[November 24th] I then found out that:
- My daily backup didn't run since April 2019 because of a wrong file extension name in the configuration ("tar.lz" instead of expected "tar.lzma")
- The domain name of the offsite server I used to send backups to isn't registered anymore

But worse...

My web host's basic backup FTP quota is 100 GB which would be insufficient for my complete backup even if it was working, and that 2.6 GB would have been taken by GoPro videos I took with my ex and hosted on a long-defunct personal website. 😓

Task list:

• 
  
• ✅ Fix the backup configuration
• ✅ Start the DB server in read-only crash recovery mode, the only it will accept
• ✅ Delete the videos
• ✅ Perform a backup of the existing data state
• ✅ Empty the database and reimport the dataDoigts croisés
• ✅ Enable #Friendica database cleanup

[November 26th] And we're back online after yet more adventures in a just-sized web server, unfortunately the direct upgrades (more memory, SSD) are unavailable at my current web host. I tried Hetzner but their entry-level offer is overkill for my needs.