dsh-capability-panel: DeepSeek Harness Skills and MCP Capability Panel

`dsh-capability-panel` is a DeepSeek Harness plugin that visualizes the actual loaded state of agent capabilities. It displays real-time counts and descriptions for skills, MCP servers, and tools, supports session-level capability toggling and intercepted call statistics, and allows presets to define default capabilities. The plugin makes no external calls and processes data locally, helping users debug context management issues and control permissions. Installation requires DSH ≥ 0.1.2-alpha.4 and the web profile.