dsh-agent-plugin-market: Managing DSH Agent Skills and Hooks with Git Repositories

`dsh-agent-plugin-market` is a DSH plugin (MIT licensed) maintained by Diluka, designed to centrally manage Codex/Claude skills, plugins, and optional Hooks loaded from Git repositories. The plugin treats Git repositories as content markets, automatically discovering available resources by cloning the repository and identifying standard manifest files (such as `marketplace.json` and `plugin.json`). Core features include: supporting global default configuration with workspace-level sparse overrides, allowing independent enabling or disabling of specific plugins and standalone skills across different workspaces; enabling in-place plugin loading without copying files; providing agent tools such as `agent_market_info` for AI to query status or write workspace overrides, while restricting its execution scope to the global level.