From 32294ebec133a7bfa432312d89409394777886e8 Mon Sep 17 00:00:00 2001
From: bluish <734499798@qq.com>
Date: Tue, 30 Dec 2025 09:03:29 +0000
Subject: [PATCH] init

---
 .gitignore                   |  10 +
 .python-version              |   1 +
 README.md                    | 200 +++++++++
 backend/.env                 |   8 +
 backend/ai_service.py        |  59 +++
 backend/app.py               |  39 ++
 backend/env_example.txt      |   8 +
 backend/instance/worklist.db | Bin 0 -> 12288 bytes
 backend/models.py            |  66 +++
 backend/requirements.txt     |   6 +
 backend/routes.py            | 408 ++++++++++++++++++
 frontend/css/style.css       | 814 +++++++++++++++++++++++++++++++++++
 frontend/index.html          | 229 ++++++++++
 frontend/js/api.js           | 115 +++++
 frontend/js/app.js           | 807 ++++++++++++++++++++++++++++++++++
 frontend/js/timer.js         | 268 ++++++++++++
 main.py                      |   6 +
 pyproject.toml               |   7 +
 start.py                     |  95 ++++
 19 files changed, 3146 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 .python-version
 create mode 100644 README.md
 create mode 100644 backend/.env
 create mode 100644 backend/ai_service.py
 create mode 100644 backend/app.py
 create mode 100644 backend/env_example.txt
 create mode 100644 backend/instance/worklist.db
 create mode 100644 backend/models.py
 create mode 100644 backend/requirements.txt
 create mode 100644 backend/routes.py
 create mode 100644 frontend/css/style.css
 create mode 100644 frontend/index.html
 create mode 100644 frontend/js/api.js
 create mode 100644 frontend/js/app.js
 create mode 100644 frontend/js/timer.js
 create mode 100644 main.py
 create mode 100644 pyproject.toml
 create mode 100644 start.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..505a3b1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+# Python-generated files
+__pycache__/
+*.py[oc]
+build/
+dist/
+wheels/
+*.egg-info
+
+# Virtual environments
+.venv
diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..6324d40
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.14
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7305a1c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,200 @@
+# 工作任务管理系统
+
+一个简单而强大的工作任务管理工具，帮助你记录每日工作任务和对应的时间投入。
+
+## 功能特性
+
+- ✅ **任务管理**: 添加、编辑、删除工作任务
+- ⏱️ **时间追踪**: 点击开始/停止计时，自动记录任务时长
+- 📊 **时间统计**: 查看每日、每周的工作时间统计
+- 🤖 **AI润色**: 使用AI优化任务描述，让工作记录更专业
+- 📱 **响应式设计**: 支持桌面和移动设备
+- 💾 **本地存储**: 数据存储在本地SQLite数据库中
+
+## 技术栈
+
+- **前端**: HTML5 + CSS3 + JavaScript (Vanilla JS)
+- **后端**: Python Flask
+- **数据库**: SQLite
+- **AI服务**: OpenAI API (可选)
+
+## 快速开始
+
+### 1. 环境要求
+
+- Python 3.7 或更高版本
+- 现代浏览器 (Chrome, Firefox, Safari, Edge)
+
+### 2. 安装和运行
+
+#### 方法一：使用启动脚本（推荐）
+
+```bash
+# 克隆或下载项目到本地
+cd worklist
+
+# 运行启动脚本
+python start.py
+```
+
+启动脚本会自动：
+- 检查Python版本
+- 安装所需依赖
+- 创建配置文件
+- 启动服务器
+- 自动打开浏览器
+
+#### 方法二：手动启动
+
+```bash
+# 1. 安装Python依赖
+pip install -r backend/requirements.txt
+
+# 2. 启动服务器
+cd backend
+python app.py
+
+# 3. 在浏览器中访问
+# http://localhost:5000
+```
+
+### 3. 配置AI润色功能（可选）
+
+如需使用AI润色功能，请：
+
+1. 获取OpenAI API密钥
+2. 编辑 `backend/.env` 文件
+3. 设置 `OPENAI_API_KEY=your_api_key_here`
+
+## 使用指南
+
+### 基本操作
+
+1. **添加任务**
+   - 点击"添加任务"按钮
+   - 填写任务标题和描述
+   - 选择任务状态
+   - 点击"保存"
+
+2. **时间追踪**
+   - 在任务列表中点击"开始"按钮开始计时
+   - 点击"停止"按钮结束计时
+   - 系统自动记录和累计任务时长
+
+3. **查看统计**
+   - 点击"查看报表"按钮
+   - 选择日期查看当日工作统计
+   - 查看各任务的时间投入
+
+4. **AI润色**
+   - 在编辑任务时，点击"AI润色"按钮
+   - 系统会优化任务描述
+   - 可选择使用润色版本或保持原版
+
+### 界面说明
+
+- **任务列表**: 显示所有任务，包括状态、时长等信息
+- **统计面板**: 显示今日总工作时长、完成任务数等
+- **计时器**: 实时显示当前任务计时或总时长
+- **报表**: 详细的每日工作时间统计
+
+## 项目结构
+
+```
+worklist/
+├── backend/                 # 后端代码
+│   ├── app.py              # Flask主应用
+│   ├── models.py           # 数据库模型
+│   ├── routes.py           # API路由
+│   ├── ai_service.py       # AI服务
+│   ├── requirements.txt    # Python依赖
+│   └── .env               # 环境变量配置
+├── frontend/               # 前端代码
+│   ├── index.html         # 主页面
+│   ├── css/
+│   │   └── style.css      # 样式文件
+│   └── js/
+│       ├── app.js         # 主应用逻辑
+│       ├── api.js         # API调用
+│       └── timer.js       # 计时器功能
+├── start.py               # 启动脚本
+└── README.md             # 说明文档
+```
+
+## API接口
+
+### 任务管理
+- `GET /api/tasks` - 获取任务列表
+- `POST /api/tasks` - 创建任务
+- `PUT /api/tasks/:id` - 更新任务
+- `DELETE /api/tasks/:id` - 删除任务
+- `POST /api/tasks/:id/polish` - AI润色任务描述
+
+### 时间追踪
+- `POST /api/timer/start` - 开始计时
+- `POST /api/timer/stop` - 停止计时
+- `GET /api/timer/status/:id` - 获取计时状态
+
+### 统计报表
+- `GET /api/reports/daily` - 获取日报表
+- `GET /api/reports/summary` - 获取汇总报表
+
+## 数据模型
+
+### 任务 (Task)
+- `id`: 任务ID
+- `title`: 任务标题
+- `description`: 任务描述
+- `polished_description`: AI润色后的描述
+- `status`: 任务状态 (pending/in_progress/completed)
+- `created_at`: 创建时间
+- `updated_at`: 更新时间
+
+### 时间记录 (TimeRecord)
+- `id`: 记录ID
+- `task_id`: 关联的任务ID
+- `start_time`: 开始时间
+- `end_time`: 结束时间
+- `duration`: 时长（秒）
+- `created_at`: 创建时间
+
+## 常见问题
+
+### Q: 如何备份数据？
+A: 数据库文件位于 `backend/worklist.db`，直接复制此文件即可备份。
+
+### Q: 可以多人使用吗？
+A: 当前版本为单用户设计，如需多用户支持需要进一步开发。
+
+### Q: AI润色功能需要付费吗？
+A: 需要OpenAI API密钥，按使用量计费，具体费用请查看OpenAI官网。
+
+### Q: 支持数据导出吗？
+A: 当前版本暂不支持，但可以通过API获取数据，后续版本会添加导出功能。
+
+## 开发说明
+
+### 本地开发
+
+1. 克隆项目
+2. 安装依赖: `pip install -r backend/requirements.txt`
+3. 启动开发服务器: `cd backend && python app.py`
+4. 访问: `http://localhost:5000`
+
+### 添加新功能
+
+1. 后端: 在 `routes.py` 中添加新的API端点
+2. 前端: 在相应的JS文件中添加功能逻辑
+3. 数据库: 如需新表，在 `models.py` 中定义
+
+## 许可证
+
+MIT License
+
+## 贡献
+
+欢迎提交Issue和Pull Request！
+
+---
+
+**开始使用**: 运行 `python start.py` 即可开始使用！
diff --git a/backend/.env b/backend/.env
new file mode 100644
index 0000000..23ea3f9
--- /dev/null
+++ b/backend/.env
@@ -0,0 +1,8 @@
+# OpenAI API配置（可选，用于AI润色功能）
+OPENAI_API_KEY=your_openai_api_key_here
+
+# 数据库配置
+DATABASE_URL=sqlite:///worklist.db
+
+# Flask配置
+SECRET_KEY=your-secret-key-here
diff --git a/backend/ai_service.py b/backend/ai_service.py
new file mode 100644
index 0000000..1c06ebe
--- /dev/null
+++ b/backend/ai_service.py
@@ -0,0 +1,59 @@
+import openai
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+class AIService:
+    def __init__(self):
+        # 设置OpenAI API密钥
+        self.api_key = os.getenv('OPENAI_API_KEY')
+        # 延迟初始化客户端，避免在没有API密钥时出错
+        self.client = None
+    
+    def polish_description(self, description):
+        """
+        使用AI润色任务描述
+        """
+        if not description or not description.strip():
+            return description
+        
+        # 检查API密钥
+        if not self.api_key or self.api_key == 'your_openai_api_key_here':
+            print("AI润色功能需要配置OpenAI API密钥")
+            return description
+        
+        try:
+            # 使用旧版本OpenAI API
+            openai.api_key = self.api_key
+            
+            response = openai.ChatCompletion.create(
+                model="gpt-3.5-turbo",
+                messages=[
+                    {
+                        "role": "system", 
+                        "content": "你是一个专业的工作任务描述润色助手。请将用户提供的工作任务描述润色得更加专业、清晰、具体。保持原意不变，但让描述更加规范和易于理解。"
+                    },
+                    {
+                        "role": "user", 
+                        "content": f"请润色以下工作任务描述：\n\n{description}"
+                    }
+                ],
+                max_tokens=500,
+                temperature=0.7
+            )
+            
+            polished = response.choices[0].message.content.strip()
+            return polished
+            
+        except Exception as e:
+            print(f"AI润色失败: {e}")
+            # 如果AI服务失败，返回原始描述
+            return description
+    
+    def is_available(self):
+        """检查AI服务是否可用"""
+        return bool(self.api_key and self.api_key != 'your_openai_api_key_here')
+
+# 创建全局AI服务实例
+ai_service = AIService()
diff --git a/backend/app.py b/backend/app.py
new file mode 100644
index 0000000..203daec
--- /dev/null
+++ b/backend/app.py
@@ -0,0 +1,39 @@
+from flask import Flask, send_from_directory
+from flask_cors import CORS
+from models import db, Task, TimeRecord
+from routes import api
+import os
+
+def create_app():
+    app = Flask(__name__)
+    
+    # 配置
+    app.config['SECRET_KEY'] = 'your-secret-key-here'
+    app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///worklist.db'
+    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+    
+    # 初始化扩展
+    db.init_app(app)
+    CORS(app)  # 允许跨域请求
+    
+    # 注册蓝图
+    app.register_blueprint(api, url_prefix='/api')
+    
+    # 创建数据库表
+    with app.app_context():
+        db.create_all()
+    
+    # 静态文件服务（用于前端）
+    @app.route('/')
+    def index():
+        return send_from_directory('../frontend', 'index.html')
+    
+    @app.route('/<path:filename>')
+    def static_files(filename):
+        return send_from_directory('../frontend', filename)
+    
+    return app
+
+if __name__ == '__main__':
+    app = create_app()
+    app.run(debug=True, host='0.0.0.0', port=5000)
diff --git a/backend/env_example.txt b/backend/env_example.txt
new file mode 100644
index 0000000..da56282
--- /dev/null
+++ b/backend/env_example.txt
@@ -0,0 +1,8 @@
+# OpenAI API配置
+OPENAI_API_KEY=your_openai_api_key_here
+
+# 数据库配置
+DATABASE_URL=sqlite:///worklist.db
+
+# Flask配置
+SECRET_KEY=your-secret-key-here
diff --git a/backend/instance/worklist.db b/backend/instance/worklist.db
new file mode 100644
index 0000000000000000000000000000000000000000..7a91b1428f4f7138f7e9ecded9cc0b9d13d82ba2
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diff --git a/backend/models.py b/backend/models.py
new file mode 100644
index 0000000..a12f199
--- /dev/null
+++ b/backend/models.py
@@ -0,0 +1,66 @@
+from flask_sqlalchemy import SQLAlchemy
+from datetime import datetime
+from sqlalchemy import func
+
+db = SQLAlchemy()
+
+class Task(db.Model):
+    """任务模型"""
+    __tablename__ = 'tasks'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    title = db.Column(db.String(200), nullable=False)
+    description = db.Column(db.Text)
+    polished_description = db.Column(db.Text)  # AI润色后的描述
+    status = db.Column(db.String(20), default='pending')  # pending, in_progress, completed
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    # 关联关系
+    time_records = db.relationship('TimeRecord', backref='task', lazy=True, cascade='all, delete-orphan')
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'title': self.title,
+            'description': self.description,
+            'polished_description': self.polished_description,
+            'status': self.status,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+            'updated_at': self.updated_at.isoformat() if self.updated_at else None,
+            'total_time': self.get_total_time()
+        }
+    
+    def get_total_time(self):
+        """获取任务总时长（秒）"""
+        total_seconds = db.session.query(func.sum(TimeRecord.duration)).filter(
+            TimeRecord.task_id == self.id
+        ).scalar() or 0
+        return int(total_seconds)
+
+class TimeRecord(db.Model):
+    """时间记录模型"""
+    __tablename__ = 'time_records'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    task_id = db.Column(db.Integer, db.ForeignKey('tasks.id'), nullable=False)
+    start_time = db.Column(db.DateTime, nullable=False)
+    end_time = db.Column(db.DateTime)
+    duration = db.Column(db.Integer)  # 时长（秒）
