DeepSeek Harness Plugin: dsh-gsd-bundle (Reimplementation of Git Ship Done)

The DeepSeek Harness plugin `dsh-gsd-bundle` reimplements Git Ship Done (GSD) as a Cordis plugin, aiming to replace the default agent-loop with a structured GSD Phase Loop to achieve a controlled engineering loop. The plugin includes 28 subplugins, 37 tools, and 34 commands, covering the full workflow from Spec, Discuss, Plan, Execute, and Verify to Ship. Core features include state persistence, checkpoint-resume, intelligent routing, code/UI review and remediation, and MVP definition. The environment requires Node.js >= 20; state is stored in the `.planning/` directory through fuzziness assessment.