Removes dropdown selector for refresh cycle. Changes refresh to 20 seconds.

lib/live_info_panel.dart

@@ -68,61 +68,6 @@ class LiveInfoPanel extends StatelessWidget {
                     ),
                   ),
                 ),
-                Container(
-                  padding: const EdgeInsets.symmetric(
-                    horizontal: 10,
-                    vertical: 5,
-                  ),
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(999),
-                    color: Colors.black.withValues(alpha: 0.12),
-                  ),
-                  child: Text(
-                    snapshot?.sourceEnabled ?? 'Unknown Source',
-                    style: Theme.of(context).textTheme.labelSmall?.copyWith(
-                      fontWeight: FontWeight.w700,
-                    ),
-                  ),
-                ),
-                const SizedBox(width: 8),
-                PopupMenuButton<int>(
-                  tooltip: 'Set refresh interval',
-                  initialValue: liveInfo.refreshIntervalSeconds,
-                  onSelected: liveInfo.setRefreshIntervalSeconds,
-                  itemBuilder: (BuildContext context) {
-                    return intervalOptions
-                        .map(
-                          (int seconds) => PopupMenuItem<int>(
-                            value: seconds,
-                            child: Text('$seconds seconds'),
-                          ),
-                        )
-                        .toList(growable: false);
-                  },
-                  child: Container(
-                    padding: const EdgeInsets.symmetric(
-                      horizontal: 10,
-                      vertical: 6,
-                    ),
-                    decoration: BoxDecoration(
-                      borderRadius: BorderRadius.circular(8),
-                      color: Colors.black.withValues(alpha: 0.08),
-                    ),
-                    child: Text(
-                      '${liveInfo.refreshIntervalSeconds}s',
-                      style: Theme.of(context).textTheme.labelMedium?.copyWith(
-                        fontWeight: FontWeight.w700,
-                      ),
-                    ),
-                  ),
-                ),
-                IconButton(
-                  tooltip: 'Refresh now',
-                  onPressed: liveInfo.isLoading
-                      ? null
-                      : () => liveInfo.refresh(),
-                  icon: const Icon(Icons.refresh_rounded),
-                ),
               ],
             ),
             const SizedBox(height: 8),