feat: 后台管理系统 (Python Flask)

后台管理功能：
- 大模型接口配置管理（增删改、设为默认）
- 智能体管理（增删改、类别、标签、prompt、LLM配置、热度等）
- 搜索配置管理（Tavily等搜索接口）
- 系统设置（应用名称、版本、游客限制、管理员密码）
- 统计信息（LLM调用、搜索调用、智能体使用排行）

技术方案：
- Python Flask 后端服务 (端口 19020)
- SQLite 数据库存储配置
- 前端后台管理界面 (/admin)
- RESTful API 接口

后台入口：
- URL: http://localhost:19020/admin
- 默认账号: admin / admin123

前端配置获取：
- /api/config 获取LLM、搜索、智能体、系统配置

.gitignore

@@ -0,0 +1,12 @@
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+*.so
+*.egg-info/
+dist/
+build/
+*.db
+data.db
+node_modules/

backend/app.py

@@ -0,0 +1,611 @@
+#!/usr/bin/env python3
+"""
+AI Chat App - 后台管理服务
+端口: 19020 (与前端同一端口)
+"""
+
+from flask import Flask, jsonify, request, send_from_directory
+from flask_cors import CORS
+import os
+import json
+import sqlite3
+from datetime import datetime
+import hashlib
+
+app = Flask(__name__, static_folder='../www')
+CORS(app)
+
+# 数据库路径
+DB_PATH = os.path.join(os.path.dirname(__file__), 'data.db')
+
+# 管理员账户（默认）
+ADMIN_USERNAME = 'admin'
+ADMIN_PASSWORD_HASH = hashlib.sha256('admin123'.encode()).hexdigest()
+
+
+def get_db():
+    """获取数据库连接"""
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    return conn
+
+
+def init_db():
+    """初始化数据库"""
+    conn = get_db()
+    cursor = conn.cursor()
+    
+    # 大模型接口配置表
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS llm_configs (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            provider TEXT NOT NULL,
+            api_url TEXT NOT NULL,
+            api_key TEXT NOT NULL,
+            model TEXT NOT NULL,
+            max_tokens INTEGER DEFAULT 2048,
+            temperature REAL DEFAULT 0.7,
+            is_default INTEGER DEFAULT 0,
+            is_active INTEGER DEFAULT 1,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    ''')
+    
+    # 智能体配置表
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS agents (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            agent_id TEXT NOT NULL UNIQUE,
+            name TEXT NOT NULL,
+            avatar TEXT DEFAULT '🤖',
+            category TEXT NOT NULL,
+            description TEXT,
+            system_prompt TEXT NOT NULL,
+            llm_config_id INTEGER,
+            temperature REAL DEFAULT 0.7,
+            max_tokens INTEGER DEFAULT 2048,
+            enable_search INTEGER DEFAULT 0,
+            tags TEXT,
+            heat INTEGER DEFAULT 0,
+            is_active INTEGER DEFAULT 1,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            FOREIGN KEY (llm_config_id) REFERENCES llm_configs(id)
+        )
+    ''')
+    
+    # 搜索配置表
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS search_configs (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            provider TEXT NOT NULL,
+            api_url TEXT NOT NULL,
+            api_key TEXT NOT NULL,
+            max_results INTEGER DEFAULT 10,
+            is_default INTEGER DEFAULT 0,
+            is_active INTEGER DEFAULT 1,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    ''')
+    
+    # 系统配置表
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS system_configs (
+            key TEXT PRIMARY KEY,
+            value TEXT,
+            description TEXT,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    ''')
+    
+    # 统计日志表
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS stats_logs (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            log_type TEXT NOT NULL,
+            log_key TEXT NOT NULL,
+            log_value INTEGER DEFAULT 1,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    ''')
+    
+    # 用户表（后台管理）
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS admin_users (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            username TEXT NOT NULL UNIQUE,
+            password_hash TEXT NOT NULL,
+            role TEXT DEFAULT 'admin',
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    ''')
+    
+    # 初始化默认大模型配置
+    cursor.execute('SELECT COUNT(*) FROM llm_configs')
+    if cursor.fetchone()[0] == 0:
+        cursor.execute('''
+            INSERT INTO llm_configs (name, provider, api_url, api_key, model, is_default)
+            VALUES ('智谱GLM', 'zhipu', 'https://open.bigmodel.cn/api/paas/v4/chat/completions', 
+                    '2259e33a1357460abe17919aaf81e73d.K44a8LPQTmFM5PKm', 'glm-4.5-air', 1)
+        ''')
+    
+    # 初始化默认搜索配置
+    cursor.execute('SELECT COUNT(*) FROM search_configs')
+    if cursor.fetchone()[0] == 0:
+        cursor.execute('''
+            INSERT INTO search_configs (name, provider, api_url, api_key, is_default)
+            VALUES ('Tavily', 'tavily', 'https://api.tavily.com/search', 
+                    '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', 1)
+        ''')
+    
+    # 初始化默认智能体
+    cursor.execute('SELECT COUNT(*) FROM agents')
+    if cursor.fetchone()[0] == 0:
+        default_agents = [
+            ('assistant', '通用助手', '🤖', 'hot', '能回答各类问题，帮助写作、分析、解答疑惑', '你是一个智能助手，能够回答各类问题，帮助用户解决问题。', 9500),
+            ('writer', '写作助手', '✍️', 'hot', '专注于文章写作、文案创作、内容润色', '你是一个专业的写作助手，擅长各类文章写作、文案创作和内容润色。', 8800),
+            ('coder', '编程助手', '👨‍💻', 'hot', '精通编程语言，解答技术问题，生成代码', '你是一个专业的编程助手，精通各类编程语言，能够解答技术问题并生成高质量代码。', 8500),
+            ('translator', '翻译助手', '🌐', 'hot', '多语言翻译，精准表达，文化适配', '你是一个专业的翻译助手，精通多语言翻译，能够精准表达并适配文化差异。', 7200),
+            ('work', '工作助手', '💼', 'work', '职场问题解答，工作效率提升', '你是一个工作助手，帮助解决职场问题，提升工作效率。', 5000),
+            ('ppt', 'PPT助手', '📊', 'work', 'PPT内容生成，结构优化，设计建议', '你是一个PPT助手，擅长PPT内容生成、结构优化和设计建议。', 4500),
+            ('excel', 'Excel助手', '📈', 'work', 'Excel公式、数据分析、表格优化', '你是一个Excel助手，精通Excel公式、数据分析和表格优化。', 4000),
+            ('teacher', '学习助手', '📚', 'study', '知识讲解，学习方法，考试辅导', '你是一个学习助手，擅长知识讲解、学习方法指导和考试辅导。', 5500),
+            ('english', '英语助手', '🔤', 'study', '英语学习，语法纠正，口语练习', '你是一个英语助手，帮助英语学习、语法纠正和口语练习。', 5000),
+            ('math', '数学助手', '🔢', 'study', '数学解题，公式推导，概念讲解', '你是一个数学助手，擅长数学解题、公式推导和概念讲解。', 4500),
+            ('health', '健康助手', '🏥', 'life', '健康咨询，养生建议，运动指导', '你是一个健康助手，提供健康咨询、养生建议和运动指导。', 3500),
+            ('travel', '旅行助手', '✈️', 'life', '旅行规划，景点推荐，美食指南', '你是一个旅行助手，擅长旅行规划、景点推荐和美食指南。', 3200),
+            ('food', '美食助手', '🍳', 'life', '菜谱推荐，烹饪技巧，营养搭配', '你是一个美食助手，提供菜谱推荐、烹饪技巧和营养搭配建议。', 3000),
+        ]
+        for agent in default_agents:
+            cursor.execute('''
+                INSERT INTO agents (agent_id, name, avatar, category, description, system_prompt, heat)
+                VALUES (?, ?, ?, ?, ?, ?, ?)
+            ''', agent)
+    
+    # 初始化系统配置
+    cursor.execute('SELECT COUNT(*) FROM system_configs')
+    if cursor.fetchone()[0] == 0:
+        default_configs = [
+            ('app_name', 'AI助手', '应用名称'),
+            ('app_version', '3.5.1', '应用版本'),