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'task_id': self.task_id,
+            'start_time': self.start_time.isoformat() if self.start_time else None,
+            'end_time': self.end_time.isoformat() if self.end_time else None,
+            'duration': self.duration,
+            'created_at': self.created_at.isoformat() if self.created_at else None
+        }
+    
+    def calculate_duration(self):
+        """计算时长"""
+        if self.start_time and self.end_time:
+            self.duration = int((self.end_time - self.start_time).total_seconds())
+        return self.duration
diff --git a/backend/requirements.txt b/backend/requirements.txt
new file mode 100644
index 0000000..8700260
--- /dev/null
+++ b/backend/requirements.txt
@@ -0,0 +1,6 @@
+Flask==2.3.3
+Flask-CORS==4.0.0
+SQLAlchemy==2.0.21
+Flask-SQLAlchemy==3.0.5
+python-dotenv==1.0.0
+openai==0.28.1
diff --git a/backend/routes.py b/backend/routes.py
new file mode 100644
index 0000000..580e90f
--- /dev/null
+++ b/backend/routes.py
@@ -0,0 +1,408 @@
+from flask import Blueprint, request, jsonify
+from datetime import datetime, timedelta
+from models import db, Task, TimeRecord
+from ai_service import ai_service
+import json
+
+api = Blueprint('api', __name__)
+
+# 任务管理API
+@api.route('/tasks', methods=['GET'])
+def get_tasks():
+    """获取所有任务"""
+    tasks = Task.query.order_by(Task.created_at.desc()).all()
+    return jsonify([task.to_dict() for task in tasks])
+
+@api.route('/tasks', methods=['POST'])
+def create_task():
+    """创建新任务"""
+    data = request.get_json()
+    
+    if not data or 'title' not in data:
+        return jsonify({'error': '任务标题不能为空'}), 400
+    
+    task = Task(
+        title=data['title'],
+        description=data.get('description', ''),
+        status=data.get('status', 'pending')
+    )
+    
+    db.session.add(task)
+    db.session.commit()
+    
+    return jsonify(task.to_dict()), 201
+
+@api.route('/tasks/<int:task_id>', methods=['PUT'])
+def update_task(task_id):
+    """更新任务"""
+    task = Task.query.get_or_404(task_id)
+    data = request.get_json()
+    
+    if 'title' in data:
+        task.title = data['title']
+    if 'description' in data:
+        task.description = data['description']
+    if 'status' in data:
+        task.status = data['status']
+    
+    task.updated_at = datetime.utcnow()
+    db.session.commit()
+    
+    return jsonify(task.to_dict())
+
+@api.route('/tasks/<int:task_id>', methods=['DELETE'])
+def delete_task(task_id):
+    """删除任务"""
+    task = Task.query.get_or_404(task_id)
+    db.session.delete(task)
+    db.session.commit()
+    
+    return jsonify({'message': '任务删除成功'})
+
+@api.route('/tasks/<int:task_id>/polish', methods=['POST'])
+def polish_task_description(task_id):
+    """AI润色任务描述"""
+    task = Task.query.get_or_404(task_id)
+    
+    if not ai_service.is_available():
+        return jsonify({'error': 'AI服务不可用，请检查API密钥配置'}), 500
+    
+    if not task.description:
+        return jsonify({'error': '任务描述为空，无法润色'}), 400
+    
+    polished_description = ai_service.polish_description(task.description)
+    task.polished_description = polished_description
+    task.updated_at = datetime.utcnow()
+    
+    db.session.commit()
+    
+    return jsonify({
+        'original': task.description,
+        'polished': polished_description
+    })
+
+# 计时器API
+@api.route('/timer/start', methods=['POST'])
+def start_timer():
+    """开始计时"""
+    data = request.get_json()
+    task_id = data.get('task_id')
+    
+    if not task_id:
+        return jsonify({'error': '任务ID不能为空'}), 400
+    
+    task = Task.query.get_or_404(task_id)
+    
+    # 检查是否已有进行中的计时
+    active_record = TimeRecord.query.filter_by(
+        task_id=task_id, 
+        end_time=None
+    ).first()
+    
+    if active_record:
+        return jsonify({'error': '该任务已在计时中'}), 400
+    
+    # 创建新的时间记录
+    time_record = TimeRecord(
+        task_id=task_id,
+        start_time=datetime.utcnow()
+    )
+    
+    db.session.add(time_record)
+    task.status = 'in_progress'
+    db.session.commit()
+    
+    return jsonify(time_record.to_dict())
+
+@api.route('/timer/stop', methods=['POST'])
+def stop_timer():
+    """停止计时"""
+    data = request.get_json()
+    task_id = data.get('task_id')
+    
+    if not task_id:
+        return jsonify({'error': '任务ID不能为空'}), 400
+    
+    # 查找进行中的时间记录
+    time_record = TimeRecord.query.filter_by(
+        task_id=task_id, 
+        end_time=None
+    ).first()
+    
+    if not time_record:
+        return jsonify({'error': '没有找到进行中的计时'}), 400
+    
+    # 结束计时
+    time_record.end_time = datetime.utcnow()
+    time_record.calculate_duration()
+    
+    # 更新任务状态
+    task = Task.query.get(task_id)
+    if task:
+        task.status = 'pending'  # 或者根据业务逻辑设置其他状态
+    
+    db.session.commit()
+    
+    return jsonify(time_record.to_dict())
+
+@api.route('/timer/status/<int:task_id>', methods=['GET'])
+def get_timer_status(task_id):
+    """获取任务计时状态"""
+    active_record = TimeRecord.query.filter_by(
+        task_id=task_id, 
+        end_time=None
+    ).first()
+    
+    if active_record:
+        return jsonify({
+            'is_running': True,
+            'start_time': active_record.start_time.isoformat(),
+            'duration': int((datetime.utcnow() - active_record.start_time).total_seconds())
+        })
+    else:
+        return jsonify({'is_running': False})
+
+@api.route('/timer/status/batch', methods=['POST'])
+def get_timer_status_batch():
+    """批量获取任务计时状态"""
+    data = request.get_json() or {}
+    task_ids = data.get('task_ids', [])
+
+    if not isinstance(task_ids, list) or not task_ids:
+        return jsonify({'error': '任务ID列表不能为空'}), 400
+
+    # 初始化默认状态
+    statuses = {int(task_id): {'is_running': False} for task_id in task_ids}
+
+    active_records = TimeRecord.query.filter(
+        TimeRecord.task_id.in_(task_ids),
+        TimeRecord.end_time.is_(None)
+    ).all()
+
+    now = datetime.utcnow()
+    for record in active_records:
+        statuses[record.task_id] = {
+            'is_running': True,
+            'start_time': record.start_time.isoformat(),
+            'duration': int((now - record.start_time).total_seconds())
+        }
+
+    return jsonify(statuses)
+# 统计报表API
+@api.route('/reports/daily', methods=['GET'])
+def get_daily_report():
+    """获取日报表"""
+    date_str = request.args.get('date')
+    if date_str:
+        try:
+            target_date = datetime.strptime(date_str, '%Y-%m-%d').date()
+        except ValueError:
+            return jsonify({'error': '日期格式错误，请使用YYYY-MM-DD格式'}), 400
+    else:
+        target_date = datetime.now().date()
+    
+    # 获取指定日期的所有时间记录
+    start_datetime = datetime.combine(target_date, datetime.min.time())
+    end_datetime = datetime.combine(target_date, datetime.max.time())
+    
+    records = TimeRecord.query.filter(
+        TimeRecord.start_time >= start_datetime,
+        TimeRecord.start_time <= end_datetime,
+        TimeRecord.end_time.isnot(None)
+    ).all()
+    
+    # 按任务分组统计
+    task_stats = {}
+    total_time = 0
+    
+    for record in records:
+        task_id = record.task_id
+        if task_id not in task_stats:
+            task = Task.query.get(task_id)
+            task_stats[task_id] = {
+                'task': task.to_dict() if task else None,
+                'total_duration': 0,
+                'records': []
+            }
+        
+        task_stats[task_id]['total_duration'] += record.duration or 0
+        task_stats[task_id]['records'].append(record.to_dict())
+        total_time += record.duration or 0
+    
+    return jsonify({
+        'date': target_date.isoformat(),
+        'total_time': total_time,
+        'task_stats': list(task_stats.values())
+    })
+
+@api.route('/reports/summary', methods=['GET'])
+def get_summary_report():
+    """获取汇总报表"""
+    days = int(request.args.get('days', 7))  # 默认最近7天
+    
+    end_date = datetime.now().date()
+    start_date = end_date - timedelta(days=days-1)
+    
+    start_datetime = datetime.combine(start_date, datetime.min.time())
+    end_datetime = datetime.combine(end_date, datetime.max.time())
+    
+    # 获取时间范围内的记录
+    records = TimeRecord.query.filter(
+        TimeRecord.start_time >= start_datetime,
+        TimeRecord.start_time <= end_datetime,
+        TimeRecord.end_time.isnot(None)
+    ).all()
+    
+    # 按日期分组
+    daily_stats = {}
+    for record in records:
+        date_key = record.start_time.date().isoformat()
+        if date_key not in daily_stats:
+            daily_stats[date_key] = {
+                'date': date_key,
+                'total_time': 0,
+                'tasks': {}
+            }
+        
+        task_id = record.task_id
+        if task_id not in daily_stats[date_key]['tasks']:
+            task = Task.query.get(task_id)
+            daily_stats[date_key]['tasks'][task_id] = {
+                'task_title': task.title if task else f'任务{task_id}',
+                'total_time': 0
+            }
+        
+        duration = record.duration or 0
+        daily_stats[date_key]['total_time'] += duration
+        daily_stats[date_key]['tasks'][task_id]['total_time'] += duration
+    
+    return jsonify({
+        'period': f'{start_date.isoformat()} 至 {end_date.isoformat()}',
+        'daily_stats': list(daily_stats.values())
+    })
+
+# 时间段历史API
+@api.route('/tasks/<int:task_id>/time-history', methods=['GET'])
+def get_task_time_history(task_id):
+    """获取任务的时间段历史"""
+    task = Task.query.get_or_404(task_id)
+    
+    # 获取参数
+    days = int(request.args.get('days', 30))  # 默认最近30天
+    page = int(request.args.get('page', 1))
+    per_page = int(request.args.get('per_page', 20))
+    
+    # 计算日期范围
+    end_date = datetime.now().date()
+    start_date = end_date - timedelta(days=days-1)
+    
+    start_datetime = datetime.combine(start_date, datetime.min.time())
+    end_datetime = datetime.combine(end_date, datetime.max.time())
+    
+    # 查询时间记录
+    query = TimeRecord.query.filter(
+        TimeRecord.task_id == task_id,
+        TimeRecord.start_time >= start_datetime,
+        TimeRecord.start_time <= end_datetime,
+        TimeRecord.end_time.isnot(None)
+    ).order_by(TimeRecord.start_time.desc())
+    
+    # 分页
+    pagination = query.paginate(
+        page=page, 
+        per_page=per_page, 
+        error_out=False
+    )
+    
+    # 按日期分组
+    daily_segments = {}
+    for record in pagination.items:
+        date_key = record.start_time.date().isoformat()
+        if date_key not in daily_segments:
+            daily_segments[date_key] = {
+                'date': date_key,
+                'total_duration': 0,
+                'segments': []
+            }
+        
+        daily_segments[date_key]['total_duration'] += record.duration or 0
+        daily_segments[date_key]['segments'].append(record.to_dict())
+    
+    return jsonify({
+        'task': task.to_dict(),
+        'period': f'{start_date.isoformat()} 至 {end_date.isoformat()}',
+        'daily_segments': list(daily_segments.values()),
+        'pagination': {
+            'page': pagination.page,
+            'pages': pagination.pages,
+            'per_page': pagination.per_page,
+            'total': pagination.total,
+            'has_next': pagination.has_next,
