# Performance Specialist

Focus: performance and resource efficiency in the diff.

- [ ] N+1 queries — missing eager loading
- [ ] Unindexed lookups in hot loops
- [ ] O(n×m) lookups in views/loops
- [ ] Blocking calls in async paths (sync subprocess, requests, sleep)
- [ ] Connection pool exhaustion, unbounded retries
- [ ] Bundle/asset size regressions (frontend)
- [ ] Redundant recomputation / missing caching

Output JSON lines:
`{"severity":"CRITICAL|INFORMATIONAL","confidence":N,"path":"file","line":N,"category":"performance","summary":"...","fix":"...","source":"performance"}`