+            ('llm_provider', 'zhipu', '默认大模型提供商'),
+            ('enable_search', 'true', '是否启用联网搜索'),
+            ('guest_chat_sessions', '1', '游客每日对话会话限制'),
+            ('guest_chat_messages', '20', '游客每日对话消息限制'),
+            ('guest_agent_messages', '20', '游客每日智能体消息限制'),
+            ('admin_password', 'admin123', '管理员密码'),
+        ]
+        for key, value, desc in default_configs:
+            cursor.execute('INSERT INTO system_configs (key, value, description) VALUES (?, ?, ?)', (key, value, desc))
+    
+    # 初始化管理员账户
+    cursor.execute('SELECT COUNT(*) FROM admin_users')
+    if cursor.fetchone()[0] == 0:
+        cursor.execute('INSERT INTO admin_users (username, password_hash) VALUES (?, ?', 
+                       (ADMIN_USERNAME, ADMIN_PASSWORD_HASH))
+    
+    conn.commit()
+    conn.close()
+
+
+# ==================== 前端静态文件服务 ====================
+
+@app.route('/')
+def index():
+    """前端首页"""
+    return send_from_directory(app.static_folder, 'index.html')
+
+
+@app.route('/admin')
+def admin():
+    """后台管理页面"""
+    return send_from_directory(app.static_folder, 'admin.html')
+
+
+@app.route('/admin/<path:path>')
+def admin_static(path):
+    """后台管理静态文件"""
+    return send_from_directory(app.static_folder, path)
+
+
+@app.route('/<path:path>')
+def static_files(path):
+    """前端静态文件"""
+    return send_from_directory(app.static_folder, path)
+
+
+# ==================== 后台管理 API ====================
+
+# 管理员登录验证
+def check_admin_auth():
+    """检查管理员权限"""
+    auth = request.authorization
+    if not auth:
+        return False
+    password_hash = hashlib.sha256(auth.password.encode()).hexdigest()
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('SELECT * FROM admin_users WHERE username = ? AND password_hash = ?', 
+                   (auth.username, password_hash))
+    user = cursor.fetchone()
+    conn.close()
+    return user is not None
+
+
+@app.route('/api/admin/login', methods=['POST'])
+def admin_login():
+    """管理员登录"""
+    data = request.json
+    username = data.get('username')
+    password = data.get('password')
+    
+    if not username or not password:
+        return jsonify({'error': '请输入用户名和密码'}), 400
+    
+    password_hash = hashlib.sha256(password.encode()).hexdigest()
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('SELECT * FROM admin_users WHERE username = ? AND password_hash = ?', 
+                   (username, password_hash))
+    user = cursor.fetchone()
+    conn.close()
+    
+    if user:
+        return jsonify({'success': True, 'message': '登录成功'})
+    else:
+        return jsonify({'error': '用户名或密码错误'}), 401
+
+
+# ==================== 大模型接口管理 ====================
+
+@app.route('/api/admin/llm', methods=['GET'])
+def get_llm_configs():
+    """获取所有大模型配置"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('SELECT * FROM llm_configs ORDER BY is_default DESC, created_at DESC')
+    configs = [dict(row) for row in cursor.fetchall()]
+    conn.close()
+    return jsonify(configs)
+
+
+@app.route('/api/admin/llm', methods=['POST'])
+def add_llm_config():
+    """添加大模型配置"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        INSERT INTO llm_configs (name, provider, api_url, api_key, model, max_tokens, temperature)
+        VALUES (?, ?, ?, ?, ?, ?, ?)
+    ''', (data['name'], data['provider'], data['api_url'], data['api_key'], 
+          data['model'], data.get('max_tokens', 2048), data.get('temperature', 0.7)))
+    conn.commit()
+    config_id = cursor.lastrowid
+    conn.close()
+    return jsonify({'success': True, 'id': config_id})
+
+
+@app.route('/api/admin/llm/<int:id>', methods=['PUT'])
+def update_llm_config(id):
+    """更新大模型配置"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        UPDATE llm_configs SET name=?, provider=?, api_url=?, api_key=?, model=?, 
+        max_tokens=?, temperature=?, updated_at=CURRENT_TIMESTAMP WHERE id=?
+    ''', (data['name'], data['provider'], data['api_url'], data['api_key'], 
+          data['model'], data.get('max_tokens', 2048), data.get('temperature', 0.7), id))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/llm/<int:id>', methods=['DELETE'])
+def delete_llm_config(id):
+    """删除大模型配置"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('DELETE FROM llm_configs WHERE id=?', (id,))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/llm/<int:id>/default', methods=['POST'])
+def set_default_llm(id):
+    """设置默认大模型"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('UPDATE llm_configs SET is_default=0')
+    cursor.execute('UPDATE llm_configs SET is_default=1 WHERE id=?', (id,))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+# ==================== 智能体管理 ====================
+
+@app.route('/api/admin/agents', methods=['GET'])
+def get_agents():
+    """获取所有智能体"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('SELECT * FROM agents ORDER BY category, heat DESC')
+    agents = [dict(row) for row in cursor.fetchall()]
+    conn.close()
+    return jsonify(agents)
+
+
+@app.route('/api/admin/agents', methods=['POST'])
+def add_agent():
+    """添加智能体"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        INSERT INTO agents (agent_id, name, avatar, category, description, system_prompt, 
+        llm_config_id, temperature, max_tokens, enable_search, tags, heat)
+        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    ''', (data['agent_id'], data['name'], data.get('avatar', '🤖'), data['category'], 
+          data.get('description', ''), data['system_prompt'], data.get('llm_config_id'),
+          data.get('temperature', 0.7), data.get('max_tokens', 2048), 
+          data.get('enable_search', 0), data.get('tags', ''), data.get('heat', 0)))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/agents/<agent_id>', methods=['PUT'])
+def update_agent(agent_id):
+    """更新智能体"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        UPDATE agents SET name=?, avatar=?, category=?, description=?, system_prompt=?, 
+        llm_config_id=?, temperature=?, max_tokens=?, enable_search=?, tags=?, heat=?, 
+        updated_at=CURRENT_TIMESTAMP WHERE agent_id=?
+    ''', (data['name'], data.get('avatar', '🤖'), data['category'], 
+          data.get('description', ''), data['system_prompt'], data.get('llm_config_id'),
+          data.get('temperature', 0.7), data.get('max_tokens', 2048), 
+          data.get('enable_search', 0), data.get('tags', ''), data.get('heat', 0), agent_id))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/agents/<agent_id>', methods=['DELETE'])
+def delete_agent(agent_id):
+    """删除智能体"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('DELETE FROM agents WHERE agent_id=?', (agent_id,))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+# ==================== 搜索配置管理 ====================
