v0.2.0

Added

• Per-session cost (¥): every live row shows a green estimated cost
• Panel drag system: drag the pill or header, position remembered across reloads; may drag past screen edges with a grabbable header strip; pointer capture + 4px threshold
• Long-press position menu (hold 0.6s): back to default, corner presets, custom position, SVG stroke icons
• Y-axis ticks & auto-scaling: value labels + gridlines, 1/2/2.5/5×10ⁿ rounding with hysteresis
• Current-value indicator: dashed leader with a live value pill
• Peak/off-peak pricing mode: priceMode: peak-offpeak switches prices by Beijing time
• TPS readout, account balance (5-min cache), monthly budget bar, historic-session persistence

Changed

• Closing with ✕ no longer resets the position
• Stats view lists every date and month

Fixed

• Idle curves drop to zero; time ticks no longer clipped; fractional ticks keep one decimal; stats refresh immediately; gesture conflicts; preset corner offset; drag-back handle; single-click open

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新增

• 会话花费显示：实时视图每个会话行显示绿色 ¥ 估算花费
• 面板拖拽系统：位置跨刷新记忆、可拖出屏幕边缘但保留可抓取的头部栏、指针捕获 + 4px 阈值
• 长按位置菜单（按住 0.6 秒）：回到默认位置、四角预设、自定义位置、SVG 描边图标
• Y 轴坐标与自动缩放：刻度 + 网格线，1/2/2.5/5×10ⁿ 取整 + 滞回
• 当前值指示线：虚线引导线与实时数值胶囊
• 峰谷计价模式、TPS 显示、账户余额（5 分钟缓存）、月预算进度条、历史会话持久化

变更

• 点「✕」收起面板不再重置位置
• 统计视图「按日/按月」显示全部日期与月份

修复

• 曲线空闲归零、时间刻度不再裁切、小数刻度保留一位、统计切换即时刷新、手势冲突、预设角落偏上、拖出屏幕后可抓回、单点打开面板