甘特图组件，有点改炸了

components/Gantt/core/DataManager.js

@@ -0,0 +1,43 @@
+// DataManager：任务数据管理器，负责任务的增删改查、分组、校验和变更通知
+export default class DataManager {
+  constructor(tasks = [], dimensions = []) {
+    this.tasks = tasks;
+    this.dimensions = dimensions;
+    this.listeners = [];
+  }
+  // 新增任务
+  addTask(task) {
+    this.tasks.push(task);
+    this.notify();
+  }
+  // 更新任务
+  updateTask(id, data) {
+    const idx = this.tasks.findIndex(t => t.id === id);
+    if (idx !== -1) {
+      this.tasks[idx] = { ...this.tasks[idx], ...data };
+      this.notify();
+    }
+  }
+  // 删除任务
+  removeTask(id) {
+    this.tasks = this.tasks.filter(t => t.id !== id);
+    this.notify();
+  }
+  // 按维度分组
+  groupByDimension(dim) {
+    const groups = {};
+    this.tasks.forEach(task => {
+      const key = task.dimensions && task.dimensions[dim] ? task.dimensions[dim].id : '未分组';
+      if (!groups[key]) groups[key] = { id: key, name: task.dimensions && task.dimensions[dim] ? task.dimensions[dim].name : '未分组', tasks: [] };
+      groups[key].tasks.push(task);
+    });
+    return Object.values(groups);
+  }
+  // 变更监听
+  onChange(cb) {
+    this.listeners.push(cb);
+  }
+  notify() {
+    this.listeners.forEach(cb => cb(this.tasks));
+  }
+}