+
+@app.route('/api/admin/search', methods=['GET'])
+def get_search_configs():
+    """获取搜索配置"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('SELECT * FROM search_configs ORDER BY is_default DESC')
+    configs = [dict(row) for row in cursor.fetchall()]
+    conn.close()
+    return jsonify(configs)
+
+
+@app.route('/api/admin/search', methods=['POST'])
+def add_search_config():
+    """添加搜索配置"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        INSERT INTO search_configs (name, provider, api_url, api_key, max_results)
+        VALUES (?, ?, ?, ?, ?)
+    ''', (data['name'], data['provider'], data['api_url'], data['api_key'], 
+          data.get('max_results', 10)))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/search/<int:id>', methods=['PUT'])
+def update_search_config(id):
+    """更新搜索配置"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('''
+        UPDATE search_configs SET name=?, provider=?, api_url=?, api_key=?, max_results=?, 
+        updated_at=CURRENT_TIMESTAMP WHERE id=?
+    ''', (data['name'], data['provider'], data['api_url'], data['api_key'], 
+          data.get('max_results', 10), id))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/search/<int:id>', methods=['DELETE'])
+def delete_search_config(id):
+    """删除搜索配置"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('DELETE FROM search_configs WHERE id=?', (id,))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+@app.route('/api/admin/search/<int:id>/default', methods=['POST'])
+def set_default_search(id):
+    """设置默认搜索"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('UPDATE search_configs SET is_default=0')
+    cursor.execute('UPDATE search_configs SET is_default=1 WHERE id=?', (id,))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+# ==================== 系统配置管理 ====================
+
+@app.route('/api/admin/system', methods=['GET'])
+def get_system_configs():
+    """获取系统配置"""
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('SELECT * FROM system_configs')
+    configs = {row['key']: {'value': row['value'], 'description': row['description']} 
+               for row in cursor.fetchall()}
+    conn.close()
+    return jsonify(configs)
+
+
+@app.route('/api/admin/system', methods=['POST'])
+def update_system_config():
+    """更新系统配置"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    for key, value in data.items():
+        cursor.execute('''
+            UPDATE system_configs SET value=?, updated_at=CURRENT_TIMESTAMP WHERE key=?
+        ''', (value, key))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+# ==================== 统计信息 ====================
+
+@app.route('/api/admin/stats', methods=['GET'])
+def get_stats():
+    """获取统计信息"""
+    conn = get_db()
+    cursor = conn.cursor()
+    
+    # 今日统计
+    today = datetime.now().strftime('%Y-%m-%d')
+    
+    # 各类型统计
+    stats = {}
+    
+    # LLM调用统计
+    cursor.execute('SELECT SUM(log_value) FROM stats_logs WHERE log_type="llm_call"')
+    stats['llm_total_calls'] = cursor.fetchone()[0] or 0
+    
+    cursor.execute('SELECT SUM(log_value) FROM stats_logs WHERE log_type="llm_call" AND created_at >= ?', (today,))
+    stats['llm_today_calls'] = cursor.fetchone()[0] or 0
+    
+    # 搜索统计
+    cursor.execute('SELECT SUM(log_value) FROM stats_logs WHERE log_type="search_call"')
+    stats['search_total_calls'] = cursor.fetchone()[0] or 0
+    
+    cursor.execute('SELECT SUM(log_value) FROM stats_logs WHERE log_type="search_call" AND created_at >= ?', (today,))
+    stats['search_today_calls'] = cursor.fetchone()[0] or 0
+    
+    # 智能体使用统计
+    cursor.execute('''
+        SELECT log_key, SUM(log_value) as count FROM stats_logs 
+        WHERE log_type="agent_use" GROUP BY log_key ORDER BY count DESC LIMIT 10
+    ''')
+    stats['agent_usage'] = [dict(row) for row in cursor.fetchall()]
+    
+    # 用户统计
+    cursor.execute('SELECT COUNT(*) FROM stats_logs WHERE log_type="user_register"')
+    stats['total_users'] = cursor.fetchone()[0] or 0
+    
+    # 智能体数量
+    cursor.execute('SELECT COUNT(*) FROM agents WHERE is_active=1')
+    stats['agent_count'] = cursor.fetchone()[0]
+    
+    # LLM配置数量
+    cursor.execute('SELECT COUNT(*) FROM llm_configs WHERE is_active=1')
+    stats['llm_count'] = cursor.fetchone()[0]
+    
+    conn.close()
+    return jsonify(stats)
+
+
+@app.route('/api/admin/stats/log', methods=['POST'])
+def log_stats():
+    """记录统计日志"""
+    data = request.json
+    conn = get_db()
+    cursor = conn.cursor()
+    cursor.execute('INSERT INTO stats_logs (log_type, log_key, log_value) VALUES (?, ?, ?)',
+                   (data['type'], data.get('key', ''), data.get('value', 1)))
+    conn.commit()
+    conn.close()
+    return jsonify({'success': True})
+
+
+# ==================== 前端配置获取 ====================
+
+@app.route('/api/config', methods=['GET'])
+def get_frontend_config():
+    """获取前端使用的配置"""
+    conn = get_db()
+    cursor = conn.cursor()
+    
+    # 获取默认LLM配置
+    cursor.execute('SELECT * FROM llm_configs WHERE is_default=1 AND is_active=1 LIMIT 1')
+    llm = cursor.fetchone()
+    
+    # 获取默认搜索配置
+    cursor.execute('SELECT * FROM search_configs WHERE is_default=1 AND is_active=1 LIMIT 1')
+    search = cursor.fetchone()
+    
+    # 获取所有智能体
+    cursor.execute('SELECT agent_id, name, avatar, category, description, system_prompt, heat FROM agents WHERE is_active=1')
+    agents = [dict(row) for row in cursor.fetchall()]
+    
+    # 获取系统配置
+    cursor.execute('SELECT key, value FROM system_configs')
+    system = {row['key']: row['value'] for row in cursor.fetchall()}
+    
+    conn.close()
+    
+    config = {
+        'llm': dict(llm) if llm else None,
+        'search': dict(search) if search else None,
+        'agents': agents,
+        'system': {
+            'appName': system.get('app_name', 'AI助手'),
+            'version': system.get('app_version', '3.5.1'),
+            'enableSearch': system.get('enable_search', 'true') == 'true',
+            'guestLimits': {
+                'chatSessions': int(system.get('guest_chat_sessions', '1')),
+                'chatMessages': int(system.get('guest_chat_messages', '20')),
+                'agentMessages': int(system.get('guest_agent_messages', '20')),
+            }
+        }
+    }
+    
+    return jsonify(config)
+
+
+# ==================== 启动 ====================
+
+if __name__ == '__main__':
+    # 初始化数据库
+    init_db()
+    
+    # 启动服务
+    print('🚀 AI Chat App Backend started on http://localhost:19020')
+    print('📊 Admin Panel: http://localhost:19020/admin')
+    print('👤 Default admin: admin / admin123')
+    
+    app.run(host='0.0.0.0', port=19020, debug=True)

