fix(tasktree): align active timeline presentation

internal/tasktree/store.ts

@@ -154,7 +154,12 @@ export class TaskTreeStore {
       LEFT JOIN tasktree_tasks t ON t.group_id=g.id
       LEFT JOIN tasktree_execution_reports r ON r.task_id=t.id
       GROUP BY g.id
-      ORDER BY g.updated_at DESC, g.name
+      ORDER BY GREATEST(
+        g.updated_at,
+        COALESCE(MAX(t.updated_at),g.updated_at),
+        COALESCE(MAX(r.created_at),g.updated_at),
+        COALESCE((SELECT MAX(m.created_at) FROM tasktree_milestones m WHERE m.group_id=g.id),g.updated_at)
+      ) DESC, g.name
     `);
     return result.rows.map(overviewRow);
   }
@@ -338,11 +343,25 @@ export class TaskTreeStore {
 
   async createReport(input: { taskId: string; title: string; body: string; status?: string }): Promise<ExecutionReport> {
     await this.ensureSchema();
-    const result = await this.pool.query(
-      "INSERT INTO tasktree_execution_reports (id,task_id,title,body,status) VALUES ($1,$2,$3,$4,$5) RETURNING *",
-      [`tr_${randomUUID()}`, input.taskId, input.title, input.body, input.status ?? "succeeded"]
-    );
-    return reportRow(result.rows[0]);
+    const client = await this.pool.connect();
+    try {
+      await client.query("BEGIN");
+      const result = await client.query(
+        "INSERT INTO tasktree_execution_reports (id,task_id,title,body,status) VALUES ($1,$2,$3,$4,$5) RETURNING *",
+        [`tr_${randomUUID()}`, input.taskId, input.title, input.body, input.status ?? "succeeded"]
+      );
+      await client.query(
+        "UPDATE tasktree_groups g SET updated_at=now() FROM tasktree_tasks t WHERE t.id=$1 AND g.id=t.group_id",
+        [input.taskId]
+      );
+      await client.query("COMMIT");
+      return reportRow(result.rows[0]);
+    } catch (error) {
+      await client.query("ROLLBACK").catch(() => {});
+      throw error;
+    } finally {
+      client.release();
+    }
   }
 
   async listReports(taskId: string): Promise<ExecutionReport[]> {