, and cue what is coming next in real time. It should work on any device with a browser, so people in the control room, backstage, or out front can all see the same live updates.

Make it useful for a live production, with separate views for different roles, like directors, operators, backstage, and signage. It should also handle delays and show timing changes clearly, and let the whole team stay in sync.

If it makes sense, include ways to connect with other tools through HTTP, WebSocket, or OSC, and let it run either as a shared app or on its own with the system clock. Look up current docs online if you need to.