fix: 移除未使用的变量声明

Author: CC11001100

src/components/MemoryPanel.tsx

@@ -11,14 +11,6 @@ interface MemoryPanelProps {
   previousAvailable?: number[];
 }
 
-// 调用栈帧接口
-interface StackFrame {
-  depth: number;
-  path: number[];
-  currentChoice: number | null;
-  availableChoices: number[];
-}
-
 interface VariableState {
   name: string;
   value: string;

src/hooks/useTutorialController.ts

@@ -23,17 +23,6 @@ interface TutorialPrompt {
   showPrediction?: boolean;
 }
 
-// 教程步骤顺序
-const TUTORIAL_STEP_ORDER: TutorialStep[] = [
-  'intro',
-  'first-select',
-  'continue-select', 
-  'first-complete',
-  'first-backtrack',
-  'explore-branch',
-  'summary',
-];
-
 const TUTORIAL_PROMPTS: Record<TutorialStep, TutorialPrompt> = {
   'intro': {
     title: '🎓 欢迎来到回溯算法教程',