feat(Center): 投资规划中心新建计划/复盘乐观更新

- planningSlice: 添加 optimisticAddEvent、replaceEvent、removeEvent reducers
- EventFormModal: 新建模式使用乐观更新，立即关闭弹窗显示数据
- account.js: Mock 数据按日期倒序排序，最新事件在前

乐观更新流程：
1. 创建临时事件（负数 ID）立即更新 UI
2. 后台发送 API 请求
3. 成功后替换为真实数据，失败则回滚

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/mocks/handlers/account.js

@@ -494,6 +494,13 @@ export const accountHandlers = [
       });
     }
 
+    // 5. 按日期倒序排序（最新的在前面）
+    filteredEvents.sort((a, b) => {
+      const dateA = new Date(a.date || a.event_date);
+      const dateB = new Date(b.date || b.event_date);
+      return dateB - dateA;  // 倒序：新日期在前
+    });
+
     // 打印今天的事件（方便调试）
     const today = new Date().toISOString().split('T')[0];
     const todayEvents = filteredEvents.filter(e =>

src/store/slices/planningSlice.ts

@@ -196,6 +196,25 @@ const planningSlice = createSlice({
       state.allEvents.push(action.payload);
       state.lastUpdated = Date.now();
     },
+    /** 乐观添加事件（插入到开头，使用临时 ID） */
+    optimisticAddEvent: (state, action: PayloadAction<InvestmentEvent>) => {
+      state.allEvents.unshift(action.payload); // 新事件插入开头
+      state.lastUpdated = Date.now();
+    },
+    /** 替换临时事件为真实事件 */
+    replaceEvent: (state, action: PayloadAction<{ tempId: number; realEvent: InvestmentEvent }>) => {
+      const { tempId, realEvent } = action.payload;
+      const index = state.allEvents.findIndex(e => e.id === tempId);
+      if (index !== -1) {
+        state.allEvents[index] = realEvent;
+      }
+      state.lastUpdated = Date.now();
+    },
+    /** 移除事件（用于回滚） */
+    removeEvent: (state, action: PayloadAction<number>) => {
+      state.allEvents = state.allEvents.filter(e => e.id !== action.payload);
+      state.lastUpdated = Date.now();
+    },
   },
   extraReducers: (builder) => {
     builder
@@ -251,7 +270,14 @@ const planningSlice = createSlice({
 
 // ==================== 导出 ====================
 
-export const { clearEvents, setEvents, addEvent } = planningSlice.actions;
+export const {
+  clearEvents,
+  setEvents,
+  addEvent,
+  optimisticAddEvent,
+  replaceEvent,
+  removeEvent,
+} = planningSlice.actions;
 
 export default planningSlice.reducer;
 

src/views/Center/components/EventFormModal.tsx

@@ -36,7 +36,12 @@ import 'dayjs/locale/zh-cn';
 import { useSelector } from 'react-redux';
 
 import { useAppDispatch } from '@/store/hooks';
-import { fetchAllEvents } from '@/store/slices/planningSlice';
+import {
+  fetchAllEvents,
+  optimisticAddEvent,
+  replaceEvent,
+  removeEvent,
+} from '@/store/slices/planningSlice';
 import './EventFormModal.less';
 import type { InvestmentEvent, EventType } from '@/types';
 import { logger } from '@/utils/logger';
@@ -276,7 +281,7 @@ export const EventFormModal: React.FC<EventFormModalProps> = ({
     setStockOptions(options.length > 0 ? options : watchlistOptions);
   }, [allStocks, watchlistOptions]);
 
-  // 保存数据
+  // 保存数据（新建模式使用乐观更新）
   const handleSave = useCallback(async (): Promise<void> => {
     try {
       const values = await form.validateFields();
@@ -316,23 +321,72 @@ export const EventFormModal: React.FC<EventFormModalProps> = ({
         ? `${base}/api/account/${apiEndpoint}/${editingEvent.id}`
         : `${base}/api/account/${apiEndpoint}`;
 
-      const method = mode === 'edit' ? 'PUT' : 'POST';
+      // ===== 新建模式：乐观更新 =====
+      if (mode === 'create') {
+        const tempId = -Date.now(); // 负数临时 ID，避免与服务器 ID 冲突
+        const tempEvent: InvestmentEvent = {
+          id: tempId,
+          title: values.title,
+          content: values.content || '',
+          description: values.content || '',
+          date: values.date.format('YYYY-MM-DD'),
+          event_date: values.date.format('YYYY-MM-DD'),
+          type: eventType,
+          stocks: stocksWithNames,
+          status: 'active',
+          source: 'user',
+          created_at: new Date().toISOString(),
+          updated_at: new Date().toISOString(),
+        };
 
+        // ① 立即更新 UI
+        dispatch(optimisticAddEvent(tempEvent));
+        setSaving(false);
+        onClose(); // 立即关闭弹窗
+
+        // ② 后台发送 API 请求
+        try {
+          const response = await fetch(url, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            credentials: 'include',
+            body: JSON.stringify(requestData),
+          });
+
+          const data = await response.json();
+
+          if (response.ok && data.success) {
+            // ③ 用真实数据替换临时数据
+            dispatch(replaceEvent({ tempId, realEvent: data.data }));
+            logger.info('EventFormModal', `创建${label}成功`, { title: values.title });
+            message.success('添加成功');
+            onSuccess();
+          } else {
+            throw new Error(data.error || '创建失败');
+          }
+        } catch (error) {
+          // ④ 失败回滚
+          dispatch(removeEvent(tempId));
+          logger.error('EventFormModal', 'handleSave optimistic rollback', error);
+          message.error('创建失败，请重试');
+        }
+        return;
+      }
+
+      // ===== 编辑模式：传统更新 =====
       const response = await fetch(url, {
-        method,
-        headers: {
-          'Content-Type': 'application/json',
-        },
+        method: 'PUT',
+        headers: { 'Content-Type': 'application/json' },
         credentials: 'include',
         body: JSON.stringify(requestData),
       });
 
       if (response.ok) {
-        logger.info('EventFormModal', `${mode === 'edit' ? '更新' : '创建'}${label}成功`, {
+        logger.info('EventFormModal', `更新${label}成功`, {
           itemId: editingEvent?.id,
           title: values.title,
         });
-        message.success(mode === 'edit' ? '修改成功' : '添加成功');
+        message.success('修改成功');
         onClose();
         onSuccess();
         // 使用 Redux 刷新数据，确保列表和日历同步