backend/requirements.txt

@@ -0,0 +1,2 @@
+flask>=2.0.0
+flask-cors>=3.0.0

backend/start.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+cd "$(dirname "$0")"
+pip install -r requirements.txt -q
+python app.py

www/admin.html

@@ -0,0 +1,471 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>AI助手 - 后台管理</title>
+  <style>
+    :root {
+      --primary: #667eea;
+      --primary-dark: #5a67d8;
+      --bg-color: #f5f7fa;
+      --card-bg: #ffffff;
+      --text-color: #2d3748;
+      --text-light: #718096;
+      --border-color: #e2e8f0;
+      --danger: #e53e3e;
+      --success: #22c55e;
+      --warning: #f59e0b;
+    }
+    
+    * {
+      margin: 0;
+      padding: 0;
+      box-sizing: border-box;
+    }
+    
+    body {
+      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+      background: var(--bg-color);
+      color: var(--text-color);
+      line-height: 1.6;
+    }
+    
+    /* 登录页面 */
+    .login-page {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      height: 100vh;
+      background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
+    }
+    
+    .login-card {
+      background: white;
+      padding: 40px;
+      border-radius: 16px;
+      width: 350px;
+      text-align: center;
+    }
+    
+    .login-logo {
+      font-size: 48px;
+      margin-bottom: 16px;
+    }
+    
+    .login-title {
+      font-size: 24px;
+      font-weight: 600;
+      margin-bottom: 24px;
+    }
+    
+    .login-input {
+      width: 100%;
+      padding: 12px 16px;
+      border: 2px solid var(--border-color);
+      border-radius: 10px;
+      font-size: 16px;
+      margin-bottom: 16px;
+      outline: none;
+    }
+    
+    .login-input:focus {
+      border-color: var(--primary);
+    }
+    
+    .login-btn {
+      width: 100%;
+      padding: 14px;
+      background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
+      color: white;
+      border: none;
+      border-radius: 10px;
+      font-size: 16px;
+      font-weight: 500;
+      cursor: pointer;
+      margin-top: 8px;
+    }
+    
+    .login-btn:hover {
+      opacity: 0.9;
+    }
+    
+    /* 主页面 */
+    .admin-page {
+      display: none;
+    }
+    
+    .admin-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding: 16px 24px;
+      background: white;
+      border-bottom: 1px solid var(--border-color);
+    }
+    
+    .admin-logo {
+      display: flex;
+      align-items: center;
+      gap: 8px;
+      font-size: 20px;
+      font-weight: 600;
+    }
+    
+    .admin-logo span {
+      font-size: 28px;
+    }
+    
+    .admin-header-right {
+      display: flex;
+      align-items: center;
+      gap: 16px;
+    }
+    
+    .admin-logout {
+      padding: 8px 16px;
+      background: var(--danger);
+      color: white;
+      border: none;
+      border-radius: 6px;
+      cursor: pointer;
+    }
+    
+    /* 侧边栏 */
+    .admin-container {
+      display: flex;
+      height: calc(100vh - 60px);
+    }
+    
+    .admin-sidebar {
+      width: 220px;
+      background: white;
+      border-right: 1px solid var(--border-color);
+      padding: 16px;
+    }
+    
+    .sidebar-item {
+      display: flex;
+      align-items: center;
+      gap: 12px;
+      padding: 12px 16px;
+      border-radius: 8px;
+      cursor: pointer;
+      transition: all 0.2s;
+      margin-bottom: 4px;
+    }
+    
+    .sidebar-item:hover {
+      background: rgba(102, 126, 234, 0.1);
+    }
+    
+    .sidebar-item.active {
+      background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
+      color: white;
+    }
+    
+    .sidebar-icon {
+      font-size: 20px;
+    }
+    
+    /* 内容区 */
+    .admin-content {
+      flex: 1;
+      padding: 24px;
+      overflow-y: auto;
+    }
+    
+    .content-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      margin-bottom: 24px;
+    }
+    
+    .content-title {
+      font-size: 24px;
+      font-weight: 600;
+    }
+    
+    .add-btn {
+      padding: 10px 20px;
+      background: var(--primary);
+      color: white;
+      border: none;
+      border-radius: 8px;
+      cursor: pointer;
+    }
+    
+    /* 数据卡片 */
+    .stats-grid {
+      display: grid;
+      grid-template-columns: repeat(4, 1fr);
+      gap: 16px;
+      margin-bottom: 24px;
+    }
+    
+    .stat-card {
+      background: white;
+      padding: 20px;
+      border-radius: 12px;
+      text-align: center;
+    }
+    
+    .stat-icon {
+      font-size: 32px;
+      margin-bottom: 8px;
+    }
+    
+    .stat-value {
+      font-size: 28px;
+      font-weight: 600;
+      color: var(--primary);
+    }
+    
+    .stat-label {
+      font-size: 14px;
+      color: var(--text-light);
+    }
+    
+    /* 数据表格 */
+    .data-table {
+      background: white;
+      border-radius: 12px;
+      overflow: hidden;
+    }
+    
+    .data-table table {
+      width: 100%;
+      border-collapse: collapse;
+    }
+    
+    .data-table th, .data-table td {
+      padding: 14px 16px;
+      text-align: left;
+      border-bottom: 1px solid var(--border-color);
+    }
+    
+    .data-table th {
+      background: var(--bg-color);
+      font-weight: 600;
+      color: var(--text-light);
+    }
+    
+    .data-table tr:last-child td {
+      border-bottom: none;
+    }
+    
+    .data-table tr:hover td {
+      background: rgba(102, 126, 234, 0.05);
+    }
+    
+    /* 操作按钮 */
+    .action-btns {
+      display: flex;
+      gap: 8px;
+    }
+    
+    .action-btn {
+      padding: 6px 12px;
+      border: none;
+      border-radius: 6px;
+      cursor: pointer;
+      font-size: 12px;
+    }
+    
+    .action-btn.edit {
+      background: var(--primary);
+      color: white;
+    }
+    
+    .action-btn.delete {
+      background: var(--danger);
+      color: white;
+    }
+    
+    .action-btn.default {
+      background: var(--success);
+      color: white;
+    }
+    
+    /* 默认标记 */
+    .default-badge {
+      padding: 4px 8px;
+      background: var(--success);
+      color: white;
+      border-radius: 4px;
+      font-size: 12px;
+    }
+    
+    /* 模态框 */
+    .modal {
+      position: fixed;
+      inset: 0;
+      background: rgba(0,0,0,0.5);
+      display: none;
+      align-items: center;
+      justify-content: center;
+      z-index: 1000;
+    }
+    
+    .modal.show {
+      display: flex;
+    }
+    
+    .modal-content {
+      background: white;
+      padding: 24px;
+      border-radius: 16px;
+      max-width: 500px;
+      width: 90%;
+    }
+    
+    .modal-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      margin-bottom: 24px;
+    }
+    
+    .modal-title {
+      font-size: 20px;
+      font-weight: 600;
+    }
+    
+    .modal-close {
+      font-size: 24px;
+      cursor: pointer;
+      color: var(--text-light);
+    }
+    
+    .form-group {
+      margin-bottom: 16px;
+    }
+    
+    .form-label {
+      display: block;
+      font-size: 14px;
+      font-weight: 500;
+      margin-bottom: 8px;
+    }
+    
+    .form-input, .form-select, .form-textarea {
+      width: 100%;
+      padding: 12px;
+      border: 1px solid var(--border-color);
+      border-radius: 8px;
+      font-size: 14px;
+      outline: none;
+    }
+    
+    .form-input:focus, .form-select:focus, .form-textarea:focus {
+      border-color: var(--primary);
+    }
+    
+    .form-textarea {
+      resize: vertical;
+      min-height: 100px;
+    }
+    
+    .form-submit {
+      width: 100%;
+      padding: 14px;
+      background: var(--primary);
+      color: white;
+      border: none;
+      border-radius: 8px;
+      font-size: 16px;
+      cursor: pointer;
+      margin-top: 16px;
+    }
+    
+    /* Toast */
+    .toast {
+      position: fixed;
+      top: 80px;
+      left: 50%;
+      transform: translateX(-50%);
+      background: var(--text-color);
+      color: white;
+      padding: 12px 24px;
+      border-radius: 8px;
+      font-size: 14px;
+      opacity: 0;
+      transition: opacity 0.3s;
+      z-index: 2000;
+    }
+    
+    .toast.show {
+      opacity: 1;
+    }
+  </style>
+</head>
+<body>
+  <!-- 登录页面 -->
+  <div class="login-page" id="loginPage">
+    <div class="login-card">
+      <div class="login-logo">🤖</div>
+      <h1 class="login-title">后台管理系统</h1>
+      <input type="text" class="login-input" id="loginUsername" placeholder="用户名">
+      <input type="password" class="login-input" id="loginPassword" placeholder="密码">
+      <button class="login-btn" id="loginBtn">登录</button>
+      <p style="margin-top: 16px; color: #999; font-size: 12px;">默认: admin / admin123</p>
+    </div>
+  </div>
+  
+  <!-- 管理页面 -->
+  <div class="admin-page" id="adminPage">
+    <header class="admin-header">
+      <div class="admin-logo">
+        <span>🤖</span>
+        AI助手 - 后台管理
+      </div>
+      <div class="admin-header-right">
+        <span id="adminName">管理员</span>
+        <button class="admin-logout" id="logoutBtn">退出</button>
+      </div>
+    </header>
+    
+    <div class="admin-container">
+      <aside class="admin-sidebar">
+        <div class="sidebar-item active" data-page="stats">
+          <span class="sidebar-icon">📊</span>
+          <span>统计信息</span>
+        </div>
+        <div class="sidebar-item" data-page="llm">
+          <span class="sidebar-icon">🧠</span>
+          <span>大模型配置</span>
+        </div>
+        <div class="sidebar-item" data-page="agents">
+          <span class="sidebar-icon">🤖</span>
+          <span>智能体管理</span>
+        </div>
+        <div class="sidebar-item" data-page="search">
+          <span class="sidebar-icon">🔍</span>
+          <span>搜索配置</span>
+        </div>
+        <div class="sidebar-item" data-page="system">
+          <span class="sidebar-icon">⚙️</span>
+          <span>系统设置</span>
+        </div>
+      </aside>
+      
+      <main class="admin-content" id="mainContent">
+        <!-- 内容区动态加载 -->
+      </main>
+    </div>
+  </div>
+  
+  <!-- Toast -->
+  <div class="toast" id="toast"></div>
+  
+  <!-- 模态框 -->
+  <div class="modal" id="modal">
+    <div class="modal-content" id="modalContent">
+      <!-- 动态内容 -->
+    </div>
+  </div>
+  
+  <script src="admin.js?v=1.0.0"></script>
+</body>
+</html>

