BEGIN; CREATE TABLE IF NOT EXISTS agents_backup_cleanup_20250729 AS SELECT * FROM agents; ALTER TABLE agents DROP COLUMN IF EXISTS marketplace_published_at; ALTER TABLE agents DROP COLUMN IF EXISTS download_count; ALTER TABLE agents DROP COLUMN IF EXISTS config; DROP INDEX IF EXISTS idx_agents_marketplace_published_at; DROP INDEX IF EXISTS idx_agents_download_count; DROP INDEX IF EXISTS idx_agents_config; ALTER TABLE agents DROP CONSTRAINT IF EXISTS agents_config_structure_check; COMMIT;