Public demo and visual identity release.\n\nHighlights:\n- Added a reproducible walkthrough backed by eight fictional Demo records.\n- Added real desktop, detail, search, and narrow-screen browser screenshots.\n- Added a before/after catalog illustration and compact project logo.\n- Added complete English documentation, Roadmap, reviewed PR workflow, and starter issues.\n\nThe application API contract remains 2.5.0. This release adds public demonstration and community assets without changing the local protocol.\n\nThe project remains local-first: it does not download, redistribute, install, or execute MOD files.