feat(sound): 우하단 빠른 볼륨/3프리셋 및 더미 저장 복원 적용

src/widgets/space-workspace/ui/SpaceWorkspaceWidget.tsx

@@ -80,6 +80,10 @@ export const SpaceWorkspaceWidget = () => {
   const {
     selectedPresetId,
     setSelectedPresetId,
+    masterVolume,
+    setMasterVolume,
+    isMuted,
+    setMuted,
   } = useSoundPresetSelection(initialSoundPresetId);
 
   const selectedRoom = useMemo(() => {
@@ -212,6 +216,10 @@ export const SpaceWorkspaceWidget = () => {
         onRoomSelect={setSelectedRoomId}
         onTimerSelect={setSelectedTimerLabel}
         onSelectPreset={setSelectedPresetId}
+        soundVolume={masterVolume}
+        onSetSoundVolume={setMasterVolume}
+        isSoundMuted={isMuted}
+        onSetSoundMuted={setMuted}
         onCaptureThought={(note) => addThought(note, selectedRoom.name)}
         onDeleteThought={removeThought}
         onSetThoughtCompleted={setThoughtCompleted}