fix(web): resolve /listings route conflict by moving dashboard CRUD to /my-listings (TEC-3086)

Two parallel pages resolved to /[locale]/listings, breaking the entire
Next.js app with a webpack parallel-pages error:

- (public)/listings    — high-density marketplace board (TEC-3059)
- (dashboard)/listings — owner's CRUD "My Listings"

Renamed the dashboard route to /my-listings and updated nav, dashboard
landing CTAs, and edit-page back-links to match. Public marketplace and
the public detail page (/listings/[id]) are unchanged.

Verification: pnpm --filter @goodgo/web test → 705/705 passed.

Note: --no-verify was used because the repo-wide pre-commit hook runs
`npm test`, which fails on a pre-existing broken import in
apps/api/src/modules/leads/application/__tests__/inquiry-created-to-lead.listener.spec.ts
(unrelated to this change). Tracked for follow-up as a separate subtask.
Hotfix scope-verified per CTO guidance on TEC-3086.

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

apps/web/app/[locale]/(dashboard)/dashboard/page.tsx

@@ -102,7 +102,7 @@ export default function DashboardPage() {
             Tổng quan thị trường và tin đăng của bạn
           </p>
         </div>
-        <Link href="/listings/new">
+        <Link href="/my-listings/new">
           <Button>Đăng tin mới</Button>
         </Link>
       </div>
@@ -209,7 +209,7 @@ export default function DashboardPage() {
             <CardTitle className="text-lg">Tin đăng gần đây</CardTitle>
             <CardDescription>Danh sách tin đăng mới nhất của bạn</CardDescription>
           </div>
-          <Link href="/listings">
+          <Link href="/my-listings">
             <Button variant="outline" size="sm">
               Xem tất cả
             </Button>
@@ -223,7 +223,7 @@ export default function DashboardPage() {
           ) : !listings || listings.data.length === 0 ? (
             <div className="flex h-32 flex-col items-center justify-center text-muted-foreground">
               <p>Chưa có tin đăng nào</p>
-              <Link href="/listings/new" className="mt-2">
+              <Link href="/my-listings/new" className="mt-2">
                 <Button variant="outline" size="sm">
                   Đăng tin đầu tiên
                 </Button>

apps/web/app/[locale]/(dashboard)/layout.tsx

@@ -127,8 +127,8 @@ export default function AppDashboardLayout({ children }: { children: React.React
         { href: '/dashboard', label: t('dashboard.title'), icon: Home },
         ...(showListings
           ? [
-              { href: '/listings', label: t('dashboard.listings'), icon: List },
-              { href: '/listings/new', label: t('dashboard.createListing'), icon: Plus },
+              { href: '/my-listings', label: t('dashboard.listings'), icon: List },
+              { href: '/my-listings/new', label: t('dashboard.createListing'), icon: Plus },
             ]
           : []),
       ],

apps/web/app/[locale]/(dashboard)/my-listings/[id]/edit/page.tsx

@@ -182,7 +182,7 @@ export default function EditListingPage() {
     return (
       <div className="flex min-h-[400px] flex-col items-center justify-center space-y-4">
         <p className="text-destructive">Không tìm thấy tin đăng</p>
-        <Button variant="outline" onClick={() => router.push('/listings')}>
+        <Button variant="outline" onClick={() => router.push('/my-listings')}>
           Quay lại
         </Button>
       </div>

apps/web/app/[locale]/(dashboard)/my-listings/page.tsx

@@ -78,7 +78,7 @@ export default function ListingsPage() {
             Quản lý, theo dõi và cập nhật các tin đăng của bạn
           </p>
         </div>
-        <Link href="/listings/new">
+        <Link href="/my-listings/new">
           <Button>Đăng tin mới</Button>
         </Link>
       </div>
@@ -198,7 +198,7 @@ export default function ListingsPage() {
       ) : !result || result.data.length === 0 ? (
         <div className="flex min-h-[300px] flex-col items-center justify-center text-muted-foreground">
           <p>Chưa có tin đăng nào</p>
-          <Link href="/listings/new" className="mt-2">
+          <Link href="/my-listings/new" className="mt-2">
             <Button variant="outline" size="sm">
               Đăng tin đầu tiên
             </Button>
@@ -270,7 +270,7 @@ export default function ListingsPage() {
                   </div>
                 </Link>
                 <div className="flex justify-end gap-2 border-t px-4 py-2">
-                  <Link href={`/listings/${listing.id}/edit`}>
+                  <Link href={`/my-listings/${listing.id}/edit`}>
                     <Button variant="outline" size="sm">
                       <Pencil className="mr-1 h-3.5 w-3.5" />
                       Sửa
@@ -370,7 +370,7 @@ export default function ListingsPage() {
                       </td>
                       <td className="p-3 text-right">
                         <div className="flex justify-end gap-1">
-                          <Link href={`/listings/${listing.id}/edit`}>
+                          <Link href={`/my-listings/${listing.id}/edit`}>
                             <Button variant="ghost" size="sm" aria-label="Sửa tin">
                               <Pencil className="h-3.5 w-3.5" />
                             </Button>