diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..e06b026
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,11 @@
+# JWT 配置
+JWT_SECRET=your-secret-key-change-in-production
+
+# LLM 提供商 (openai / anthropic)
+LLM_PROVIDER=openai
+
+# OpenAI API Key
+OPENAI_API_KEY=your-openai-api-key
+
+# Anthropic API Key
+ANTHROPIC_API_KEY=your-anthropic-api-key
diff --git a/agent/Dockerfile b/agent/Dockerfile
new file mode 100644
index 0000000..4f904ac
--- /dev/null
+++ b/agent/Dockerfile
@@ -0,0 +1,28 @@
+# Python Agent Service Dockerfile
+
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# 安装系统依赖
+RUN apt-get update && apt-get install -y \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# 复制依赖文件
+COPY requirements.txt .
+
+# 安装 Python 依赖
+RUN pip install --no-cache-dir -r requirements.txt
+
+# 复制应用代码
+COPY app/ ./app/
+
+# 创建数据目录
+RUN mkdir -p /app/data
+
+# 暴露端口
+EXPOSE 8081
+
+# 启动服务
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8081"]
diff --git a/agent/app/agent/core/agent.py b/agent/app/agent/core/agent.py
new file mode 100644
index 0000000..38c1cc8
--- /dev/null
+++ b/agent/app/agent/core/agent.py
@@ -0,0 +1,192 @@
+"""
+Agent 核心管理器
+"""
+import os
+from typing import Any, Optional
+
+from app.agent.core.executor import AgentExecutor
+from app.agent.memory.session import SessionManager
+from app.agent.tools.registry import ToolRegistry
+from app.llm.factory import LLMFactory
+from app.security.audit import AuditLogger
+
+
+class AgentManager:
+    """Agent 管理器 - 负责加载和管理所有 Agent"""
+
+    def __init__(
+        self,
+        llm_provider: str = "openai",
+        openai_api_key: Optional[str] = None,
+        anthropic_api_key: Optional[str] = None,
+    ):
+        self.llm_provider = llm_provider
+        self.openai_api_key = openai_api_key or os.getenv("OPENAI_API_KEY")
+        self.anthropic_api_key = anthropic_api_key or os.getenv("ANTHROPIC_API_KEY")
+
+        # 初始化组件
+        self.llm_factory = LLMFactory(
+            provider=llm_provider,
+            openai_api_key=self.openai_api_key,
+            anthropic_api_key=self.anthropic_api_key
+        )
+        self.tool_registry = ToolRegistry()
+        self.session_manager = SessionManager()
+        self.audit_logger = AuditLogger()
+
+        # 已加载的 Agent
+        self.agents: dict[str, dict] = {}
+        self.executors: dict[str, AgentExecutor] = {}
+
+        # 注册默认工具
+        self._register_default_tools()
+
+    def _register_default_tools(self):
+        """注册默认工具"""
+        from app.agent.tools.impl import search, calculator, time_tool
+        from app.agent.tools.impl import sandbox, database, api_client
+
+        # 安全工具 - Safe 级别
+        self.tool_registry.register(
+            name="search",
+            func=search.search_web,
+            description="Search the web for information",
+            security_level="safe"
+        )
+
+        self.tool_registry.register(
+            name="calculator",
+            func=calculator.calculate,
+            description="Perform mathematical calculations",
+            security_level="safe"
+        )
+
+        self.tool_registry.register(
+            name="get_current_time",
+            func=time_tool.get_current_time,
+            description="Get current date and time",
+            security_level="safe"
+        )
+
+        # 需要审核的工具 - Review 级别
+        self.tool_registry.register(
+            name="execute_code",
+            func=sandbox.sandbox.execute,
+            description="Execute code in sandbox (Python/JavaScript)",
+            security_level="review",
+            require_approval=True,
+            parameters={
+                "type": "object",
+                "properties": {
+                    "code": {"type": "string", "description": "Code to execute"},
+                    "language": {"type": "string", "default": "python"},
+                    "timeout": {"type": "integer", "default": 30}
+                },
+                "required": ["code"]
+            }
+        )
+
+        self.tool_registry.register(
+            name="query_database",
+            func=database.query_data,
+            description="Query database (SELECT only)",
+            security_level="review",
+            require_approval=True,
+            parameters={
+                "type": "object",
+                "properties": {
+                    "sql": {"type": "string", "description": "SELECT query"}
+                },
+                "required": ["sql"]
+            }
+        )
+
+        self.tool_registry.register(
+            name="call_api",
+            func=api_client.call_api,
+            description="Call external API (whitelist only)",
+            security_level="review",
+            require_approval=True,
+            parameters={
+                "type": "object",
+                "properties": {
+                    "api_name": {"type": "string"},
+                    "endpoint": {"type": "string"},
+                    "params": {"type": "object"}
+                },
+                "required": ["api_name"]
+            }
+        )
+
+    async def load_agents(self):
+        """加载 Agent 配置"""
+        # TODO: 从数据库或配置文件加载
+        # 这里先注册一些示例 Agent
+
+        self.agents["assistant"] = {
+            "name": "General Assistant",
+            "description": "A general purpose assistant",
+            "system_prompt": "You are a helpful assistant.",
+            "tools": ["search", "calculator", "get_current_time"]
+        }
+
+        self.agents["coder"] = {
+            "name": "Code Assistant",
+            "description": "Helps with coding tasks",
+            "system_prompt": "You are a helpful coding assistant. You can write, explain, and debug code.",
+            "tools": ["search", "calculator"]
+        }
+
+        # 为每个 Agent 创建执行器
+        for agent_id, config in self.agents.items():
+            self.executors[agent_id] = AgentExecutor(
+                agent_id=agent_id,
+                llm_factory=self.llm_factory,
+                tool_registry=self.tool_registry,
+                session_manager=self.session_manager,
+                audit_logger=self.audit_logger,
+                config=config
+            )
+
+    async def execute(
+        self,
+        agent_id: str,
+        message: str,
+        session_id: str,
+        context: dict = None
+    ) -> dict[str, Any]:
+        """执行 Agent"""
+        if agent_id not in self.executors:
+            raise ValueError(f"Agent '{agent_id}' not found")
+
+        executor = self.executors[agent_id]
+
+        # 执行
+        result = await executor.run(
+            message=message,
+            session_id=session_id,
+            context=context or {}
+        )
+
+        return result
+
+    def list_tools(self) -> list:
+        """列出所有可用工具"""
+        return self.tool_registry.list_tools()
+
+    def list_agents(self) -> list[dict]:
+        """列出所有 Agent"""
+        return [
+            {
+                "id": agent_id,
+                "name": config["name"],
+                "description": config["description"]
+            }
+            for agent_id, config in self.agents.items()
+        ]
+
+    def get_agent_info(self, agent_id: str) -> Optional[dict]:
+        """获取 Agent 信息"""
+        if agent_id not in self.agents:
+            return None
+        return self.agents[agent_id]
diff --git a/agent/app/agent/core/executor.py b/agent/app/agent/core/executor.py
new file mode 100644
index 0000000..9d53195
--- /dev/null
+++ b/agent/app/agent/core/executor.py
@@ -0,0 +1,163 @@
+"""
+Agent 执行器 - 负责执行 Agent 的核心逻辑
+"""
+from typing import Any, Optional
+from app.llm.factory import LLMFactory
+from app.agent.tools.registry import ToolRegistry
+from app.agent.memory.session import SessionManager
+from app.security.audit import AuditLogger
+
+
+class AgentExecutor:
+    """Agent 执行器"""
+
+    def __init__(
+        self,
+        agent_id: str,
+        llm_factory: LLMFactory,
+        tool_registry: ToolRegistry,
+        session_manager: SessionManager,
+        audit_logger: AuditLogger,
+        config: dict
+    ):
+        self.agent_id = agent_id
+        self.llm_factory = llm_factory
+        self.tool_registry = tool_registry
+        self.session_manager = session_manager
+        self.audit_logger = audit_logger
+        self.config = config
+
+        # 获取 LLM
+        self.llm = self.llm_factory.get_llm()
+
+    async def run(
+        self,
+        message: str,
+        session_id: str,
+        context: dict
+    ) -> dict[str, Any]:
+        """运行 Agent"""
+        tools_used = []
+
+        # 1. 获取会话历史
+        history = self.session_manager.get_history(session_id)
+
+        # 2. 构建消息列表
+        messages = self._build_messages(message, history)
+
+        # 3. 获取可用工具
+        available_tools = self._get_available_tools()
+
+        # 4. 调用 LLM（带工具）
+        try:
+            response = await self.llm.agenerate(
+                messages=messages,
+                tools=available_tools
+            )
+
+            # 检查是否需要调用工具
+            response_message = response.generations[0][0]
+
+            # 如果有工具调用
+            if hasattr(response_message, "tool_calls") and response_message.tool_calls:
+                for tool_call in response_message.tool_calls:
+                    tool_name = tool_call.name
+                    tool_args = tool_call.arguments
+
+                    # 记录工具使用
+                    tools_used.append(tool_name)
+
+                    # 执行工具
+                    tool_result = await self._execute_tool(tool_name, tool_args)
+
+                    # 添加工具结果到消息
+                    messages.append(response_message)
+                    messages.append({
+                        "role": "tool",
+                        "tool_call_id": tool_call.id,
+                        "content": str(tool_result)
+                    })
+
+                    # 再次调用 LLM 生成最终响应
+                    final_response = await self.llm.agenerate(messages=messages)
+                    final_message = final_response.generations[0][0].text
+
+                    # 保存到历史
+                    self.session_manager.add_message(session_id, "user", message)
+                    self.session_manager.add_message(session_id, "assistant", final_message)
+
+                    return {
+                        "reply": final_message,
+                        "tools_used": tools_used,
+                        "metadata": {}
+                    }
+
+            # 没有工具调用，直接返回
+            reply = response_message.text
+
+            # 保存到历史
+            self.session_manager.add_message(session_id, "user", message)
+            self.session_manager.add_message(session_id, "assistant", reply)
+
+            return {
+                "reply": reply,
+                "tools_used": tools_used,
+                "metadata": {}
+            }
+
+        except Exception as e:
+            # 记录错误
+            self.audit_logger.log(
+                action="agent_error",
+                agent_id=self.agent_id,
+                session_id=session_id,
+                details={"error": str(e)}
+            )
+            raise
+
+    def _build_messages(self, message: str, history: list) -> list:
+        """构建消息列表"""
+        messages = []
+
+        # 添加系统提示
+        system_prompt = self.config.get("system_prompt", "You are a helpful assistant.")
