Description 612 -> 273 chars, body 1124 -> 457 words. Branch patterns, operations, merging, comparison, and the orchestrator contract move to references/. Corrects rebase routing in four places: this skill sent rebase to git-history, which carries no rebase content and disclaims it. Rebase is git-commits'; cherry-pick and revert stay git-history's. Drops a Step 3 gate on a rebase flow this skill does not have.