Synchronize TickTick (Dida) and Google Tasks bidirectionally, including list/project mapping, task content sync, completion sync, and smart-list export (Today, Next 7 Days, All). Use when users ask to set up OAuth, run or schedule sync, fix mismatched/deleted/completed tasks, or troubleshoot Google Calendar duplicate behavior caused by due-date handling.

双向同步 TickTick（滴答清单）和 Google 任务，包括列表/项目映射、任务内容同步、完成状态同步以及智能列表导出（今天、未来七天、全部）。当用户要求设置 OAuth、运行或计划同步、修复不匹配/已删除/已完成的任务，或排查因截止日期处理导致的 Google 日历重复行为时使用。