dsh-refine: DeepSeek Harness's /refine Operation Layer

dsh-refine is a refinement UX layer plugin in the DeepSeek Harness ecosystem, aiming to provide a stable entry point to view entries, track history, roll back changes, and audit auto-gate decisions. It interacts with the dsh-continual-harness engine via the /refine command and settings panel, providing setup instructions instead of throwing an error if the engine is not mounted. Core features include: 1. The /refine command supports viewing status, filtering the list by type, viewing history, and rolling back specific entries; 2. Free-text instructions can trigger refinement immediately, with results updated asynchronously; 3. The settings panel supports browsing entries, viewing timelines, one-click rollback, and...