rebase-worktreelisted

# rebase-worktree Bring one worktree's branch current with the default branch: fetch, show what will replay, then rebase. This never guesses -- it refuses on a dirty tree, hands conflicts back to a human, and never pushes unasked. ## Preconditions Check these before anything mutates, and report before touching history: - **Clean tree.** `git -C <worktree> status --porcelain` must be empty. Dirty: one sentence listing the uncommitted paths, then the structured-question tool with **I committed them, retry** / **Abort**; **Hold** (under a run, scope `clarify`, recorded with `--selection '{"tree":"retry|abort"}' --decided-by rebase-worktree`). Never `git stash` and proceed: moving someone's uncommitted work is not this skill's call. The STOP table under the push gate binds this form too. - **Upstream set.** `git -C <worktree> status -sb` prints the branch line first; no `...origin/<branch>` tracking ref there means no upstream -- stop and report, there's nothing to rebase onto. - **Discover the default branch.** `git -C <worktree> symbolic-ref refs/remotes/origin/HEAD`; if that's unset, fall back to the forge CLI's repo view (`glab repo view` / `gh repo view`). Never hardcode a branch name. ## Stack guards Both checks run before any fetch or rebase; either one refusing ends the run. A single-branch rebase is legal only when the branch is stack-free in both directions. - **Child check:** look up the branch's open MR or PR (`glab mr view <branch>` / `