Fix 401 error: Add authenticated API proxy for private datasets

src/app/[org]/[dataset]/[episode]/fetch-data.ts

@@ -242,7 +242,7 @@ async function getEpisodeDataV2(
     try {
       const tasksUrl = buildVersionedUrl(repoId, version, "meta/tasks.jsonl");
       // Use proxy for authenticated requests
-      const proxyUrl = buildProxyUrl(tasksUrl);
+      const proxyUrl = await buildProxyUrl(tasksUrl);
       const tasksResponse = await fetch(proxyUrl);
       
       if (tasksResponse.ok) {

src/app/explore/page.tsx

@@ -74,7 +74,7 @@ export default async function ExplorePage({
             const url = buildVersionedUrl(repoId, version, videoPath);
             // Check if videoUrl exists (status 200) - use proxy for authenticated requests
             try {
-              const proxyUrl = buildProxyUrl(url);
+              const proxyUrl = await buildProxyUrl(url);
               const headRes = await fetch(proxyUrl, { method: "HEAD" });
               if (headRes.ok) {
                 videoUrl = url;

src/utils/parquetUtils.ts

@@ -27,7 +27,7 @@ export interface DatasetMetadata {
 
 export async function fetchJson<T>(url: string): Promise<T> {
   // Use API proxy for authenticated requests (handles private repos)
-  const proxyUrl = buildProxyUrl(url);
+  const proxyUrl = await buildProxyUrl(url);
   const res = await fetch(proxyUrl);
   if (!res.ok) {
     const errorData = await res.json().catch(() => ({}));
@@ -48,7 +48,7 @@ export function formatStringWithVars(
 // Fetch and parse the Parquet file
 export async function fetchParquetFile(url: string): Promise<ArrayBuffer> {
   // Use API proxy for authenticated requests (handles private repos)
-  const proxyUrl = buildProxyUrl(url);
+  const proxyUrl = await buildProxyUrl(url);
   const res = await fetch(proxyUrl);
   
   if (!res.ok) {

src/utils/versionUtils.ts

@@ -34,7 +34,7 @@ export async function getDatasetInfo(repoId: string): Promise<DatasetInfo> {
     const testUrl = `${DATASET_URL}/${repoId}/resolve/main/meta/info.json`;
     
     // Use API proxy for authenticated requests
-    const proxyUrl = buildProxyUrl(testUrl);
+    const proxyUrl = await buildProxyUrl(testUrl);
     
     const controller = new AbortController();
     const timeoutId = setTimeout(() => controller.abort(), 10000); // 10 second timeout