Release 4.199.0

Every page downloads about 56 KB less: the shared files are served minified. From the owner's notes of 2026-11-10: "Make sure everything loads … non-blocking asynchronously … minified".

• Served minified, cached by content hash (serve.js, new minify.js; OpenVibe.Shared #429). Sites have no build step by choice, so the shared browser files are minified where they are served: terser for JavaScript, clean-css for stylesheets. It runs once per release per file, and the immutable ?v= address does the rest. On 4.197.0's eager set (the bar, the theme, the footer, the kit and the rest) that is 806 KB → 523 KB raw and 189 KB → 133 KB after brotli, about 56 KB less per page view; navbar.js alone is 49.8 KB → 34.4 KB as delivered. A file the minifier cannot handle, or one that would not come out smaller, is served as it is; a minifier error never fails a request. ETag and ?v= immutability are unchanged. Stylesheets are minified at clean-css level 1 only (inside each rule), never level 2, which moves and merges rules and could change which rule wins. New dependencies: terser, clean-css.
• Avatars reserve their box (OpenVibe.Shared #430). The bar's, the footer's, the account switcher's and the user card's pictures carry their width and height and decode asynchronously (the footer's also load lazily, below the fold), so a signed-in page no longer shifts when the picture arrives.
• Checked on production openvibe.chat with every shared file served minified, on a phone and a computer: the bar, the menu, Messages and AI inside it, the Dock; no page errors.