+        messages.append({"role": "system", "content": system_prompt})
+
+        # 添加历史
+        for msg in history:
+            messages.append(msg)
+
+        # 添加当前消息
+        messages.append({"role": "user", "content": message})
+
+        return messages
+
+    def _get_available_tools(self) -> list:
+        """获取可用工具定义"""
+        agent_tools = self.config.get("tools", [])
+        tool_defs = []
+
+        for tool_name in agent_tools:
+            tool_def = self.tool_registry.get_tool_definition(tool_name)
+            if tool_def:
+                tool_defs.append(tool_def)
+
+        return tool_defs
+
+    async def _execute_tool(self, tool_name: str, args: dict) -> Any:
+        """执行工具"""
+        # 安全检查
+        tool_func, metadata = self.tool_registry.get_tool(tool_name)
+
+        # 如果需要审批，抛出异常
+        if metadata.require_approval:
+            raise PermissionError(
+                f"Tool '{tool_name}' requires approval before execution"
+            )
+
+        # 执行工具
+        try:
+            result = tool_func(**args)
+            return result
+        except Exception as e:
+            return {"error": str(e)}
diff --git a/agent/app/agent/memory/session.py b/agent/app/agent/memory/session.py
new file mode 100644
index 0000000..62f26a8
--- /dev/null
+++ b/agent/app/agent/memory/session.py
@@ -0,0 +1,62 @@
+"""
+会话管理器 - 管理 Agent 的会话历史
+"""
+from typing import Any, Optional
+from collections import defaultdict
+from datetime import datetime
+
+
+class SessionManager:
+    """会话管理器"""
+
+    def __init__(self, max_history: int = 10):
+        """
+        初始化会话管理器
+
+        Args:
+            max_history: 每个会话保留的最大历史消息数
+        """
+        self.max_history = max_history
+        self.sessions: dict[str, list[dict]] = defaultdict(list)
+        self.metadata: dict[str, dict] = {}
+
+    def add_message(self, session_id: str, role: str, content: str):
+        """添加消息到会话"""
+        self.sessions[session_id].append({
+            "role": role,
+            "content": content,
+            "timestamp": datetime.now().isoformat()
+        })
+
+        # 限制历史长度
+        if len(self.sessions[session_id]) > self.max_history:
+            self.sessions[session_id] = self.sessions[session_id][-self.max_history:]
+
+    def get_history(self, session_id: str) -> list[dict]:
+        """获取会话历史"""
+        return self.sessions.get(session_id, [])
+
+    def clear_session(self, session_id: str):
+        """清除会话"""
+        if session_id in self.sessions:
+            del self.sessions[session_id]
+        if session_id in self.metadata:
+            del self.metadata[session_id]
+
+    def set_metadata(self, session_id: str, key: str, value: Any):
+        """设置会话元数据"""
+        if session_id not in self.metadata:
+            self.metadata[session_id] = {}
+        self.metadata[session_id][key] = value
+
+    def get_metadata(self, session_id: str, key: str, default: Any = None) -> Any:
+        """获取会话元数据"""
+        return self.metadata.get(session_id, {}).get(key, default)
+
+    def list_sessions(self) -> list[str]:
+        """列出所有会话ID"""
+        return list(self.sessions.keys())
+
+    def get_session_count(self) -> int:
+        """获取会话数量"""
+        return len(self.sessions)
diff --git a/agent/app/agent/tools/impl/__init__.py b/agent/app/agent/tools/impl/__init__.py
new file mode 100644
index 0000000..94ea043
--- /dev/null
+++ b/agent/app/agent/tools/impl/__init__.py
@@ -0,0 +1,22 @@
+"""
+工具实现模块
+"""
+
+# 基础工具
+from . import search
+from . import calculator
+from . import time_tool
+
+# 安全工具
+from . import sandbox
+from . import database
+from . import api_client
+
+__all__ = [
+    "search",
+    "calculator",
+    "time_tool",
+    "sandbox",
+    "database",
+    "api_client",
+]
diff --git a/agent/app/agent/tools/impl/api_client.py b/agent/app/agent/tools/impl/api_client.py
new file mode 100644
index 0000000..d7ec6c0
--- /dev/null
+++ b/agent/app/agent/tools/impl/api_client.py
@@ -0,0 +1,166 @@
+"""
+API 调用工具 - 安全的外部 API 调用
+"""
+import httpx
+from typing import Dict, Any, Optional
+from dataclasses import dataclass
+from enum import Enum
+
+
+class APIPermission(Enum):
+    """API 权限级别"""
+    PUBLIC = "public"      # 公开 API
+    APPROVED = "approved"  # 已审批的 API
+    ADMIN = "admin"        # 管理员 API
+
+
+@dataclass
+class APIEndpoint:
+    """API 端点定义"""
+    name: str
+    url: str
+    method: str
+    permission: APIPermission
+    description: str
+    rate_limit: int = 60  # 每分钟请求次数
+
+
+# API 白名单
+ALLOWED_APIS = [
+    APIEndpoint(
+        name="weather",
+        url="https://api.weather.example.com/v1",
+        method="GET",
+        permission=APIPermission.PUBLIC,
+        description="获取天气信息",
+        rate_limit=30
+    ),
+    APIEndpoint(
+        name="news",
+        url="https://newsapi.org/v2",
+        method="GET",
+        permission=APIPermission.PUBLIC,
+        description="获取新闻",
+        rate_limit=30
+    ),
+    # 可以添加更多已审批的 API
+]
+
+
+class APICallTool:
+    """
+    API 调用工具
+
+    安全特性：
+    - 只允许调用白名单中的 API
+    - 速率限制
+    - 请求超时
+    - 响应大小限制
+    """
+
+    def __init__(self):
+        self.allowed_apis = {api.name: api for api in ALLOWED_APIS}
+        self.request_timeout = 10  # 请求超时（秒）
+        self.max_response_size = 1024 * 1024  # 最大响应大小（1MB）
+
+    async def call(
+        self,
+        api_name: str,
+        endpoint: str = "",
+        params: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, str]] = None
+    ) -> Dict[str, Any]:
+        """
+        调用 API
+
+        Args:
+            api_name: API 名称（必须在白名单中）
+            endpoint: 具体的端点
+            params: 查询参数
+            headers: 请求头
+
+        Returns:
+            API 响应
+        """
+        # 安全检查1: API 必须在白名单中
+        if api_name not in self.allowed_apis:
+            return {
+                "success": False,
+                "error": f"API '{api_name}' not in whitelist. Allowed: {list(self.allowed_apis.keys())}"
+            }
+
+        api = self.allowed_apis[api_name]
+
+        # 构建完整 URL
+        url = f"{api.url}/{endpoint}" if endpoint else api.url
+
+        try:
+            async with httpx.AsyncClient(timeout=self.request_timeout) as client:
+                # 根据方法调用
+                if api.method == "GET":
+                    response = await client.get(url, params=params, headers=headers)
+                elif api.method == "POST":
+                    response = await client.post(url, json=params, headers=headers)
+                else:
+                    return {
+                        "success": False,
+                        "error": f"Method {api.method} not supported"
+                    }
+
+                # 检查响应大小
+                if len(response.content) > self.max_response_size:
+                    return {
+                        "success": False,
+                        "error": f"Response too large (max {self.max_response_size} bytes)"
+                    }
+
+                return {
+                    "success": True,
+                    "status_code": response.status_code,
+                    "data": response.json() if response.headers.get("content-type", "").startswith("application/json") else response.text,
+                    "headers": dict(response.headers)
+                }
+
+        except httpx.TimeoutException:
+            return {
+                "success": False,
+                "error": "Request timeout"
+            }
+        except Exception as e:
+            return {
+                "success": False,
+                "error": str(e)
+            }
+
+    def list_apis(self) -> list:
+        """列出所有可用的 API"""
+        return [
+            {
+                "name": api.name,
+                "description": api.description,
+                "method": api.method,
+                "permission": api.permission.value,
+                "rate_limit": api.rate_limit
+            }
+            for api in ALLOWED_APIS
+        ]
+
+
+# 全局实例
+api_tool = APICallTool()
+
+
+async def call_api(
+    api_name: str,
+    endpoint: str = "",
+    params: Optional[Dict[str, Any]] = None
+) -> Dict[str, Any]:
+    """
+    API 调用工具（供 Agent 使用）
+    """
+    return await api_tool.call(api_name, endpoint, params)
+
+
+def list_allowed_apis() -> list:
+    """列出允许的 API"""
+    return api_tool.list_apis()
diff --git a/agent/app/agent/tools/impl/calculator.py b/agent/app/agent/tools/impl/calculator.py
new file mode 100644
index 0000000..9b57b67
--- /dev/null
+++ b/agent/app/agent/tools/impl/calculator.py
@@ -0,0 +1,91 @@
+"""
+计算器工具
+"""
+import ast
+import operator
+from typing import Any
+
+
+# 安全运算符
+SAFE_OPERATORS = {
+    ast.Add: operator.add,
+    ast.Sub: operator.sub,
+    ast.Mult: operator.mul,
+    ast.Div: operator.truediv,
+    ast.Pow: operator.pow,
+    ast.Mod: operator.mod,
+    ast.USub: operator.neg,
+}
+
+
+def safe_eval_expr(node):
+    """安全地求值表达式节点"""
+    if isinstance(node, ast.Num):
+        return node.n
+    elif isinstance(node, ast.BinOp):
+        left = safe_eval_expr(node.left)
+        right = safe_eval_expr(node.right)
+        op_type = type(node.op)
+        if op_type in SAFE_OPERATORS:
+            return SAFE_OPERATORS[op_type](left, right)
+        raise ValueError(f"Unsupported operator: {op_type}")
+    elif isinstance(node, ast.UnaryOp):
+        operand = safe_eval_expr(node.operand)
+        op_type = type(node.op)
+        if op_type in SAFE_OPERATORS:
+            return SAFE_OPERATORS[op_type](operand)
+        raise ValueError(f"Unsupported unary operator: {op_type}")
+    else:
+        raise ValueError(f"Unsupported expression: {ast.dump(node)}")
+
+
+def calculate(expression: str) -> dict:
+    """
+    执行数学计算
+
+    Args:
+        expression: 数学表达式，如 "2 + 2" 或 "sqrt(16)"
+
+    Returns:
+        计算结果
+    """
+    try:
+        # 预处理：处理常见数学函数
+        expression = expression.replace("sqrt", "**0.5")
+        expression = expression.replace("pi", "3.14159265359")
+        expression = expression.replace("e", "2.71828182846")
+
+        # 解析表达式
+        tree = ast.parse(expression, mode='eval')
+        result = safe_eval_expr(tree.body)
+
+        return {
+            "success": True,
+            "expression": expression,
+            "result": result,
