✨(frontend) display host status to meeting participants

Add host identification display for participants using boolean flag from
LiveKit token attributes. Currently passes simple boolean but will be
refactored to distinguish owner/admin/member roles and host/co-host
with different privileges.

Security note: attributes are not fully secure as participants can
update their own metadata, potentially faking admin status. However,
consequences are limited to user confusion without destructive
capabilities. Metadata updates currently needed for name changes and
hand raising functionality.

Plan to remove canUpdateOwnMetadata permission to strengthen security
while preserving essential user interaction capabilities.

src/frontend/src/features/rooms/livekit/components/controls/Participants/ParticipantListItem.tsx

@@ -1,10 +1,11 @@
 import { css } from '@/styled-system/css'
 
-import { HStack } from '@/styled-system/jsx'
+import { HStack, VStack } from '@/styled-system/jsx'
 import { Text } from '@/primitives/Text'
 import { useTranslation } from 'react-i18next'
 import { Avatar } from '@/components/Avatar'
 import { getParticipantColor } from '@/features/rooms/utils/getParticipantColor'
+import { getParticipantIsRoomAdmin } from '@/features/rooms/utils/getParticipantIsRoomAdmin'
 import { Participant, Track } from 'livekit-client'
 import { isLocal } from '@/utils/livekit'
 import {
@@ -102,36 +103,41 @@ export const ParticipantListItem = ({
     >
       <HStack>
         <Avatar name={name} bgColor={getParticipantColor(participant)} />
-        <Text
-          variant={'sm'}
-          className={css({
-            userSelect: 'none',
-            cursor: 'default',
-            display: 'flex',
-          })}
-        >
-          <span
+        <VStack gap={0} alignItems="start">
+          <Text
+            sm
             className={css({
-              whiteSpace: 'nowrap',
-              overflow: 'hidden',
-              textOverflow: 'ellipsis',
-              maxWidth: '120px',
-              display: 'block',
+              userSelect: 'none',
+              cursor: 'default',
+              display: 'flex',
             })}
           >
-            {name}
-          </span>
-          {isLocal(participant) && (
             <span
               className={css({
-                marginLeft: '.25rem',
                 whiteSpace: 'nowrap',
+                overflow: 'hidden',
+                textOverflow: 'ellipsis',
+                maxWidth: '120px',
+                display: 'block',
               })}
             >
-              ({t('participants.you')})
+              {name}
             </span>
+            {isLocal(participant) && (
+              <span
+                className={css({
+                  marginLeft: '.25rem',
+                  whiteSpace: 'nowrap',
+                })}
+              >
+                ({t('participants.you')})
+              </span>
+            )}
+          </Text>
+          {getParticipantIsRoomAdmin(participant) && (
+            <Text variant="xsNote">{t('participants.host')}</Text>
           )}
-        </Text>
+        </VStack>
       </HStack>
       <HStack>
         <MicIndicator participant={participant} />

src/frontend/src/features/rooms/utils/getParticipantIsRoomAdmin.ts

@@ -0,0 +1,12 @@
+import { Participant } from 'livekit-client'
+
+export const getParticipantIsRoomAdmin = (
+  participant: Participant
+): boolean => {
+  const attributes = participant.attributes
+
+  if (!attributes) {
+    return false
+  }
+  return attributes?.room_admin === 'true'
+}

src/frontend/src/locales/de/rooms.json

@@ -426,6 +426,7 @@
   "participants": {
     "subheading": "Im Raum",
     "you": "Du",
+    "host": "Host",
     "contributors": "Mitwirkende",
     "collapsable": {
       "open": "{{name}}-Liste öffnen",

src/frontend/src/locales/en/rooms.json

@@ -426,6 +426,7 @@
   "participants": {
     "subheading": "In room",
     "you": "You",
+    "host": "Host",
     "contributors": "Contributors",
     "collapsable": {
       "open": "Open {{name}} list",

src/frontend/src/locales/fr/rooms.json

@@ -427,6 +427,7 @@
     "subheading": "Dans la réunion",
     "you": "Vous",
     "contributors": "Contributeurs",
+    "host": "Organisateur de la réunion",
     "collapsable": {
       "open": "Ouvrir la liste {{name}}",
       "close": "Fermer la liste {{name}}"

src/frontend/src/locales/nl/rooms.json

@@ -426,6 +426,7 @@
   "participants": {
     "subheading": "In de ruimte",
     "you": "U",
+    "host": "Host",
     "contributors": "Deelnemers",
     "collapsable": {
       "open": "Open {{name}} lijst",