Off-topic, but isn’t Fedora technically upstream from RHEL?

It’s a good idea in theory, but it’s a challenging concept to have to explain to immigration officials at the airport.

I think you’re spot on: Markdown files with SyncThing. That’s my setup as well, you just can’t beat markdown files as a back-end for flexibility and future-safety in my opinion.

Some things to consider:

• Editor: The obvious no-nos are editors with built-in AI support or cloud storage. FOSS editors are highly recommended. If you find a good offline FOSS WYSIWYG-style markdown editor, let us know. I use Neovim myself, but I’m often asked for recommendations by non-geeks.
• Operating system: You should be fine on MacOS (for now), but Linux is a great option for desktop. Windows is a loose canon with their AI snapshot approach, definitely avoid. What are you syncing to? Mobile devices are a lot more difficult to keep control of.
• Encrypted devices: Make sure you have full disk encryption on all devices and on all your backups.

Should really be prefaced by: Don’t bring your phone. Write the phone number you plan to call if arrested on your lower arm in sharpie. If for some reason you have to bring your phone, read the following.