feat: enhance stream URL handling and add initial offset support in VideoPlayer

k-tv-frontend/app/(main)/tv/page.tsx

@@ -57,7 +57,11 @@ export default function TvPage() {
   const { data: broadcast, isLoading: isLoadingBroadcast } =
     useCurrentBroadcast(channel?.id ?? "");
   const { data: epgSlots } = useEpg(channel?.id ?? "");
-  const { data: streamUrl } = useStreamUrl(channel?.id, token);
+  const { data: streamUrl } = useStreamUrl(
+    channel?.id,
+    token,
+    broadcast?.slot.id,
+  );
 
   // ------------------------------------------------------------------
   // Derived display values
@@ -176,7 +180,11 @@ export default function TvPage() {
     }
     if (streamUrl) {
       return (
-        <VideoPlayer src={streamUrl} className="absolute inset-0 h-full w-full" />
+        <VideoPlayer
+          src={streamUrl}
+          className="absolute inset-0 h-full w-full"
+          initialOffset={broadcast?.offset_secs}
+        />
       );
     }
     // Broadcast exists but stream URL resolving — show no-signal until ready