dsh-creative-director: DeepSeek Harness Creative Director Agent Plugin

dsh-creative-director is a DeepSeek Harness workflow plugin designed to transform ambiguous requirements into professional creative briefs. The plugin uses `cd_assess` to identify the domain, adaptively ask follow-up questions, and generate a structured Brief JSON that includes a common core along with domain-specific dimensions (such as hooks and world-building). It then uses the `cd_render` tool to render the result into a usable imagePrompt or videoPrompt. Built on a “core framework + domain profile” architecture, the plugin supports four domains, including short video and brand visuals, and features conflict detection and extensibility to address the gap in professional output.