feat relay live viewer frames through media service

client/src/lib/media.ts

@@ -51,6 +51,8 @@ export type MediaSession = {
   streamConnected: boolean;
   lastStreamAt?: string;
   viewerCount?: number;
+  liveFrameUrl?: string;
+  liveFrameUpdatedAt?: string;
   playback: {
     webmUrl?: string;
     mp4Url?: string;
@@ -131,6 +133,14 @@ export async function signalMediaViewerSession(sessionId: string, payload: { sdp
   });
 }
 
+export async function uploadMediaLiveFrame(sessionId: string, blob: Blob) {
+  return request<{ session: MediaSession }>(`/sessions/${sessionId}/live-frame`, {
+    method: "POST",
+    headers: { "Content-Type": blob.type || "image/jpeg" },
+    body: blob,
+  });
+}
+
 export async function uploadMediaSegment(
   sessionId: string,
   sequence: number,
@@ -173,6 +183,10 @@ export async function getMediaSession(sessionId: string) {
   return request<{ session: MediaSession }>(`/sessions/${sessionId}`);
 }
 
+export function getMediaAssetUrl(path: string) {
+  return `${MEDIA_BASE}${path.startsWith("/") ? path : `/${path}`}`;
+}
+
 export function formatRecordingTime(milliseconds: number) {
   const totalSeconds = Math.max(0, Math.floor(milliseconds / 1000));
   const minutes = Math.floor(totalSeconds / 60);