guilingzhouyi

⏱ 轻量化工作区时长追踪 — 自动计时、周报图表、跨工作区聚合、崩溃保护；环形缓冲区 + Journal 双写入架构，预留多工作区对比与云端同步扩展 | Lightweight cross-workspace time tracker with RingBuffer+Journal storage, weekly charts, and extensible architecture