🐛 修复定时任务执行耗时显示为0的问题

- 启动监控线程等待所有任务完成后再更新日志
- 通过参数传递避免闭包问题
- 耗时现在正确反映实际任务执行时间

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app.py

@@ -2995,6 +2995,7 @@ def scheduled_task_worker():
 
                 started_count = 0
                 skipped_count = 0
+                task_threads = []  # 收集所有启动的任务线程
 
                 for account_id in account_ids:
                     if user_id not in user_accounts:
@@ -3019,6 +3020,7 @@ def scheduled_task_worker():
                     )
                     thread.start()
                     active_tasks[account_id] = thread
+                    task_threads.append(thread)
                     started_count += 1
 
                     socketio.emit('account_update', account.to_dict(), room=f'user_{user_id}')
@@ -3026,18 +3028,40 @@ def scheduled_task_worker():
                 # 更新最后执行时间
                 database.update_schedule_last_run(schedule_id)
 
-                # 更新执行日志
-                execution_duration = int(time_mod.time() - execution_start_time)
+                print(f"[用户定时任务] 已启动 {started_count} 个账号，跳过 {skipped_count} 个账号")
+
+                # 启动监控线程，等待所有任务完成后更新日志
+                def wait_and_update_log(threads, start_time, lid, total, success, sid):
+                    for t in threads:
+                        t.join()  # 等待每个任务完成
+                    execution_duration = int(time_mod.time() - start_time)
                     database.update_schedule_execution_log(
-                    log_id,
-                    total_accounts=len(account_ids),
-                    success_accounts=started_count,
-                    failed_accounts=len(account_ids) - started_count,
+                        lid,
+                        total_accounts=total,
+                        success_accounts=success,
+                        failed_accounts=total - success,
                         duration_seconds=execution_duration,
                         status='completed'
                     )
+                    print(f"[用户定时任务] 任务#{sid}执行完成，耗时{execution_duration}秒")
 
-                print(f"[用户定时任务] 已启动 {started_count} 个账号，跳过 {skipped_count} 个账号")
+                if task_threads:
+                    monitor_thread = threading.Thread(
+                        target=wait_and_update_log,
+                        args=(task_threads, execution_start_time, log_id, len(account_ids), started_count, schedule_id),
+                        daemon=True
+                    )
+                    monitor_thread.start()
+                else:
+                    # 没有启动任何任务，直接更新日志
+                    database.update_schedule_execution_log(
+                        log_id,
+                        total_accounts=len(account_ids),
+                        success_accounts=0,
+                        failed_accounts=len(account_ids),
+                        duration_seconds=0,
+                        status='completed'
+                    )
                 if started_count == 0 and len(account_ids) > 0:
                     print(f"[用户定时任务] ⚠️ 警告：所有账号都被跳过了！请检查user_accounts状态")