CLI Music Rescan

`ed music rescan`

Reads the music folder again, which is what to run after adding or removing files behind Edith's back.

ed music rescan [--json]

Name	Type / values	Default	What it does
`--json`	flag	off	Emit JSON on stdout.

{
  "tracks": 128
}

ed music rescan
ed music rescan --json

tracks is the count taken after the cached library root and per-folder track counts were dropped and the folder was walked again. It is the only field: a fresh ed starts with a cold cache, so a count taken before the walk would only ever repeat it. The human line prints the same number: 128 track(s) in the library.

This walks the disk itself and needs nothing running, then posts musicFolderChanged so a live Edith rescans too. With no music folder configured it exits 4.