DROP TABLE IF EXISTS webhook_event_drops; DROP INDEX IF EXISTS idx_webhook_deliveries_inflight; DROP INDEX IF EXISTS idx_webhook_endpoints_oauth_app; ALTER TABLE webhook_endpoints DROP COLUMN IF EXISTS oauth_application_id, DROP COLUMN IF EXISTS created_by, DROP COLUMN IF EXISTS verified_at, DROP COLUMN IF EXISTS ownership_confirmed, DROP COLUMN IF EXISTS verification_token, DROP COLUMN IF EXISTS first_failure_at, DROP COLUMN IF EXISTS auto_disabled_at, DROP COLUMN IF EXISTS disabled_reason; ALTER TABLE oauth_applications DROP COLUMN IF EXISTS allowed_webhook_domains;