dsh-prompt-seed: A DSH Plugin for Expanding Seeds into Executable Prompts

The `dsh-prompt-seed` plugin addresses the crowded “Rewrite My Draft” slot in the DSH ecosystem, which often skews toward trimming, by turning brief instructions into detailed, actionable requests through seed expansion, clarification, and semantic-fidelity gating. It supports bare signals, version management, and visual credentials without requiring build tools. Although it proactively adds content the user did not write to enrich details, it remediates any content judged to be semantically distorted. Installation requires DSH 0.2.0-rc.1 through 0.3.0-0 and Node >= 22.19.