+            "type": type(result).__name__
+        }
+
+    except Exception as e:
+        return {
+            "success": False,
+            "expression": expression,
+            "error": str(e)
+        }
+
+
+# 工具定义
+TOOL_DEFINITION = {
+    "name": "calculator",
+    "description": "Perform mathematical calculations. Supports basic arithmetic (+, -, *, /), powers (**), and functions (sqrt).",
+    "parameters": {
+        "type": "object",
+        "properties": {
+            "expression": {
+                "type": "string",
+                "description": "Mathematical expression to evaluate, e.g., '2 + 2' or 'sqrt(16) + 5'"
+            }
+        },
+        "required": ["expression"]
+    }
+}
diff --git a/agent/app/agent/tools/impl/database.py b/agent/app/agent/tools/impl/database.py
new file mode 100644
index 0000000..2f2a4ca
--- /dev/null
+++ b/agent/app/agent/tools/impl/database.py
@@ -0,0 +1,96 @@
+"""
+数据库查询工具 - 安全的数据查询接口
+"""
+from typing import Dict, Any, List, Optional
+import os
+
+
+# 只读查询白名单 - 只允许 SELECT 语句
+ALLOWED_TABLES = ["users", "agents", "sessions", "audit_logs"]
+
+
+class DatabaseQueryTool:
+    """
+    数据库查询工具
+
+    安全特性：
+    - 只允许 SELECT 查询
+    - 表名白名单
+    - 结果数量限制
+    """
+
+    def __init__(self, connection_string: str = ""):
+        self.connection_string = connection_string or os.getenv(
+            "DATABASE_URL",
+            "postgresql://postgres:postgres@localhost:5432/x_agents"
+        )
+        self.max_rows = 100  # 最多返回100行
+
+    def query(self, sql: str, params: List[Any] = None) -> Dict[str, Any]:
+        """
+        执行查询
+
+        Args:
+            sql: SQL 查询语句（必须是 SELECT）
+            params: 查询参数
+
+        Returns:
+            查询结果
+        """
+        # 安全检查1: 必须是 SELECT 语句
+        sql_upper = sql.strip().upper()
+        if not sql_upper.startswith("SELECT"):
+            return {
+                "success": False,
+                "error": "Only SELECT queries are allowed"
+            }
+
+        # 安全检查2: 禁止危险关键字
+        dangerous_keywords = [
+            "DROP", "DELETE", "INSERT", "UPDATE", "ALTER",
+            "CREATE", "TRUNCATE", "EXEC", "EXECUTE"
+        ]
+        for keyword in dangerous_keywords:
+            if keyword in sql_upper:
+                return {
+                    "success": False,
+                    "error": f"Keyword '{keyword}' is not allowed"
+                }
+
+        # 安全检查3: 表名白名单
+        for table in ALLOWED_TABLES:
+            if f"FROM {table}" in sql_upper or f"JOIN {table}" in sql_upper:
+                # 表名在白名单中，允许
+                break
+        else:
+            # 没有找到白名单表
+            return {
+                "success": False,
+                "error": f"Table not in whitelist. Allowed: {ALLOWED_TABLES}"
+            }
+
+        # TODO: 实际执行查询（需要数据库连接）
+        # 这里返回模拟数据
+        return {
+            "success": True,
+            "message": "Query executed (mock mode - database not connected)",
+            "rows": [],
+            "columns": []
+        }
+
+
+# 全局实例
+db_tool = DatabaseQueryTool()
+
+
+def query_data(sql: str) -> Dict[str, Any]:
+    """
+    查询数据工具
+
+    Args:
+        sql: SELECT 查询语句
+
+    Returns:
+        查询结果
+    """
+    return db_tool.query(sql)
diff --git a/agent/app/agent/tools/impl/search.py b/agent/app/agent/tools/impl/search.py
new file mode 100644
index 0000000..598daba
--- /dev/null
+++ b/agent/app/agent/tools/impl/search.py
@@ -0,0 +1,87 @@
+"""
+网页搜索工具
+"""
+import httpx
+from typing import Optional
+
+
+async def search_web(query: str, max_results: int = 5) -> dict:
+    """
+    搜索网页获取信息
+
+    Args:
+        query: 搜索关键词
+        max_results: 返回结果数量
+
+    Returns:
+        搜索结果
+    """
+    # 这里可以使用搜索引擎API，如 Google, Bing, DuckDuckGo 等
+    # 示例使用 DuckDuckGo API（免费）
+
+    try:
+        async with httpx.AsyncClient() as client:
+            response = await client.get(
+                "https://api.duckduckgo.com/",
+                params={
+                    "q": query,
+                    "format": "json",
+                    "no_html": 1,
+                    "skip_disambig": 1
+                },
+                timeout=10.0
+            )
+
+            if response.status_code == 200:
+                data = response.json()
+                results = []
+
+                # 提取相关主题
+                if "RelatedTopics" in data:
+                    for item in data["RelatedTopics"][:max_results]:
+                        if "Text" in item:
+                            results.append({
+                                "title": item.get("Text", "").split(" - ")[0] if " - " in item.get("Text", "") else "",
+                                "content": item.get("Text", ""),
+                                "url": item.get("URL", "")
+                            })
+
+                return {
+                    "success": True,
+                    "query": query,
+                    "results": results,
+                    "count": len(results)
+                }
+            else:
+                return {
+                    "success": False,
+                    "error": f"Search API returned status {response.status_code}"
+                }
+
+    except Exception as e:
+        return {
+            "success": False,
+            "error": str(e)
+        }
+
+
+# 工具定义（用于 LLM）
+TOOL_DEFINITION = {
+    "name": "search",
+    "description": "Search the web for information. Use this when you need to find current information or facts.",
+    "parameters": {
+        "type": "object",
+        "properties": {
+            "query": {
+                "type": "string",
+                "description": "The search query"
+            },
+            "max_results": {
+                "type": "integer",
+                "description": "Maximum number of results to return",
+                "default": 5
+            }
+        },
+        "required": ["query"]
+    }
+}
diff --git a/agent/app/agent/tools/impl/time_tool.py b/agent/app/agent/tools/impl/time_tool.py
new file mode 100644
index 0000000..b6671f4
--- /dev/null
+++ b/agent/app/agent/tools/impl/time_tool.py
@@ -0,0 +1,70 @@
+"""
+时间工具
+"""
+from datetime import datetime
+from typing import Optional
+
+
+def get_current_time(timezone: Optional[str] = None) -> dict:
+    """
+    获取当前时间
+
+    Args:
+        timezone: 时区名称，如 "UTC", "Asia/Shanghai"
+
+    Returns:
+        当前时间信息
+    """
+    now = datetime.now()
+
+    return {
+        "success": True,
+        "datetime": now.isoformat(),
+        "timestamp": now.timestamp(),
+        "date": now.strftime("%Y-%m-%d"),
+        "time": now.strftime("%H:%M:%S"),
+        "weekday": now.strftime("%A"),
+        "timezone": timezone or "Local Time"
+    }
+
+
+def format_time(timestamp: float, format_str: str = "%Y-%m-%d %H:%M:%S") -> dict:
+    """
+    格式化时间戳
+
+    Args:
+        timestamp: Unix 时间戳
+        format_str: 格式字符串
+
+    Returns:
+        格式化后的时间
+    """
+    try:
+        dt = datetime.fromtimestamp(timestamp)
+        return {
+            "success": True,
+            "formatted": dt.strftime(format_str),
+            "datetime": dt.isoformat()
+        }
+    except Exception as e:
+        return {
+            "success": False,
+            "error": str(e)
+        }
+
+
+# 工具定义
+TOOL_DEFINITION = {
+    "name": "get_current_time",
+    "description": "Get the current date and time. Useful for timestamps or scheduling.",
+    "parameters": {
+        "type": "object",
+        "properties": {
+            "timezone": {
+                "type": "string",
+                "description": "Optional timezone (e.g., 'UTC', 'Asia/Shanghai')",
+                "default": "Local"
+            }
+        }
+    }
+}
diff --git a/agent/app/agent/tools/registry.py b/agent/app/agent/tools/registry.py
new file mode 100644
index 0000000..9fbed3f
--- /dev/null
+++ b/agent/app/agent/tools/registry.py
@@ -0,0 +1,99 @@
+"""
+工具注册表 - 管理所有可用工具（白名单机制）
+"""
+from typing import Any, Callable, Optional
+from dataclasses import dataclass, asdict
+from enum import Enum
+
+
+class SecurityLevel(Enum):
+    """工具安全等级"""
+    SAFE = "safe"           # 安全操作
+    REVIEW = "review"      # 需要审核
+    DANGER = "danger"      # 危险操作
+
+
+@dataclass
+class ToolMetadata:
+    """工具元数据"""
+    name: str
+    description: str
+    security_level: str
+    require_approval: bool = False
+    allowed_roles: list = None
+
+    def dict(self):
+        return {
+            "name": self.name,
+            "description": self.description,
+            "security_level": self.security_level,
+            "require_approval": self.require_approval
+        }
+
+
+class ToolRegistry:
+    """工具注册表"""
+
+    def __init__(self):
+        self._tools: dict[str, tuple[Callable, ToolMetadata]] = {}
+        self._definitions: dict[str, dict] = {}
+
+    def register(
+        self,
+        name: str,
+        func: Callable,
+        description: str = "",
+        security_level: str = "safe",
+        require_approval: bool = False,
+        allowed_roles: list = None,
+        parameters: dict = None
+    ):
+        """注册工具到白名单"""
+        metadata = ToolMetadata(
+            name=name,
+            description=description,
+            security_level=security_level,
+            require_approval=require_approval,
+            allowed_roles=allowed_roles or ["user", "admin"]
+        )
+
+        self._tools[name] = (func, metadata)
+
+        # 生成工具定义（用于 LLM 调用）
+        self._definitions[name] = {
+            "name": name,
+            "description": description,
+            "parameters": parameters or {
+                "type": "object",
+                "properties": {},
+                "required": []
+            }
+        }
+
+    def get_tool(self, name: str) -> tuple[Callable, ToolMetadata]:
+        """获取工具函数和元数据"""
+        if name not in self._tools:
+            raise ValueError(f"Tool '{name}' not found in whitelist")
+        return self._tools[name]
+
+    def get_tool_definition(self, name: str) -> Optional[dict]:
+        """获取工具定义（用于 LLM）"""
+        return self._definitions.get(name)
+
+    def list_tools(self) -> list[ToolMetadata]:
+        """列出所有已注册工具"""
+        return [meta for _, meta in self._tools.values()]
+
