Update YouTube docs, refresh themes, add YouTube page
Add complete CyberFeeds wiki Comprehensive documentation covering all features: - Home (navigation hub) - Feed Management (subscribe, discover, OPML, Reddit) - Article Management (reading, star, trash, layouts) - Notifications (smart alerts, batching, snooze) - Settings (all configurable options) - Keyboard Shortcuts (complete reference) - Installation & Setup (install, build, auto-start) - FAQ (troubleshooting)
Initial Home page