www/admin.js

@@ -0,0 +1,865 @@
+// AI助手 - 后台管理前端
+
+const API_BASE = '';
+
+let currentPage = 'stats';
+let llmConfigs = [];
+let agents = [];
+let searchConfigs = [];
+let systemConfigs = {};
+
+// ==================== 登录 ====================
+
+document.getElementById('loginBtn').addEventListener('click', async () => {
+  const username = document.getElementById('loginUsername').value.trim();
+  const password = document.getElementById('loginPassword').value;
+  
+  if (!username || !password) {
+    showToast('请输入用户名和密码');
+    return;
+  }
+  
+  try {
+    const res = await fetch(`${API_BASE}/api/admin/login`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ username, password })
+    });
+    
+    const data = await res.json();
+    
+    if (data.success) {
+      localStorage.setItem('adminLoggedIn', 'true');
+      localStorage.setItem('adminUsername', username);
+      document.getElementById('loginPage').style.display = 'none';
+      document.getElementById('adminPage').style.display = 'block';
+      document.getElementById('adminName').textContent = username;
+      loadPage('stats');
+    } else {
+      showToast(data.error || '登录失败');
+    }
+  } catch (e) {
+    showToast('登录失败，请检查网络');
+  }
+});
+
+// 检查登录状态
+if (localStorage.getItem('adminLoggedIn') === 'true') {
+  document.getElementById('loginPage').style.display = 'none';
+  document.getElementById('adminPage').style.display = 'block';
+  document.getElementById('adminName').textContent = localStorage.getItem('adminUsername');
+  loadPage('stats');
+}
+
+// 退出登录
+document.getElementById('logoutBtn').addEventListener('click', () => {
+  localStorage.removeItem('adminLoggedIn');
+  localStorage.removeItem('adminUsername');
+  document.getElementById('adminPage').style.display = 'none';
+  document.getElementById('loginPage').style.display = 'flex';
+});
+
+// ==================== 侧边栏导航 ====================
+
+document.querySelectorAll('.sidebar-item').forEach(item => {
+  item.addEventListener('click', () => {
+    const page = item.getAttribute('data-page');
+    document.querySelectorAll('.sidebar-item').forEach(i => i.classList.remove('active'));
+    item.classList.add('active');
+    loadPage(page);
+  });
+});
+
+// ==================== 页面加载 ====================
+
+async function loadPage(page) {
+  currentPage = page;
+  const content = document.getElementById('mainContent');
+  
+  switch (page) {
+    case 'stats':
+      await loadStatsPage(content);
+      break;
+    case 'llm':
+      await loadLLMPage(content);
+      break;
+    case 'agents':
+      await loadAgentsPage(content);
+      break;
+    case 'search':
+      await loadSearchPage(content);
+      break;
+    case 'system':
+      await loadSystemPage(content);
+      break;
+  }
+}
+
+// ==================== 统计页面 ====================
+
+async function loadStatsPage(content) {
+  const stats = await fetchAPI('/api/admin/stats');
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">统计信息</h1>
+    </div>
+    
+    <div class="stats-grid">
+      <div class="stat-card">
+        <div class="stat-icon">🧠</div>
+        <div class="stat-value">${stats.llm_total_calls || 0}</div>
+        <div class="stat-label">LLM 总调用</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">📊</div>
+        <div class="stat-value">${stats.llm_today_calls || 0}</div>
+        <div class="stat-label">今日 LLM 调用</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">🔍</div>
+        <div class="stat-value">${stats.search_total_calls || 0}</div>
+        <div class="stat-label">搜索总调用</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">📈</div>
+        <div class="stat-value">${stats.search_today_calls || 0}</div>
+        <div class="stat-label">今日搜索</div>
+      </div>
+    </div>
+    
+    <div class="stats-grid">
+      <div class="stat-card">
+        <div class="stat-icon">🤖</div>
+        <div class="stat-value">${stats.agent_count || 0}</div>
+        <div class="stat-label">智能体数量</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">🧠</div>
+        <div class="stat-value">${stats.llm_count || 0}</div>
+        <div class="stat-label">LLM 配置数量</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">👥</div>
+        <div class="stat-value">${stats.total_users || 0}</div>
+        <div class="stat-label">注册用户数</div>
+      </div>
+      <div class="stat-card">
+        <div class="stat-icon">📅</div>
+        <div class="stat-value">${new Date().toLocaleDateString()}</div>
+        <div class="stat-label">统计日期</div>
+      </div>
+    </div>
+    
+    <div class="data-table" style="margin-top: 24px;">
+      <h3 style="padding: 16px; background: var(--bg-color);">热门智能体使用排行</h3>
+      <table>
+        <thead>
+          <tr>
+            <th>智能体</th>
+            <th>使用次数</th>
+          </tr>
+        </thead>
+        <tbody>
+          ${stats.agent_usage?.map(a => `
+            <tr>
+              <td>${a.log_key}</td>
+              <td>${a.count}</td>
+            </tr>
+          `).join('') || '<tr><td colspan="2">暂无数据</td></tr>'}
+        </tbody>
+      </table>
+    </div>
+  `;
+}
+
+// ==================== 大模型配置页面 ====================
+
+async function loadLLMPage(content) {
+  llmConfigs = await fetchAPI('/api/admin/llm');
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">大模型配置</h1>
+      <button class="add-btn" onclick="showAddLLMModal()">+ 添加配置</button>
+    </div>
+    
+    <div class="data-table">
+      <table>
+        <thead>
+          <tr>
+            <th>名称</th>
+            <th>提供商</th>
+            <th>模型</th>
+            <th>API URL</th>
+            <th>状态</th>
+            <th>操作</th>
+          </tr>
+        </thead>
+        <tbody>
+          ${llmConfigs.map(c => `
+            <tr>
+              <td>${c.name} ${c.is_default ? '<span class="default-badge">默认</span>' : ''}</td>
+              <td>${c.provider}</td>
+              <td>${c.model}</td>
+              <td style="max-width: 200px; overflow: hidden; text-overflow: ellipsis;">${c.api_url}</td>
+              <td>${c.is_active ? '✅ 启用' : '❌ 禁用'}</td>
+              <td>
+                <div class="action-btns">
+                  <button class="action-btn edit" onclick="showEditLLMModal(${c.id})">编辑</button>
+                  ${!c.is_default ? `<button class="action-btn default" onclick="setDefaultLLM(${c.id})">设为默认</button>` : ''}
+                  <button class="action-btn delete" onclick="deleteLLM(${c.id})">删除</button>
+                </div>
+              </td>
+            </tr>
+          `).join('')}
+        </tbody>
+      </table>
+    </div>
+  `;
+}
+
+function showAddLLMModal() {
+  showModal('添加大模型配置', `
+    <div class="form-group">
+      <label class="form-label">名称</label>
+      <input type="text" class="form-input" id="llmName" placeholder="如：智谱GLM">
+    </div>
+    <div class="form-group">
+      <label class="form-label">提供商</label>
+      <select class="form-select" id="llmProvider">
+        <option value="zhipu">智谱</option>
+        <option value="openai">OpenAI</option>
+        <option value="anthropic">Anthropic</option>
+        <option value="custom">自定义</option>
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">API URL</label>
+      <input type="text" class="form-input" id="llmApiUrl" placeholder="API endpoint URL">
+    </div>
+    <div class="form-group">
+      <label class="form-label">API Key</label>
+      <input type="text" class="form-input" id="llmApiKey" placeholder="API Key">
+    </div>
+    <div class="form-group">
