arena
Spawn N parallel candidates at the same task, pick a base, graft the strongest parts of the losers into it. Use for /arena, 'arena this', 'throw it in the arena', or when one attempt at a non-trivial artifact would lock in the wrong shape.
Install
git clone https://github.com/cursor/plugins /tmp/plugins && ln -s /tmp/plugins/pstack/skills/arena ~/.claude/skills/arenaFrom README
Arena Fan out N parallel attempts at the same task. Read every candidate end to end. Pick the strongest as the base. Graft the best ideas from the others into it. Verify the synthesized result. Start Open a todolist with one entry per phase before launching anything. Frame Fan out Cross-judge Pick Graft Verify Phase A: Frame The N candidates will receive the same prompt, so the prompt is the contract. State the artifact each candidate is producing. Derive the rubric. State what success looks like for this task, then turn it into 3-6 concrete gradeable criteria. The rubric is the picker's tool in Phase D. Candidates only see the task. Pick the runners. Use the arena runners line in /.cursor/rules/pstack-models.mdc. If the rule or that line is missing, default to one each on claude-opus-5-5-xhigh and grok-4.7-xhigh-fast. An auto or inherit-parent entry in this line or the cross-judge line means the parent model, so omit model for it.
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