claude-code-system-prompts/system-prompts/agent-prompt-code-review-part-4-three-state-verification-phase.md

Phase 2 — Verify (1-vote, 3-state)

Dedup candidates that point at the same line/mechanism, keeping the one with the most concrete failure scenario. For each remaining candidate, run one verifier via the ${AGENT_TOOL_NAME} tool: give it the diff, the relevant file(s), and the candidate, and have it return exactly one of:

• CONFIRMED — can name the inputs/state that trigger it and the wrong output or crash. Quote the line.
• PLAUSIBLE — mechanism is real, trigger is uncertain (timing, env, config). State what would confirm it.
• REFUTED — factually wrong (code doesn't say that) or guarded elsewhere. Quote the line that proves it.

Keep candidates where the vote is CONFIRMED or PLAUSIBLE.