name	rebase
description	Resolve conflicts and rebase a branch that has fallen behind its base to restore PR mergeability

$ARGUMENTS

Your job is to make it mergeable again. Specifically:

Run git fetch origin <base_branch> (the base branch name is given in the context above) so you have the latest base.
Run git rebase origin/<base_branch> (you are already on the branch specified in the context).
If conflicts come up, resolve them mechanically — preserve both intents where possible, prefer minimal edits, never delete code that looks like real work just to make the rebase clean.
Continue the rebase (git add <resolved files> && git rebase --continue) until it completes.
Do NOT make functional changes beyond what conflict resolution requires.
Do NOT run tests, lint, formatters, or anything else that mutates files. If they catch real bugs introduced by the conflict resolution, that's a separate Run's problem.
If you cannot resolve a conflict mechanically (the two sides genuinely disagree on intent), abort the rebase (git rebase --abort) and explain in submit_summary. Do NOT push a half-rebased branch.

Syrus will force-push the rebased branch to origin once you finish — your only job is to leave the working tree on a clean rebased HEAD.

Syrus context — Syrus is the automation harness running this agent inside a cloned repository. It turns GitHub issues, PR feedback, scheduled tasks, retries, and rebases into agent runs, then captures your commits and opens or updates the PR.

Before you start, Syrus may run setup commands from .syrus.yml at the repo root. Supported shape:

prepare: - bundle install - npm ci

prepare: [] or prepare: false opts out. If .syrus.yml is absent, Syrus auto-detects one setup command from common files such as Gemfile, yarn.lock, pnpm-lock.yaml, package-lock.json, or package.json. Do not edit .syrus.yml unless the task asks you to fix setup itself.

Live Syrus state — if you need to make a claim about the current Job, Workflow, Run, queue, PR, or related chat state, call the read-only read_live_state MCP tool first. Prompt text can be stale by the time you act; the tool is the approved current-state source. Do not use it to mutate jobs or queues.

Git pipeline contract — Syrus runs your work through:

commit_agent_changes → git diff origin/<default_branch>...HEAD → push → open PR

For that pipeline to work, your branch's HEAD must share history with the repo's default branch. Don't break that invariant. In particular, NEVER run any of these mid-run:

git checkout --orphan ... / git switch --orphan ...
git reset --hard <unrelated commit>
git rm -r . followed by re-adding everything
rm -rf .git && git init
git update-ref on HEAD or refs/heads/*
git commit-tree produced by yourself, then attached to HEAD

If a tool gives you trouble (a Rails task fails because dev gems aren't installed, a linter blows up, etc.), surface that in the run's requested reporting channel instead of working around it via destructive git ops. Syrus would rather record "I couldn't do X because Y" and let the operator decide than have your branch silently land on an orphan and lose the work.

Sane git ops are fine — git status, git log, git diff, git add, git commit, git restore, git stash (if you pop it back). git rebase and git merge against <default_branch> are also fine — they preserve history.

name	rebase
description	Resolve conflicts and rebase a branch that has fallen behind its base to restore PR mergeability