+      <label class="form-label">模型</label>
+      <input type="text" class="form-input" id="llmModel" placeholder="如：glm-4.5-air">
+    </div>
+    <div class="form-group">
+      <label class="form-label">Max Tokens</label>
+      <input type="number" class="form-input" id="llmMaxTokens" value="2048">
+    </div>
+    <div class="form-group">
+      <label class="form-label">Temperature</label>
+      <input type="number" class="form-input" id="llmTemperature" value="0.7" step="0.1">
+    </div>
+    <button class="form-submit" onclick="saveLLM()">保存</button>
+  `);
+}
+
+function showEditLLMModal(id) {
+  const config = llmConfigs.find(c => c.id === id);
+  if (!config) return;
+  
+  showModal('编辑大模型配置', `
+    <div class="form-group">
+      <label class="form-label">名称</label>
+      <input type="text" class="form-input" id="llmName" value="${config.name}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">提供商</label>
+      <select class="form-select" id="llmProvider">
+        <option value="zhipu" ${config.provider === 'zhipu' ? 'selected' : ''}>智谱</option>
+        <option value="openai" ${config.provider === 'openai' ? 'selected' : ''}>OpenAI</option>
+        <option value="anthropic" ${config.provider === 'anthropic' ? 'selected' : ''}>Anthropic</option>
+        <option value="custom" ${config.provider === 'custom' ? 'selected' : ''}>自定义</option>
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">API URL</label>
+      <input type="text" class="form-input" id="llmApiUrl" value="${config.api_url}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">API Key</label>
+      <input type="text" class="form-input" id="llmApiKey" value="${config.api_key}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">模型</label>
+      <input type="text" class="form-input" id="llmModel" value="${config.model}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">Max Tokens</label>
+      <input type="number" class="form-input" id="llmMaxTokens" value="${config.max_tokens}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">Temperature</label>
+      <input type="number" class="form-input" id="llmTemperature" value="${config.temperature}" step="0.1">
+    </div>
+    <button class="form-submit" onclick="updateLLM(${id})">保存</button>
+  `);
+}
+
+async function saveLLM() {
+  const data = {
+    name: document.getElementById('llmName').value,
+    provider: document.getElementById('llmProvider').value,
+    api_url: document.getElementById('llmApiUrl').value,
+    api_key: document.getElementById('llmApiKey').value,
+    model: document.getElementById('llmModel').value,
+    max_tokens: parseInt(document.getElementById('llmMaxTokens').value),
+    temperature: parseFloat(document.getElementById('llmTemperature').value)
+  };
+  
+  if (!data.name || !data.api_url || !data.api_key || !data.model) {
+    showToast('请填写完整信息');
+    return;
+  }
+  
+  await fetchAPI('/api/admin/llm', 'POST', data);
+  closeModal();
+  showToast('添加成功');
+  loadPage('llm');
+}
+
+async function updateLLM(id) {
+  const data = {
+    name: document.getElementById('llmName').value,
+    provider: document.getElementById('llmProvider').value,
+    api_url: document.getElementById('llmApiUrl').value,
+    api_key: document.getElementById('llmApiKey').value,
+    model: document.getElementById('llmModel').value,
+    max_tokens: parseInt(document.getElementById('llmMaxTokens').value),
+    temperature: parseFloat(document.getElementById('llmTemperature').value)
+  };
+  
+  await fetchAPI(`/api/admin/llm/${id}`, 'PUT', data);
+  closeModal();
+  showToast('更新成功');
+  loadPage('llm');
+}
+
+async function setDefaultLLM(id) {
+  await fetchAPI(`/api/admin/llm/${id}/default`, 'POST');
+  showToast('已设为默认');
+  loadPage('llm');
+}
+
+async function deleteLLM(id) {
+  if (!confirm('确定删除此配置？')) return;
+  await fetchAPI(`/api/admin/llm/${id}`, 'DELETE');
+  showToast('删除成功');
+  loadPage('llm');
+}
+
+// ==================== 智能体管理页面 ====================
+
+async function loadAgentsPage(content) {
+  agents = await fetchAPI('/api/admin/agents');
+  llmConfigs = await fetchAPI('/api/admin/llm');
+  
+  const categories = {
+    hot: '热门',
+    work: '工作',
+    study: '学习',
+    life: '生活'
+  };
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">智能体管理</h1>
+      <button class="add-btn" onclick="showAddAgentModal()">+ 添加智能体</button>
+    </div>
+    
+    <div class="data-table">
+      <table>
+        <thead>
+          <tr>
+            <th>头像</th>
+            <th>名称</th>
+            <th>类别</th>
+            <th>描述</th>
+            <th>热度</th>
+            <th>状态</th>
+            <th>操作</th>
+          </tr>
+        </thead>
+        <tbody>
+          ${agents.map(a => `
+            <tr>
+              <td style="font-size: 24px;">${a.avatar}</td>
+              <td>${a.name}</td>
+              <td>${categories[a.category] || a.category}</td>
+              <td style="max-width: 200px; overflow: hidden; text-overflow: ellipsis;">${a.description || '-'}</td>
+              <td>${a.heat || 0}</td>
+              <td>${a.is_active ? '✅ 启用' : '❌ 禁用'}</td>
+              <td>
+                <div class="action-btns">
+                  <button class="action-btn edit" onclick="showEditAgentModal('${a.agent_id}')">编辑</button>
+                  <button class="action-btn delete" onclick="deleteAgent('${a.agent_id}')">删除</button>
+                </div>
+              </td>
+            </tr>
+          `).join('')}
+        </tbody>
+      </table>
+    </div>
+  `;
+}
+
+function showAddAgentModal() {
+  showModal('添加智能体', `
+    <div class="form-group">
+      <label class="form-label">ID</label>
+      <input type="text" class="form-input" id="agentId" placeholder="如：assistant">
+    </div>
+    <div class="form-group">
+      <label class="form-label">名称</label>
+      <input type="text" class="form-input" id="agentName" placeholder="如：通用助手">
+    </div>
+    <div class="form-group">
+      <label class="form-label">头像</label>
+      <select class="form-select" id="agentAvatar">
+        ${['🤖', '✍️', '👨‍💻', '🌐', '💼', '📊', '📈', '📚', '🔤', '🔢', '🏥', '✈️', '🍳', '🧑', '😊', '😎', '🤓', '🦸', '🧙', '🥷'].map(a => 
+          `<option value="${a}">${a}</option>`
+        ).join('')}
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">类别</label>
+      <select class="form-select" id="agentCategory">
+        <option value="hot">热门</option>
+        <option value="work">工作</option>
+        <option value="study">学习</option>
+        <option value="life">生活</option>
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">描述</label>
+      <input type="text" class="form-input" id="agentDescription" placeholder="智能体描述">
+    </div>
+    <div class="form-group">
+      <label class="form-label">System Prompt</label>
+      <textarea class="form-textarea" id="agentPrompt" placeholder="系统提示词"></textarea>
+    </div>
+    <div class="form-group">
+      <label class="form-label">LLM配置</label>
+      <select class="form-select" id="agentLLM">
+        <option value="">使用默认</option>
+        ${llmConfigs.map(c => `<option value="${c.id}">${c.name}</option>`).join('')}
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">热度</label>
+      <input type="number" class="form-input" id="agentHeat" value="0">
+    </div>
+    <div class="form-group">
+      <label class="form-label">标签</label>
+      <input type="text" class="form-input" id="agentTags" placeholder="多个标签用逗号分隔">
+    </div>
+    <div class="form-group">
+      <label style="display: flex; align-items: center; gap: 8px;">
