Method findByEmail

server/src/db/slack-db.ts:101–107

* Find Slack user mapping by email

(email: string)

   * Find Slack user mapping by email
   */
  async findByEmail(email: string): Promise<SlackUserMapping | null> {
    const result = await query<SlackUserMapping>(
      'SELECT * FROM slack_user_mappings WHERE LOWER(slack_email) = LOWER($1)',
      [email]
    );
    return result.rows[0] || null;
  }

  /**
   * Map a Slack user to a WorkOS user