address review feedback

- Discard the export row when an export fails before or during ffmpeg, so it doesn't stay in progress until a restart
- Skip the empty thumbnail path when discarding a failed export
- Measure preview clip duration from the clamped start
- Default live player volume to 1 when the group has no saved setting
- Clear the unsaved registration message when notification registration fails
- Keep a highlight timer per trigger
- Remove the severity order_by in /review, which the start_time order_by replaced

web/src/components/config-form/sectionExtras/NotificationsSettingsExtras.tsx

@@ -415,6 +415,7 @@ export default function NotificationsSettingsExtras({
               pushSubscription.unsubscribe();
               workerRegistration.unregister();
               setRegistration(null);
+              removeMessage("notification_settings", "registration");
             });
         })
         .catch(() => {
@@ -423,9 +424,10 @@ export default function NotificationsSettingsExtras({
           });
           workerRegistration.unregister();
           setRegistration(null);
+          removeMessage("notification_settings", "registration");
         });
     },
-    [addMessage, publicKey, t],
+    [addMessage, removeMessage, publicKey, t],
   );
 
   useEffect(() => {

web/src/views/live/DraggableGridLayout.tsx

@@ -794,7 +794,7 @@ export default function DraggableGridLayout({
                   toggleAudio={() => toggleAudio(camera.name)}
                   statsState={statsStates[camera.name]}
                   toggleStats={() => toggleStats(camera.name)}
-                  volumeState={volumeStates[camera.name]}
+                  volumeState={volumeStates[camera.name] ?? 1}
                   setVolumeState={(value) =>
                     setVolumeStates((prev) => ({
                       ...prev,
@@ -839,7 +839,7 @@ export default function DraggableGridLayout({
                     onError={(e) => handleError(camera.name, e)}
                     onResetLiveMode={() => resetPreferredLiveMode(camera.name)}
                     playAudio={audioStates[camera.name]}
-                    volume={volumeStates[camera.name]}
+                    volume={volumeStates[camera.name] ?? 1}
                     onLiveAspectChange={liveAspectHandlers[camera.name]}
                   />
                 </GridLiveContextMenu>

web/src/views/live/LiveDashboardView.tsx

@@ -629,7 +629,7 @@ export default function LiveDashboardView({
                           resetPreferredLiveMode(camera.name)
                         }
                         playAudio={audioStates[camera.name] ?? false}
-                        volume={volumeStates[camera.name]}
+                        volume={volumeStates[camera.name] ?? 1}
                       />
                     </LiveContextMenu>
                   );

web/src/views/settings/TriggerView.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useMemo, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { toast } from "sonner";
 import useSWR from "swr";
@@ -133,6 +133,9 @@ export default function TriggerView({
 
   // watch websocket for updates
   const { payload: triggers_status_ws } = useTriggers();
+  const highlightTimers = useRef<Record<string, ReturnType<typeof setTimeout>>>(
+    {},
+  );
 
   useEffect(() => {
     if (!triggers_status_ws) return;
@@ -148,11 +151,11 @@ export default function TriggerView({
       return current;
     });
 
-    // not cleared on the next payload, or a second trigger firing within
-    // 3s would leave this one highlighted
-    setTimeout(() => {
+    const name = triggers_status_ws.name;
+    clearTimeout(highlightTimers.current[name]);
+    highlightTimers.current[name] = setTimeout(() => {
       setTriggeredTrigger((prev) =>
-        (prev || []).filter((name) => name !== triggers_status_ws.name),
+        (prev || []).filter((triggered) => triggered !== name),
       );
     }, 3000);
   }, [triggers_status_ws, selectedCamera, mutate]);