+            'has_prev': pagination.has_prev
+        }
+    })
+
+@api.route('/time-history', methods=['GET'])
+def get_all_time_history():
+    """获取所有任务的时间段历史"""
+    # 获取参数
+    days = int(request.args.get('days', 7))  # 默认最近7天
+    task_id = request.args.get('task_id')  # 可选的任务ID过滤
+    
+    # 计算日期范围
+    end_date = datetime.now().date()
+    start_date = end_date - timedelta(days=days-1)
+    
+    start_datetime = datetime.combine(start_date, datetime.min.time())
+    end_datetime = datetime.combine(end_date, datetime.max.time())
+    
+    # 构建查询
+    query = TimeRecord.query.filter(
+        TimeRecord.start_time >= start_datetime,
+        TimeRecord.start_time <= end_datetime,
+        TimeRecord.end_time.isnot(None)
+    )
+    
+    if task_id:
+        query = query.filter(TimeRecord.task_id == task_id)
+    
+    # 按开始时间排序
+    records = query.order_by(TimeRecord.start_time.desc()).all()
+    
+    # 按日期和任务分组
+    daily_tasks = {}
+    for record in records:
+        date_key = record.start_time.date().isoformat()
+        task_id = record.task_id
+        
+        if date_key not in daily_tasks:
+            daily_tasks[date_key] = {}
+        
+        if task_id not in daily_tasks[date_key]:
+            task = Task.query.get(task_id)
+            daily_tasks[date_key][task_id] = {
+                'task': task.to_dict() if task else None,
+                'total_duration': 0,
+                'segments': []
+            }
+        
+        daily_tasks[date_key][task_id]['total_duration'] += record.duration or 0
+        daily_tasks[date_key][task_id]['segments'].append(record.to_dict())
+    
+    # 转换为列表格式
+    result = []
+    for date, tasks in daily_tasks.items():
+        day_data = {
+            'date': date,
+            'total_time': sum(task['total_duration'] for task in tasks.values()),
+            'tasks': list(tasks.values())
+        }
+        result.append(day_data)
+    
+    # 按日期排序（最新的在前）
+    result.sort(key=lambda x: x['date'], reverse=True)
+    
+    return jsonify({
+        'period': f'{start_date.isoformat()} 至 {end_date.isoformat()}',
+        'daily_tasks': result
+    })
diff --git a/frontend/css/style.css b/frontend/css/style.css
new file mode 100644
index 0000000..a607be3
--- /dev/null
+++ b/frontend/css/style.css
@@ -0,0 +1,814 @@
+/* 全局样式 */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    min-height: 100vh;
+    color: #333;
+}
+
+.container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 20px;
+}
+
+/* 头部样式 */
+.header {
+    background: rgba(255, 255, 255, 0.95);
+    backdrop-filter: blur(10px);
+    border-radius: 15px;
+    padding: 20px 30px;
+    margin-bottom: 30px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 20px;
+}
+
+.header h1 {
+    color: #4a5568;
+    font-size: 2rem;
+    font-weight: 700;
+}
+
+.header h1 i {
+    color: #667eea;
+    margin-right: 10px;
+}
+
+.header-actions {
+    display: flex;
+    gap: 15px;
+    flex-wrap: wrap;
+}
+
+/* 按钮样式 */
+.btn {
+    padding: 12px 24px;
+    border: none;
+    border-radius: 8px;
+    font-size: 14px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    text-decoration: none;
+}
+
+.btn-primary {
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    color: white;
+}
+
+.btn-primary:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
+}
+
+.btn-secondary {
+    background: #f7fafc;
+    color: #4a5568;
+    border: 2px solid #e2e8f0;
+}
+
+.btn-secondary:hover {
+    background: #edf2f7;
+    border-color: #cbd5e0;
+}
+
+.btn-outline {
+    background: transparent;
+    color: #667eea;
+    border: 2px solid #667eea;
+}
+
+.btn-outline:hover {
+    background: #667eea;
+    color: white;
+}
+
+.btn-success {
+    background: #48bb78;
+    color: white;
+}
+
+.btn-success:hover {
+    background: #38a169;
+}
+
+.btn-danger {
+    background: #f56565;
+    color: white;
+}
+
+.btn-danger:hover {
+    background: #e53e3e;
+}
+
+.btn-sm {
+    padding: 8px 16px;
+    font-size: 12px;
+}
+
+/* 主要内容区域 */
+.main-content {
+    display: grid;
+    grid-template-columns: 1fr 300px;
+    gap: 30px;
+    align-items: start;
+}
+
+/* 任务区域 */
+.task-section {
+    background: rgba(255, 255, 255, 0.95);
+    backdrop-filter: blur(10px);
+    border-radius: 15px;
+    padding: 30px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+}
+
+.task-section h2 {
+    color: #4a5568;
+    margin-bottom: 25px;
+    font-size: 1.5rem;
+}
+
+.task-filters {
+    display: flex;
+    gap: 10px;
+    margin-bottom: 20px;
+    flex-wrap: wrap;
+}
+
+.task-exclusions {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    margin-bottom: 25px;
+    flex-wrap: wrap;
+    padding: 12px 16px;
+    background: rgba(103, 126, 234, 0.08);
+    border-radius: 10px;
+}
+
+.exclusion-label {
+    color: #4a5568;
+    font-weight: 600;
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+}
+
+.filter-btn {
+    min-width: 90px;
+}
+
+.filter-btn.active {
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    color: #ffffff;
+    border-color: transparent;
+    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.35);
+}
+
+.exclusion-btn {
+    min-width: 80px;
+    border-color: #cbd5e0;
+    color: #4a5568;
+}
+
+.exclusion-btn.active {
+    background: #f56565;
+    border-color: #f56565;
+    color: #ffffff;
+    box-shadow: 0 6px 20px rgba(245, 101, 101, 0.3);
+}
+
+.task-list {
+    display: flex;
+    flex-direction: column;
+    gap: 15px;
+}
+
+/* 任务项样式 */
+.task-item {
+    background: #f8fafc;
+    border: 2px solid #e2e8f0;
+    border-radius: 12px;
+    padding: 20px;
+    transition: all 0.3s ease;
+    position: relative;
+}
+
+.task-item:hover {
+    border-color: #667eea;
+    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.1);
+}
+
+.task-item.in-progress {
+    border-color: #48bb78;
+    background: linear-gradient(135deg, #f0fff4 0%, #e6fffa 100%);
+}
+
+.task-item.completed {
+    border-color: #a0aec0;
+    background: #f7fafc;
+    opacity: 0.8;
+}
+
+.task-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: flex-start;
+    margin-bottom: 15px;
+}
+
+.task-title {
+    font-size: 1.2rem;
+    font-weight: 600;
+    color: #2d3748;
+    margin-bottom: 5px;
+}
+
+.task-status {
+    padding: 4px 12px;
+    border-radius: 20px;
+    font-size: 12px;
+    font-weight: 600;
+    text-transform: uppercase;
+}
+
+.task-status.pending {
+    background: #fed7d7;
+    color: #c53030;
+}
+
+.task-status.in-progress {
+    background: #c6f6d5;
+    color: #2f855a;
+}
+
+.task-status.completed {
+    background: #e2e8f0;
+    color: #4a5568;
+}
+
+.task-description {
+    color: #718096;
+    line-height: 1.6;
+    margin-bottom: 15px;
+}
+
+.task-description.polished {
+    background: #f0f9ff;
+    padding: 10px;
+    border-radius: 8px;
+    border-left: 4px solid #667eea;
+}
+
+.task-actions {
+    display: flex;
+    gap: 10px;
+    flex-wrap: wrap;
+}
+
+.task-timer {
+    display: flex;
+    align-items: center;
+    gap: 15px;
+    margin-top: 15px;
+    padding-top: 15px;
+    border-top: 1px solid #e2e8f0;
+}
+
+.timer-display {
+    font-family: 'Courier New', monospace;
+    font-size: 1.5rem;
+    font-weight: bold;
+    color: #2d3748;
+    background: #f7fafc;
+    padding: 8px 16px;
+    border-radius: 8px;
+    border: 2px solid #e2e8f0;
+}
+
+.timer-controls {
+    display: flex;
+    gap: 8px;
+}
+
+.task-stats {
+    display: flex;
+    gap: 20px;
+    margin-top: 10px;
+    font-size: 14px;
+    color: #718096;
+}
+
+.stat-item {
+    display: flex;
+    align-items: center;
+    gap: 5px;
+}
+
+/* 统计面板 */
+.stats-panel {
+    background: rgba(255, 255, 255, 0.95);
+    backdrop-filter: blur(10px);
+    border-radius: 15px;
+    padding: 25px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+    position: sticky;
+    top: 20px;
+}
+
+.stats-panel h3 {
+    color: #4a5568;
+    margin-bottom: 20px;
+    font-size: 1.3rem;
+}
+
+.stats-card {
+    display: flex;
+    flex-direction: column;
+    gap: 15px;
+}
+
+.stat-item {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 12px 0;
+    border-bottom: 1px solid #e2e8f0;
+}
+
+.stat-item:last-child {
+    border-bottom: none;
+}
+
+.stat-label {
+    color: #718096;
+    font-size: 14px;
+}
+
+.stat-value {
+    font-size: 1.2rem;
+    font-weight: 700;
+    color: #2d3748;
+}
+
+/* 模态框样式 */
+.modal {
+    display: none;
+    position: fixed;
+    z-index: 1000;
+    left: 0;
+    top: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.5);
+    backdrop-filter: blur(5px);
+}
+
+.modal-content {
+    background: white;
+    margin: 5% auto;
+    padding: 0;
+    border-radius: 15px;
+    width: 90%;
+    max-width: 600px;
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
+    animation: modalSlideIn 0.3s ease;
+}
+
+.modal-content.large {
+    max-width: 800px;
+}
+
+@keyframes modalSlideIn {
+    from {
+        opacity: 0;
+        transform: translateY(-50px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.modal-header {
+    padding: 25px 30px;
+    border-bottom: 1px solid #e2e8f0;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.modal-header h3 {
+    color: #2d3748;
+    font-size: 1.5rem;
+}
+
+.close {
+    color: #a0aec0;
+    font-size: 28px;
+    font-weight: bold;
+    cursor: pointer;
+    transition: color 0.3s ease;
+}
+
+.close:hover {
+    color: #4a5568;
+}
+
+.modal-body {
+    padding: 30px;
+}
+
+.modal-footer {
+    padding: 20px 30px;
+    border-top: 1px solid #e2e8f0;
+    display: flex;
+    justify-content: flex-end;
+    gap: 15px;
+}
+
+/* 表单样式 */
+.form-group {
+    margin-bottom: 20px;
+}
+
+.form-group label {
+    display: block;
+    margin-bottom: 8px;
+    color: #4a5568;
+    font-weight: 600;
+}
+
+.form-group input,
+.form-group textarea,
+.form-group select {
+    width: 100%;
+    padding: 12px 16px;
+    border: 2px solid #e2e8f0;
+    border-radius: 8px;
+    font-size: 14px;
+    transition: border-color 0.3s ease;
+}
+
+.form-group input:focus,
+.form-group textarea:focus,
+.form-group select:focus {
+    outline: none;
+    border-color: #667eea;
+    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
+}
+
+.form-group textarea {
+    resize: vertical;
+    min-height: 100px;
+}
+
+.form-actions {
+    margin-top: 10px;
+}
+
+.polished-content {
+    margin-top: 15px;
+    padding: 15px;
+    background: #f0f9ff;
+    border-radius: 8px;
+    border: 1px solid #bee3f8;
+}
+
+.polished-content h4 {
+    color: #2b6cb0;
+    margin-bottom: 10px;
+    font-size: 14px;
+}
+
+.polished-text {
+    color: #2d3748;
+    line-height: 1.6;
+    margin-bottom: 15px;
+    padding: 10px;
+    background: white;
+    border-radius: 6px;
+    border: 1px solid #e2e8f0;
+}
+
+.polished-actions {
+    display: flex;
+    gap: 10px;
+}
+
+/* 报表样式 */
+.report-controls {
+    display: flex;
+    gap: 15px;
+    align-items: end;
+    margin-bottom: 25px;
+    padding: 20px;
+    background: #f8fafc;
+    border-radius: 8px;
+}
+
+/* 历史记录样式 */
+.history-controls {
+    display: flex;
+    gap: 15px;
+    align-items: end;
+    margin-bottom: 25px;
+    padding: 20px;
+    background: #f8fafc;
+    border-radius: 8px;
+    flex-wrap: wrap;
+}
+
+.history-content {
+    max-height: 600px;
+    overflow-y: auto;
+}
+
+.history-day {
+    margin-bottom: 25px;
+    padding: 20px;
+    background: #f8fafc;
