Early Morning Breakup

[MymsMan]

The thing I don't like about the current auto processing is that it stops everything, whereas I only want to stop the heavy I/O stuff.
i.e. I'd want youtube-dl and thumbnails to run, but not decrypt or undelete

The original design proposal was that the scan phase would contain the quick actions that didn't involve reading/witing the main recordng fille and would not be constrined while the long running, more intensive actions like decrypt, detectads would be queued to be processed later, optionally when no recordings were active.
As implemented however the restrictions were imposed on both the scan and deq phases.