Every M5c-1 item of the spec's section 13 passed against a build of m5c1 with the review's fixes: clean, untrusted and secret turns routed as decided, a remembered fact concluded at once and deleted by undo, a secret session's memory write skipped, and an outage waited out and drained with nothing sent twice. The check's three rift workspaces were deleted afterwards. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>