When the user sends a screenshot via Telegram, parse it using Gemini (fast, default) with automatic Claude fallback when confidence is low. Saves results to Google Calendar (events) or Google Tasks (reminders and tasks). Saves silently if confidence is high; asks for confirmation if uncertain.

当用户通过 Telegram 发送截图时，优先使用 Gemini（快速，默认）进行解析，若置信度低则自动切换为 Claude。解析结果将保存至 Google 日历（事件）或 Google 任务（提醒和任务）。置信度高时静默保存，不确定时会请求用户确认。