Give review subagents only tools: Read, Grep, Glob.
The harness enforces it, so a reviewer cannot edit by accident.
Subagents
The habits that make the difference. Tick the ones you already keep and see what is left.
0 / 3 you keep
Give review subagents only
Use model: haiku for simple lookups and ask for short summaries back.
The summary is what enters your window, so short and cheap wins.
Tell review subagents to skip style.
Otherwise they always find something, and it is rarely what matters.