refactor: offload authentication route resolution to client and improve redirect logic in landing pages

src/app/[lang]/page.tsx

@@ -7,10 +7,6 @@ import {
   isAuthenticatedToken,
   MARRIAGE_ENTRY_PATH_COOKIE,
 } from "@/lib/entry-route-cache";
-import {
-  getSubmitPath,
-  hasCompletedMarriageProfileBasics,
-} from "@/lib/get-submit-path";
 import { localizePath } from "@/translations/config";
 
 export const dynamic = "force-dynamic";
@@ -34,38 +30,12 @@ export default async function LocaleEntryPage({
     redirect(localizePath(cachedEntryPath, lang));
   }
 
-  // 1. If not authenticated, render <Intro /> instantly on the server (0ms client delay)
+  // 1. If not authenticated, render <Intro /> instantly in SSR (0ms client delay)
   if (!hasToken) {
     return <Intro />;
   }
 
-  // 2. If authenticated without cached route, resolve target route directly on the server
-  let targetPath: string | null = null;
-  const apiBaseUrl = process.env.NEXT_PUBLIC_API_BASE_URL;
-  if (apiBaseUrl) {
-    try {
-      const res = await fetch(`${apiBaseUrl}/api/marriage/profile/main/`, {
-        headers: {
-          Authorization: `Token ${token}`,
-          Accept: "application/json",
-        },
-        cache: "no-store",
-      });
-      if (res.ok) {
-        const profile = await res.json();
-        targetPath = hasCompletedMarriageProfileBasics(profile)
-          ? getSubmitPath(profile)
-          : "/intro";
-      }
-    } catch {
-      // Graceful fallback to client-side resolver if server fetch fails
-    }
-  }
-
-  if (targetPath) {
-    redirect(localizePath(targetPath, lang));
-  }
-
+  // 2. If authenticated without cached route, deliver head/web_ready immediately and resolve in client
   return (
     <>
       <EntryRouteResolver anonymousEntryVisible={false} />

src/app/page.tsx

@@ -2,6 +2,7 @@ import { cookies, headers } from "next/headers";
 import { redirect } from "next/navigation";
 import {
   getAuthenticatedCachedEntryPath,
+  isAuthenticatedToken,
   MARRIAGE_ENTRY_PATH_COOKIE,
 } from "@/lib/entry-route-cache";
 import {
@@ -36,14 +37,20 @@ export default async function RootPage() {
   const token =
     cookieStore.get("HABIB_TOKEN")?.value ??
     cookieStore.get("habib_token")?.value;
+  const hasToken = isAuthenticatedToken(token);
+
+  if (!hasToken) {
+    redirect(`/${targetLocale}`);
+  }
+
   const cachedEntryPath = getAuthenticatedCachedEntryPath(
     token,
     cookieStore.get(MARRIAGE_ENTRY_PATH_COOKIE)?.value,
   );
 
-  redirect(
-    cachedEntryPath
-      ? localizePath(cachedEntryPath, targetLocale)
-      : `/${targetLocale}`,
-  );
+  if (cachedEntryPath) {
+    redirect(localizePath(cachedEntryPath, targetLocale));
+  }
+
+  redirect(`/${targetLocale}`);
 }