Rename Kyoo to Omnyx & add page settings

Rename project branding from "Kyoo" to "Omnyx" across README, index.html, metadata.json, typedoc and various UI components. Add support for page-level settings: pageTitle, favicon (Base64 upload/preview), and customColors (color scheme) — introduced CustomColors type, persisted via API types and converters, and wired into updateSettings/fetchSettings flows. UI: SettingsView adds page settings UI (upload, preview, color pickers) and handlers; App applies pageTitle, favicon and sets CSS variables for customColors; Sidebar and Header now display the configured page title. Also update importer modules and docs to use the new project name in logs/comments.

src/components/Sidebar.tsx

@@ -31,9 +31,10 @@ import { CATEGORY_PATHS } from '@/constants';
 interface SidebarProps {
   enabledCategories: MediaCategory[];
   onToggleCategory: (category: MediaCategory) => void;
+  pageTitle?: string;
 }
 
-export default function Sidebar({ enabledCategories, onToggleCategory }: SidebarProps) {
+export default function Sidebar({ enabledCategories, onToggleCategory, pageTitle }: SidebarProps) {
   const [isMediaExpanded, setIsMediaExpanded] = useState(true);
   const [isMobileOpen, setIsMobileOpen] = useState(false);
   const { theme, setTheme } = useTheme();
@@ -120,7 +121,7 @@ export default function Sidebar({ enabledCategories, onToggleCategory }: Sidebar
             <div className="w-10 h-10 bg-gradient-to-br from-[#6d28d9] to-[#8b5cf6] rounded-xl flex items-center justify-center shadow-lg shadow-[#6d28d9]/30">
               <div className="w-5 h-5 rounded-full bg-white" />
             </div>
-            <span className="text-xl font-black text-foreground">kyoo</span>
+            <span className="text-xl font-black text-foreground">{pageTitle || 'omnyx'}</span>
           </div>
         </div>