DSH Plugin Gating Hub: Framework Upgrade Security and Plugin Version Gating

DSH Plugin Gating Hub is an upgrade-safety and plugin-management plugin designed for the DSH framework, intended to address version compatibility and supply chain risks. Its core features include one-click upgrades with automatic full-tree rollback, environment fingerprint detection to prevent accidental disabling, strict version gating via a semver engine, and a multi-source plugin marketplace (including private sources). This plugin ensures rapid recovery after failed upgrades, reducing administrators' trial-and-error costs; it must be installed and enabled manually.