✨ Added code collapse state persistence

frontend/src/stores/editorStateStore.ts

@@ -7,6 +7,16 @@ export interface DocumentStats {
     selectedCharacters: number;
 }
 
+export interface FoldRange {
+    // 字符偏移（备用）
+    from: number;
+    to: number;
+    
+    // 行号
+    fromLine: number;
+    toLine: number;
+}
+
 export const useEditorStateStore = defineStore('editorState', () => {
     // 光标位置存储 Record<docId, cursorPosition>
     const cursorPositions = ref<Record<number, number>>({});
@@ -14,6 +24,9 @@ export const useEditorStateStore = defineStore('editorState', () => {
     // 文档统计数据存储 Record<docId, DocumentStats>
     const documentStats = ref<Record<number, DocumentStats>>({});
 
+    // 折叠状态存储 Record<docId, FoldRange[]>
+    const foldStates = ref<Record<number, FoldRange[]>>({});
+
     // 保存光标位置
     const saveCursorPosition = (docId: number, position: number) => {
         cursorPositions.value[docId] = position;
@@ -38,25 +51,40 @@ export const useEditorStateStore = defineStore('editorState', () => {
         };
     };
 
+    // 保存折叠状态
+    const saveFoldState = (docId: number, foldRanges: FoldRange[]) => {
+        foldStates.value[docId] = foldRanges;
+    };
+
+    // 获取折叠状态
+    const getFoldState = (docId: number): FoldRange[] => {
+        return foldStates.value[docId] || [];
+    };
+
     // 清除文档状态
     const clearDocumentState = (docId: number) => {
         delete cursorPositions.value[docId];
         delete documentStats.value[docId];
+        delete foldStates.value[docId];
     };
 
     // 清除所有状态
     const clearAllStates = () => {
         cursorPositions.value = {};
         documentStats.value = {};
+        foldStates.value = {};
     };
 
     return {
         cursorPositions,
         documentStats,
+        foldStates,
         saveCursorPosition,
         getCursorPosition,
         saveDocumentStats,
         getDocumentStats,
+        saveFoldState,
+        getFoldState,
         clearDocumentState,
         clearAllStates
     };
@@ -64,7 +92,7 @@ export const useEditorStateStore = defineStore('editorState', () => {
     persist: {
         key: 'voidraft-editor-state',
         storage: localStorage,
-        pick: ['cursorPositions']
+        pick: ['cursorPositions', 'foldStates']
     }
 });