Add FurniEditor tool with Next.js API integration

- FurniEditor component with Search/Edit tabs (NitroCard UI)
- useFurniEditor hook connecting to Next.js API routes via Vite proxy
- Edit Furni button in room infostand (godMode) with sprite ID lookup
- Toolbar: 3-column flex layout (icons | chat | friends)
- Heroicons SVG for ID/Sprite display in infostand and edit view
- Vite config: proxy /api to Next.js, aliases for renderer3 packages

src/components/MainView.tsx

@@ -9,6 +9,7 @@ import { CampaignView } from './campaign/CampaignView';
 import { CatalogView } from './catalog/CatalogView';
 import { ChatHistoryView } from './chat-history/ChatHistoryView';
 import { FloorplanEditorView } from './floorplan-editor/FloorplanEditorView';
+import { FurniEditorView } from './furni-editor/FurniEditorView';
 import { FriendsView } from './friends/FriendsView';
 import { GameCenterView } from './game-center/GameCenterView';
 import { GroupsView } from './groups/GroupsView';
@@ -115,6 +116,7 @@ export const MainView: FC<{}> = props =>
             <CampaignView />
             <GameCenterView />
             <FloorplanEditorView />
+            <FurniEditorView />
             <YoutubeTvView />
         </>
     );