Phase A: clear all react-hooks/exhaustive-deps warnings via useEffectEvent or hoisting

Eliminate the four remaining missing-dependency warnings reported by
react-hooks v7. Each one was a real stale-closure or re-trigger hazard;
the fix matches the intent rather than just silencing the linter.

- src/App.tsx (line 448): wrap showSessionExpired with useEffectEvent
  (onSessionExpired) so the prepare effect doesn't re-run on every
  showSessionExpired identity change but still calls the latest
  callback. Replace the two in-effect call sites.
- src/components/furni-editor/views/FurniEditorSearchView.tsx: wrap
  the on-mount onSearch('', '', 1) call with useEffectEvent so the
  callback prop isn't a missing dependency.
- src/components/notification-center/views/bubble-layouts/
  NotificationBadgeReceivedBubbleView.tsx: wrap the
  "fetch badges only if empty on mount" check with useEffectEvent
  so badgeCodes.length isn't required as a dep (and won't re-fetch
  every count change).
- src/components/navigator/views/room-settings/
  NavigatorRoomSettingsRightsTabView.tsx: switch deps from
  roomData?.roomId to roomData (the body uses roomData.roomId after
  an early return; the linter wanted the whole object).
- src/api/ui-settings/UiSettingsContext.tsx: hoist ALL_CSS_VARS
  outside the component (it's a static constant).

After this, yarn eslint reports zero exhaustive-deps warnings across
the whole src/.

https://claude.ai/code/session_01GrR87LAqnAEyKG2ZbmQt5Q

src/App.tsx

@@ -1,5 +1,5 @@
 import { GetAssetManager, GetAvatarRenderManager, GetCommunication, GetConfiguration, GetLocalizationManager, GetRoomEngine, GetRoomSessionManager, GetSessionDataManager, GetSoundManager, GetStage, GetTexturePool, GetTicker, HabboWebTools, LegacyExternalInterface, LoadGameUrlEvent, NitroEventType, NitroLogger, NitroVersion, PrepareRenderer } from '@nitrots/nitro-renderer';
-import { FC, useCallback, useEffect, useRef, useState } from 'react';
+import { FC, useCallback, useEffect, useEffectEvent, useRef, useState } from 'react';
 import { ClearRememberLogin, GetRememberLogin, GetUIVersion, StoreRememberLoginFromPayload } from './api';
 import { Base } from './common';
 import { LoadingView } from './components/loading/LoadingView';
@@ -316,6 +316,8 @@ export const App: FC<{}> = props =>
         };
     }, []);
 
+    const onSessionExpired = useEffectEvent(() => showSessionExpired());
+
     useEffect(() =>
     {
         const prepare = async (width: number, height: number) =>
@@ -379,7 +381,7 @@ export const App: FC<{}> = props =>
                             return;
                         }
 
-                        showSessionExpired();
+                        onSessionExpired();
                         return;
                     }
                 }
@@ -432,7 +434,7 @@ export const App: FC<{}> = props =>
             {
                 NitroLogger.error(err);
                 setIsEnteringHotel(false);
-                showSessionExpired();
+                onSessionExpired();
             }
         };
 

src/api/ui-settings/UiSettingsContext.tsx

@@ -60,6 +60,13 @@ const saveSettings = (settings: IUiSettings): void =>
     {}
 };
 
+const ALL_CSS_VARS = [
+    '--ui-accent-color', '--ui-accent-dark',
+    '--ui-ctx-bg', '--ui-ctx-header-bg', '--ui-ctx-item-bg1', '--ui-ctx-item-bg2',
+    '--ui-btn-primary-bg', '--ui-btn-primary-border',
+    '--ui-dark-bg', '--ui-dark-border'
+];
+
 const sendComposer = (composer: any): void =>
 {
     try
@@ -189,13 +196,6 @@ export const UiSettingsProvider: FC<PropsWithChildren> = ({ children }) =>
 
     const isCustomActive = settings.colorMode !== 'default';
 
-    const ALL_CSS_VARS = [
-        '--ui-accent-color', '--ui-accent-dark',
-        '--ui-ctx-bg', '--ui-ctx-header-bg', '--ui-ctx-item-bg1', '--ui-ctx-item-bg2',
-        '--ui-btn-primary-bg', '--ui-btn-primary-border',
-        '--ui-dark-bg', '--ui-dark-border'
-    ];
-
     useEffect(() =>
     {
         const root = document.documentElement;

src/components/furni-editor/views/FurniEditorSearchView.tsx

@@ -1,4 +1,4 @@
-import { FC, useCallback, useEffect, useMemo, useState } from 'react';
+import { FC, useCallback, useEffect, useEffectEvent, useMemo, useState } from 'react';
 import { Button, Column, Flex, LayoutFurniIconImageView, Text } from '../../../common';
 import { FurniItem } from '../../../hooks/furni-editor';
 
@@ -30,9 +30,11 @@ export const FurniEditorSearchView: FC<FurniEditorSearchViewProps> = props =>
     const [ sortField, setSortField ] = useState<SortField>('id');
     const [ sortDir, setSortDir ] = useState<SortDir>('asc');
 
+    const initialSearch = useEffectEvent(() => onSearch('', '', 1));
+
     useEffect(() =>
     {
-        onSearch('', '', 1);
+        initialSearch();
     }, []);
 
     const handleSearch = useCallback(() =>

src/components/navigator/views/room-settings/NavigatorRoomSettingsRightsTabView.tsx

@@ -100,7 +100,7 @@ export const NavigatorRoomSettingsRightsTabView: FC<NavigatorRoomSettingsTabView
         if(!roomData) return;
 
         SendMessageComposer(new RoomUsersWithRightsComposer(roomData.roomId));
-    }, [ roomData?.roomId ]);
+    }, [ roomData ]);
 
     return (
         <Grid>

src/components/notification-center/views/bubble-layouts/NotificationBadgeReceivedBubbleView.tsx

@@ -1,5 +1,5 @@
 import { RequestBadgesComposer } from '@nitrots/nitro-renderer';
-import { FC, useEffect } from 'react';
+import { FC, useEffect, useEffectEvent } from 'react';
 import { LocalizeText, NotificationBubbleItem, SendMessageComposer } from '../../../../api';
 import { Flex, LayoutNotificationBubbleView, LayoutNotificationBubbleViewProps, Text } from '../../../../common';
 import { useInventoryBadges } from '../../../../hooks';
@@ -14,9 +14,14 @@ export const NotificationBadgeReceivedBubbleView: FC<NotificationBadgeReceivedBu
     const { item = null, onClose = null, ...rest } = props;
     const { badgeCodes = [], toggleBadge = null } = useInventoryBadges();
 
-    useEffect(() =>
+    const requestBadgesIfEmpty = useEffectEvent(() =>
     {
         if(badgeCodes.length === 0) SendMessageComposer(new RequestBadgesComposer());
+    });
+
+    useEffect(() =>
+    {
+        requestBadgesIfEmpty();
     }, []);
 
     const handleWear = (event: React.MouseEvent) =>