portal(settings): embed authed SettingsSubmit form in Add tab; switcher remembers last data tab

app/api/me/route.ts

@@ -0,0 +1,16 @@
+// app/api/me/route.ts
+import { NextResponse } from "next/server";
+
+export async function GET(req: Request) {
+    const cookie = req.headers.get("cookie") || "";
+    const base = process.env.NEXT_PUBLIC_API_BASE_URL!;
+    const url  = `${base}/users/me?fields=id,display_name,first_name,last_name,email`;
+
+    const res  = await fetch(url, { headers: { cookie }, cache: "no-store" });
+    const body = await res.json().catch(() => ({}));
+
+    return new NextResponse(JSON.stringify(body), {
+        status: res.status,
+        headers: { "content-type": "application/json" },
+    });
+}