git-surgeon gives agents surgical Git primitives

This is the right kind of agent infrastructure: not a bigger model, but a smaller blast radius around Git history.

• –Hunk-level primitives give agents a precise unit of work instead of forcing them to fake `git add -p` or rewrite files after a reset.
• –Split, fixup, move, reword, and undo are the exact history-surgery moves that make autonomous refactors reviewable and reversible.
• –The Jujutsu-inspired, change-centric workflow keeps Git familiar while borrowing the ergonomics that agents actually need.
• –Bundled skills are the real adoption wedge because they let the tool be invoked from the agent itself, not bolted on afterward.