feat: trace task sources to fixed workflow activations and rounds

internal/storage/mysql/task_source_integration_test.go

@@ -70,6 +70,12 @@ func TestIntegrationTaskSource(t *testing.T) {
 			expectWorkerCode(t, err, "UNAVAILABLE")
 		}
 		f.exec(`UPDATE pulse_tasks SET retry_of=? WHERE namespace_id=? AND id=?`, original.ID, f.resources.NamespaceID, child.Task.ID)
+		// 没有外键时，父任务即使丢失owner，反向流程关联仍能揭示其不是独立任务。
+		activation := executionID(t)
+		f.exec(`INSERT INTO weave_activations(namespace_id,id,workflow_id,step_id,sequence,task_id,input) VALUES (?,?,?,?,1,?,'{}')`, f.resources.NamespaceID, activation, executionID(t), executionID(t), original.ID)
+		_, err = f.tasks.GetTaskSource(ctx, f.token, child.Task.ID)
+		expectWorkerCode(t, err, "UNAVAILABLE")
+		f.exec(`DELETE FROM weave_activations WHERE namespace_id=? AND id=?`, f.resources.NamespaceID, activation)
 		f.exec(`UPDATE orbit_credentials SET revoked_at=UTC_TIMESTAMP(6) WHERE namespace_id=? AND id=?`, f.resources.NamespaceID, f.resources.CredentialID)
 		_, err = f.tasks.GetTaskSource(ctx, f.token, child.Task.ID)
 		expectWorkerCode(t, err, "UNAUTHENTICATED")