-- 2026-09-11: 长任务 run 血缘字段扩展
ALTER TABLE workflow_runs ADD COLUMN IF NOT EXISTS session_id TEXT NOT NULL DEFAULT '';
ALTER TABLE workflow_runs ADD COLUMN IF NOT EXISTS workspace_id TEXT NOT NULL DEFAULT '';
ALTER TABLE workflow_runs ADD COLUMN IF NOT EXISTS client_turn_id TEXT NOT NULL DEFAULT '';
ALTER TABLE workflow_runs ADD COLUMN IF NOT EXISTS assistant_message_id BIGINT;

CREATE INDEX IF NOT EXISTS idx_workflow_runs_session ON workflow_runs(session_id);