Function openWritableDatabase

apps/desktop/main/worker/query/session/core.ts:16–25

(sessionId: string)

 * 会话索引需要写入数据
 */
export function openWritableDatabase(sessionId: string): Database.Database | null {
  const dbPath = getDbPath(sessionId)
  try {
    const db = new Database(dbPath)
    db.pragma('journal_mode = WAL')
    return db
  } catch {
    return null
  }
}

/**
 * 打开数据库（只读模式，不使用缓存）