feat(listings-frontend): add create/edit form, detail page, and listing components

- Multi-step wizard for listing creation (basic info, location, details, pricing, images)
- Listing detail page with image gallery, property specs, seller/agent info, stats
- Listings index page with filters (transaction type, property type) and pagination
- Edit page with tab-based form (read-only until backend PATCH endpoint available)
- Drag & drop image upload component with preview and multi-file support
- Dashboard layout with navigation bar
- New UI primitives: textarea, select, badge, tabs
- Listings API client with typed endpoints matching backend contract
- Zod validation schemas for all form steps
- Status badges with Vietnamese labels for all listing states
- Responsive design across all pages

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/app/(dashboard)/page.tsx

@@ -0,0 +1,54 @@
+import Link from 'next/link';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+
+export default function HomePage() {
+  return (
+    <div className="space-y-8">
+      <div>
+        <h1 className="text-3xl font-bold">Chào mừng đến GoodGo</h1>
+        <p className="mt-2 text-muted-foreground">
+          Nền tảng bất động sản thông minh tại Việt Nam
+        </p>
+      </div>
+
+      <div className="grid gap-6 sm:grid-cols-2 lg:grid-cols-3">
+        <Card>
+          <CardHeader>
+            <CardTitle>Đăng tin mới</CardTitle>
+            <CardDescription>Tạo tin đăng bán hoặc cho thuê bất động sản</CardDescription>
+          </CardHeader>
+          <CardContent>
+            <Link href="/listings/new">
+              <Button className="w-full">Đăng tin ngay</Button>
+            </Link>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader>
+            <CardTitle>Tin đăng của tôi</CardTitle>
+            <CardDescription>Quản lý các tin đăng đã tạo</CardDescription>
+          </CardHeader>
+          <CardContent>
+            <Link href="/listings">
+              <Button variant="outline" className="w-full">Xem danh sách</Button>
+            </Link>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader>
+            <CardTitle>Tìm kiếm</CardTitle>
+            <CardDescription>Tìm bất động sản phù hợp nhu cầu</CardDescription>
+          </CardHeader>
+          <CardContent>
+            <Link href="/listings">
+              <Button variant="outline" className="w-full">Tìm kiếm</Button>
+            </Link>
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  );
+}