Fix recorder finalize path and add invite-gated login

server/mediaService.ts

@@ -23,12 +23,30 @@ function getMediaBaseUrl() {
   return ENV.mediaServiceUrl.replace(/\/+$/, "");
 }
 
-export async function getRemoteMediaSession(sessionId: string) {
-  const response = await fetch(`${getMediaBaseUrl()}/sessions/${sessionId}`);
-  if (!response.ok) {
-    const message = await response.text().catch(() => response.statusText);
-    throw new Error(`Media service request failed (${response.status}): ${message}`);
+function getMediaCandidateUrls(path: string) {
+  const baseUrl = getMediaBaseUrl();
+  if (baseUrl.endsWith("/media")) {
+    return [`${baseUrl}${path}`];
   }
-  const payload = await response.json() as { session: RemoteMediaSession };
-  return payload.session;
+  return [`${baseUrl}${path}`, `${baseUrl}/media${path}`];
+}
+
+export async function getRemoteMediaSession(sessionId: string) {
+  let lastError: Error | null = null;
+
+  for (const url of getMediaCandidateUrls(`/sessions/${encodeURIComponent(sessionId)}`)) {
+    const response = await fetch(url);
+    if (response.ok) {
+      const payload = await response.json() as { session: RemoteMediaSession };
+      return payload.session;
+    }
+
+    const message = await response.text().catch(() => response.statusText);
+    lastError = new Error(`Media service request failed (${response.status}): ${message}`);
+    if (response.status !== 404) {
+      break;
+    }
+  }
+
+  throw lastError ?? new Error("Media service request failed");
 }