Git Operation Serialization Preflight Multi-agent workspaces (Claude main + subagents, Hermes batch workers, Codex review helpers, auto-sync daemons, nightly cron) routinely have several git writers active on the same checkout. Without a preflight, mutating git operations collide on / , drop staged work, mislabel commits, or revert another agent's just-landed work. This skill is the standard preflight + serialization wrapper around every mutating git command. When to Use - About to run any of: , , , , , , , , (lock contention is rarer here but possible), . - Dispatching N parallel agents wher…