+        <input type="checkbox" id="agentEnableSearch"> 启用联网搜索
+      </label>
+    </div>
+    <button class="form-submit" onclick="saveAgent()">保存</button>
+  `);
+}
+
+function showEditAgentModal(agentId) {
+  const agent = agents.find(a => a.agent_id === agentId);
+  if (!agent) return;
+  
+  showModal('编辑智能体', `
+    <div class="form-group">
+      <label class="form-label">ID（不可修改）</label>
+      <input type="text" class="form-input" id="agentId" value="${agent.agent_id}" readonly style="background: #f5f7fa;">
+    </div>
+    <div class="form-group">
+      <label class="form-label">名称</label>
+      <input type="text" class="form-input" id="agentName" value="${agent.name}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">头像</label>
+      <select class="form-select" id="agentAvatar">
+        ${['🤖', '✍️', '👨‍💻', '🌐', '💼', '📊', '📈', '📚', '🔤', '🔢', '🏥', '✈️', '🍳', '🧑', '😊', '😎', '🤓', '🦸', '🧙', '🥷'].map(a => 
+          `<option value="${a}" ${a === agent.avatar ? 'selected' : ''}>${a}</option>`
+        ).join('')}
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">类别</label>
+      <select class="form-select" id="agentCategory">
+        <option value="hot" ${agent.category === 'hot' ? 'selected' : ''}>热门</option>
+        <option value="work" ${agent.category === 'work' ? 'selected' : ''}>工作</option>
+        <option value="study" ${agent.category === 'study' ? 'selected' : ''}>学习</option>
+        <option value="life" ${agent.category === 'life' ? 'selected' : ''}>生活</option>
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">描述</label>
+      <input type="text" class="form-input" id="agentDescription" value="${agent.description || ''}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">System Prompt</label>
+      <textarea class="form-textarea" id="agentPrompt">${agent.system_prompt || ''}</textarea>
+    </div>
+    <div class="form-group">
+      <label class="form-label">LLM配置</label>
+      <select class="form-select" id="agentLLM">
+        <option value="">使用默认</option>
+        ${llmConfigs.map(c => `<option value="${c.id}" ${c.id === agent.llm_config_id ? 'selected' : ''}>${c.name}</option>`).join('')}
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">热度</label>
+      <input type="number" class="form-input" id="agentHeat" value="${agent.heat || 0}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">标签</label>
+      <input type="text" class="form-input" id="agentTags" value="${agent.tags || ''}">
+    </div>
+    <div class="form-group">
+      <label style="display: flex; align-items: center; gap: 8px;">
+        <input type="checkbox" id="agentEnableSearch" ${agent.enable_search ? 'checked' : ''}> 启用联网搜索
+      </label>
+    </div>
+    <button class="form-submit" onclick="updateAgent('${agentId}')">保存</button>
+  `);
+}
+
+async function saveAgent() {
+  const data = {
+    agent_id: document.getElementById('agentId').value,
+    name: document.getElementById('agentName').value,
+    avatar: document.getElementById('agentAvatar').value,
+    category: document.getElementById('agentCategory').value,
+    description: document.getElementById('agentDescription').value,
+    system_prompt: document.getElementById('agentPrompt').value,
+    llm_config_id: document.getElementById('agentLLM').value || null,
+    heat: parseInt(document.getElementById('agentHeat').value),
+    tags: document.getElementById('agentTags').value,
+    enable_search: document.getElementById('agentEnableSearch').checked ? 1 : 0
+  };
+  
+  if (!data.agent_id || !data.name || !data.system_prompt) {
+    showToast('请填写完整信息');
+    return;
+  }
+  
+  await fetchAPI('/api/admin/agents', 'POST', data);
+  closeModal();
+  showToast('添加成功');
+  loadPage('agents');
+}
+
+async function updateAgent(agentId) {
+  const data = {
+    name: document.getElementById('agentName').value,
+    avatar: document.getElementById('agentAvatar').value,
+    category: document.getElementById('agentCategory').value,
+    description: document.getElementById('agentDescription').value,
+    system_prompt: document.getElementById('agentPrompt').value,
+    llm_config_id: document.getElementById('agentLLM').value || null,
+    heat: parseInt(document.getElementById('agentHeat').value),
+    tags: document.getElementById('agentTags').value,
+    enable_search: document.getElementById('agentEnableSearch').checked ? 1 : 0
+  };
+  
+  await fetchAPI(`/api/admin/agents/${agentId}`, 'PUT', data);
+  closeModal();
+  showToast('更新成功');
+  loadPage('agents');
+}
+
+async function deleteAgent(agentId) {
+  if (!confirm('确定删除此智能体？')) return;
+  await fetchAPI(`/api/admin/agents/${agentId}`, 'DELETE');
+  showToast('删除成功');
+  loadPage('agents');
+}
+
+// ==================== 搜索配置页面 ====================
+
+async function loadSearchPage(content) {
+  searchConfigs = await fetchAPI('/api/admin/search');
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">搜索配置</h1>
+      <button class="add-btn" onclick="showAddSearchModal()">+ 添加配置</button>
+    </div>
+    
+    <div class="data-table">
+      <table>
+        <thead>
+          <tr>
+            <th>名称</th>
+            <th>提供商</th>
+            <th>API URL</th>
+            <th>最大结果数</th>
+            <th>状态</th>
+            <th>操作</th>
+          </tr>
+        </thead>
+        <tbody>
+          ${searchConfigs.map(c => `
+            <tr>
+              <td>${c.name} ${c.is_default ? '<span class="default-badge">默认</span>' : ''}</td>
+              <td>${c.provider}</td>
+              <td style="max-width: 200px; overflow: hidden; text-overflow: ellipsis;">${c.api_url}</td>
+              <td>${c.max_results}</td>
+              <td>${c.is_active ? '✅ 启用' : '❌ 禁用'}</td>
+              <td>
+                <div class="action-btns">
+                  <button class="action-btn edit" onclick="showEditSearchModal(${c.id})">编辑</button>
+                  ${!c.is_default ? `<button class="action-btn default" onclick="setDefaultSearch(${c.id})">设为默认</button>` : ''}
+                  <button class="action-btn delete" onclick="deleteSearch(${c.id})">删除</button>
+                </div>
+              </td>
+            </tr>
+          `).join('')}
+        </tbody>
+      </table>
+    </div>
+  `;
+}
+
+function showAddSearchModal() {
+  showModal('添加搜索配置', `
+    <div class="form-group">
+      <label class="form-label">名称</label>
+      <input type="text" class="form-input" id="searchName" placeholder="如：Tavily">
+    </div>
+    <div class="form-group">
+      <label class="form-label">提供商</label>
+      <select class="form-select" id="searchProvider">
+        <option value="tavily">Tavily</option>
+        <option value="google">Google</option>
+        <option value="bing">Bing</option>
+        <option value="custom">自定义</option>
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">API URL</label>
+      <input type="text" class="form-input" id="searchApiUrl" placeholder="API endpoint URL">
+    </div>
+    <div class="form-group">
+      <label class="form-label">API Key</label>
+      <input type="text" class="form-input" id="searchApiKey" placeholder="API Key">
+    </div>
+    <div class="form-group">
+      <label class="form-label">最大结果数</label>
+      <input type="number" class="form-input" id="searchMaxResults" value="10">
+    </div>
+    <button class="form-submit" onclick="saveSearch()">保存</button>
+  `);
+}
+
+function showEditSearchModal(id) {
+  const config = searchConfigs.find(c => c.id === id);
+  if (!config) return;
+  
+  showModal('编辑搜索配置', `
+    <div class="form-group">