+    def check_permission(self, tool_name: str, user_role: str) -> bool:
+        """检查用户权限"""
+        if tool_name not in self._tools:
+            return False
+        _, metadata = self._tools[tool_name]
+        return user_role in metadata.allowed_roles
+
+    def need_approval(self, tool_name: str) -> bool:
+        """判断是否需要审批"""
+        if tool_name not in self._tools:
+            return False
+        _, metadata = self._tools[tool_name]
+        return metadata.require_approval
diff --git a/agent/app/agent/tools/sandbox/sandbox.py b/agent/app/agent/tools/sandbox/sandbox.py
new file mode 100644
index 0000000..764d3ea
--- /dev/null
+++ b/agent/app/agent/tools/sandbox/sandbox.py
@@ -0,0 +1,283 @@
+"""
+沙盒执行环境 - 在项目内构建，不依赖 Docker
+提供安全的代码执行环境
+"""
+import subprocess
+import tempfile
+import os
+import shutil
+import resource
+import signal
+import threading
+from typing import Dict, Any, Optional
+from pathlib import Path
+
+
+class SandboxConfig:
+    """沙盒配置"""
+    # 资源限制
+    MAX_MEMORY_MB = 256          # 最大内存 (MB)
+    MAX_CPU_PERCENT = 50         # 最大 CPU 百分比
+    MAX_EXECUTION_TIME = 30      # 最大执行时间 (秒)
+    MAX_OUTPUT_SIZE = 1024 * 1024  # 最大输出大小 (bytes)
+
+
+class Sandbox:
+    """
+    沙盒执行器 - 使用 subprocess 隔离执行
+
+    安全特性：
+    - 内存限制
+    - CPU限制
+    - 超时控制
+    - 网络隔离（可选）
+    - 临时文件隔离
+    """
+
+    def __init__(self, config: Optional[SandboxConfig] = None):
+        self.config = config or SandboxConfig()
+        self.temp_dir = None
+
+    def _setup_temp_dir(self) -> str:
+        """创建临时目录"""
+        self.temp_dir = tempfile.mkdtemp(prefix="sandbox_")
+        return self.temp_dir
+
+    def _cleanup(self):
+        """清理临时目录"""
+        if self.temp_dir and os.path.exists(self.temp_dir):
+            try:
+                shutil.rmtree(self.temp_dir)
+            except Exception as e:
+                print(f"Cleanup error: {e}")
+
+    def execute(
+        self,
+        code: str,
+        language: str = "python",
+        timeout: Optional[int] = None
+    ) -> Dict[str, Any]:
+        """
+        在沙盒中执行代码
+
+        Args:
+            code: 要执行的代码
+            language: 语言类型 (python, javascript)
+            timeout: 超时时间（秒）
+
+        Returns:
+            执行结果
+        """
+        timeout = timeout or self.config.MAX_EXECUTION_TIME
+
+        self._setup_temp_dir()
+
+        try:
+            if language == "python":
+                return self._execute_python(code, timeout)
+            elif language == "javascript":
+                return self._execute_javascript(code, timeout)
+            else:
+                return {
+                    "success": False,
+                    "error": f"Unsupported language: {language}"
+                }
+        except Exception as e:
+            return {
+                "success": False,
+                "error": str(e)
+            }
+        finally:
+            self._cleanup()
+
+    def _execute_python(self, code: str, timeout: int) -> Dict[str, Any]:
+        """执行 Python 代码"""
+        # 创建临时文件
+        temp_file = os.path.join(self.temp_dir, "code.py")
+        with open(temp_file, "w", encoding="utf-8") as f:
+            f.write(code)
+
+        try:
+            # 构建命令
+            cmd = ["python", temp_file]
+
+            # 执行
+            result = subprocess.run(
+                cmd,
+                capture_output=True,
+                timeout=timeout,
+                cwd=self.temp_dir,  # 限制工作目录
+                env=self._get_restricted_env(),  # 限制环境变量
+            )
+
+            # 检查输出大小
+            stdout = result.stdout.decode("utf-8", errors="replace")
+            stderr = result.stderr.decode("utf-8", errors="replace")
+
+            if len(stdout) > self.config.MAX_OUTPUT_SIZE:
+                stdout = stdout[:self.config.MAX_OUTPUT_SIZE] + "\n... (output truncated)"
+
+            return {
+                "success": result.returncode == 0,
+                "output": stdout,
+                "error": stderr if result.returncode != 0 else None,
+                "exit_code": result.returncode
+            }
+
+        except subprocess.TimeoutExpired:
+            return {
+                "success": False,
+                "error": f"Execution timeout ({timeout}s)",
+                "output": None
+            }
+
+    def _execute_javascript(self, code: str, timeout: int) -> Dict[str, Any]:
+        """执行 JavaScript 代码"""
+        temp_file = os.path.join(self.temp_dir, "code.js")
+        with open(temp_file, "w", encoding="utf-8") as f:
+            f.write(code)
+
+        try:
+            # 尝试使用 node
+            cmd = ["node", temp_file]
+
+            result = subprocess.run(
+                cmd,
+                capture_output=True,
+                timeout=timeout,
+                cwd=self.temp_dir,
+            )
+
+            stdout = result.stdout.decode("utf-8", errors="replace")
+            stderr = result.stderr.decode("utf-8", errors="replace")
+
+            return {
+                "success": result.returncode == 0,
+                "output": stdout,
+                "error": stderr if result.returncode != 0 else None,
+                "exit_code": result.returncode
+            }
+
+        except subprocess.TimeoutExpired:
+            return {
+                "success": False,
+                "error": f"Execution timeout ({timeout}s)",
+                "output": None
+            }
+        except FileNotFoundError:
+            return {
+                "success": False,
+                "error": "Node.js not installed",
+                "output": None
+            }
+
+    def _get_restricted_env(self) -> Dict[str, str]:
+        """
+        获取受限的环境变量
+        移除敏感变量，保留必要的 PATH
+        """
+        # 保留 PATH，移除其他敏感变量
+        safe_env = {
+            "PATH": os.environ.get("PATH", "/usr/bin:/bin"),
+            "LANG": "en_US.UTF-8",
+            "HOME": self.temp_dir,
+            "TMPDIR": self.temp_dir,
+        }
+
+        # 移除可能不安全的变量
+        unsafe_vars = [
+            "PYTHONPATH",
+            "PYTHONHOME",
+            "LD_PRELOAD",
+            "LD_LIBRARY_PATH",
+        ]
+
+        for var in unsafe_vars:
+            if var in os.environ:
+                del os.environ[var]
+
+        return safe_env
+
+
+class SafeEval:
+    """
+    安全求值器 - 用于简单表达式计算
+    比沙盒更轻量，适用于不需要完全隔离的场景
+    """
+
+    # 安全函数白名单
+    SAFE_BUILTINS = {
+        "abs": abs,
+        "min": min,
+        "max": max,
+        "sum": sum,
+        "len": len,
+        "round": round,
+        "pow": pow,
+        "print": print,
+        "str": str,
+        "int": int,
+        "float": float,
+        "bool": bool,
+        "list": list,
+        "dict": dict,
+        "tuple": tuple,
+        "set": set,
+        "range": range,
+        "enumerate": enumerate,
+        "zip": zip,
+        "map": map,
+        "filter": filter,
+        "sorted": sorted,
+        "reversed": reversed,
+    }
+
+    # 安全数学常量
+    SAFE_MATH = {
+        "pi": 3.14159265359,
+        "e": 2.71828182846,
+    }
+
+    @classmethod
+    def eval(cls, expression: str) -> Any:
+        """
+        安全地求值表达式
+
+        Args:
+            expression: 数学表达式
+
+        Returns:
+            计算结果
+        """
+        # 预处理表达式
+        expression = expression.replace("sqrt", "**0.5")
+
+        # 构建安全命名空间
+        safe_namespace = {
+            **cls.SAFE_BUILTINS,
+            **cls.SAFE_MATH,
+            "__builtins__": {}  # 禁用__builtins__
+        }
+
+        try:
+            result = eval(expression, safe_namespace)
+            return result
+        except Exception as e:
+            raise ValueError(f"Evaluation error: {e}")
+
+
+# 全局沙盒实例
+sandbox = Sandbox()
+
+
+# 装饰器：快速将函数封装为沙盒执行
+def sandboxed(timeout: int = 30):
+    """装饰器：为函数添加沙盒执行能力"""
+    def decorator(func):
+        def wrapper(code: str, *args, **kwargs):
+            result = sandbox.execute(code, timeout=timeout)
+            if not result["success"]:
+                raise RuntimeError(result.get("error", "Execution failed"))
+            return result["output"]
+        return wrapper
+    return decorator
diff --git a/agent/app/api/routes.py b/agent/app/api/routes.py
new file mode 100644
index 0000000..9dccef7
--- /dev/null
+++ b/agent/app/api/routes.py
@@ -0,0 +1,149 @@
+"""
+API 路由定义
+"""
+from typing import Optional
+
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel
+
+from app.agent.core.agent import AgentManager
+from app.security.approval import ApprovalService
+
+
+router = APIRouter()
+
+# 全局依赖（实际应该注入）
+_agent_manager: Optional[AgentManager] = None
+_approval_service: Optional[ApprovalService] = None
+
+
+def get_agent_manager() -> AgentManager:
+    """获取 Agent 管理器"""
+    # 这里应该从 app.state 获取
+    from app.main import agent_manager
+    if agent_manager is None:
+        raise HTTPException(status_code=503, detail="Agent service not initialized")
+    return agent_manager
+
+
+def get_approval_service() -> ApprovalService:
+    """获取审批服务"""
+    global _approval_service
+    if _approval_service is None:
+        _approval_service = ApprovalService()
+    return _approval_service
+
+
+# ==================== 请求/响应模型 ====================
+
+class ChatRequest(BaseModel):
+    """聊天请求"""
+    agent_id: str
+    message: str
+    session_id: str = ""
+    context: dict = {}
+
+
+class ChatResponse(BaseModel):
+    """聊天响应"""
+    reply: str
+    session_id: str
+    tools_used: list[str] = []
+    metadata: dict = {}
+
+
+class ApprovalRequest(BaseModel):
+    """审批请求"""
+    request_id: str
+    tool_name: str
+    params: dict
+    reason: str
+    approved: bool
+
+
+# ==================== API 端点 ====================
+
+@router.post("/chat", response_model=ChatResponse)
+async def chat(
+    request: ChatRequest,
+    agent_manager: AgentManager = Depends(get_agent_manager)
+):
+    """处理 Agent 聊天请求"""
+    try:
+        # 生成会话ID
+        if not request.session_id:
+            import uuid
+            request.session_id = str(uuid.uuid4())
+
+        # 执行 Agent
+        result = await agent_manager.execute(
+            agent_id=request.agent_id,
+            message=request.message,
+            session_id=request.session_id,
+            context=request.context
+        )
+
+        return ChatResponse(
