Proposal: drop the main-screen camera preview, use Super mirror instead #68

Plan: remove the live camera preview from the main screen and use Super mirror whenever someone wants to see a camera.

Why:

• The main-screen preview mainly proves the app is running. It can't be watched while driving.
• When parked, the factory 360 view already helps with manoeuvring.
• It looks impressive at first ("the app can do that, cool"), but adds nothing a dashcam actually needs.

To settle before doing it:

• What the main screen shows instead (recording state, storage, warnings).
• How to check that each camera works (e.g. through Super mirror).
• What changes in the camera scheduler once the main-screen PREVIEW holder and its outputs are gone.

Status: proposal, not scheduled.