dibs

Single-occupancy lock for a git worktree or standalone working directory: a vendor-neutral, cross-platform CLI so only one coding agent mutates a repository checkout at a time. claim/release/check use an atomic exclusive-create lockfile keyed by the nearest git worktree root, falling back to directory realpath outside git, with pid-based liveness that self-heals a dead holder and respects a live one. No flock, no native dependency. bonsai and the discipline hooks consume it.