2026-08-04 — Git concurrency enshittification

Documented why Git worktrees and GitButler-style virtual branches only partially fix concurrent and agentic workflows, and how a Phase A userspace stack (stable paths, op-log WC, CoW/CAS, headless sandboxes) bridges to Phase B filesystem editions in connectome-fs.

Stubs point at remaining Git/jj responsibilities after editions and a near-term how-to for choosing workspace strategies.