更新内容

• 专注期间检测到分心时，暂停专注倒计时并开始分心正计时。
• 点击“回去工作”后记录本次分心时间，并从剩余专注时间继续计时。
• 新增今日统计：专注/分心总时长、小时分布、专注最多窗口、分心最多窗口和高峰时间段。
• 扩展本地统计数据结构，并兼容旧版今日统计数据。
• 将版本号更新到 0.1.2。

验证

• 通过 TypeScript 类型检查：tsc --noEmit

Windows build from branch kai/windows-and-pomodoro-improvements.

Changes included:

• Windows active-window detection for distraction detection.
• Pomodoro cycles with focus duration, break duration, and pomodoro count settings.
• Add current active app to blocked apps from diagnostics.
• Smaller idle pet window to reduce transparent click-blocking area.

Note: this Windows build is unsigned, so Windows may show a security warning on first run.