feat(tender-details): add documents section and enhance document handling

- Introduced a new documents section in the tender details page for better organization of related documents.
- Updated the API service to support downloading individual and bulk documents.
- Enhanced the TenderDetailsContent component to manage document data and loading states effectively.
- Refactored tender navigation items to include the new documents section.
- Improved type definitions for better clarity and type safety in document handling.

src/lib/api/services/tenders-service.ts

@@ -60,4 +60,17 @@ export const tendersService = {
       throw error;
     }
   },
+
+  /** Single file — backend expects `filename` matching the list entry. */
+  downloadTenderDocument: (tenderId: string, filename: string) =>
+    api.get<Blob>(API_ENDPOINTS.TENDERS.DOCUMENTS_DOWNLOAD(tenderId), {
+      params: { filename },
+      responseType: "blob",
+    }),
+
+  /** Optional bulk archive when the API returns a zip without extra params. */
+  downloadTenderDocumentsArchive: (tenderId: string) =>
+    api.get<Blob>(API_ENDPOINTS.TENDERS.DOCUMENTS_DOWNLOAD(tenderId), {
+      responseType: "blob",
+    }),
 };

src/lib/api/types/Tenders.ts

@@ -32,7 +32,7 @@ export const TenderDocumentsResponseSchema = z.object({
   size: z.number(),
   last_modified: z.number(),
   document_type: z.string(),
-})
+});
 export const TenderTranslationResponseSchema = z.object({
   notice_id: z.string(),
   language: z.string(),