How do I sync my data (and use it)

Mainly I have this data:

• working projects, out of sync. It’s very critical to avoid data loss. I use Borg for daily backup.
• wiki library, synced by syncthing, two-way (data storage ↔ phone and tablet). To avoid data loss, I am using Git and 1-hours backup using Borg + 5 versions managed by syncthing. Additionally, my syncthing server usually always online, to avoid sync conflicts. Ignored directories: .obsidian, .git. I also place here additional data:
  • fiction books (notes synced by kohighlits, files by dir2opds), placed in papis/fiction directory
  • technical books, research papers and other documents with notes, placed in papis directory
  • my art, placed in scketch directory
  • saved articles NOTE: Notes are placed right next to a book or file: book.md and book.pdf
• music, synced by syncthing, one way (data storage → phone and tablet), to download/delete some files, I can ssh into my server and edit it there. I use it mostly to listen music offline.
• photos from tablet and phone, synced by syncthing, one way (phone and tablet → data storage), to avoid data loss. I import them into library using darktable and then delete from phone and tablet manually after processing.
• taskwarrior data (GTD), managed by taskd server. sorted photos, journals, etc.
• videos are manged by samba server.

Check also maintenance.