Limit trust_levels on specified group

Okay, I have this lurkers badge and it’s currently working:

-- Lurkers: users who viewed topics but did not reply in the last 30 days,
-- but stop awarding (and revoke) once they’ve received ≥3 accepted answers
WITH recent_readers AS (
  SELECT DISTINCT user_id
  FROM user_visits
  WHERE visited_at > CURRENT_DATE - INTERVAL '30 days'
    AND posts_read > 0
),
recent_repliers AS (
  SELECT DISTINCT user_id
  FROM posts
  WHERE created_at > CURRENT_DATE - INTERVAL '30 days'
    AND post_number > 11
    AND deleted_at IS NULL
),
recent_solutions AS (
  -- users whose own topics have had ≥3 accepted answers in the last 30 days
  SELECT t.user_id
  FROM posts p
  JOIN post_custom_fields pc
    ON pc.post_id = p.id
   AND pc.name = 'is_accepted_answer'
  JOIN topics t
    ON t.id = p.topic_id
  WHERE p.created_at > CURRENT_DATE - INTERVAL '30 days'
    -- exclude self-accepts if you want only answers by others:
    AND p.user_id <> t.user_id
  GROUP BY t.user_id
  HAVING COUNT(*) >= 3
)
SELECT
  u.id        AS user_id,
  u.username_lower AS username,
  u.last_seen_at,
  CURRENT_TIMESTAMP AS granted_at
FROM users u
JOIN recent_readers rr
  ON rr.user_id = u.id
LEFT JOIN recent_repliers rp
  ON rp.user_id = u.id
LEFT JOIN recent_solutions rs
  ON rs.user_id = u.id
WHERE rp.user_id IS NULL         -- never replied in last 30d
  AND rs.user_id IS NULL         -- hasn’t yet received 3 solutions in last 30d
  AND u.active = TRUE
ORDER BY u.last_seen_at DESC

I’m sure it could be improved and I didn’t finish at testing it, but my request here is to add a trust_level limitation (to trust_level_1) and I understand that I need an API call or a Plugin.

This initiative is looking for the plugin. Please send a quotation and I will analize it, fast payment and development.