After completing a task, spawn reviewer agents to check the output for correctness, edge cases, and simplification. If issues are found, spawn a resolver agent to fix conflicts. Produces 2-3x quality improvement via agent-reviews-agent architecture. Triggers on "verify this", "review loop", "verification loop", "self-review", "agent review agent", "double-check with a subagent", or /subagent-verification-loops. Also triggers on phrases like "have another agent review this", "get a second opinion on this code", or "review and resolve".
