dsh-malko-prefs: Preference Configuration and Enhancement Tools for DeepSeek Harness

`dsh-malko-prefs` is a plugin for DeepSeek Harness (DSH), designed to improve the user experience by enhancing configuration and monitoring features. It allows users to customize compaction engine parameters (such as thresholds, retention policies, and reasoning levels) and provides the `/force-compact` command for manual compaction control. Additionally, the plugin can read metadata from the llama.cpp server to automatically populate model information, and offers real-time session status feedback via tab colors and browser notifications. This plugin overrides the built-in presets to use custom compaction and requires DSH version >= 0.1.7-rc.1.