feat(tender-details): normalize tender documents extraction logic

- Added a new function to handle varying document payload structures from the backend, ensuring consistent extraction of tender documents.
- Updated the TenderDetails component to utilize the new extraction logic, improving reliability in document handling.
- Refactored related imports and removed unused code for better clarity and maintainability.

src/app/tenders/[details]/components/tender-details-content.tsx

@@ -2,10 +2,10 @@ import type {
   TTenderDetails,
   TTenderDocumentsResponse,
 } from "@/lib/api/types/Tenders";
-import { shouldShowLocationSection } from "../tender-nav-utils";
-import type { TenderNavItem } from "../types";
 import { scrollToTenderSection } from "../scroll-to-section";
 import { shouldShowLotsSection } from "../tender-display-utils";
+import { shouldShowLocationSection } from "../tender-nav-utils";
+import type { TenderNavItem } from "../types";
 import { TenderAiSummarySection } from "./tender-ai-summary-section";
 import { TenderDescriptionSection } from "./tender-description-section";
 import { TenderDocumentsSection } from "./tender-documents-section";

src/app/tenders/[details]/page.tsx

@@ -8,7 +8,10 @@ import {
   useTenderDetailQuery,
   useTranslateTenderMutation,
 } from "@/hooks/queries";
-import type { TTenderDetails } from "@/lib/api/types/Tenders";
+import type {
+  TTenderDetails,
+  TTenderDocumentsResponse,
+} from "@/lib/api/types/Tenders";
 import { usePathname, useRouter, useSearchParams } from "next/navigation";
 import { use, useCallback, useEffect, useMemo, useRef } from "react";
 import { TenderDetailsContent } from "./components/tender-details-content";
@@ -16,7 +19,6 @@ import { TenderDetailsError } from "./components/tender-details-error";
 import { TenderDetailsHeader } from "./components/tender-details-header";
 import { useTenderSectionScrollSpy } from "./hooks/use-tender-section-scroll-spy";
 import { getTenderNavItems } from "./tender-nav-utils";
-import { shouldShowAiSummarySection } from "./tender-display-utils";
 
 interface IProps {
   params: Promise<{
@@ -24,6 +26,33 @@ interface IProps {
   }>;
 }
 
+// Backend has shipped the documents payload as a bare array, an `ApiResponse`
+// wrapper, and a `{ data: { documents: [...] } }` wrapper at different times.
+// Normalize so a real list is never dropped because of a wrapper mismatch.
+function extractTenderDocuments(
+  payload: unknown,
+): TTenderDocumentsResponse[] {
+  if (!payload) return [];
+  if (Array.isArray(payload)) return payload as TTenderDocumentsResponse[];
+
+  const wrapper = payload as {
+    data?: unknown;
+    documents?: unknown;
+  };
+
+  if (Array.isArray(wrapper.documents)) {
+    return wrapper.documents as TTenderDocumentsResponse[];
+  }
+  if (Array.isArray(wrapper.data)) {
+    return wrapper.data as TTenderDocumentsResponse[];
+  }
+  if (wrapper.data && typeof wrapper.data === "object") {
+    const inner = (wrapper.data as { documents?: unknown }).documents;
+    if (Array.isArray(inner)) return inner as TTenderDocumentsResponse[];
+  }
+  return [];
+}
+
 const TenderDetails = ({ params }: IProps) => {
   const { details } = use(params);
   const router = useRouter();
@@ -44,14 +73,12 @@ const TenderDetails = ({ params }: IProps) => {
   ];
 
   const tenderForNav = data?.data;
-  const hasValidAiSummary = tenderForNav
-    ? shouldShowAiSummarySection(tenderForNav)
-    : false;
   const { data: documentsResponse, isPending: isDocumentsLoading } =
-    useGetTenderDocumentsQuery(details, { enabled: hasValidAiSummary });
-  const documents = documentsResponse?.data ?? [];
+    useGetTenderDocumentsQuery(details, { enabled: Boolean(tenderForNav) });
+  const documents = extractTenderDocuments(documentsResponse);
+
   const showDocumentsSection =
-    hasValidAiSummary && (isDocumentsLoading || documents.length > 0);
+    Boolean(tenderForNav) && !isDocumentsLoading && documents.length > 0;
 
   const tenderNavItems = useMemo(
     () =>