feat: add new pages and layout components for improved navigation and structure

- Added AppLayout component to standardize page layout with breadcrumb support.
- Introduced AppSidebar for navigation with user-specific links and admin options.
- Created new pages: SoundsPage, PlaylistsPage, ExtractionsPage, UsersPage, and SettingsPage.
- Removed obsolete SocketStatus component and replaced it with SocketBadge for connection status.
- Updated DashboardPage to utilize the new layout and sidebar components.
- Added NavGroup and NavItem components for better organization of sidebar navigation.
- Included SocketBadge to display real-time connection status.
- Updated package.json to include vitest and coverage-v8 for testing and coverage reporting.

src/components/nav/UserNav.tsx

@@ -0,0 +1,81 @@
+import { ChevronsUpDown, LogOut, UserIcon } from 'lucide-react'
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuGroup,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu'
+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
+import { SidebarMenu, SidebarMenuButton, SidebarMenuItem, useSidebar } from '../ui/sidebar'
+import type { User } from '@/types/auth'
+import { Link } from 'react-router'
+
+interface UserNavProps {
+  user: User
+  logout: () => void
+}
+
+export function UserNav({ user, logout }: UserNavProps) {
+  const { isMobile } = useSidebar()
+
+  return (
+    <SidebarMenu>
+      <SidebarMenuItem>
+        <DropdownMenu>
+          <DropdownMenuTrigger asChild>
+            <SidebarMenuButton
+              size="lg"
+              className="data-[state=open]:bg-sidebar-accent data-[state=open]:text-sidebar-accent-foreground"
+            >
+              <Avatar className="h-8 w-8 rounded-lg">
+                <AvatarImage src={user.picture ?? ''} alt={user.name ?? ''} />
+                <AvatarFallback className="rounded-lg">SB</AvatarFallback>
+              </Avatar>
+              <div className="grid flex-1 text-left text-sm leading-tight">
+                <span className="truncate font-semibold">{user.name}</span>
+                <span className="truncate text-xs">{user.email}</span>
+              </div>
+              <ChevronsUpDown className="ml-auto size-4" />
+            </SidebarMenuButton>
+          </DropdownMenuTrigger>
+          <DropdownMenuContent
+            className="w-[--radix-dropdown-menu-trigger-width] min-w-56 rounded-lg"
+            side={isMobile ? 'bottom' : 'right'}
+            align="end"
+            sideOffset={4}
+          >
+            <DropdownMenuLabel className="p-0 font-normal">
+              <div className="flex items-center gap-2 px-1 py-1.5 text-left text-sm">
+                <Avatar className="h-8 w-8 rounded-lg">
+                  <AvatarImage src={user.picture ?? ''} alt={user.name ?? ''} />
+                  <AvatarFallback className="rounded-lg">SB</AvatarFallback>
+                </Avatar>
+                <div className="grid flex-1 text-left text-sm leading-tight">
+                  <span className="truncate font-semibold">{user.name}</span>
+                  <span className="truncate text-xs">{user.email}</span>
+                </div>
+              </div>
+            </DropdownMenuLabel>
+            <DropdownMenuSeparator />
+            <DropdownMenuGroup>
+              <DropdownMenuItem asChild>
+                <Link to="/account">
+                  <UserIcon />
+                  Account
+                </Link>
+              </DropdownMenuItem>
+            </DropdownMenuGroup>
+            <DropdownMenuSeparator />
+            <DropdownMenuItem onClick={logout}>
+              <LogOut />
+              Log out
+            </DropdownMenuItem>
+          </DropdownMenuContent>
+        </DropdownMenu>
+      </SidebarMenuItem>
+    </SidebarMenu>
+  )
+}