Cap analytics timeframe label

resources/js/admin/mobile/EventAnalyticsPage.tsx

@@ -98,7 +98,10 @@ export default function MobileEventAnalyticsPage() {
   const hasTimeline = timeline.length > 0;
   const hasContributors = contributors.length > 0;
   const hasTasks = tasks.length > 0;
-  const timeframeHours = resolveTimelineHours(timeline.map((point) => point.timestamp), 12);
+  const fallbackHours = 12;
+  const rawTimelineHours = resolveTimelineHours(timeline.map((point) => point.timestamp), fallbackHours);
+  const timeframeHours = Math.min(rawTimelineHours, fallbackHours);
+  const isTimeframeCapped = rawTimelineHours > fallbackHours;
 
   // Prepare chart data
   const maxTimelineCount = resolveMaxCount(timeline.map((point) => point.count));
@@ -144,9 +147,16 @@ export default function MobileEventAnalyticsPage() {
               {t('analytics.activityTitle', 'Activity Timeline')}
             </Text>
           </XStack>
-          <Text fontSize="$xs" color={muted}>
-            {t('analytics.timeframe', 'Last {{hours}} hours', { hours: timeframeHours })}
-          </Text>
+          <YStack space="$0.5">
+            <Text fontSize="$xs" color={muted}>
+              {t('analytics.timeframe', 'Last {{hours}} hours', { hours: timeframeHours })}
+            </Text>
+            {isTimeframeCapped ? (
+              <Text fontSize="$xs" color={muted}>
+                {t('analytics.timeframeHint', 'Older activity hidden')}
+              </Text>
+            ) : null}
+          </YStack>
           
           {hasTimeline ? (
             <YStack height={180} justifyContent="flex-end" space="$2">