Adds a bilingual reference explaining how plugins are installed and composed
(bundles, patches, profiles, the Loader), how they are injected and activated
(Cordis inject/provide, fiber PENDING), and a dependency-derived split of the
shipped base bundle into system-required and freely optional plugins. Links the
plugin-inventory README to it and excludes the desktop build output from the
translation-pairing corpus scan.
Co-Authored-By: Claude <noreply@anthropic.com>