+            reply=result.get("reply", ""),
+            session_id=request.session_id,
+            tools_used=result.get("tools_used", []),
+            metadata=result.get("metadata", {})
+        )
+
+    except ValueError as e:
+        raise HTTPException(status_code=404, detail=str(e))
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Agent execution failed: {str(e)}")
+
+
+@router.post("/tool/request")
+async def request_tool_execution(
+    request: dict,
+    approval_service: ApprovalService = Depends(get_approval_service)
+):
+    """请求执行工具（需要审批）"""
+    tool_name = request.get("tool_name")
+    params = request.get("params", {})
+    user_id = request.get("user_id", "unknown")
+    agent_id = request.get("agent_id")
+    reason = request.get("reason", "")
+
+    # 创建审批请求
+    request_id = await approval_service.request_approval(
+        tool_name=tool_name,
+        params=params,
+        user_id=user_id,
+        agent_id=agent_id or "",
+        reason=reason
+    )
+
+    return {
+        "request_id": request_id,
+        "status": "pending"
+    }
+
+
+@router.get("/tools")
+async def list_tools(agent_manager: AgentManager = Depends(get_agent_manager)):
+    """列出所有可用工具"""
+    tools = agent_manager.list_tools()
+    return {"tools": [tool.dict() for tool in tools]}
+
+
+@router.get("/agents")
+async def list_agents(agent_manager: AgentManager = Depends(get_agent_manager)):
+    """列出所有已加载的 Agent"""
+    agents = agent_manager.list_agents()
+    return {"agents": agents}
+
+
+@router.get("/agent/{agent_id}")
+async def get_agent(
+    agent_id: str,
+    agent_manager: AgentManager = Depends(get_agent_manager)
+):
+    """获取特定 Agent 信息"""
+    agent_info = agent_manager.get_agent_info(agent_id)
+    if not agent_info:
+        raise HTTPException(status_code=404, detail="Agent not found")
+    return agent_info
diff --git a/agent/app/llm/factory.py b/agent/app/llm/factory.py
new file mode 100644
index 0000000..d47989d
--- /dev/null
+++ b/agent/app/llm/factory.py
@@ -0,0 +1,63 @@
+"""
+LLM 工厂 - 创建不同提供商的 LLM 实例
+"""
+from typing import Optional
+from langchain_openai import ChatOpenAI
+from langchain_anthropic import ChatAnthropic
+
+
+class LLMFactory:
+    """LLM 工厂类"""
+
+    def __init__(
+        self,
+        provider: str = "openai",
+        openai_api_key: Optional[str] = None,
+        anthropic_api_key: Optional[str] = None,
+        model: str = "gpt-3.5-turbo",
+        temperature: float = 0.7,
+        max_tokens: int = 2000
+    ):
+        self.provider = provider
+        self.openai_api_key = openai_api_key
+        self.anthropic_api_key = anthropic_api_key
+        self.model = model
+        self.temperature = temperature
+        self.max_tokens = max_tokens
+
+        self._llm = None
+
+    def get_llm(self):
+        """获取 LLM 实例"""
+        if self._llm is not None:
+            return self._llm
+
+        if self.provider == "openai":
+            self._llm = ChatOpenAI(
+                model=self.model,
+                temperature=self.temperature,
+                max_tokens=self.max_tokens,
+                api_key=self.openai_api_key
+            )
+        elif self.provider == "anthropic":
+            self._llm = ChatAnthropic(
+                model=self.model,
+                temperature=self.temperature,
+                max_tokens=self.max_tokens,
+                anthropic_api_key=self.anthropic_api_key
+            )
+        else:
+            raise ValueError(f"Unsupported provider: {self.provider}")
+
+        return self._llm
+
+    def set_model(self, model: str):
+        """设置模型"""
+        self.model = model
+        self._llm = None  # 重置 LLM 实例
+
+    def set_temperature(self, temperature: float):
+        """设置温度"""
+        self.temperature = temperature
+        if self._llm:
+            self._llm.temperature = temperature
diff --git a/agent/app/main.py b/agent/app/main.py
new file mode 100644
index 0000000..2c6f0ce
--- /dev/null
+++ b/agent/app/main.py
@@ -0,0 +1,84 @@
+"""
+X-Agents Python Agent Service
+智能体引擎服务入口
+"""
+import os
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api import routes
+from app.agent.core.agent import AgentManager
+from app.security.audit import AuditLogger
+
+
+# 全局组件
+agent_manager: AgentManager = None
+audit_logger: AuditLogger = None
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """应用生命周期管理"""
+    global agent_manager, audit_logger
+
+    # 启动时初始化
+    audit_logger = AuditLogger()
+
+    # 初始化 Agent 管理器
+    agent_manager = AgentManager(
+        llm_provider=os.getenv("LLM_PROVIDER", "openai"),
+        openai_api_key=os.getenv("OPENAI_API_KEY"),
+        anthropic_api_key=os.getenv("ANTHROPIC_API_KEY"),
+    )
+
+    # 加载 Agent 配置
+    await agent_manager.load_agents()
+
+    print("Agent service started successfully")
+
+    yield
+
+    # 关闭时清理
+    print("Agent service shutting down")
+
+
+# 创建 FastAPI 应用
+app = FastAPI(
+    title="X-Agents Agent Service",
+    description="AI Agent Engine for X-Agents Platform",
+    version="1.0.0",
+    lifespan=lifespan,
+)
+
+# CORS 中间件
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# 注册路由
+app.include_router(routes.router, prefix="/agent", tags=["Agent"])
+
+
+@app.get("/health")
+async def health_check():
+    """健康检查"""
+    return {
+        "status": "healthy",
+        "service": "agent",
+        "version": "1.0.0"
+    }
+
+
+@app.get("/")
+async def root():
+    """根路径"""
+    return {
+        "message": "X-Agents Agent Service",
+        "docs": "/docs"
+    }
diff --git a/agent/app/security/approval.py b/agent/app/security/approval.py
new file mode 100644
index 0000000..ad6ee23
--- /dev/null
+++ b/agent/app/security/approval.py
@@ -0,0 +1,104 @@
+"""
+审批服务 - 处理工具执行的审批流程
+"""
+import uuid
+from datetime import datetime
+from typing import Any, Dict, Optional
+from enum import Enum
+
+
+class ApprovalStatus(Enum):
+    """审批状态"""
+    PENDING = "pending"
+    APPROVED = "approved"
+    REJECTED = "rejected"
+
+
+class ApprovalService:
+    """审批服务"""
+
+    def __init__(self):
+        # 待审批队列
+        self.pending: Dict[str, dict] = {}
+        # 审批结果
+        self.results: Dict[str, ApprovalStatus] = {}
+
+    async def request_approval(
+        self,
+        tool_name: str,
+        params: dict,
+        user_id: str,
+        agent_id: str,
+        reason: str
+    ) -> str:
+        """
+        请求审批
+
+        Returns:
+            request_id: 审批请求ID
+        """
+        request_id = str(uuid.uuid4())
+
+        request = {
+            "request_id": request_id,
+            "tool_name": tool_name,
+            "params": params,
+            "user_id": user_id,
+            "agent_id": agent_id,
+            "reason": reason,
+            "status": ApprovalStatus.PENDING,
+            "created_at": datetime.now().isoformat()
+        }
+
+        self.pending[request_id] = request
+        self.results[request_id] = ApprovalStatus.PENDING
+
+        # TODO: 通知 Go 后端有新审批
+
+        return request_id
+
+    async def check_approval(self, request_id: str, timeout: int = 300) -> bool:
+        """
+        检查审批状态
+
+        Args:
+            request_id: 审批请求ID
+            timeout: 超时时间（秒）
+
+        Returns:
+            是否已批准
+        """
+        import asyncio
+
+        start = datetime.now()
+
+        while (datetime.now() - start).seconds < timeout:
+            status = self.results.get(request_id)
+
+            if status == ApprovalStatus.APPROVED:
+                return True
+            elif status == ApprovalStatus.REJECTED:
+                return False
+
+            await asyncio.sleep(1)
+
+        raise TimeoutError("Approval request timeout")
+
+    async def approve(self, request_id: str):
+        """批准请求"""
+        if request_id in self.pending:
+            self.pending[request_id]["status"] = ApprovalStatus.APPROVED
+            self.results[request_id] = ApprovalStatus.APPROVED
+
+    async def reject(self, request_id: str):
+        """拒绝请求"""
+        if request_id in self.pending:
+            self.pending[request_id]["status"] = ApprovalStatus.REJECTED
+            self.results[request_id] = ApprovalStatus.REJECTED
+
+    def get_pending(self) -> list[dict]:
+        """获取待审批列表"""
+        return [
+            req for req in self.pending.values()
+            if req["status"] == ApprovalStatus.PENDING
+        ]
diff --git a/agent/app/security/audit.py b/agent/app/security/audit.py
new file mode 100644
index 0000000..5392942
--- /dev/null
+++ b/agent/app/security/audit.py
@@ -0,0 +1,81 @@
+"""
+审计日志 - 记录所有 Agent 操作
+"""
+import json
+from datetime import datetime
+from typing import Any, Dict, Optional
+from pathlib import Path
+
+
+class AuditLogger:
+    """审计日志记录器"""
+
+    def __init__(self, log_file: str = "audit.log"):
+        self.log_file = log_file
+
+    def log(
+        self,
+        action: str,
+        agent_id: str = "",
+        session_id: str = "",
+        user_id: str = "",
+        details: Dict[str, Any] = None,
+        result: str = "success"
+    ):
+        """记录审计日志"""
+        entry = {
+            "timestamp": datetime.now().isoformat(),
+            "action": action,
+            "agent_id": agent_id,
+            "session_id": session_id,
+            "user_id": user_id,
+            "details": details or {},
+            "result": result
+        }
+
+        # 写入文件
+        self._write_log(entry)
+
+        # TODO: 发送到 Go 后端
+
+    def log_tool_execution(
+        self,
+        tool_name: str,
+        params: Dict[str, Any],
+        user_id: str,
+        agent_id: str,
+        approved: bool,
+        result: Any
+    ):
+        """记录工具执行"""
+        self.log(
+            action="tool_execution",
+            agent_id=agent_id,
+            user_id=user_id,
+            details={
+                "tool_name": tool_name,
+                "params": params,
+                "approved": approved,
+                "result_preview": str(result)[:200] if result else None
+            },
+            result="approved" if approved else "pending_approval"
+        )
+
+    def log_error(self, action: str, error: str, **kwargs):
+        """记录错误"""
+        self.log(
+            action=action,
+            details={"error": error, **kwargs},
+            result="error"
