chore: upgrade i18next 26, prettier 3, fontsource-variable, domhandler 6, lint-staged 17

- i18next 23->26 + react-i18next 15->17
- prettier 2->3, reformat all files
- replace @fontsource/inter with @fontsource-variable/inter 5, update import path
- domhandler 5->6 (aligns with transitive deps)
- lint-staged 16->17

src/app/components/sidebar/SidebarItem.tsx

@@ -10,7 +10,7 @@ export const SidebarItem = as<'div', css.SidebarItemVariants>(
       {...props}
       ref={ref}
     />
-  )
+  ),
 );
 
 export const SidebarItemBadge = as<'div', css.SidebarItemBadgeVariants>(
@@ -20,7 +20,7 @@ export const SidebarItemBadge = as<'div', css.SidebarItemBadgeVariants>(
       {...props}
       ref={ref}
     />
-  )
+  ),
 );
 
 export function SidebarItemTooltip({
@@ -57,7 +57,7 @@ export const SidebarAvatar = as<'div', css.SidebarAvatarVariants & ComponentProp
       {...props}
       ref={ref}
     />
-  )
+  ),
 );
 
 export const SidebarFolder = as<'div', css.SidebarFolderVariants>(
@@ -67,7 +67,7 @@ export const SidebarFolder = as<'div', css.SidebarFolderVariants>(
       {...props}
       ref={ref}
     />
-  )
+  ),
 );
 
 export const SidebarFolderDropTarget = as<'div', css.SidebarFolderDropTargetVariants>(
@@ -77,5 +77,5 @@ export const SidebarFolderDropTarget = as<'div', css.SidebarFolderDropTargetVari
       {...props}
       ref={ref}
     />
-  )
+  ),
 );

src/app/components/sidebar/SidebarStack.tsx

@@ -6,5 +6,5 @@ import * as css from './Sidebar.css';
 export const SidebarStack = as<'div'>(
   ({ as: AsSidebarStack = 'div', className, ...props }, ref) => (
     <AsSidebarStack className={classNames(css.SidebarStack, className)} {...props} ref={ref} />
-  )
+  ),
 );