feat: add UI component files and navigation structure

Added various UI components and navigation elements including:
- Section cards and selection components
- Social icon SVGs with horizontal/vertical text variants
- Table, tabs, and toggle components
- Site header and sidebar components
- Tooltip and unauthorized page
- Project configuration files (tsconfig.json)
- Route handlers for health checks
- Utility and hook functions for mobile responsiveness

components/nav-user.tsx

@@ -0,0 +1,91 @@
+"use client"
+
+import { IconCreditCard, IconDotsVertical, IconLogout, IconNotification, IconUserCircle } from "@tabler/icons-react"
+
+import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuGroup,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu"
+import { SidebarMenu, SidebarMenuButton, SidebarMenuItem, useSidebar } from "@/components/ui/sidebar"
+
+export function NavUser({
+  user,
+}: {
+  user: {
+    name: string
+    email: string
+    avatar: string
+  }
+}) {
+  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 grayscale">
+                <AvatarImage src={user.avatar} alt={user.name} />
+                <AvatarFallback className="rounded-lg">CN</AvatarFallback>
+              </Avatar>
+              <div className="grid flex-1 text-left text-sm leading-tight">
+                <span className="truncate font-medium">{user.name}</span>
+                <span className="text-muted-foreground truncate text-xs">{user.email}</span>
+              </div>
+              <IconDotsVertical 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.avatar} alt={user.name} />
+                  <AvatarFallback className="rounded-lg">CN</AvatarFallback>
+                </Avatar>
+                <div className="grid flex-1 text-left text-sm leading-tight">
+                  <span className="truncate font-medium">{user.name}</span>
+                  <span className="text-muted-foreground truncate text-xs">{user.email}</span>
+                </div>
+              </div>
+            </DropdownMenuLabel>
+            <DropdownMenuSeparator />
+            <DropdownMenuGroup>
+              <DropdownMenuItem>
+                <IconUserCircle />
+                Account
+              </DropdownMenuItem>
+              <DropdownMenuItem>
+                <IconCreditCard />
+                Billing
+              </DropdownMenuItem>
+              <DropdownMenuItem>
+                <IconNotification />
+                Notifications
+              </DropdownMenuItem>
+            </DropdownMenuGroup>
+            <DropdownMenuSeparator />
+            <DropdownMenuItem>
+              <IconLogout />
+              Log out
+            </DropdownMenuItem>
+          </DropdownMenuContent>
+        </DropdownMenu>
+      </SidebarMenuItem>
+    </SidebarMenu>
+  )
+}