Function isChatSessionDb

packages/core/src/query/session-queries.ts:120–125

(db: DatabaseAdapter)

 * 通过核心三表（meta/member/message）存在性快速识别
 */
export function isChatSessionDb(db: DatabaseAdapter): boolean {
  const row = db
    .prepare("SELECT COUNT(*) as cnt FROM sqlite_master WHERE type='table' AND name IN ('meta', 'member', 'message')")
    .get() as { cnt: number } | undefined
  return row?.cnt === 3
}

/**
 * 读取会话元信息