Force start for n hours

[jtagcat]

Description of the issue

Either I forget or I have to leave before syncing¹ finishes. I have to instruct users to find hte app, go to STATUS and switch it to `FOLLOW RUN CONDITIONS'.

Proposal

Allow setting force conditions for n hours. Either by a button under STATUS (better UX) or an app setting to always revert after a period.

Footnotes

1. The app needs the inital setup to be clicked through (next-next-next), and then continues where it left off. Or some certain devices, battery optimizations killed the radio star. ↩

[jtagcat]

Related: #1025

[NA0341]

Wouldn't it be a better Solution to run until Everything is synced?
In other words: Pause at first "Sync complete" status.

And an optional time interval for Syncthing to run after "Sync complete".

[jtagcat]

100% synced may never happen: a device offline, a conflict, filesystem incompatibility, other issues. On the contrary, the status may start out as 100% synced, but as the local files are scanned and peers exchange metadata, it might go down-and-100% etc.

This is meant to kickstart a was-offline-for-a-while device. Getting to 80% or 90% is success. The rest can happen as part of regular syncing.