CLI Download Clear

`ed download clear`

Forgets what has finished.

Usage:

ed download clear [--yes] [--json]

Options:

Name	Type / values	Default	What it does
`--yes`	flag	off	Applies the clear. Without it, only reports how many records match.
`--json`	flag	off	Emits one JSON document on stdout.

There are no positional arguments. The preview counts the done, failed and interrupted records and leaves queued, resolving and downloading alone. Add --yes to apply it. To remove active work safely, cancel it first and then clear it. Neither command deletes a downloaded file.

--json shape:

{
  "preview": true,
  "remaining": 11,
  "removed": 0,
  "wouldRemove": 9
}

Examples:

ed download clear
ed download clear --yes
ed download cancel && ed download clear --yes --json

$ ed download clear --yes
cleared 9

Behaviour: previewing or clearing an empty queue reports zero and exits 0. A confirmed change posts downloadQueueChanged, so a running Edith reloads the same queue. Clear never removes a queued or running record.