dsh-librarian: A Dynamic Capability Accumulation Plugin for DeepSeek Harness

`dsh-librarian` is a plugin for DeepSeek Harness (DSH) that aims to address the issue of stable task capabilities being lost after a conversation ends. It provides dynamic capability consolidation and tiered management, and manages plugins through a Pixel-style Web UI. When developers use DSH as usual, the plugin automatically detects and saves reusable capabilities; by default, these capabilities are session-level and must be validated before they can be promoted to user level. The tool supports cold loading and cross-session reuse, helping developers efficiently manage and reuse DSH plugin capabilities.