dsh-effort-bars: DeepSeek Harness Plugin for Quick Reasoning Depth Switching

The DeepSeek Harness (DSH) reasoning-depth plugin `dsh-effort-bars` replaces cumbersome menu operations with visual signal bars, enabling instant access to reasoning-depth levels (Off/Medium/High/Max). Positioned next to the model button, it allows direct switching by clicking any bar, while also optimizing the model menu into a searchable list. It supports keyboard navigation, multilingual support, and accessibility, and appears only when the current model supports reasoning levels. Easy to install, it is a practical tool for improving DeepSeek development efficiency.