feat(复习): 节点选择交互 + 移除 session 维度

- MindMapViewer 新增 selectable 模式，点击节点 emit node-select 事件
- ReviewRecall.vue 移除会话选择器，改为节点选择交互
- 支持 URL ?focusPath= 参数自动预设复习起点
- 节点选择弹窗确认后回忆导图根节点=选中节点标题
- ReviewDetail 和 Welcome 中调用 findNode API 匹配节点后跳转
- API: recallCompare 使用 focusPath 替代 sessionNum
- API: 新增 findNode 端点

src/api/standardMindMap.ts

@@ -23,7 +23,7 @@ export interface RecallRecord {
   id: number;
   taskNum: string;
   standardMapId: number;
-  sessionNum?: string;
+  focusPath?: string;
   recallContent: string;
   compareResult: string;
   recallRatio: number;
@@ -33,6 +33,12 @@ export interface RecallRecord {
   createdTime: string;
 }
 
+export interface FindNodeResult {
+  path: string;
+  nodeTitle: string;
+  score: number;
+}
+
 /** 获取/自动生成标准思维导图 */
 export const getStandardMindMap = (taskNum: string) => {
   return request.get(`/review/standard-mind-map/${taskNum}`);
@@ -48,13 +54,18 @@ export const updateStandardMindMap = (taskNum: string, outline: string) => {
   return request.put(`/review/standard-mind-map/${taskNum}`, { outline });
 };
 
-/** 用户提交回忆大纲，与标准导图对比（可选指定会话维度） */
-export const recallCompare = (taskNum: string, recallOutline: string, sessionNum?: string) => {
+/** 用户提交回忆大纲，与标准导图对比（可选指定起始节点路径） */
+export const recallCompare = (taskNum: string, recallOutline: string, focusPath?: string) => {
   const body: Record<string, any> = { recallOutline };
-  if (sessionNum) body.sessionNum = sessionNum;
+  if (focusPath) body.focusPath = focusPath;
   return request.post(`/review/standard-mind-map/${taskNum}/recall`, body);
 };
 
+/** 在标准导图中查找与内容最匹配的节点 */
+export const findNode = (taskNum: string, content: string) => {
+  return request.post(`/review/standard-mind-map/${taskNum}/find-node`, { content });
+};
+
 /** 获取该任务的所有回忆对比记录 */
 export const listRecallRecords = (taskNum: string) => {
   return request.get(`/review/standard-mind-map/${taskNum}/recall-records`);