+        )
+
+    def _write_log(self, entry: dict):
+        """写入日志文件"""
+        try:
+            log_path = Path(self.log_file)
+            log_path.parent.mkdir(parents=True, exist_ok=True)
+
+            with open(log_path, "a", encoding="utf-8") as f:
+                f.write(json.dumps(entry, ensure_ascii=False) + "\n")
+        except Exception as e:
+            print(f"Failed to write audit log: {e}")
diff --git a/agent/requirements.txt b/agent/requirements.txt
new file mode 100644
index 0000000..d3054ee
--- /dev/null
+++ b/agent/requirements.txt
@@ -0,0 +1,19 @@
+# 核心依赖
+fastapi>=0.100.0
+uvicorn>=0.20.0
+pydantic>=2.0.0
+httpx>=0.24.0
+aiohttp>=3.8.0
+python-multipart>=0.0.5
+
+# LLM 支持
+openai>=1.0.0
+anthropic>=0.18.0
+langchain-core>=0.1.0
+langchain-openai>=0.0.2
+
+# 可选：向量数据库
+chromadb>=0.4.0
+
+# Redis
+redis>=4.5.0
diff --git a/docker-compose.dev.yml b/docker-compose.dev.yml
new file mode 100644
index 0000000..340dc1f
--- /dev/null
+++ b/docker-compose.dev.yml
@@ -0,0 +1,33 @@
+services:
+  # MySQL 数据库
+  x-agent-mysql:
+    image: mysql:8.0
+    container_name: x-agents-mysql
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_DATABASE: x_agents
+    volumes:
+      - mysql-data:/var/lib/mysql
+    ports:
+      - "6036:3306"
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+    command: --default-authentication-plugin=mysql_native_password
+
+  # Redis
+  x-agent-redis:
+    image: redis:7-alpine
+    container_name: x-agents-redis
+    ports:
+      - "6037:6379"
+    volumes:
+      - redis-data:/data
+    restart: unless-stopped
+
+volumes:
+  mysql-data:
+  redis-data:
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..5e40a50
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,34 @@
+services:
+  # 只启动数据库，Go 和 Python 在本地运行
+  db:
+    image: mysql:8.0
+    container_name: x-agents-mysql
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_DATABASE: x_agents
+      MYSQL_USER: xagents
+      MYSQL_PASSWORD: xagents123
+    volumes:
+      - mysql-data:/var/lib/mysql
+    ports:
+      - "3306:3306"
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+    command: --default-authentication-plugin=mysql_native_password
+
+  redis:
+    image: redis:7-alpine
+    container_name: x-agents-redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis-data:/data
+    restart: unless-stopped
+
+volumes:
+  mysql-data:
+  redis-data:
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
new file mode 100644
index 0000000..7ae26a7
--- /dev/null
+++ b/docs/ARCHITECTURE.md
@@ -0,0 +1,835 @@
+# X-Agents 智能体平台架构设计
+
+## 一、整体架构
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                                 用户层                                       │
+│                      Web / App / API Consumer                                │
+└─────────────────────────────────┬───────────────────────────────────────────┘
+                                  │ HTTP / WebSocket
+                                  ▼
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                            Go API Gateway                                    │
+│  ┌─────────────────────────────────────────────────────────────────────────┐│
+│  │  • HTTP Server (Gin)          • 认证鉴权 (JWT)                        ││
+│  │  • 路由管理                    • 限流熔断                              ││
+│  │  • 业务逻辑                    • 日志监控                              ││
+│  │  • 数据库操作                  • 权限控制 (RBAC)                      ││
+│  └─────────────────────────────────────────────────────────────────────────┘│
+└─────────────────────────────────┬───────────────────────────────────────────┘
+                                  │ HTTP JSON API
+                                  ▼
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                          Python Agent Engine                                 │
+│  ┌─────────────────────────────────────────────────────────────────────────┐│
+│  │  • FastAPI Server          • Agent Core (LangChain/AutoGen)          ││
+│  │  • LLM Adapter             • Tool Registry (白名单)                   ││
+│  │  • Memory Manager          • Sandbox Executor (沙盒)                 ││
+│  │  • RAG Pipeline            • Audit Logger                             ││
+│  └─────────────────────────────────────────────────────────────────────────┘│
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+---
+
+## 二、系统分层
+
+### 2.1 Go 后端层 (server/)
+
+```
+server/                          # Go API Gateway 服务
+├── cmd/api/                    # 程序入口
+│   └── main.go
+├── internal/
+│   ├── config/                 # 配置管理
+│   │   └── config.go
+│   ├── handler/                 # HTTP处理器
+│   │   ├── auth_handler.go     # 认证接口
+│   │   ├── chat_handler.go     # 聊天接口
+│   │   └── approval_handler.go # 审批接口
+│   ├── service/                # 业务逻辑
+│   │   ├── auth_service.go
+│   │   ├── chat_service.go
+│   │   └── approval_service.go
+│   ├── repository/              # 数据访问层
+│   │   ├── user_repo.go
+│   │   ├── agent_repo.go
+│   │   └── audit_repo.go
+│   ├── middleware/              # 中间件
+│   │   └── auth.go
+│   └── model/                   # 数据模型
+│       ├── user.go
+│       ├── agent.go
+│       └── audit.go
+├── config/                      # 配置文件
+│   └── config.yaml
+├── Dockerfile
+├── go.mod
+└── go.sum
+```
+
+### 2.2 Python Agent 层 (agent/)
+
+```
+agent/                          # Python Agent Engine
+├── app/
+│   ├── main.py                 # FastAPI入口
+│   ├── api/
+│   │   └── routes.py           # API路由
+│   ├── agent/
+│   │   ├── core/
+│   │   │   ├── agent.py        # Agent管理器
+│   │   │   └── executor.py    # Agent执行器
+│   │   ├── tools/
+│   │   │   ├── registry.py   # 工具注册表(白名单)
+│   │   │   └── impl/         # 工具实现
+│   │   │       ├── search.py
+│   │   │       ├── calculator.py
+│   │   │       └── time_tool.py
+│   │   └── memory/
+│   │       └── session.py     # 会话管理
+│   ├── llm/
+│   │   └── factory.py         # LLM工厂
+│   └── security/
+│       ├── audit.py           # 审计日志
+│       └── approval.py        # 审批服务
+├── requirements.txt
+├── Dockerfile
+└── pyproject.toml
+```
+
+### 2.3 根目录结构
+
+```
+X-Agents/
+├── server/                      # Go API Gateway
+├── agent/                       # Python Agent Engine
+├── web/                        # 前端 (Vue.js)
+├── docs/
+│   └── ARCHITECTURE.md        # 架构文档
+├── docker-compose.yml          # 容器编排
+├── .env.example               # 环境变量模板
+└── README.md
+│   ├── service/                # 业务逻辑
+│   │   ├── chat_service.go
+│   │   ├── agent_service.go
+│   │   └── approval_service.go  # 审批服务
+│   ├── repository/              # 数据访问层
+│   │   ├── user_repo.go
+│   │   ├── agent_repo.go
+│   │   └── audit_repo.go
+│   ├── middleware/              # 中间件
+│   │   ├── auth.go              # 认证中间件
+│   │   ├── rbac.go              # 权限中间件
+│   │   └── audit.go              # 审计中间件
+│   ├── client/                 # 外部服务客户端
+│   │   └── python_client.go     # Python服务HTTP客户端
+│   └── model/                   # 数据模型
+│       ├── user.go
+│       ├── agent.go
+│       └── audit.go
+├── pkg/
+│   ├── utils/                   # 工具函数
+│   └── errors/                 # 错误定义
+└── go.mod
+```
+
+### 2.2 Python AI 层 (智能逻辑)
+
+```
+python/
+├── app/
+│   ├── main.py                 # FastAPI入口
+│   ├── api/
+│   │   ├── routes.py           # 路由定义
+│   │   └── dependencies.py     # 依赖注入
+│   ├── agent/
+│   │   ├── core/
+│   │   │   ├── agent.py        # Agent核心
+│   │   │   ├── executor.py     # 执行器
+│   │   │   └── memory.py       # 记忆管理
+│   │   ├── tools/
+│   │   │   ├── registry.py    # 工具注册表
+│   │   │   ├── base.py         # 工具基类
+│   │   │   ├── security.py     # 安全检查
+│   │   │   └── impl/           # 具体工具实现
+│   │   │       ├── search.py
+│   │   │       ├── calculator.py
+│   │   │       ├── database.py
+│   │   │       └── sandbox.py  # 沙盒执行
+│   │   └── sandbox/
+│   │       ├── docker_sandbox.py
+│   │       └── wasm_sandbox.py
+│   ├── llm/
+│   │   ├── factory.py          # LLM工厂
+│   │   ├── openai_adapter.py
+│   │   ├── anthropic_adapter.py
+│   │   └── base.py
+│   ├── rag/
+│   │   ├── vector_store.py     # 向量存储
+│   │   ├── retriever.py        # 检索器
+│   │   └── pipeline.py         # RAG流程
+│   └── security/
+│       ├── permission.py       # 权限检查
+│       ├── approval.py         # 审批管理
+│       └── audit.py             # 安全审计
+├── requirements.txt
+└── pyproject.toml
+```
+
+---
+
+## 三、通信机制
+
+### 3.1 HTTP API 通信
+
+```
+┌──────────────────┐    HTTP POST     ┌──────────────────┐
+│                  │  ─────────────▶  │                  │
+│   Go Service     │   JSON Request   │  Python Service  │
+│   (Port: 8080)  │                  │  (Port: 8081)    │
+│                  │  ◀─────────────  │                  │
+└──────────────────┘   JSON Response  └──────────────────┘
+```
+
+#### 接口设计
+
+**1. Agent 聊天接口**
+
+```
+POST /api/v1/agent/chat
+Content-Type: application/json
+Authorization: Bearer <token>
+
+Request:
+{
+    "agent_id": "agent_001",
+    "message": "帮我查询用户数据",
+    "session_id": "session_xxx",
+    "context": {}  // 额外上下文
+}
+
+Response:
+{
+    "reply": "查询结果...",
+    "session_id": "session_xxx",
+    "tools_used": ["query_database"],
+    "metadata": {}
+}
+```
+
+**2. 工具执行审批接口**
+
+```
+POST /api/v1/tool/approve
+Request:
+{
+    "request_id": "req_001",
+    "tool_name": "execute_sql",
+    "params": {"sql": "SELECT * FROM users"},
+    "reason": "用户查询自己的订单",
+    "approved": true  // true=批准, false=拒绝
+}
+```
+
+**3. 工具执行状态查询**
+
+```
+GET /api/v1/tool/request/{request_id}
+Response:
+{
+    "status": "pending|approved|rejected|completed",
+    "tool_name": "execute_sql",
+    "created_at": "2024-01-01T00:00:00Z",
+    "result": null  // 如果已完成
+}
+```
+
+### 3.2 Go → Python 客户端
+
+```go
+// internal/client/python_client.go
+
+package client
+
+type PythonAgentClient struct {
+    baseURL string
+    client  *http.Client
+}
+
+type ChatRequest struct {
+    AgentID   string                 `json:"agent_id"`
+    Message    string                 `json:"message"`
+    SessionID  string                 `json:"session_id"`
+    Context    map[string]interface{} `json:"context"`
+}
+
+type ChatResponse struct {
+    Reply      string                 `json:"reply"`
