fix(admin): stop console Intl errors and log websocket drops

Use raw i18n for push template hints so ICU does not parse
{{placeholders}}. Pass total into the user list record count.
Allow log websocket origins behind the Next rewrite, skip the
proxy on Upgrade, and do not open a socket after unmount.

frontend/app/(main)/admin/logs/components/app-logs.tsx

@@ -252,10 +252,16 @@ export function AppLogs() {
 
   // ---- Initialize ------------------------------------------------------
   useEffect(() => {
-    loadHistory(0).then(() => connectWs());
+    let cancelled = false;
+    loadHistory(0).then(() => {
+      if (cancelled) return;
+      connectWs();
+    });
     return () => {
-      wsRef.current?.close();
+      cancelled = true;
+      const ws = wsRef.current;
       wsRef.current = null;
+      ws?.close();
     };
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);

frontend/app/(main)/admin/push/components/events-tab.tsx

@@ -713,8 +713,8 @@ export function EventsTab() {
                 </Label>
                 <span className='text-[10px] text-muted-foreground font-mono flex items-center'>
                   {newEventType === 'task'
-                    ? t('taskTemplateVars')
-                    : t('eventTemplateVars')}
+                    ? t.raw('taskTemplateVars')
+                    : t.raw('eventTemplateVars')}
                 </span>
               </div>
               <Textarea
@@ -893,8 +893,8 @@ export function EventsTab() {
                   </Label>
                   <span className='text-[10px] text-muted-foreground font-mono flex items-center'>
                     {selectedEvent.task_type
-                      ? t('taskTemplateVars')
-                      : t('eventTemplateVars')}
+                      ? t.raw('taskTemplateVars')
+                      : t.raw('eventTemplateVars')}
                   </span>
                 </div>
                 <Textarea

frontend/app/(main)/admin/users/components/user-filter-bar.tsx

@@ -218,7 +218,7 @@ export function UserFilterBar() {
 
       <div className='flex items-center gap-1.5 self-end lg:self-auto'>
         <span className='text-[10px] text-muted-foreground whitespace-nowrap'>
-          {t('totalRecords', { count: total })}
+          {t('totalRecords', { total })}
         </span>
         <div className='flex items-center border border-dashed rounded-md shadow-none'>
           <Button