JuiceFS — POSIX-Over-Object-Storage (Explored, Then Set Aside for rclone-to-R2)

Explored JuiceFS to give the corpus a 'path off local.' Verdict: wrong shape for one-person, local-first content work — it's a network drive needing a macOS kernel extension, not Dropbox. Superseded by automated rclone sync to Cloudflare R2. Kept for the hard-won R2-credential recipe (which still works).