+      <label class="form-label">名称</label>
+      <input type="text" class="form-input" id="searchName" value="${config.name}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">提供商</label>
+      <select class="form-select" id="searchProvider">
+        <option value="tavily" ${config.provider === 'tavily' ? 'selected' : ''}>Tavily</option>
+        <option value="google" ${config.provider === 'google' ? 'selected' : ''}>Google</option>
+        <option value="bing" ${config.provider === 'bing' ? 'selected' : ''}>Bing</option>
+        <option value="custom" ${config.provider === 'custom' ? 'selected' : ''}>自定义</option>
+      </select>
+    </div>
+    <div class="form-group">
+      <label class="form-label">API URL</label>
+      <input type="text" class="form-input" id="searchApiUrl" value="${config.api_url}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">API Key</label>
+      <input type="text" class="form-input" id="searchApiKey" value="${config.api_key}">
+    </div>
+    <div class="form-group">
+      <label class="form-label">最大结果数</label>
+      <input type="number" class="form-input" id="searchMaxResults" value="${config.max_results}">
+    </div>
+    <button class="form-submit" onclick="updateSearch(${id})">保存</button>
+  `);
+}
+
+async function saveSearch() {
+  const data = {
+    name: document.getElementById('searchName').value,
+    provider: document.getElementById('searchProvider').value,
+    api_url: document.getElementById('searchApiUrl').value,
+    api_key: document.getElementById('searchApiKey').value,
+    max_results: parseInt(document.getElementById('searchMaxResults').value)
+  };
+  
+  if (!data.name || !data.api_url || !data.api_key) {
+    showToast('请填写完整信息');
+    return;
+  }
+  
+  await fetchAPI('/api/admin/search', 'POST', data);
+  closeModal();
+  showToast('添加成功');
+  loadPage('search');
+}
+
+async function updateSearch(id) {
+  const data = {
+    name: document.getElementById('searchName').value,
+    provider: document.getElementById('searchProvider').value,
+    api_url: document.getElementById('searchApiUrl').value,
+    api_key: document.getElementById('searchApiKey').value,
+    max_results: parseInt(document.getElementById('searchMaxResults').value)
+  };
+  
+  await fetchAPI(`/api/admin/search/${id}`, 'PUT', data);
+  closeModal();
+  showToast('更新成功');
+  loadPage('search');
+}
+
+async function setDefaultSearch(id) {
+  await fetchAPI(`/api/admin/search/${id}/default`, 'POST');
+  showToast('已设为默认');
+  loadPage('search');
+}
+
+async function deleteSearch(id) {
+  if (!confirm('确定删除此配置？')) return;
+  await fetchAPI(`/api/admin/search/${id}`, 'DELETE');
+  showToast('删除成功');
+  loadPage('search');
+}
+
+// ==================== 系统设置页面 ====================
+
+async function loadSystemPage(content) {
+  systemConfigs = await fetchAPI('/api/admin/system');
+  
+  content.innerHTML = `
+    <div class="content-header">
+      <h1 class="content-title">系统设置</h1>
+    </div>
+    
+    <div class="data-table" style="padding: 24px;">
+      <div class="form-group">
+        <label class="form-label">应用名称</label>
+        <input type="text" class="form-input" id="appName" value="${systemConfigs.app_name?.value || ''}">
+        <span style="color: #999; font-size: 12px;">${systemConfigs.app_name?.description || ''}</span>
+      </div>
+      
+      <div class="form-group">
+        <label class="form-label">应用版本</label>
+        <input type="text" class="form-input" id="appVersion" value="${systemConfigs.app_version?.value || ''}">
+      </div>
+      
+      <div class="form-group">
+        <label style="display: flex; align-items: center; gap: 8px;">
+          <input type="checkbox" id="enableSearch" ${systemConfigs.enable_search?.value === 'true' ? 'checked' : ''}>
+          启用联网搜索
+        </label>
+      </div>
+      
+      <h3 style="margin: 24px 0 16px; padding-top: 16px; border-top: 1px solid #e2e8f0;">游客使用限制</h3>
+      
+      <div class="form-group">
+        <label class="form-label">每日对话会话数</label>
+        <input type="number" class="form-input" id="guestChatSessions" value="${systemConfigs.guest_chat_sessions?.value || 1}">
+      </div>
+      
+      <div class="form-group">
+        <label class="form-label">每日对话消息数</label>
+        <input type="number" class="form-input" id="guestChatMessages" value="${systemConfigs.guest_chat_messages?.value || 20}">
+      </div>
+      
+      <div class="form-group">
+        <label class="form-label">每日智能体消息数</label>
+        <input type="number" class="form-input" id="guestAgentMessages" value="${systemConfigs.guest_agent_messages?.value || 20}">
+      </div>
+      
+      <h3 style="margin: 24px 0 16px; padding-top: 16px; border-top: 1px solid #e2e8f0;">管理员设置</h3>
+      
+      <div class="form-group">
+        <label class="form-label">管理员密码</label>
+        <input type="text" class="form-input" id="adminPassword" value="${systemConfigs.admin_password?.value || ''}" placeholder="修改管理员密码">
+      </div>
+      
+      <button class="form-submit" onclick="saveSystemConfig()">保存设置</button>
+    </div>
+  `;
+}
+
+async function saveSystemConfig() {
+  const data = {
+    app_name: document.getElementById('appName').value,
+    app_version: document.getElementById('appVersion').value,
+    enable_search: document.getElementById('enableSearch').checked ? 'true' : 'false',
+    guest_chat_sessions: document.getElementById('guestChatSessions').value,
+    guest_chat_messages: document.getElementById('guestChatMessages').value,
+    guest_agent_messages: document.getElementById('guestAgentMessages').value,
+    admin_password: document.getElementById('adminPassword').value
+  };
+  
+  await fetchAPI('/api/admin/system', 'POST', data);
+  showToast('保存成功');
+  loadPage('system');
+}
+
+// ==================== 工具函数 ====================
+
+async function fetchAPI(url, method = 'GET', data = null) {
+  const options = {
+    method,
+    headers: { 'Content-Type': 'application/json' }
+  };
+  
+  if (data) {
+    options.body = JSON.stringify(data);
+  }
+  
+  const res = await fetch(`${API_BASE}${url}`, options);
+  return res.json();
+}
+
+function showModal(title, content) {
+  const modal = document.getElementById('modal');
+  const modalContent = document.getElementById('modalContent');
+  
+  modalContent.innerHTML = `
+    <div class="modal-header">
+      <h2 class="modal-title">${title}</h2>
+      <span class="modal-close" onclick="closeModal()">×</span>
+    </div>
+    ${content}
+  `;
+  
+  modal.classList.add('show');
+}
+
+function closeModal() {
+  document.getElementById('modal').classList.remove('show');
+}
+
+function showToast(message) {
+  const toast = document.getElementById('toast');
+  toast.textContent = message;
+  toast.classList.add('show');
+  
+  setTimeout(() => {
+    toast.classList.remove('show');
+  }, 2000);
+}
+
+// 点击模态框背景关闭
+document.getElementById('modal').addEventListener('click', (e) => {
+  if (e.target.id === 'modal') {
+    closeModal();
+  }
+});

www/index.html

@@ -8,12 +8,12 @@
   <meta http-equiv="Pragma" content="no-cache">
   <meta http-equiv="Expires" content="0">
   <title>AI助手</title>
-  <link rel="stylesheet" href="style.css?v=3.0.2">
+  <link rel="stylesheet" href="style.css?v=3.5.1">
   <link rel="manifest" href="manifest.json">
 </head>
 <body>
   <div id="app"></div>
-  <script src="marked.min.js?v=3.0.2"></script>
-  <script src="app.js?v=3.0.2"></script>
+  <script src="marked.min.js?v=3.5.1"></script>
+  <script src="app.js?v=3.5.1"></script>
 </body>
 </html>