+    border-radius: 8px;
+    border-left: 4px solid #667eea;
+}
+
+.history-day h4 {
+    color: #2d3748;
+    margin-bottom: 15px;
+    font-size: 1.1rem;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.day-total-time {
+    color: #667eea;
+    font-weight: 600;
+    font-family: 'Courier New', monospace;
+}
+
+.history-task {
+    margin-bottom: 20px;
+    padding: 15px;
+    background: white;
+    border-radius: 8px;
+    border: 1px solid #e2e8f0;
+}
+
+.history-task-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 15px;
+    padding-bottom: 10px;
+    border-bottom: 1px solid #e2e8f0;
+}
+
+.history-task-title {
+    color: #2d3748;
+    font-weight: 600;
+    font-size: 1.1rem;
+}
+
+.history-task-total {
+    color: #667eea;
+    font-weight: 600;
+    font-family: 'Courier New', monospace;
+}
+
+.time-segments {
+    display: flex;
+    flex-direction: column;
+    gap: 10px;
+}
+
+.time-segment {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 10px 15px;
+    background: #f7fafc;
+    border-radius: 6px;
+    border: 1px solid #e2e8f0;
+    transition: all 0.2s ease;
+}
+
+.time-segment:hover {
+    background: #edf2f7;
+    border-color: #cbd5e0;
+}
+
+.segment-time {
+    display: flex;
+    flex-direction: column;
+    align-items: flex-end;
+    gap: 4px;
+}
+
+.segment-duration {
+    color: #667eea;
+    font-weight: 600;
+    font-family: 'Courier New', monospace;
+    font-size: 1.1rem;
+}
+
+.segment-period {
+    color: #718096;
+    font-size: 0.9rem;
+}
+
+.segment-timespan {
+    color: #4a5568;
+    font-size: 0.9rem;
+}
+
+/* 空状态样式 */
+.history-empty {
+    text-align: center;
+    padding: 60px 20px;
+    color: #a0aec0;
+}
+
+.history-empty i {
+    font-size: 3rem;
+    margin-bottom: 15px;
+    display: block;
+}
+
+.history-empty h3 {
+    font-size: 1.3rem;
+    margin-bottom: 10px;
+}
+
+.history-empty p {
+    font-size: 1rem;
+}
+
+.report-content {
+    max-height: 500px;
+    overflow-y: auto;
+}
+
+.report-day {
+    margin-bottom: 25px;
+    padding: 20px;
+    background: #f8fafc;
+    border-radius: 8px;
+    border-left: 4px solid #667eea;
+}
+
+.report-day h4 {
+    color: #2d3748;
+    margin-bottom: 15px;
+    font-size: 1.1rem;
+}
+
+.report-task {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 10px 0;
+    border-bottom: 1px solid #e2e8f0;
+}
+
+.report-task:last-child {
+    border-bottom: none;
+}
+
+.report-task-title {
+    color: #4a5568;
+    font-weight: 500;
+}
+
+.report-task-time {
+    color: #667eea;
+    font-weight: 600;
+    font-family: 'Courier New', monospace;
+}
+
+/* 加载提示 */
+.loading-overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(255, 255, 255, 0.9);
+    backdrop-filter: blur(5px);
+    z-index: 2000;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+}
+
+.loading-spinner {
+    text-align: center;
+    color: #667eea;
+}
+
+.loading-spinner i {
+    font-size: 2rem;
+    margin-bottom: 15px;
+    display: block;
+}
+
+.loading-spinner span {
+    font-size: 1.1rem;
+    font-weight: 600;
+}
+
+/* 响应式设计 */
+@media (max-width: 768px) {
+    .main-content {
+        grid-template-columns: 1fr;
+    }
+    
+    .header {
+        flex-direction: column;
+        text-align: center;
+    }
+    
+    .header-actions {
+        justify-content: center;
+    }
+    
+    .task-header {
+        flex-direction: column;
+        gap: 10px;
+    }
+    
+    .task-actions {
+        justify-content: center;
+    }
+    
+    .timer-controls {
+        flex-wrap: wrap;
+        justify-content: center;
+    }
+    
+    .modal-content {
+        margin: 10% auto;
+        width: 95%;
+    }
+    
+    .report-controls {
+        flex-direction: column;
+        align-items: stretch;
+    }
+}
+
+/* 空状态样式 */
+.empty-state {
+    text-align: center;
+    padding: 60px 20px;
+    color: #a0aec0;
+}
+
+.empty-state i {
+    font-size: 4rem;
+    margin-bottom: 20px;
+    display: block;
+}
+
+.empty-state h3 {
+    font-size: 1.5rem;
+    margin-bottom: 10px;
+}
+
+.empty-state p {
+    font-size: 1rem;
+}
+
+/* 动画效果 */
+.fade-in {
+    animation: fadeIn 0.5s ease;
+}
+
+@keyframes fadeIn {
+    from { opacity: 0; transform: translateY(20px); }
+    to { opacity: 1; transform: translateY(0); }
+}
+
+.slide-in {
+    animation: slideIn 0.3s ease;
+}
+
+@keyframes slideIn {
+    from { transform: translateX(-100%); }
+    to { transform: translateX(0); }
+}
diff --git a/frontend/index.html b/frontend/index.html
new file mode 100644
index 0000000..8f71f5f
--- /dev/null
+++ b/frontend/index.html
@@ -0,0 +1,229 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>工作任务管理系统</title>
+    <link rel="stylesheet" href="css/style.css">
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css" rel="stylesheet">
+</head>
+<body>
+    <div class="container">
+        <!-- 头部 -->
+        <header class="header">
+            <h1><i class="fas fa-tasks"></i> 工作任务管理系统</h1>
+            <div class="header-actions">
+                <button id="addTaskBtn" class="btn btn-primary">
+                    <i class="fas fa-plus"></i> 添加任务
+                </button>
+                <button id="reportBtn" class="btn btn-secondary">
+                    <i class="fas fa-chart-bar"></i> 查看报表
+                </button>
+                <button id="timeHistoryBtn" class="btn btn-secondary">
+                    <i class="fas fa-history"></i> 时间历史
+                </button>
+            </div>
+        </header>
+
+        <!-- 主要内容区域 -->
+        <main class="main-content">
+            <!-- 任务列表 -->
+            <section class="task-section">
+                <h2>任务列表</h2>
+                <div class="task-filters" role="group" aria-label="任务状态筛选">
+                    <button type="button" class="btn btn-secondary filter-btn active" data-filter="all">
+                        <i class="fas fa-globe"></i> 全部
+                    </button>
+                    <button type="button" class="btn btn-secondary filter-btn" data-filter="pending">
+                        <i class="fas fa-circle-notch"></i> 未开始
+                    </button>
+                    <button type="button" class="btn btn-secondary filter-btn" data-filter="in_progress">
+                        <i class="fas fa-play-circle"></i> 进行中
+                    </button>
+                    <button type="button" class="btn btn-secondary filter-btn" data-filter="completed">
+                        <i class="fas fa-check-circle"></i> 已完成
+                    </button>
+                </div>
+                <div class="task-exclusions" role="group" aria-label="排除任务状态">
+                    <span class="exclusion-label">
+                        <i class="fas fa-ban"></i> 排除状态：
+                    </span>
+                    <button type="button" class="btn btn-outline exclusion-btn" data-status="pending">
+                        未开始
+                    </button>
+                    <button type="button" class="btn btn-outline exclusion-btn" data-status="in_progress">
+                        进行中
+                    </button>
+                    <button type="button" class="btn btn-outline exclusion-btn" data-status="completed">
+                        已完成
+                    </button>
+                </div>
+                <div id="taskList" class="task-list">
+                    <!-- 任务项将通过JavaScript动态生成 -->
+                </div>
+            </section>
+
+            <!-- 时间统计面板 -->
+            <aside class="stats-panel">
+                <h3>今日统计</h3>
+                <div class="stats-card">
+                    <div class="stat-item">
+                        <span class="stat-label">总时长</span>
+                        <span id="totalTime" class="stat-value">00:00:00</span>
+                    </div>
+                    <div class="stat-item">
+                        <span class="stat-label">完成任务</span>
+                        <span id="completedTasks" class="stat-value">0</span>
+                    </div>
+                    <div class="stat-item">
+                        <span class="stat-label">进行中</span>
+                        <span id="activeTasks" class="stat-value">0</span>
+                    </div>
+                </div>
+            </aside>
+        </main>
+    </div>
+
+    <!-- 添加/编辑任务模态框 -->
+    <div id="taskModal" class="modal">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h3 id="modalTitle">添加任务</h3>
+                <span class="close">&times;</span>
+            </div>
+            <div class="modal-body">
+                <form id="taskForm">
+                    <div class="form-group">
+                        <label for="taskTitle">任务标题 *</label>
+                        <input type="text" id="taskTitle" name="title" required>
+                    </div>
+                    <div class="form-group">
+                        <label for="taskDescription">任务描述</label>
+                        <textarea id="taskDescription" name="description" rows="4" placeholder="描述任务的具体内容和要求..."></textarea>
+                        <div class="form-actions">
+                            <button type="button" id="polishBtn" class="btn btn-outline">
+                                <i class="fas fa-magic"></i> AI润色
+                            </button>
+                        </div>
+                        <div id="polishedDescription" class="polished-content" style="display: none;">
+                            <h4>润色后的描述：</h4>
+                            <div class="polished-text"></div>
+                            <div class="polished-actions">
+                                <button type="button" id="usePolishedBtn" class="btn btn-primary btn-sm">使用润色版本</button>
+                                <button type="button" id="discardPolishedBtn" class="btn btn-outline btn-sm">保持原版</button>
+                            </div>
+                        </div>
+                    </div>
+                    <div class="form-group">
+                        <label for="taskStatus">状态</label>
+                        <select id="taskStatus" name="status">
+                            <option value="pending">待开始</option>
+                            <option value="in_progress">进行中</option>
+                            <option value="completed">已完成</option>
+                        </select>
+                    </div>
+                </form>
+            </div>
+            <div class="modal-footer">
+                <button type="button" id="cancelBtn" class="btn btn-outline">取消</button>
+                <button type="button" id="saveBtn" class="btn btn-primary">保存</button>
+            </div>
+        </div>
+    </div>
+
+    <!-- 报表模态框 -->
+    <div id="reportModal" class="modal">
+        <div class="modal-content large">
+            <div class="modal-header">
+                <h3>时间统计报表</h3>
+                <span class="close">&times;</span>
+            </div>
+            <div class="modal-body">
+                <div class="report-controls">
+                    <div class="form-group">
+                        <label for="reportDate">选择日期</label>
+                        <input type="date" id="reportDate">
+                    </div>
+                    <button id="loadReportBtn" class="btn btn-primary">加载报表</button>
+                </div>
+                <div id="reportContent" class="report-content">
