dsh-skill-panel: DeepSeek Harness Skill Panel Plugin

dsh-skill-panel is a Web extension for DeepSeek Harness (DSH), developed by lywusichen, and is released under the MIT license. The plugin aims to address the need to verify which skills are loaded in the current session and locate their local directories while debugging agents. It adds an entry at the bottom of the left sidebar (next to Settings) that, when clicked, opens a dialog listing the skills loaded in the current session. If the host environment supports the `directoryPath` field, a "Open Local Folder" button is provided next to each skill line, which directly invokes the host's default application to open the directory. The plugin integrates automatically via `dsh.bundle.patch` without the need for manual configuration file editing; its core functionality utilizes existing platform interfaces (`s