merge

---
name: merge
description: Merge the winning agent's branch into base, archive losers, and clean up worktrees. Use when the user runs /hub:merge or asks to land the winning AgentHub result and tidy the session.
category: Engineering
version: 1.0.0
tools: []
---

# Hub Merge — Land Winning Result

Merge the best agent's branch into base, archive losers via tags, and clean up worktrees.

## Steps

1. Identify winner (from most recent eval, or via --agent flag).
2. Merge winner into base_branch with --no-ff.
3. Archive losing branches via git tags (commits preserved, refs deleted).
4. Clean up worktrees.
5. Write merge summary to .agenthub/board/results/.
6. Update session state to "merged".

## Safety Guarantees

- **Confirm before merging** — show diff summary first.
- **Never force-push** — merge always uses --no-ff for clear history.
- **Archive, don't delete** — losers' commits preserved via hub/archive/{session-id}/{agent-id} tags.
- **Clean worktrees** — remove orphan directories.

## Output

Confirm to user:
- Winner merged into {base_branch}
- Losers archived with tags hub/archive/{session-id}/{agent-N}
- Worktrees cleaned
- Session state: merged

---

Safe multi-agent session cleanup.