v0.6.2

新增可选的「回中优化」策略，目前因实测效果不理想已隐藏。长距离跳转时可先回到画布中心再继续绘制，以提升稳定性，并在部分图案中小幅缩短绘制时间。生成结果会显示回中次数、省时估算和触发阈值。

优化换色、色槽选择、画笔选择和菜单操作的按键时序，使用更保守的按键保持与等待间隔，降低漏按、串键、选错色槽的概率。代价是换色和调色阶段耗时会有所增加。

修复固件刷写前串口释放不完整的问题，减少端口 busy、需要重启应用或重新插拔设备的情况。

改进固件刷写工具链检测、修复提示和刷写页面体验，并补充英文与国际化界面支持。

提升 Switch 蓝牙连接与绘制流程稳定性：优化 Classic Bluetooth HID 在连接、认证、mode-change 和拥塞状态下的输入报告发送节奏，减少连接后断联、send_report reason=8 和 report=48 发送失败的情况。

• Added an optional Recenter Optimization strategy, currently hidden because the real-world effect is not ideal. For long-distance jumps, the drawing flow can return to the canvas center before continuing, improving stability and slightly reducing drawing time for some patterns. Generated results include the recenter count, estimated time saved, and trigger threshold.

• Optimized button timing for color changes, palette-slot selection, brush selection, and menu operations. The flow now uses more conservative button holds and wait intervals to reduce missed inputs, accidental chained inputs, and incorrect palette-slot selection. The tradeoff is that color switching and palette setup may take longer.

• Fixed incomplete serial-port release before firmware flashing, reducing cases where the port becomes busy and requires restarting the app or reconnecting the device.

• Improved firmware flashing toolchain detection, recovery guidance, and the flashing page experience, with added English and internationalized UI support.

• Improved Switch Bluetooth connection and drawing stability by tuning Classic Bluetooth HID report timing during connection, authentication, mode changes, and congestion. This reduces post-connection disconnects and failures such as send_report reason=8 and report=48.