+                    <!-- 报表内容将通过JavaScript动态生成 -->
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- 时间历史模态框 -->
+    <div id="timeHistoryModal" class="modal">
+        <div class="modal-content large">
+            <div class="modal-header">
+                <h3>时间历史记录</h3>
+                <span class="close">&times;</span>
+            </div>
+            <div class="modal-body">
+                <div class="history-controls">
+                    <div class="form-group">
+                        <label for="historyDays">查看天数</label>
+                        <select id="historyDays">
+                            <option value="7">最近7天</option>
+                            <option value="14">最近14天</option>
+                            <option value="30">最近30天</option>
+                            <option value="90">最近90天</option>
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label for="historyTaskFilter">任务筛选</label>
+                        <select id="historyTaskFilter">
+                            <option value="">所有任务</option>
+                        </select>
+                    </div>
+                    <button id="loadHistoryBtn" class="btn btn-primary">加载历史</button>
+                </div>
+                <div id="timeHistoryContent" class="history-content">
+                    <!-- 时间历史内容将通过JavaScript动态生成 -->
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- 任务时间历史模态框 -->
+    <div id="taskTimeHistoryModal" class="modal">
+        <div class="modal-content large">
+            <div class="modal-header">
+                <h3 id="taskHistoryTitle">任务时间历史</h3>
+                <span class="close">&times;</span>
+            </div>
+            <div class="modal-body">
+                <div class="history-controls">
+                    <div class="form-group">
+                        <label for="taskHistoryDays">查看天数</label>
+                        <select id="taskHistoryDays">
+                            <option value="7">最近7天</option>
+                            <option value="14">最近14天</option>
+                            <option value="30">最近30天</option>
+                            <option value="90">最近90天</option>
+                        </select>
+                    </div>
+                    <button id="loadTaskHistoryBtn" class="btn btn-primary">加载历史</button>
+                </div>
+                <div id="taskTimeHistoryContent" class="history-content">
+                    <!-- 任务时间历史内容将通过JavaScript动态生成 -->
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- 加载提示 -->
+    <div id="loadingOverlay" class="loading-overlay" style="display: none;">
+        <div class="loading-spinner">
+            <i class="fas fa-spinner fa-spin"></i>
+            <span>处理中...</span>
+        </div>
+    </div>
+
+    <!-- JavaScript文件 -->
+    <script src="js/api.js"></script>
+    <script src="js/timer.js"></script>
+    <script src="js/app.js"></script>
+</body>
+</html>
diff --git a/frontend/js/api.js b/frontend/js/api.js
new file mode 100644
index 0000000..8c0cac4
--- /dev/null
+++ b/frontend/js/api.js
@@ -0,0 +1,115 @@
+// API调用模块
+class WorkListAPI {
+    constructor() {
+        this.baseURL = '/api';
+    }
+
+    // 通用请求方法
+    async request(endpoint, options = {}) {
+        const url = `${this.baseURL}${endpoint}`;
+        const config = {
+            headers: {
+                'Content-Type': 'application/json',
+                ...options.headers
+            },
+            ...options
+        };
+
+        try {
+            const response = await fetch(url, config);
+            
+            if (!response.ok) {
+                const errorData = await response.json().catch(() => ({}));
+                throw new Error(errorData.error || `HTTP错误: ${response.status}`);
+            }
+
+            return await response.json();
+        } catch (error) {
+            console.error('API请求失败:', error);
+            throw error;
+        }
+    }
+
+    // 任务管理API
+    async getTasks() {
+        return this.request('/tasks');
+    }
+
+    async createTask(taskData) {
+        return this.request('/tasks', {
+            method: 'POST',
+            body: JSON.stringify(taskData)
+        });
+    }
+
+    async updateTask(taskId, taskData) {
+        return this.request(`/tasks/${taskId}`, {
+            method: 'PUT',
+            body: JSON.stringify(taskData)
+        });
+    }
+
+    async deleteTask(taskId) {
+        return this.request(`/tasks/${taskId}`, {
+            method: 'DELETE'
+        });
+    }
+
+    async polishTaskDescription(taskId) {
+        return this.request(`/tasks/${taskId}/polish`, {
+            method: 'POST'
+        });
+    }
+
+    // 计时器API
+    async startTimer(taskId) {
+        return this.request('/timer/start', {
+            method: 'POST',
+            body: JSON.stringify({ task_id: taskId })
+        });
+    }
+
+    async stopTimer(taskId) {
+        return this.request('/timer/stop', {
+            method: 'POST',
+            body: JSON.stringify({ task_id: taskId })
+        });
+    }
+
+    async getTimerStatus(taskId) {
+        return this.request(`/timer/status/${taskId}`);
+    }
+
+    async getTimerStatuses(taskIds) {
+        return this.request('/timer/status/batch', {
+            method: 'POST',
+            body: JSON.stringify({ task_ids: taskIds })
+        });
+    }
+
+    // 报表API
+    async getDailyReport(date) {
+        const params = date ? `?date=${date}` : '';
+        return this.request(`/reports/daily${params}`);
+    }
+
+    async getSummaryReport(days = 7) {
+        return this.request(`/reports/summary?days=${days}`);
+    }
+
+    // 时间段历史API
+    async getTaskTimeHistory(taskId, days = 30, page = 1, perPage = 20) {
+        return this.request(`/tasks/${taskId}/time-history?days=${days}&page=${page}&per_page=${perPage}`);
+    }
+
+    async getAllTimeHistory(days = 7, taskId = null) {
+        const params = new URLSearchParams({ days: days });
+        if (taskId) {
+            params.append('task_id', taskId);
+        }
+        return this.request(`/time-history?${params.toString()}`);
+    }
+}
+
+// 创建全局API实例
+const api = new WorkListAPI();
diff --git a/frontend/js/app.js b/frontend/js/app.js
new file mode 100644
index 0000000..974d369
--- /dev/null
+++ b/frontend/js/app.js
@@ -0,0 +1,807 @@
+// 主应用类
+class WorkListApp {
+    constructor() {
+        this.tasks = [];
+        this.currentEditingTask = null;
+        this.currentFilter = 'all';
+        this.excludedStatuses = new Set();
+        this.init();
+    }
+
+    // 初始化应用
+    init() {
+        this.bindEvents();
+        this.loadTasks();
+        this.setupDatePicker();
+    }
+
+    // 绑定事件
+    bindEvents() {
+        // 添加任务按钮
+        document.getElementById('addTaskBtn').addEventListener('click', () => {
+            this.showTaskModal();
+        });
+
+        // 报表按钮
+        document.getElementById('reportBtn').addEventListener('click', () => {
+            this.showReportModal();
+        });
+
+        // 时间历史按钮
+        document.getElementById('timeHistoryBtn').addEventListener('click', () => {
+            this.showTimeHistoryModal();
+        });
+
+        // 模态框关闭
+        document.querySelectorAll('.close').forEach(closeBtn => {
+            closeBtn.addEventListener('click', (e) => {
+                const modal = e.target.closest('.modal');
+                this.hideModal(modal);
+            });
+        });
+
+        // 点击模态框外部关闭
+        document.querySelectorAll('.modal').forEach(modal => {
+            modal.addEventListener('click', (e) => {
+                if (e.target === modal) {
+                    this.hideModal(modal);
+                }
+            });
+        });
+
+        // 任务表单
+        document.getElementById('saveBtn').addEventListener('click', () => {
+            this.saveTask();
+        });
+
+        document.getElementById('cancelBtn').addEventListener('click', () => {
+            this.hideModal(document.getElementById('taskModal'));
+        });
+
+        // AI润色按钮
+        document.getElementById('polishBtn').addEventListener('click', () => {
+            this.polishDescription();
+        });
+
+        // 润色相关按钮
+        document.getElementById('usePolishedBtn').addEventListener('click', () => {
+            this.usePolishedDescription();
+        });
+
+        document.getElementById('discardPolishedBtn').addEventListener('click', () => {
+            this.discardPolishedDescription();
+        });
+
+        // 报表加载按钮
+        document.getElementById('loadReportBtn').addEventListener('click', () => {
+            this.loadReport();
+        });
+
+        // 历史记录加载按钮
+        document.getElementById('loadHistoryBtn').addEventListener('click', () => {
+            this.loadTimeHistory();
+        });
+
+        // 任务历史加载按钮
+        document.getElementById('loadTaskHistoryBtn').addEventListener('click', () => {
+            this.loadTaskTimeHistory();
+        });
+
+        // 任务筛选按钮
+        document.querySelectorAll('.filter-btn').forEach(btn => {
+            btn.addEventListener('click', (event) => {
+                const filter = event.currentTarget.dataset.filter;
+                this.setTaskFilter(filter);
+            });
+        });
+
+        // 排除状态按钮
+        document.querySelectorAll('.exclusion-btn').forEach(btn => {
+            btn.addEventListener('click', (event) => {
+                const status = event.currentTarget.dataset.status;
+                this.toggleExcludeStatus(status);
+            });
+        });
+    }
+
+    // 设置日期选择器
+    setupDatePicker() {
+        const dateInput = document.getElementById('reportDate');
+        const today = new Date().toISOString().split('T')[0];
+        dateInput.value = today;
+    }
+
+    // 显示加载提示
+    showLoading() {
+        document.getElementById('loadingOverlay').style.display = 'flex';
+    }
+
+    // 隐藏加载提示
+    hideLoading() {
+        document.getElementById('loadingOverlay').style.display = 'none';
+    }
+
+    // 显示模态框
+    showModal(modalId) {
+        const modal = document.getElementById(modalId);
+        modal.style.display = 'block';
+        document.body.style.overflow = 'hidden';
+    }
+
+    // 隐藏模态框
+    hideModal(modal) {
+        modal.style.display = 'none';
+        document.body.style.overflow = 'auto';
+    }
+
+    // 显示任务模态框
+    showTaskModal(task = null) {
+        this.currentEditingTask = task;
+        const modal = document.getElementById('taskModal');
+        const form = document.getElementById('taskForm');
+        
+        if (task) {
+            // 编辑模式
+            document.getElementById('modalTitle').textContent = '编辑任务';
+            document.getElementById('taskTitle').value = task.title;
+            document.getElementById('taskDescription').value = task.description || '';
+            document.getElementById('taskStatus').value = task.status;
+        } else {
+            // 新建模式
+            document.getElementById('modalTitle').textContent = '添加任务';
+            form.reset();
+        }
+
+        // 隐藏润色内容
+        document.getElementById('polishedDescription').style.display = 'none';
+        
+        this.showModal('taskModal');
+    }
+
+    // 保存任务
+    async saveTask() {
+        try {
+            this.showLoading();
+
+            const formData = {
+                title: document.getElementById('taskTitle').value.trim(),
+                description: document.getElementById('taskDescription').value.trim(),
+                status: document.getElementById('taskStatus').value
+            };
+
+            if (!formData.title) {
+                throw new Error('任务标题不能为空');
+            }
+
+            let savedTask;
+            if (this.currentEditingTask) {
+                // 更新任务
+                savedTask = await api.updateTask(this.currentEditingTask.id, formData);
+            } else {
+                // 创建任务
+                savedTask = await api.createTask(formData);
+            }
+
+            this.hideModal(document.getElementById('taskModal'));
+            await this.loadTasks();
+            this.showNotification('任务保存成功', 'success');
+
+        } catch (error) {
+            console.error('保存任务失败:', error);
+            this.showNotification(error.message || '保存任务失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 删除任务
+    async deleteTask(taskId) {
+        if (!confirm('确定要删除这个任务吗？')) {
+            return;
+        }
+
+        try {
+            this.showLoading();
+            await api.deleteTask(taskId);
+            await this.loadTasks();
+            this.showNotification('任务删除成功', 'success');
+        } catch (error) {
+            console.error('删除任务失败:', error);
+            this.showNotification(error.message || '删除任务失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 开始计时
+    async startTimer(taskId) {
+        try {
+            this.showLoading();
+            await taskTimer.startTimer(taskId);
+            this.updateTaskStatusLocal(taskId, 'in_progress');
+            this.renderTasks();
+            this.updateStats();
+            this.showNotification('计时开始', 'success');
+        } catch (error) {
+            console.error('开始计时失败:', error);
+            this.showNotification(error.message || '开始计时失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 停止计时
+    async stopTimer(taskId) {
+        try {
+            this.showLoading();
+            await taskTimer.stopTimer(taskId);
+            this.updateTaskStatusLocal(taskId, 'pending');
+            this.renderTasks();
+            this.updateStats();
+            this.showNotification('计时结束', 'success');
+        } catch (error) {
+            console.error('停止计时失败:', error);
+            this.showNotification(error.message || '停止计时失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // AI润色描述
+    async polishDescription() {
+        const description = document.getElementById('taskDescription').value.trim();
+        if (!description) {
+            this.showNotification('请先输入任务描述', 'warning');
+            return;
+        }
+
+        try {
+            this.showLoading();
+            
+            // 如果有正在编辑的任务，使用其ID；否则提示用户先保存任务
+            if (!this.currentEditingTask) {
+                this.showNotification('请先保存任务，然后再进行润色', 'warning');
+                return;
+            }
+
+            const result = await api.polishTaskDescription(this.currentEditingTask.id);
+            
+            // 显示润色结果
+            const polishedDiv = document.getElementById('polishedDescription');
+            const polishedText = polishedDiv.querySelector('.polished-text');
+            polishedText.textContent = result.polished;
+            polishedDiv.style.display = 'block';
+            
+            this.showNotification('AI润色完成', 'success');
+
+        } catch (error) {
+            console.error('AI润色失败:', error);
+            this.showNotification(error.message || 'AI润色失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 使用润色版本
+    usePolishedDescription() {
+        const polishedText = document.querySelector('.polished-text').textContent;
+        document.getElementById('taskDescription').value = polishedText;
+        document.getElementById('polishedDescription').style.display = 'none';
+        this.showNotification('已使用润色版本', 'success');
+    }
+
+    // 丢弃润色版本
+    discardPolishedDescription() {
+        document.getElementById('polishedDescription').style.display = 'none';
+    }
+
+    // 加载任务列表
+    async loadTasks() {
+        try {
+            this.tasks = await api.getTasks();
+            // 恢复未结束的计时器（需要在渲染之前）
+            await taskTimer.restoreTimers(this.tasks);
+            this.renderTasks();
+            this.updateStats();
+        } catch (error) {
+            console.error('加载任务失败:', error);
+            this.showNotification('加载任务失败', 'error');
+        }
+    }
+
+    // 设置任务状态筛选
+    setTaskFilter(filter = 'all') {
+        const normalized = filter || 'all';
+        if (this.currentFilter !== normalized) {
+            this.currentFilter = normalized;
+        }
+        this.renderTasks();
+    }
+
+    // 更新筛选按钮状态
+    updateFilterButtons() {
+        document.querySelectorAll('.filter-btn').forEach(btn => {
+            const isActive = btn.dataset.filter === this.currentFilter;
+            btn.classList.toggle('active', isActive);
+        });
+    }
+
+    // 切换排除状态
+    toggleExcludeStatus(status) {
+        if (this.excludedStatuses.has(status)) {
+            this.excludedStatuses.delete(status);
+        } else {
+            this.excludedStatuses.add(status);
+        }
+        this.renderTasks();
+    }
+
+    // 更新排除按钮状态
+    updateExclusionButtons() {
+        document.querySelectorAll('.exclusion-btn').forEach(btn => {
+            const status = btn.dataset.status;
+            btn.classList.toggle('active', this.excludedStatuses.has(status));
+        });
+    }
+
+    // 获取筛选后的任务列表
+    getFilteredTasks() {
+        if (this.currentFilter === 'all') {
+            return this.tasks.filter(task => !this.excludedStatuses.has(task.status));
+        }
+        return this.tasks
+            .filter(task => task.status === this.currentFilter)
+            .filter(task => !this.excludedStatuses.has(task.status));
+    }
+
+    // 获取筛选名称
+    getFilterDisplayName(filter) {
+        const map = {
+            'all': '全部任务',
+            'pending': '未开始任务',
+            'in_progress': '进行中任务',
+            'completed': '已完成任务'
+        };
+        return map[filter] || '任务';
+    }
+
+    // 渲染任务列表
+    renderTasks() {
+        const taskList = document.getElementById('taskList');
+        this.updateFilterButtons();
+        this.updateExclusionButtons();
+        const filteredTasks = this.getFilteredTasks();
+        
+        if (this.tasks.length === 0) {
+            taskList.innerHTML = `
+                <div class="empty-state">
+                    <i class="fas fa-tasks"></i>
+                    <h3>暂无任务</h3>
+                    <p>点击"添加任务"开始记录你的工作</p>
+                </div>
+            `;
+            return;
+        }
+
+        if (filteredTasks.length === 0) {
+            const filterLabel = this.getFilterDisplayName(this.currentFilter);
+            taskList.innerHTML = `
+                <div class="empty-state">
+                    <i class="fas fa-filter"></i>
+                    <h3>暂无${filterLabel}</h3>
+                    <p>试试切换其他状态，或者新建一条任务</p>
+                </div>
+            `;
+            return;
+        }
+
+        taskList.innerHTML = filteredTasks.map(task => this.renderTaskItem(task)).join('');
+    }
+
+    // 渲染单个任务项
+    renderTaskItem(task) {
+        const statusClass = task.status;
+        const statusText = this.getStatusText(task.status);
+        const isRunning = taskTimer.hasActiveTimer(task.id);
+        
+        // 如果正在计时，显示当前会话时长；否则显示总时长
+        let displayTime;
+        if (isRunning) {
+            const timer = taskTimer.activeTimers.get(task.id);
+            const currentDuration = timer ? timer.currentSessionDuration || 0 : 0;
+            displayTime = this.formatTime(currentDuration);
+        } else {
+            displayTime = this.formatTime(task.total_time || 0);
+        }
+
+        return `
+            <div class="task-item ${statusClass} fade-in" data-task-id="${task.id}">
+                <div class="task-header">
+                    <div>
+                        <div class="task-title">${this.escapeHtml(task.title)}</div>
+                        <div class="task-status ${statusClass}">${statusText}</div>
+                    </div>
+                    <div class="task-actions">
+                        <button class="btn btn-outline btn-sm" onclick="app.showTaskModal(${JSON.stringify(task).replace(/"/g, '&quot;')})">
+                            <i class="fas fa-edit"></i> 编辑
+                        </button>
+                        <button class="btn btn-outline btn-sm" onclick="app.showTaskTimeHistory(${task.id})">
+                            <i class="fas fa-clock"></i> 时间历史
+                        </button>
+                        <button class="btn btn-danger btn-sm" onclick="app.deleteTask(${task.id})">
+                            <i class="fas fa-trash"></i> 删除
+                        </button>
+                    </div>
+                </div>
+                
+                ${task.description ? `
+                    <div class="task-description ${task.polished_description ? 'polished' : ''}">
+                        ${this.escapeHtml(task.description)}
+                        ${task.polished_description ? `
+                            <div class="polished-version">
+                                <strong>润色版本：</strong>
+                                ${this.escapeHtml(task.polished_description)}
+                            </div>
+                        ` : ''}
+                    </div>
+                ` : ''}
+                
+                <div class="task-timer">
+                    <div class="timer-display">${displayTime}</div>
+                    <div class="timer-controls">
+                        <button class="btn btn-success btn-sm start-timer-btn" 
+                                onclick="app.startTimer(${task.id})" 
+                                style="display: ${isRunning ? 'none' : 'inline-flex'}">
+                            <i class="fas fa-play"></i> 开始
+                        </button>
+                        <button class="btn btn-danger btn-sm stop-timer-btn" 
+                                onclick="app.stopTimer(${task.id})" 
+                                style="display: ${isRunning ? 'inline-flex' : 'none'}">
+                            <i class="fas fa-stop"></i> 停止
+                        </button>
+                    </div>
+                </div>
+                
+                <div class="task-stats">
+                    <div class="stat-item">
+                        <i class="fas fa-clock"></i>
+                        <span>总时长: ${this.formatTime(task.total_time || 0)}</span>
+                    </div>
+                    <div class="stat-item">
+                        <i class="fas fa-calendar"></i>
+                        <span>创建: ${this.formatDate(task.created_at)}</span>
+                    </div>
+                </div>
+            </div>
+        `;
+    }
+
+    // 更新本地任务状态
+    updateTaskStatusLocal(taskId, status) {
+        const task = this.tasks.find(item => item.id === taskId);
+        if (task) {
+            task.status = status;
+        }
+    }
+
+    // 更新统计信息
+    updateStats() {
