DSH Claude Style Reasoning Slider: Give DSH a New Animated Reasoning Level Slider and Model Selector

# Introduction In DSH (DeepSeek Harness), switching models and reasoning intensity relies on the native model selector within the session input area. In practice, there are two issues: first, different vendors have inconsistent naming conventions for levels, requiring users to memorize mappings for terms like `off`, `med`, `extreme`, and `ultracode`; second, custom routers (e.g., OpenRouter) often lack `reasoningEfforts` configurations, leaving the interface without an entry point for adjusting levels. DSH's philosophy is "everything is a plugin," meaning that the model slot in the session input can also be taken over by a plugin. The DSH Claude Style Reasoning Slider introduced in this article does exactly that: