fix(wechat): route scheduled task cancel and spec updates through Goose MCP

Pass cancel requests to Goose like create instead of inbound title matching,
and add scheduled_task_update_spec so format or execution constraints update
taskSpec without triggering page delivery guards.

Co-authored-by: Cursor <cursoragent@cursor.com>

agent-side-effect-tools.mjs

@@ -33,6 +33,20 @@ export async function executeScheduledTaskCreateTool(args, {
   return workerWarning ? { ...task, workerWarning } : task;
 }
 
+export async function executeScheduledTaskUpdateSpecTool(args, {
+  userId,
+  scheduledTaskService,
+} = {}) {
+  if (!scheduledTaskService) throw new Error('scheduledTaskService 不可用');
+  return scheduledTaskService.updateTaskSpec({
+    userId,
+    taskId: args.taskId,
+    taskSpec: args.taskSpec ?? null,
+    title: args.title ?? null,
+    mergeTaskSpec: Boolean(args.mergeTaskSpec),
+  });
+}
+
 export async function executeScheduleCreateItemTool(args, {
   userId,
   scheduleService,
@@ -134,6 +148,10 @@ export async function commitAgentSideEffectTool(toolName, toolArgs, services) {
     const task = await executeScheduledTaskCreateTool(toolArgs, services);
     return { kind: 'scheduled_task', task };
   }
+  if (name === 'scheduled_task_update_spec') {
+    const task = await executeScheduledTaskUpdateSpecTool(toolArgs, services);
+    return { kind: 'scheduled_task', task, updated: true };
+  }
   if (name === 'schedule_create_item') {
     const result = await executeScheduleCreateItemTool(toolArgs, services);
     return { kind: 'schedule_item', ...result };