+        const totalTime = this.tasks.reduce((sum, task) => sum + (task.total_time || 0), 0);
+        const completedTasks = this.tasks.filter(task => task.status === 'completed').length;
+        const activeTasks = this.tasks.filter(task => task.status === 'in_progress').length;
+
+        document.getElementById('totalTime').textContent = this.formatTime(totalTime);
+        document.getElementById('completedTasks').textContent = completedTasks;
+        document.getElementById('activeTasks').textContent = activeTasks;
+    }
+
+    // 显示报表模态框
+    showReportModal() {
+        this.showModal('reportModal');
+        this.loadReport();
+    }
+
+    // 显示时间历史模态框
+    showTimeHistoryModal() {
+        this.showModal('timeHistoryModal');
+        this.loadTaskFilter();
+        this.loadTimeHistory();
+    }
+
+    // 显示任务时间历史模态框
+    showTaskTimeHistory(taskId) {
+        this.currentViewingTaskId = taskId;
+        const task = this.tasks.find(t => t.id === taskId);
+        if (task) {
+            document.getElementById('taskHistoryTitle').textContent = `"${task.title}" 的时间历史`;
+        }
+        this.showModal('taskTimeHistoryModal');
+        this.loadTaskTimeHistory();
+    }
+
+    // 加载报表
+    async loadReport() {
+        try {
+            this.showLoading();
+            const date = document.getElementById('reportDate').value;
+            const report = await api.getDailyReport(date);
+            this.renderReport(report);
+        } catch (error) {
+            console.error('加载报表失败:', error);
+            this.showNotification('加载报表失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 渲染报表
+    renderReport(report) {
+        const reportContent = document.getElementById('reportContent');
+        
+        if (report.task_stats.length === 0) {
+            reportContent.innerHTML = `
+                <div class="empty-state">
+                    <i class="fas fa-chart-bar"></i>
+                    <h3>暂无数据</h3>
+                    <p>${report.date} 没有记录任何工作时间</p>
+                </div>
+            `;
+            return;
+        }
+
+        const totalTime = this.formatTime(report.total_time);
+        
+        reportContent.innerHTML = `
+            <div class="report-day">
+                <h4>${report.date} - 总工作时长: ${totalTime}</h4>
+                ${report.task_stats.map(taskStat => `
+                    <div class="report-task">
+                        <div class="report-task-title">${this.escapeHtml(taskStat.task.title)}</div>
+                        <div class="report-task-time">${this.formatTime(taskStat.total_duration)}</div>
+                    </div>
+                `).join('')}
+            </div>
+        `;
+    }
+
+    // 加载任务筛选器
+    loadTaskFilter() {
+        const taskFilter = document.getElementById('historyTaskFilter');
+        taskFilter.innerHTML = '<option value="">所有任务</option>';
+        
+        this.tasks.forEach(task => {
+            const option = document.createElement('option');
+            option.value = task.id;
+            option.textContent = task.title;
+            taskFilter.appendChild(option);
+        });
+    }
+
+    // 加载时间历史
+    async loadTimeHistory() {
+        try {
+            this.showLoading();
+            const days = parseInt(document.getElementById('historyDays').value);
+            const taskId = document.getElementById('historyTaskFilter').value || null;
+            
+            const history = await api.getAllTimeHistory(days, taskId);
+            this.renderTimeHistory(history);
+        } catch (error) {
+            console.error('加载时间历史失败:', error);
+            this.showNotification('加载时间历史失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 加载任务时间历史
+    async loadTaskTimeHistory() {
+        if (!this.currentViewingTaskId) return;
+        
+        try {
+            this.showLoading();
+            const days = parseInt(document.getElementById('taskHistoryDays').value);
+            
+            const history = await api.getTaskTimeHistory(this.currentViewingTaskId, days);
+            this.renderTaskTimeHistory(history);
+        } catch (error) {
+            console.error('加载任务时间历史失败:', error);
+            this.showNotification('加载任务时间历史失败', 'error');
+        } finally {
+            this.hideLoading();
+        }
+    }
+
+    // 渲染时间历史
+    renderTimeHistory(history) {
+        const content = document.getElementById('timeHistoryContent');
+        
+        if (history.daily_tasks.length === 0) {
+            content.innerHTML = `
+                <div class="history-empty">
+                    <i class="fas fa-history"></i>
+                    <h3>暂无时间记录</h3>
+                    <p>在指定时间段内没有找到任何工作时间记录</p>
+                </div>
+            `;
+            return;
+        }
+
+        content.innerHTML = history.daily_tasks.map(day => `
+            <div class="history-day">
+                <h4>
+                    ${this.formatDate(day.date)}
+                    <span class="day-total-time">${this.formatTime(day.total_time)}</span>
+                </h4>
+                ${day.tasks.map(task => `
+                    <div class="history-task">
+                        <div class="history-task-header">
+                            <div class="history-task-title">${this.escapeHtml(task.task.title)}</div>
+                            <div class="history-task-total">${this.formatTime(task.total_duration)}</div>
+                        </div>
+                        <div class="time-segments">
+                            ${task.segments.map(segment => `
+                                <div class="time-segment">
+                                    <div class="segment-timespan">
+                                        ${this.formatDateTime(segment.start_time)} - ${this.formatDateTime(segment.end_time)}
+                                    </div>
+                                    <div class="segment-time">
+                                        <div class="segment-duration">${this.formatTime(segment.duration)}</div>
+                                        <div class="segment-period">${this.formatTimePeriod(segment.start_time, segment.end_time)}</div>
+                                    </div>
+                                </div>
+                            `).join('')}
+                        </div>
+                    </div>
+                `).join('')}
+            </div>
+        `).join('');
+    }
+
+    // 渲染任务时间历史
+    renderTaskTimeHistory(history) {
+        const content = document.getElementById('taskTimeHistoryContent');
+        
+        if (history.daily_segments.length === 0) {
+            content.innerHTML = `
+                <div class="history-empty">
+                    <i class="fas fa-clock"></i>
+                    <h3>暂无时间记录</h3>
+                    <p>该任务在指定时间段内没有工作时间记录</p>
+                </div>
+            `;
+            return;
+        }
+
+        content.innerHTML = history.daily_segments.map(day => `
+            <div class="history-day">
+                <h4>
+                    ${this.formatDate(day.date)}
+                    <span class="day-total-time">${this.formatTime(day.total_duration)}</span>
+                </h4>
+                <div class="time-segments">
+                    ${day.segments.map(segment => `
+                        <div class="time-segment">
+                            <div class="segment-timespan">
+                                ${this.formatDateTime(segment.start_time)} - ${this.formatDateTime(segment.end_time)}
+                            </div>
+                            <div class="segment-time">
+                                <div class="segment-duration">${this.formatTime(segment.duration)}</div>
+                                <div class="segment-period">${this.formatTimePeriod(segment.start_time, segment.end_time)}</div>
+                            </div>
+                        </div>
+                    `).join('')}
+                </div>
+            </div>
+        `).join('');
+    }
+
+    // 工具方法
+    getStatusText(status) {
+        const statusMap = {
+            'pending': '待开始',
+            'in_progress': '进行中',
+            'completed': '已完成'
+        };
+        return statusMap[status] || status;
+    }
+
+    formatTime(seconds) {
+        const hours = Math.floor(seconds / 3600);
+        const minutes = Math.floor((seconds % 3600) / 60);
+        const secs = seconds % 60;
+        return `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
+    }
+
+    // 后端时间为UTC（无Z），需要按UTC解析并按上海时区显示
+    parseUtcISO(dateTimeString) {
+        if (!dateTimeString) return null;
+        // 如果字符串不包含时区信息，则按UTC处理（补上Z）
+        const hasTimezone = /[zZ]|[\+\-]\d{2}:?\d{2}$/.test(dateTimeString);
+        const normalized = hasTimezone ? dateTimeString : `${dateTimeString}Z`;
+        return new Date(normalized);
+    }
+
+    formatDate(dateString) {
+        const date = this.parseUtcISO(dateString);
+        if (!date) return '';
+        return date.toLocaleDateString('zh-CN', { timeZone: 'Asia/Shanghai' });
+    }
+
+    formatDateTime(dateTimeString) {
+        const date = this.parseUtcISO(dateTimeString);
+        if (!date) return '';
+        return date.toLocaleString('zh-CN', {
+            month: '2-digit',
+            day: '2-digit',
+            hour: '2-digit',
+            minute: '2-digit',
+            second: '2-digit',
+            timeZone: 'Asia/Shanghai'
+        });
+    }
+
+    formatTimePeriod(startTime, endTime) {
+        const start = this.parseUtcISO(startTime);
+        const end = this.parseUtcISO(endTime);
+        const duration = Math.floor((end - start) / 1000);
+        
+        if (duration < 60) {
+            return `${duration}秒`;
+        } else if (duration < 3600) {
+            const minutes = Math.floor(duration / 60);
+            const seconds = duration % 60;
+            return `${minutes}分${seconds}秒`;
+        } else {
+            const hours = Math.floor(duration / 3600);
+            const minutes = Math.floor((duration % 3600) / 60);
+            return `${hours}小时${minutes}分钟`;
+        }
+    }
+
+    escapeHtml(text) {
+        const div = document.createElement('div');
+        div.textContent = text;
+        return div.innerHTML;
+    }
+
+    showNotification(message, type = 'info') {
+        // 简单的通知实现
+        const notification = document.createElement('div');
+        notification.className = `notification notification-${type}`;
+        notification.textContent = message;
+        notification.style.cssText = `
+            position: fixed;
+            top: 20px;
+            right: 20px;
+            padding: 15px 20px;
+            border-radius: 8px;
+            color: white;
+            font-weight: 600;
+            z-index: 3000;
+            animation: slideIn 0.3s ease;
+            max-width: 300px;
+        `;
+
+        // 根据类型设置背景色
+        const colors = {
+            'success': '#48bb78',
+            'error': '#f56565',
+            'warning': '#ed8936',
+            'info': '#4299e1'
+        };
+        notification.style.backgroundColor = colors[type] || colors.info;
+
+        document.body.appendChild(notification);
+
+        // 3秒后自动移除
+        setTimeout(() => {
+            notification.remove();
+        }, 3000);
+    }
+}
+