+    SessionID  string                 `json:"session_id"`
+    ToolsUsed  []string              `json:"tools_used"`
+    Metadata   map[string]interface{} `json:"metadata"`
+}
+
+// Chat 调用Python Agent服务
+func (c *PythonAgentClient) Chat(ctx context.Context, req ChatRequest) (*ChatResponse, error) {
+    // 1. 构建请求
+    // 2. 添加超时
+    // 3. 发送请求
+    // 4. 处理响应
+    // 5. 错误处理
+}
+```
+
+---
+
+## 四、沙盒安全机制
+
+### 4.1 安全架构总览
+
+```
+┌─────────────────────────────────────────────────────────────────────────┐
+│                            安全控制层                                     │
+│                                                                          │
+│  ┌─────────────┐    ┌─────────────┐    ┌─────────────┐    ┌──────────┐ │
+│  │  权限管理    │    │  工具分级    │    │  人工审批    │    │  审计日志 │ │
+│  │  (RBAC)     │    │  (白名单)    │    │  (Approval) │    │  (Audit) │ │
+│  └──────┬──────┘    └──────┬──────┘    └──────┬──────┘    └────┬─────┘ │
+└─────────┼─────────────────┼─────────────────┼─────────────────┼────────┘
+          │                 │                 │                 │
+          ▼                 ▼                 ▼                 ▼
+┌─────────────────────────────────────────────────────────────────────────┐
+│                           Agent 执行层                                    │
+│                                                                          │
+│   User Request ─▶ Permission Check ─▶ Tool Lookup ─▶ Execute ─▶ Result │
+│                            │                    │            │           │
+│                            ▼                    ▼            ▼           │
+│                     [Need Approval] ──▶ [Pending Queue] ──▶ [Notify]    │
+└─────────────────────────────────────────────────────────────────────────┘
+```
+
+### 4.2 工具安全等级
+
+```python
+# python/app/agent/tools/security.py
+
+from enum import Enum
+from dataclasses import dataclass
+from typing import List, Callable
+
+class SecurityLevel(Enum):
+    """工具安全等级"""
+    SAFE = "safe"           # 安全操作：搜索、计算、读取公开数据
+    REVIEW = "review"      # 需要审核：修改数据、发送消息
+    DANGER = "danger"      # 危险操作：删除数据、执行代码、敏感API
+
+@dataclass
+class ToolMetadata:
+    """工具元数据"""
+    name: str
+    description: str
+    security_level: SecurityLevel
+    require_approval: bool          # 是否需要人工审批
+    allowed_roles: List[str]         # 允许调用的角色
+    rate_limit: int                 # 调用频率限制
+    timeout: int                    # 超时时间(秒)
+
+class ToolSecurity:
+    """工具安全管理"""
+
+    # 安全等级阈值
+    APPROVAL_THRESHOLD = SecurityLevel.REVIEW
+
+    @staticmethod
+    def check_permission(tool: ToolMetadata, user_role: str) -> bool:
+        """检查用户权限"""
+        if user_role in tool.allowed_roles:
+            return True
+        return False
+
+    @staticmethod
+    def need_approval(tool: ToolMetadata) -> bool:
+        """判断是否需要审批"""
+        return tool.security_level.value >= ToolSecurity.APPROVAL_THRESHOLD.value
+```
+
+### 4.3 工具注册与执行
+
+```python
+# python/app/agent/tools/registry.py
+
+from typing import Dict, Callable, Any
+from .security import ToolMetadata, SecurityLevel
+
+class ToolRegistry:
+    """工具注册表 - 白名单机制"""
+
+    def __init__(self):
+        self._tools: Dict[str, tuple[Callable, ToolMetadata]] = {}
+
+    def register(
+        self,
+        name: str,
+        func: Callable,
+        security_level: SecurityLevel = SecurityLevel.SAFE,
+        require_approval: bool = False,
+        allowed_roles: List[str] = None,
+        description: str = ""
+    ):
+        """注册工具到白名单"""
+        metadata = ToolMetadata(
+            name=name,
+            description=description,
+            security_level=security_level,
+            require_approval=require_approval or security_level == SecurityLevel.REVIEW,
+            allowed_roles=allowed_roles or ["user", "admin"],
+            rate_limit=100,
+            timeout=30
+        )
+        self._tools[name] = (func, metadata)
+
+    def get_tool(self, name: str) -> tuple[Callable, ToolMetadata]:
+        """获取工具（必须在白名单中）"""
+        if name not in self._tools:
+            raise ValueError(f"Tool '{name}' not found in whitelist")
+        return self._tools[name]
+
+    def list_tools(self) -> List[ToolMetadata]:
+        """列出所有可用工具"""
+        return [meta for _, meta in self._tools.values()]
+```
+
+### 4.4 沙盒执行
+
+```python
+# python/app/agent/tools/sandbox/docker_sandbox.py
+
+import subprocess
+import tempfile
+import shutil
+import os
+from typing import Any, Dict
+
+class DockerSandbox:
+    """Docker沙盒执行环境"""
+
+    def __init__(self, image: str = "python-sandbox:latest", timeout: int = 30):
+        self.image = image
+        self.timeout = timeout
+
+    def execute(self, code: str, language: str = "python") -> Dict[str, Any]:
+        """在沙盒中执行代码"""
+
+        # 1. 创建临时文件
+        with tempfile.NamedTemporaryFile(
+            mode='w',
+            suffix=f'.{language}',
+            delete=False
+        ) as f:
+            f.write(code)
+            temp_path = f.name
+
+        try:
+            # 2. Docker容器执行
+            result = subprocess.run(
+                [
+                    "docker", "run",
+                    "--rm",
+                    "--network", "none",           # 断网
+                    "--memory", "256m",            # 内存限制
+                    "--cpus", "0.5",               # CPU限制
+                    "-v", f"{temp_path}:/code/{os.path.basename(temp_path)}",
+                    self.image,
+                    "python", f"/code/{os.path.basename(temp_path)}"
+                ],
+                capture_output=True,
+                timeout=self.timeout
+            )
+
+            return {
+                "success": result.returncode == 0,
+                "output": result.stdout.decode(),
+                "error": result.stderr.decode()
+            }
+
+        except subprocess.TimeoutExpired:
+            return {
+                "success": False,
+                "output": "",
+                "error": "Execution timeout"
+            }
+        finally:
+            # 3. 清理临时文件
+            os.unlink(temp_path)
+
+# 使用示例
+@sandbox.execute
+def execute_code(code: str) -> str:
+    """安全执行用户代码"""
+    pass
+```
+
+### 4.5 Human in the Loop (人工审批)
+
+```python
+# python/app/security/approval.py
+
+from enum import Enum
+from dataclasses import dataclass
+from typing import Optional
+from datetime import datetime
+import asyncio
+
+class ApprovalStatus(Enum):
+    PENDING = "pending"
+    APPROVED = "approved"
+    REJECTED = "rejected"
+
+@dataclass
+class ApprovalRequest:
+    """审批请求"""
+    request_id: str
+    tool_name: str
+    params: dict
+    user_id: str
+    reason: str
+    status: ApprovalStatus
+    created_at: datetime
+    reviewed_at: Optional[datetime]
+    reviewed_by: Optional[str]
+
+class ApprovalService:
+    """审批服务"""
+
+    def __init__(self, http_client):
+        self.client = http_client
+        self.pending: Dict[str, ApprovalRequest] = {}
+
+    async def request_approval(
+        self,
+        tool_name: str,
+        params: dict,
+        user_id: str,
+        reason: str
+    ) -> str:
+        """请求审批"""
+        request_id = generate_uuid()
+
+        approval_req = ApprovalRequest(
+            request_id=request_id,
+            tool_name=tool_name,
+            params=params,
+            user_id=user_id,
+            reason=reason,
+            status=ApprovalStatus.PENDING,
+            created_at=datetime.now(),
+            reviewed_at=None,
+            reviewed_by=None
+        )
+
+        self.pending[request_id] = approval_req
+
+        # 通知Go后端有新审批
+        await self.notify_go_service(approval_req)
+
+        return request_id
+
+    async def wait_for_approval(self, request_id: str, timeout: int = 300) -> bool:
+        """等待审批结果"""
+        start = datetime.now()
+
+        while (datetime.now() - start).seconds < timeout:
+            if request_id in self.pending:
+                status = self.pending[request_id].status
+                if status == ApprovalStatus.APPROVED:
+                    return True
+                elif status == ApprovalStatus.REJECTED:
+                    return False
+            await asyncio.sleep(1)
+
+        raise TimeoutError("Approval request timeout")
+```
+
+### 4.6 全链路审计
+
+```python
+# python/app/security/audit.py
+
+from datetime import datetime
+from typing import Any, Dict
+import json
+
+class AuditLogger:
+    """审计日志"""
+
+    def __init__(self, log_file: str = "audit.log"):
+        self.log_file = log_file
+
+    def log(
+        self,
+        action: str,
+        user_id: str,
+        agent_id: str,
+        details: Dict[str, Any],
+        result: str = "success"
+    ):
+        """记录审计日志"""
+        entry = {
+            "timestamp": datetime.now().isoformat(),
+            "action": action,
+            "user_id": user_id,
+            "agent_id": agent_id,
+            "details": details,
+            "result": result
+        }
+
+        # 写入日志文件
+        with open(self.log_file, 'a') as f:
+            f.write(json.dumps(entry) + '\n')
+
+        # 发送到Go后端
+        self.send_to_backend(entry)
+
+    def log_tool_execution(
+        self,
+        user_id: str,
+        tool_name: str,
+        params: Dict[str, Any],
+        approved: bool,
+        result: Any
+    ):
+        """记录工具执行"""
+        self.log(
+            action="tool_execution",
+            user_id=user_id,
+            agent_id="",
+            details={
+                "tool_name": tool_name,
+                "params": params,
+                "approved": approved,
+                "result_preview": str(result)[:100]
+            }
+        )
+```
+
+---
+
+## 五、权限模型 (Go端)
+
+### 5.1 用户角色
+
+```go
+// go/internal/model/user.go
+
+package model
+
+// 权限级别
+type PermissionLevel int
+
+const (
+    PermissionRead    PermissionLevel = 1  // 只读
+    PermissionWrite   PermissionLevel = 2  // 读写
+    PermissionExecute PermissionLevel = 3  // 可执行工具
+    PermissionAdmin   PermissionLevel = 4  // 管理员
+)
+
+// 角色定义
+type Role struct {
+    ID          string           `json:"id"`
+    Name        string           `json:"name"`
+    Permissions []PermissionLevel `json:"permissions"`
+}
+
+// 用户
+type User struct {
+    ID       string   `json:"id"`
