Add a Claude Code Plugin page; Roadmap for 0.1.21 (plugin), 0.1.22 (security), 0.1.23 (multi-instance), 0.1.24 (Fleet Management API) - Claude-Code-Plugin: the contents of README.plugin.md, with repository links made absolute and wiki pages linked directly. Linked from the sidebar, Home (Start here, Packages, reference documents), Installation and Connecting Claude. - Roadmap: four releases; 0.1.21 is the plugin directory work (#14-#16 merged; Windows testing, housekeeping and the release still to do), the security fixes move to 0.1.22, multi-instance to 0.1.23 and the Fleet Management API to 0.1.24, with milestone links to match. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>