docs(wiki): reorganise into user (multi-locale) + developer (English) split - Split every topic into User- and Dev- prefixed pages - User wiki translated into 7 locales (en, de, fr, it, es, pt, da) matching the 11 implemented country APIs - Dev wiki in English, 19 pages covering architecture, code patterns, quality, deep dives (OBD2, fuzzy predictions, i18n), and workflow - Home.md is now a locale picker + dev entry - _Sidebar.md grouped by locale and dev section - Removed 12 legacy mixed-style pages (User-Guide, Features, FAQ, Getting-Started, Architecture, CI-CD, Contributing, Testing, Localization, Security, Reporting-Issues, Adding-a-Country) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>