{"id":"chat-group-size-cap-500","text":"`add_member` raises `ValueError` if the group already has 500 or more members, enforcing a hard cap on group size.","truth_value":"IN","source":"entries/2026/06/05/chat-system-chat_system.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"chat-group-size-cap-500","truth_value":"IN","reason":"premise"}]}}