[FEAT] Auto-download

[NeonDaniel]

Objective

Add an option and methodology to download updates in the background.

Initial Implementation Requirements

• Behavior must be configurable (maybe part of skill integration)
• There should be some notification that a download is in progress (maybe part of skill integration)
• Ideally, this should prevent shutdown/restart during an update (with an option to override)

Other Considerations

• How can this integrate generically with the shell and skills to warn on shutdown requests
• How does this affect the user interaction flow with the update skill
• How can we prune stale downloads if there is an auto-downloaded update that wasn't applied

[NeonDaniel]

Relevant thread on Matrix

[fromport]

Some kind of progress indicator on the screen would be nice .
0-100% would be nice, but maybe 1-X steps, where each step is explained
eg:
1- check for newer versions V
2- newer version downloading / downloaded V
3- updating new image
4- after upgrade administration, (maybe including a countdown timer till reboot when required)

If one would request reboot/poweroff during upgrade, warn that downloaded info will be erased and new upgrade needs be initiated. ask for confirmation and still honor request.