refactor(toast): HUD 상태 라인 피드백 통합 및 우선순위 큐 적용

src/widgets/space-timer-hud/ui/SpaceTimerHudWidget.tsx

@@ -12,8 +12,13 @@ interface SpaceTimerHudWidgetProps {
   goal: string;
   className?: string;
   isImmersionMode?: boolean;
+  statusLine?: {
+    message: string;
+    actionLabel?: string;
+  } | null;
   onPlaybackStateChange?: (state: 'running' | 'paused') => void;
   onGoalCompleteRequest?: () => void;
+  onStatusAction?: () => void;
 }
 
 const HUD_ACTIONS = [
@@ -27,8 +32,10 @@ export const SpaceTimerHudWidget = ({
   goal,
   className,
   isImmersionMode = false,
+  statusLine = null,
   onPlaybackStateChange,
   onGoalCompleteRequest,
+  onStatusAction,
 }: SpaceTimerHudWidgetProps) => {
   const { isBreatheMode, hintMessage, triggerRestart } = useRestart30s();
   const normalizedGoal = goal.trim().length > 0 ? goal.trim() : '이번 한 조각을 설정해 주세요.';
@@ -89,7 +96,22 @@ export const SpaceTimerHudWidget = ({
                 완료
               </button>
             </div>
-            {hintMessage ? (
+            {statusLine ? (
+              <div className="mt-1 flex min-w-0 items-center gap-2">
+                <p className={cn('min-w-0 truncate text-[11px]', isImmersionMode ? 'text-white/68' : 'text-white/66')}>
+                  {statusLine.message}
+                </p>
+                {statusLine.actionLabel ? (
+                  <button
+                    type="button"
+                    onClick={onStatusAction}
+                    className="shrink-0 text-[11px] font-medium text-white/76 underline-offset-2 transition-colors hover:text-white/92 hover:underline"
+                  >
+                    {statusLine.actionLabel}
+                  </button>
+                ) : null}
+              </div>
+            ) : hintMessage ? (
               <p className={cn('mt-1 truncate text-[10px]', isImmersionMode ? 'text-white/52' : 'text-white/52')}>
                 {hintMessage}
               </p>