handle offline channels gracefully in native video player

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/screens/channel/video/native_video.dart

@@ -17,11 +17,14 @@ class NativeVideo extends StatelessWidget {
         final controller = nativeVideoStore.controller;
         final error = nativeVideoStore.error;
 
+        final isOffline =
+            nativeVideoStore.streamInfo == null && error == null;
+
         return ColoredBox(
           color: Colors.black,
           child: Stack(
             children: [
-              if (controller != null)
+              if (controller != null && !isOffline)
                 NativeVideoPlayer(
                   key: ObjectKey(controller),
                   controller: controller,
@@ -37,6 +40,17 @@ class NativeVideo extends StatelessWidget {
                     ),
                   ),
                 ),
+              if (isOffline)
+                const Center(
+                  child: Text(
+                    'Offline',
+                    style: TextStyle(
+                      color: Colors.white38,
+                      fontSize: 16,
+                      fontWeight: FontWeight.w500,
+                    ),
+                  ),
+                ),
             ],
           ),
         );

lib/screens/channel/video/native_video_store.dart

@@ -185,9 +185,15 @@ abstract class NativeVideoStoreBase with Store implements VideoPlayerInterface {
         _error = null;
       });
     } catch (e) {
+      // Wait for stream info so we can distinguish "offline" from "broken".
+      await updateStreamInfo();
       runInAction(() {
-        _error =
-            'Native player failed to load. Try the standard player in Settings.';
+        // Only show the error if the stream is actually live — an offline
+        // channel is expected to fail here and the overlay handles it.
+        if (_streamInfo != null) {
+          _error =
+              'Native player failed to load. Try the standard player in Settings.';
+        }
       });
       debugPrint('NativeVideoStore init error: $e');
     }

lib/screens/channel/video/video_overlay.dart

@@ -260,7 +260,6 @@ class VideoOverlay extends StatelessWidget {
                                     displayName: chatStore.displayName,
                                     showUptime: false,
                                     showViewerCount: false,
-                                    showOfflineIndicator: false,
                                     textColor: surfaceColor,
                                     isOffline: true,
                                     isInSharedChatMode: