dsh-skills-anywhere: Unified Management of Agent Skills

`dsh-skills-anywhere` is a DeepSeek Harness plugin designed to address the fragmentation of Agent Skills. It supports collecting skills from local directories and Git sources, and loading them uniformly via `dsh` or an MCP server. The plugin provides skill deduplication, resource validation, diagnostic feedback, and frontend remediation features. Developers can use the CLI to discover, list, and inspect skills, as well as add skill sets from Git, making it suitable for scenarios that require validating skills in CI environments or managing them centrally.