refactor(feedback): 전역 토스트 제거 및 HUD 오버레이 피드백 도입

src/widgets/space-tools-dock/ui/SpaceToolsDockWidget.tsx

@@ -39,7 +39,6 @@ interface SpaceToolsDockWidgetProps {
   onDeleteThought: (thoughtId: string) => RecentThought | null;
   onSetThoughtCompleted: (thoughtId: string, isCompleted: boolean) => RecentThought | null;
   onRestoreThought: (thought: RecentThought) => void;
-  onRestoreThoughts: (thoughts: RecentThought[]) => void;
   onClearInbox: () => RecentThought[];
   onStatusMessage: (payload: HudStatusLinePayload) => void;
   onExitRequested: () => void;
@@ -65,7 +64,6 @@ export const SpaceToolsDockWidget = ({
   onDeleteThought,
   onSetThoughtCompleted,
   onRestoreThought,
-  onRestoreThoughts,
   onClearInbox,
   onStatusMessage,
   onExitRequested,
@@ -194,26 +192,7 @@ export const SpaceToolsDockWidget = ({
   };
 
   const handleInboxComplete = (thought: RecentThought) => {
-    const previousThought = onSetThoughtCompleted(thought.id, !thought.isCompleted);
-
-    if (!previousThought) {
-      return;
-    }
-
-    const willBeCompleted = !thought.isCompleted;
-
-    onStatusMessage({
-      message: willBeCompleted ? '완료 처리됨' : '완료 해제됨',
-      durationMs: 4200,
-      priority: 'undo',
-      action: {
-        label: '실행취소',
-        onClick: () => {
-          onRestoreThought(previousThought);
-          onStatusMessage({ message: willBeCompleted ? '완료 처리를 취소했어요.' : '완료 해제를 취소했어요.' });
-        },
-      },
-    });
+    onSetThoughtCompleted(thought.id, !thought.isCompleted);
   };
 
   const handleInboxDelete = (thought: RecentThought) => {
@@ -238,25 +217,7 @@ export const SpaceToolsDockWidget = ({
   };
 
   const handleInboxClear = () => {
-    const snapshot = onClearInbox();
-
-    if (snapshot.length === 0) {
-      onStatusMessage({ message: '인박스가 비어 있어요.' });
-      return;
-    }
-
-    onStatusMessage({
-      message: '모두 비워짐',
-      durationMs: 4200,
-      priority: 'undo',
-      action: {
-        label: '실행취소',
-        onClick: () => {
-          onRestoreThoughts(snapshot);
-          onStatusMessage({ message: '인박스를 복구했어요.' });
-        },
-      },
-    });
+    onClearInbox();
   };
 
   const handlePlanPillClick = () => {
@@ -284,9 +245,6 @@ export const SpaceToolsDockWidget = ({
       packId,
       onTimerSelect,
       onSelectPreset,
-      onApplied: (message) => {
-        onStatusMessage({ message, durationMs: 1200 });
-      },
     });
 
   const showVolumeFeedback = (nextVolume: number) => {