wiki: sync from docs/wiki
wiki: redesign — grouped navigation, command pages, verification guide - Home rebuilt around a hero, a where-to-go table and the unproven-claims note - new pages: Quick start, Recipes, Scripting, Sharing, Configuration, Troubleshooting, Development, Verifying claims - command pages rewritten from the real --help output, one shape each - emoji headings, shields.io badges and GitHub alert callouts throughout - sync instructions and a style guide on the Documentation page