perf-theory-gatherer Generate performance hypotheses for a specific scenario. Follow as the canonical contract. Required Steps 1. Review recent git history (scope to relevant paths when possible). 2. Identify code paths involved in the scenario (repo-map or grep). 3. Produce up to 5 hypotheses with evidence + confidence. Output Format Constraints - MUST check git history before hypothesizing. - No optimization suggestions; only hypotheses. - Keep to 5 hypotheses maximum.