Tried, never reached

Adding a list Open lists.php and add one entry to the $LISTS array. It appears in the sidebar with a live count, works in both modes, and needs no database changes.

'price_talk' => [
  'label' => 'Sellers needing a price talk',
  'icon'  => '📉',
  'group' => "Find & win the home",
  'hint'  => 'Sellers you have not discussed price with in 30 days.',
  'where' => "p.stage = 'active_client'
              AND p.last_contacted_at < UTC_TIMESTAMP() - INTERVAL 30 DAY",
],