Jury dashboard compact layout, assignment redesign, auth fixes

- Jury dashboard: collapse zero-assignment state into single welcome card
  with inline quick actions; merge completion bar into stats row; tighten spacing
- Manual assignment: replace tiny Dialog modal with inline collapsible section
  featuring searchable juror combobox and multi-select project list with bulk assign
- Fix applicant invite URL path (/auth/accept-invite -> /accept-invite)
- Add APPLICANT role redirect to /my-submission from root page
- Add Applicant label to accept-invite role display
- Fix a/an grammar in invitation emails and accept-invite page
- Set-password page: use MOPC logo instead of lock icon
- Notification bell: remove filter tabs, always show all notifications

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

src/components/shared/notification-bell.tsx

@@ -210,7 +210,6 @@ function NotificationItem({
 }
 
 export function NotificationBell() {
-  const [filter, setFilter] = useState<'all' | 'unread'>('all')
   const [open, setOpen] = useState(false)
   const pathname = usePathname()
 
@@ -238,7 +237,7 @@ export function NotificationBell() {
 
   const { data: notificationData, refetch } = trpc.notification.list.useQuery(
     {
-      unreadOnly: filter === 'unread',
+      unreadOnly: false,
       limit: 20,
     },
     {
@@ -379,32 +378,6 @@ export function NotificationBell() {
           </div>
         </div>
 
-        {/* Filter tabs */}
-        <div className="flex border-b">
-          <button
-            className={cn(
-              'flex-1 py-2 text-sm transition-colors',
-              filter === 'all'
-                ? 'border-b-2 border-primary font-medium'
-                : 'text-muted-foreground hover:text-foreground'
-            )}
-            onClick={() => setFilter('all')}
-          >
-            All
-          </button>
-          <button
-            className={cn(
-              'flex-1 py-2 text-sm transition-colors',
-              filter === 'unread'
-                ? 'border-b-2 border-primary font-medium'
-                : 'text-muted-foreground hover:text-foreground'
-            )}
-            onClick={() => setFilter('unread')}
-          >
-            Unread ({unreadCount})
-          </button>
-        </div>
-
         {/* Notification list */}
         <ScrollArea className="h-[400px]">
           <div className="divide-y">
@@ -424,9 +397,7 @@ export function NotificationBell() {
               <div className="p-8 text-center">
                 <Bell className="h-10 w-10 mx-auto text-muted-foreground/30" />
                 <p className="mt-2 text-muted-foreground">
-                  {filter === 'unread'
-                    ? 'No unread notifications'
-                    : 'No notifications yet'}
+                  No notifications yet
                 </p>
               </div>
             )}