* Update LE certs:
	* Exec wildcard script in certbot.
	* Exec mail script on host.
	* Restart proxy.
	* Update calendar event at LE cert expiration.

* Rotate passwords:
	* Nix:   root, voronind.
	* Phone: user.
	* Pass:  user.

* Backup:
	* Archive: book, music, porn.
	* Validate old backups.
	* Copy backup drive to cold desktop storage.
	* Copy backup drive to external backup (backpack HDD, keys thumb drive).

* Update:
	* System: home, desktop, work, dasha, laptop, vpn, fsight, phone, tablet, dashaphone.
	* Apps:   home, desktop, work, dasha, laptop, vpn, fsight, phone, tablet, dashaphone.
	* Home:   docker, nextcloud apps, hass apps.
	* Router: firmware.
	* Termux: phone, tablet.