feat: extended profile fields, push rule editor, server ACL editor

P2-8: Pronouns (m.pronouns) and Timezone (m.tz) fields in Settings →
Account → Profile; saved via MSC4133 PUT /profile/{userId}/{field};
useExtendedProfile hook fetches both in parallel; UserHero displays
pronouns below display name and timezone string below username

P2-11: Full push rule editor in Settings → Notifications below keyword
rules; covers override/room/sender/underride rule kinds; enable/disable
toggle per rule, human-readable labels for built-in rules, delete button
for custom rules, add-rule form for room and sender rules

P2-12: Server ACL viewer/editor in room settings (Server ACL tab);
reads m.room.server_acl state event; allow/deny server lists with
wildcard validation; allow IP literals toggle; power-level gated
(edit requires sufficient PL, otherwise read-only view)

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

src/app/features/settings/notifications/Notifications.tsx

@@ -5,6 +5,7 @@ import { SystemNotification } from './SystemNotification';
 import { AllMessagesNotifications } from './AllMessages';
 import { SpecialMessagesNotifications } from './SpecialMessages';
 import { KeywordMessagesNotifications } from './KeywordMessages';
+import { PushRuleEditor } from './PushRuleEditor';
 import { SequenceCard } from '../../../components/sequence-card';
 import { SequenceCardStyle } from '../styles.css';
 import { SettingTile } from '../../../components/setting-tile';
@@ -37,6 +38,7 @@ export function Notifications({ requestClose }: NotificationsProps) {
               <AllMessagesNotifications />
               <SpecialMessagesNotifications />
               <KeywordMessagesNotifications />
+              <PushRuleEditor />
               <Box direction="Column" gap="100">
                 <Text size="L400">Block Messages</Text>
                 <SequenceCard