DeepSeek Harness Plugin: Codex-Style Reasoning Level Slider

The official reasoning level options in DSH Harness (DSH) are fixed tiers; this plugin, `dsh-codex-effort-slider`, replaces them with a Codex-style continuous slider for more intuitive visual feedback. It is maintained by Microqian2th and licensed under the MIT license. Core features include support for Max/High/Low/Off, a blue-purple gradient, stardust effects at higher levels, light and dark theme compatibility, no runtime dependencies, and non-invasive behavior. The plugin supports only the DSH Desktop profile and requires a complete software restart after installation to take effect. It locates the DOM through official semantic attributes; if the official structure changes, it may stop working, but it includes a fail-open mechanism.