feat: 新增任务管理功能及相关组件

- 将目标页面改为任务列表，支持任务的创建、完成和跳过功能
- 新增任务卡片和任务进度卡片组件，展示任务状态和进度
- 实现任务数据的获取和管理，集成Redux状态管理
- 更新API服务，支持任务相关的CRUD操作
- 编写任务管理功能实现文档，详细描述功能和组件架构

types/goals.ts

@@ -177,4 +177,76 @@ export interface GoalDetailResponse extends Goal {
 export interface GoalListItem extends Goal {
   progressPercentage: number;
   daysRemaining?: number;
+}
+
+// 任务相关类型定义
+
+export type TaskStatus = 'pending' | 'in_progress' | 'completed' | 'overdue' | 'skipped';
+
+// 任务数据结构
+export interface Task {
+  id: string;
+  goalId: string;
+  userId: string;
+  title: string;
+  description?: string;
+  startDate: string; // ISO date string
+  endDate: string; // ISO date string
+  targetCount: number;
+  currentCount: number;
+  status: TaskStatus;
+  progressPercentage: number;
+  completedAt?: string; // ISO datetime string
+  notes?: string;
+  metadata?: Record<string, any>;
+  daysRemaining: number;
+  isToday: boolean;
+  goal?: {
+    id: string;
+    title: string;
+    repeatType: RepeatType;
+    frequency: number;
+    category?: string;
+  };
+}
+
+// 获取任务列表的查询参数
+export interface GetTasksQuery {
+  goalId?: string;
+  status?: TaskStatus;
+  startDate?: string;
+  endDate?: string;
+  page?: number;
+  pageSize?: number;
+}
+
+// 完成任务的请求数据
+export interface CompleteTaskRequest {
+  count?: number;
+  notes?: string;
+  completedAt?: string;
+}
+
+// 跳过任务的请求数据
+export interface SkipTaskRequest {
+  reason?: string;
+}
+
+// 任务统计信息
+export interface TaskStats {
+  total: number;
+  pending: number;
+  inProgress: number;
+  completed: number;
+  overdue: number;
+  skipped: number;
+  totalProgress: number;
+  todayTasks: number;
+  weekTasks: number;
+  monthTasks: number;
+}
+
+// 任务列表项响应
+export interface TaskListItem extends Task {
+  // 继承Task的所有属性
 }