+// 页面加载完成后初始化应用
+document.addEventListener('DOMContentLoaded', () => {
+    window.app = new WorkListApp();
+});
diff --git a/frontend/js/timer.js b/frontend/js/timer.js
new file mode 100644
index 0000000..f6ca7d8
--- /dev/null
+++ b/frontend/js/timer.js
@@ -0,0 +1,268 @@
+// 计时器模块
+class TaskTimer {
+    constructor() {
+        this.activeTimers = new Map(); // 存储活跃的计时器
+        this.timerIntervals = new Map(); // 存储定时器ID
+    }
+
+    // 开始计时
+    async startTimer(taskId) {
+        try {
+            // 检查是否已有活跃计时器
+            if (this.activeTimers.has(taskId)) {
+                throw new Error('该任务已在计时中');
+            }
+
+            // 调用API开始计时
+            const timeRecord = await api.startTimer(taskId);
+            
+            // 创建本地计时器
+            const timer = {
+                taskId: taskId,
+                startTime: new Date(),
+                currentSessionDuration: 0,  // 当前会话时长（从0开始）
+                isRunning: true
+            };
+
+            this.activeTimers.set(taskId, timer);
+
+            // 启动定时器更新
+            const intervalId = setInterval(() => {
+                this.updateTimer(taskId);
+            }, 1000);
+
+            this.timerIntervals.set(taskId, intervalId);
+
+            // 更新UI
+            this.updateTimerDisplay(taskId);
+            this.updateTaskStatus(taskId, 'in_progress');
+
+            return timer;
+
+        } catch (error) {
+            console.error('开始计时失败:', error);
+            throw error;
+        }
+    }
+
+    // 停止计时
+    async stopTimer(taskId) {
+        try {
+            const timer = this.activeTimers.get(taskId);
+            if (!timer) {
+                throw new Error('没有找到活跃的计时器');
+            }
+
+            // 调用API停止计时
+            await api.stopTimer(taskId);
+
+            // 清除本地计时器
+            this.clearTimer(taskId);
+
+            // 更新UI
+            this.updateTaskStatus(taskId, 'pending');
+            this.updateTimerDisplay(taskId);
+
+            // 刷新任务列表以显示总时长
+            if (window.app) {
+                window.app.loadTasks();
+            }
+
+        } catch (error) {
+            console.error('停止计时失败:', error);
+            throw error;
+        }
+    }
+
+    // 清除计时器
+    clearTimer(taskId) {
+        const intervalId = this.timerIntervals.get(taskId);
+        if (intervalId) {
+            clearInterval(intervalId);
+            this.timerIntervals.delete(taskId);
+        }
+        this.activeTimers.delete(taskId);
+    }
+
+    // 更新计时器
+    updateTimer(taskId) {
+        const timer = this.activeTimers.get(taskId);
+        if (!timer) return;
+
+        const now = new Date();
+        // 计算当前会话的时长（从开始计时到现在）
+        timer.currentSessionDuration = Math.floor((now - timer.startTime) / 1000);
+        
+        this.updateTimerDisplay(taskId);
+    }
+
+    // 更新计时器显示
+    updateTimerDisplay(taskId) {
+        const timer = this.activeTimers.get(taskId);
+        const displayElement = document.querySelector(`[data-task-id="${taskId}"] .timer-display`);
+        
+        if (!displayElement) return;
+
+        if (timer && timer.isRunning) {
+            // 显示当前会话的时长（从0开始）
+            const duration = timer.currentSessionDuration || 0;
+            const hours = Math.floor(duration / 3600);
+            const minutes = Math.floor((duration % 3600) / 60);
+            const seconds = duration % 60;
+            
+            displayElement.textContent = `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
+            displayElement.style.color = '#48bb78';
+        } else {
+            // 显示总时长
+            this.updateTotalTimeDisplay(taskId);
+        }
+    }
+
+    // 更新总时长显示
+    async updateTotalTimeDisplay(taskId) {
+        try {
+            const tasks = await api.getTasks();
+            const task = tasks.find(t => t.id === taskId);
+            
+            if (task) {
+                const displayElement = document.querySelector(`[data-task-id="${taskId}"] .timer-display`);
+                if (displayElement) {
+                    const totalSeconds = task.total_time || 0;
+                    const hours = Math.floor(totalSeconds / 3600);
+                    const minutes = Math.floor((totalSeconds % 3600) / 60);
+                    const seconds = totalSeconds % 60;
+                    
+                    displayElement.textContent = `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
+                    displayElement.style.color = '#4a5568';
+                }
+            }
+        } catch (error) {
+            console.error('更新总时长显示失败:', error);
+        }
+    }
+
+    // 更新任务状态
+    updateTaskStatus(taskId, status) {
+        const taskElement = document.querySelector(`[data-task-id="${taskId}"]`);
+        if (!taskElement) return;
+
+        // 更新状态类
+        taskElement.className = taskElement.className.replace(/in-progress|completed|pending/g, '');
+        taskElement.classList.add(status);
+
+        // 更新状态显示
+        const statusElement = taskElement.querySelector('.task-status');
+        if (statusElement) {
+            statusElement.textContent = this.getStatusText(status);
+            statusElement.className = `task-status ${status}`;
+        }
+
+        // 更新按钮状态
+        this.updateTimerButtons(taskId, status);
+    }
+
+    // 更新计时器按钮
+    updateTimerButtons(taskId, status) {
+        const startBtn = document.querySelector(`[data-task-id="${taskId}"] .start-timer-btn`);
+        const stopBtn = document.querySelector(`[data-task-id="${taskId}"] .stop-timer-btn`);
+
+        if (startBtn && stopBtn) {
+            if (status === 'in_progress') {
+                startBtn.style.display = 'none';
+                stopBtn.style.display = 'inline-flex';
+            } else {
+                startBtn.style.display = 'inline-flex';
+                stopBtn.style.display = 'none';
+            }
+        }
+    }
+
+    // 获取状态文本
+    getStatusText(status) {
+        const statusMap = {
+            'pending': '待开始',
+            'in_progress': '进行中',
+            'completed': '已完成'
+        };
+        return statusMap[status] || status;
+    }
+
+    // 格式化时间
+    formatTime(seconds) {
+        const hours = Math.floor(seconds / 3600);
+        const minutes = Math.floor((seconds % 3600) / 60);
+        const secs = seconds % 60;
+        return `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
+    }
+
+    // 检查是否有活跃计时器
+    hasActiveTimer(taskId) {
+        return this.activeTimers.has(taskId);
+    }
+
+    // 获取所有活跃计时器
+    getActiveTimers() {
+        return Array.from(this.activeTimers.values());
+    }
+
+    // 停止所有计时器
+    async stopAllTimers() {
+        const promises = Array.from(this.activeTimers.keys()).map(taskId => 
+            this.stopTimer(taskId).catch(error => {
+                console.error(`停止任务${taskId}计时失败:`, error);
+            })
+        );
+        await Promise.all(promises);
+    }
+
+    // 恢复未结束的计时器（用于页面重新加载后）
+    async restoreTimers(tasks) {
+        try {
+            const taskIds = tasks.map(task => task.id);
+            if (!taskIds.length) {
+                return;
+            }
+
+            const statuses = await api.getTimerStatuses(taskIds);
+
+            for (const task of tasks) {
+                const timerStatus = statuses?.[task.id];
+                
+                if (timerStatus && timerStatus.is_running) {
+                    // 使用服务器返回的开始时间（从ISO格式字符串创建Date对象）
+                    const startTime = new Date(timerStatus.start_time);
+                    const now = new Date();
+                    
+                    // 恢复计时器
+                    const timer = {
+                        taskId: task.id,
+                        startTime: startTime,
+                        currentSessionDuration: Math.floor((now - startTime) / 1000),
+                        isRunning: true
+                    };
+
+                    this.activeTimers.set(task.id, timer);
+
+                    // 启动定时器更新
+                    const intervalId = setInterval(() => {
+                        this.updateTimer(task.id);
+                    }, 1000);
+
+                    this.timerIntervals.set(task.id, intervalId);
+
+                    // 更新UI
+                    this.updateTimerDisplay(task.id);
+                    this.updateTaskStatus(task.id, 'in_progress');
+                    
+                    console.log(`恢复了任务 ${task.id} 的计时器`);
+                }
+            }
+        } catch (error) {
+            console.error('恢复计时器失败:', error);
+        }
+    }
+
+}
+
+// 创建全局计时器实例
+const taskTimer = new TaskTimer();
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..23137dd
--- /dev/null
+++ b/main.py
@@ -0,0 +1,6 @@
+def main():
+    print("Hello from worklist!")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..4638a31
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,7 @@
+[project]
+name = "worklist"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.14"
+dependencies = []
diff --git a/start.py b/start.py
new file mode 100644
index 0000000..f65c511
--- /dev/null
+++ b/start.py
@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+"""
+工作任务管理系统启动脚本
+"""
+
+import os
+import sys
+import subprocess
+import webbrowser
+import time
+from pathlib import Path
+
+def check_python_version():
+    """检查Python版本"""
+    if sys.version_info < (3, 7):
+        print("错误: 需要Python 3.7或更高版本")
+        sys.exit(1)
+
+def install_dependencies():
+    """安装依赖"""
+    print("正在安装Python依赖...")
+    try:
+        subprocess.check_call([sys.executable, "-m", "pip", "install", "-r", "backend/requirements.txt"])
+        print("✓ Python依赖安装完成")
+    except subprocess.CalledProcessError as e:
+        print(f"错误: 安装依赖失败 - {e}")
+        sys.exit(1)
+
+def create_env_file():
+    """创建环境变量文件"""
+    env_file = Path("backend/.env")
+    if not env_file.exists():
+        print("创建环境变量文件...")
+        with open(env_file, "w", encoding="utf-8") as f:
+            f.write("""# OpenAI API配置（可选，用于AI润色功能）
+OPENAI_API_KEY=your_openai_api_key_here
+
+# 数据库配置
+DATABASE_URL=sqlite:///worklist.db
+
+# Flask配置
+SECRET_KEY=your-secret-key-here
+""")
+        print("✓ 环境变量文件已创建: backend/.env")
+        print("提示: 如需使用AI润色功能，请在.env文件中设置OPENAI_API_KEY")
+
+def start_server():
+    """启动服务器"""
+    print("正在启动服务器...")
+    os.chdir("backend")
+    try:
+        # 启动Flask应用
+        subprocess.run([sys.executable, "app.py"])
+    except KeyboardInterrupt:
+        print("\n服务器已停止")
+    except Exception as e:
+        print(f"错误: 启动服务器失败 - {e}")
+        sys.exit(1)
+
+def main():
+    """主函数"""
+    print("=" * 50)
+    print("工作任务管理系统")
+    print("=" * 50)
+    
+    # 检查Python版本
+    check_python_version()
+    
+    # 安装依赖
+    install_dependencies()
+    
+    # 创建环境变量文件
+    create_env_file()
+    
+    print("\n启动说明:")
+    print("1. 服务器启动后，请在浏览器中访问: http://localhost:5000")
+    print("2. 按 Ctrl+C 停止服务器")
+    print("3. 如需使用AI润色功能，请配置OpenAI API密钥")
+    print("\n正在启动服务器...")
+    
+    # 延迟2秒后自动打开浏览器
+    def open_browser():
+        time.sleep(2)
+        webbrowser.open("http://localhost:5000")
+    
+    import threading
+    browser_thread = threading.Thread(target=open_browser)
+    browser_thread.daemon = True
+    browser_thread.start()
+    
+    # 启动服务器
+    start_server()
+
+if __name__ == "__main__":
+    main()