feat(backlog): save only the changed fields

src/components/PlayingHint.jsx

@@ -5,7 +5,7 @@ import {Gamepad2, Loader2} from 'lucide-react';
 
 import {Button} from '@/components/ui/button';
 import {Card} from '@/components/ui/card';
-import {saveBacklogEntry} from '../utils/backlog.js';
+import {saveGameStatus} from '../utils/backlog.js';
 import {formatPlaytime} from '../utils/games.js';
 
 /**
@@ -22,9 +22,7 @@ export default function PlayingHint({game, onChanged}) {
     const setPlaying = async () => {
         setBusy(true);
         try {
-            const response = await saveBacklogEntry(game.appid, {
-                status: 'PLAYING', rating: game.rating ?? null, notes: game.notes ?? null, priority: game.priority ?? null,
-            });
+            const response = await saveGameStatus(game.appid, 'PLAYING');
             if (response.status === 401) return;
             if (!response.ok) {
                 toast.error(t('BACKLOG.SAVE_FAILED'));