feat(ui): добавить Trade-In / Концепция / Админ в landing nav (#438)

frontend/src/app/page.tsx

@@ -157,11 +157,17 @@ export default function HomePage() {
           zIndex: 100,
         }}
       >
-        <span
-          style={{ fontWeight: 700, fontSize: 17, color: "var(--fg-primary)" }}
+        <a
+          href="/"
+          style={{
+            fontWeight: 700,
+            fontSize: 17,
+            color: "var(--fg-primary)",
+            textDecoration: "none",
+          }}
         >
           GenDesign
-        </span>
+        </a>
         <div style={{ display: "flex", gap: 24, alignItems: "center" }}>
           <a
             href="/analytics"
@@ -183,6 +189,36 @@ export default function HomePage() {
           >
             Site Finder
           </a>
+          <a
+            href="/trade-in/"
+            style={{
+              fontSize: 14,
+              color: "var(--fg-secondary)",
+              textDecoration: "none",
+            }}
+          >
+            Trade-In
+          </a>
+          <a
+            href="/concept"
+            style={{
+              fontSize: 14,
+              color: "var(--fg-secondary)",
+              textDecoration: "none",
+            }}
+          >
+            Концепция
+          </a>
+          <a
+            href="/admin/scrape/all"
+            style={{
+              fontSize: 14,
+              color: "var(--fg-secondary)",
+              textDecoration: "none",
+            }}
+          >
+            Админ
+          </a>
           <button
             onClick={() => setModalOpen(true)}
             style={{