docs(wiki): publish the MD.Scribe 3.4.3 guide Twelve pages plus sidebar and footer: getting started, installation (layouts, web-server snippets, permissions, verified hosts), configuration generated from config/defaults.php, Markdown features, search and tags, admin guide, HTTP API, updates, troubleshooting, development and changelog. Facts come from the code and from a live installation on PHP 8.5.12: the config keys and defaults are read out of config/defaults.php, the API surfaces from docs/http-api.md and routes, the test count and checker baseline from an actual run.