kami
bcc59d2164
New brief_echo stage before the planner in role_pipeline: the model restates the analyst brief as a structured artifact, and a deterministic gate (checkBriefEcho, opt-in via brief_echo=true) diffs the restatement against the original brief. On divergence — dropped requirements (Jaccard coverage < 0.34) or hallucinated files — it emits BriefEchoMismatchEvent and fails the stage retryably, so a misread brief never reaches plan generation. The diff (BriefEchoDiff) is a pure function of two recorded artifacts, so it is replay-safe and records no observation; the event fires only on mismatch, for audit. Symbols are recorded but non-blocking in v1. Mirrors the groundBrief- References gate. role_pipeline only; freestyle_planning wiring is a follow-up. Runtime install (like research): copy brief_echo.json + brief_echo.md and the [[artifacts]] block into ~/.config/correx.