+    Username string   `json:"username"`
+    RoleID   string   `json:"role_id"`
+    Role     *Role    `json:"role,omitempty"`
+}
+```
+
+### 5.2 Agent定义
+
+```go
+// go/internal/model/agent.go
+
+package model
+
+type Agent struct {
+    ID          string            `json:"id"`
+    Name        string            `json:"name"`
+    Description string            `json:"description"`
+    OwnerID     string            `json:"owner_id"`
+
+    // Agent能力配置
+    Capabilities []string         `json:"capabilities"`  // 可用工具列表
+    MemoryLimit int64             `json:"memory_limit"` // 内存限制
+    Timeout     int               `json:"timeout"`      // 超时时间
+
+    // 安全配置
+    SecurityLevel SecurityLevel   `json:"security_level"`
+    AllowDangerousTools bool      `json:"allow_dangerous_tools"`
+
+    CreatedAt   time.Time         `json:"created_at"`
+    UpdatedAt   time.Time         `json:"updated_at"`
+}
+```
+
+---
+
+## 六、部署架构
+
+### 6.1 Docker Compose
+
+```yaml
+# docker-compose.yml
+
+version: '3.8'
+
+services:
+  # Go API 服务
+  go-api:
+    build: ./go
+    ports:
+      - "8080:8080"
+    environment:
+      - DATABASE_URL=postgres://user:pass@db:5432/agents
+      - PYTHON_SERVICE_URL=http://python-agent:8081
+      - JWT_SECRET=your-secret
+    depends_on:
+      - db
+      - python-agent
+
+  # Python Agent 服务
+  python-agent:
+    build: ./python
+    ports:
+      - "8081:8081"
+    environment:
+      - OPENAI_API_KEY=${OPENAI_API_KEY}
+      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+    volumes:
+      - ./python/app:/app
+      - /var/run/docker.sock:/var/run/docker.sock  # 如果需要Docker沙盒
+
+  # 数据库
+  db:
+    image: postgres:15
+    environment:
+      POSTGRES_USER: user
+      POSTGRES_PASSWORD: pass
+      POSTGRES_DB: agents
+    volumes:
+      - db-data:/var/lib/postgresql/data
+
+  # Redis (缓存/会话)
+  redis:
+    image: redis:7
+    volumes:
+      - redis-data:/data
+
+  # 向量数据库 (可选)
+  qdrant:
+    image: qdrant/qdrant
+    volumes:
+      - qdrant-data:/qdrant/storage
+
+volumes:
+  db-data:
+  redis-data:
+  qdrant-data:
+```
+
+---
+
+## 七、开发流程
+
+### 7.1 请求流程图
+
+```
+┌─────────┐     ┌─────────┐     ┌─────────┐     ┌─────────┐     ┌─────────┐
+│  用户   │────▶│  Go    │────▶│ Python  │────▶│  LLM   │────▶│ 返回   │
+│  请求   │     │  鉴权   │     │ Agent   │     │ +Tools │     │ 结果   │
+└─────────┘     └─────────┘     └─────────┘     └─────────┘     └─────────┘
+                    │               │
+                    │               │
+                    ▼               ▼
+              ┌─────────┐     ┌─────────┐
+              │ 检查    │     │ 权限    │
+              │ 权限    │     │ 检查    │
+              └─────────┘     └─────────┘
+                                │
+                                ▼
+                    ┌─────────────────────┐
+                    │ 工具安全等级判断     │
+                    └─────────────────────┘
+                                │
+              ┌─────────────────┼─────────────────┐
+              │                 │                 │
+              ▼                 ▼                 ▼
+        ┌──────────┐     ┌──────────┐     ┌──────────┐
+        │ Safe     │     │ Review   │     │ Danger   │
+        │ 直接执行  │     │ 等待审批  │     │ 拒绝执行 │
+        └──────────┘     └──────────┘     └──────────┘
+```
+
+### 7.2 目录结构总览
+
+```
+X-Agents/
+├── docs/
+│   └── ARCHITECTURE.md          # 本文档
+│
+├── go/                          # Go 后端
+│   ├── cmd/
+│   ├── internal/
+│   ├── pkg/
+│   ├── go.mod
+│   └── Dockerfile
+│
+├── python/                      # Python AI 层
+│   ├── app/
+│   │   ├── api/
+│   │   ├── agent/
+│   │   ├── llm/
+│   │   ├── rag/
+│   │   └── security/
+│   ├── requirements.txt
+│   └── Dockerfile
+│
+├── web/                         # 前端 (Vue)
+│   ├── src/
+│   └── package.json
+│
+├── docker-compose.yml           # 容器编排
+└── README.md
+```
+
+---
+
+## 八、总结
+
+### 架构核心原则
+
+| 原则 | 实现方式 |
+|------|----------|
+| **分层治理** | Go负责业务/权限，Python负责AI逻辑 |
+| **安全优先** | 工具分级+权限控制+人工审批+审计日志 |
+| **通信简洁** | HTTP JSON API，后续可升级gRPC |
+| **可扩展** | 模块化设计，支持多Agent/多Python服务 |
+| **可观测** | 全链路日志+监控 |
+
+### 安全特性
+
+- [x] 工具白名单机制
+- [x] 安全等级分级 (Safe/Review/Danger)
+- [x] RBAC权限控制
+- [x] Human in the Loop 人工审批
+- [x] 沙盒执行环境 (Docker)
+- [x] 全链路审计日志
+
+---
+
+*本文档将随项目开发持续更新*
diff --git a/web/agents.html b/docs/agents.html
similarity index 100%
rename from web/agents.html
rename to docs/agents.html
diff --git a/web/dashboard.html b/docs/dashboard.html
similarity index 100%
rename from web/dashboard.html
rename to docs/dashboard.html
diff --git a/web/graph.html b/docs/graph.html
similarity index 100%
rename from web/graph.html
rename to docs/graph.html
diff --git a/server/Dockerfile b/server/Dockerfile
new file mode 100644
index 0000000..9f14488
--- /dev/null
+++ b/server/Dockerfile
@@ -0,0 +1,32 @@
+# 构建阶段
+FROM golang:1.21-alpine AS builder
+
+WORKDIR /app
+
+# 安装依赖
+RUN apk add --no-cache git
+
+# 复制 go.mod 和 go.sum
+COPY go.mod go.sum ./
+RUN go mod download
+
+# 复制源代码
+COPY . .
+
+# 构建
+RUN CGO_ENABLED=0 GOOS=linux go build -o /server ./cmd/api
+
+# 运行阶段
+FROM alpine:latest
+
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /app
+
+# 复制构建产物
+COPY --from=builder /server .
+COPY config/ ./config/
+
+EXPOSE 8080
+
+CMD ["./server"]
diff --git a/server/api.exe b/server/api.exe
new file mode 100644
index 0000000..0d06de7
Binary files /dev/null and b/server/api.exe differ
diff --git a/server/cmd/api/main.go b/server/cmd/api/main.go
new file mode 100644
index 0000000..7caef09
--- /dev/null
+++ b/server/cmd/api/main.go
@@ -0,0 +1,162 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+	"x-agents/server/internal/config"
+	"x-agents/server/internal/handler"
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/repository"
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+// Logger 日志记录器
+type Logger struct {
+	successLog *log.Logger
+	errorLog   *log.Logger
+}
+
+func NewLogger() *Logger {
+	// 创建日志目录
+	today := time.Now().Format("2006-01-02")
+	logDir := filepath.Join("logs", today)
+	os.MkdirAll(logDir, 0755)
+
+	// 成功日志
+	successFile, _ := os.OpenFile(filepath.Join(logDir, "success.log"), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
+	successLogger := log.New(successFile, "", log.Ldate|log.Ltime|log.Lshortfile)
+
+	// 错误日志
+	errorFile, _ := os.OpenFile(filepath.Join(logDir, "failure.log"), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
+	errorLogger := log.New(errorFile, "", log.Ldate|log.Ltime|log.Lshortfile)
+
+	return &Logger{
+		successLog: successLogger,
+		errorLog:   errorLogger,
+	}
+}
+
+// LogRequest 记录请求
+func (l *Logger) LogRequest(method, path, body string, status int, duration time.Duration) {
+	entry := "[%s] %s %s %d %v"
+
+	if status >= 400 {
+		l.errorLog.Printf(entry, method, path, body, status, duration)
+	} else {
+		l.successLog.Printf(entry, method, path, body, status, duration)
+	}
+}
+
+var logger *Logger
+
+func main() {
+	// 初始化日志
+	logger = NewLogger()
+
+	// 1. 加载配置
+	cfg := config.Load()
+	log.Printf("=== Server starting, port=%s ===", cfg.Port)
+
+	// 2. 初始化数据库
+	db, err := config.InitDB(cfg)
+	if err != nil {
+		log.Fatalf("Failed to connect database: %v", err)
+	}
+
+	// 3. 自动迁移表
+	db.AutoMigrate(&model.DatabaseInfo{}, &model.SubTableInfo{})
+
+	// 4. 初始化 Repository
+	dbRepo := repository.NewDatabaseRepository(db)
+	subTableRepo := repository.NewSubTableRepository(db)
+
+	// 5. 初始化 Service
+	dbService := service.NewDatabaseService(dbRepo, subTableRepo)
+	subTableService := service.NewSubTableService(subTableRepo, dbRepo)
+
+	// 6. 初始化 Handler
+	dbHandler := handler.NewDatabaseHandler(dbService)
+	subTableHandler := handler.NewSubTableHandler(subTableService)
+	systemHandler := handler.NewSystemHandler()
+
+	// 7. 设置路由
+	r := gin.New()
+
+	// 添加日志和恢复中间件
+	r.Use(gin.Logger())
+	r.Use(gin.Recovery())
+
+	// 请求日志中间件
+	r.Use(func(c *gin.Context) {
+		start := time.Now()
+		path := c.Request.URL.Path
+
+		// 记录请求体
+		var requestBody []byte
+		if c.Request.Method == "POST" || c.Request.Method == "PUT" {
+			requestBody, _ = io.ReadAll(c.Request.Body)
+			c.Request.Body = io.NopCloser(bytes.NewBuffer(requestBody))
+		}
+
+		c.Next()
+
+		// 记录响应日志
+		latency := time.Since(start)
+		status := c.Writer.Status()
+
+		// 使用日志系统记录
+		logger.LogRequest(c.Request.Method, path, string(requestBody), status, latency)
+	})
+
+	// CORS 中间件
+	r.Use(func(c *gin.Context) {
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(204)
+			return
+		}
+
+		c.Next()
+	})
+
+	// 数据库管理模块
+	databaseGroup := r.Group("/database")
+	{
+		databaseGroup.GET("/list", dbHandler.List)
+		databaseGroup.GET("/:id", dbHandler.GetByID)
+		databaseGroup.POST("/check", dbHandler.Check)
+		databaseGroup.POST("/add", dbHandler.Create)
+		databaseGroup.PUT("/:id", dbHandler.Update)
+		databaseGroup.DELETE("/:id", dbHandler.Delete)
+	}
+
+	// 子表映射管理模块
+	subTableGroup := r.Group("/sub-table")
+	{
+		subTableGroup.POST("/add", subTableHandler.Create)
+		subTableGroup.GET("/:id", subTableHandler.GetByID)
+		subTableGroup.GET("/database/:database_id", subTableHandler.ListByDatabase)
+		subTableGroup.GET("/mapping/:database_id", subTableHandler.GetMappingFromFile)
+		subTableGroup.GET("/ddl/:database_id", subTableHandler.GetTablesDDL)
+		subTableGroup.PUT("/:id", subTableHandler.Update)
+		subTableGroup.DELETE("/:id", subTableHandler.Delete)
+	}
+
+	// 系统信息模块
+	r.GET("/system/info", systemHandler.GetSystemInfo)
+
+	// 8. 启动服务
+	log.Printf("Server starting on :%s", cfg.Port)
+	if err := r.Run(":" + cfg.Port); err != nil {
+		log.Fatalf("Failed to start server: %v", err)
+	}
+}
diff --git a/server/config/config.yaml b/server/config/config.yaml
new file mode 100644
index 0000000..b4882d3
--- /dev/null
+++ b/server/config/config.yaml
@@ -0,0 +1,6 @@
+# 本地开发配置
+port: "8082"
+jwt_secret: "dev-secret-key"
+# Docker 内访问用 db:3306，本地访问用 localhost:6036
+database_url: "root:root@tcp(localhost:6036)/x_agents?charset=utf8mb4&parseTime=True&loc=Local"
+python_service_url: "http://localhost:8081"
diff --git a/server/go.mod b/server/go.mod
new file mode 100644
index 0000000..8c2a7ed
--- /dev/null
+++ b/server/go.mod
@@ -0,0 +1,65 @@
+module x-agents/server
+
+go 1.21
+
+require (
+	github.com/gin-gonic/gin v1.9.1
+	github.com/go-sql-driver/mysql v1.7.0
+	github.com/golang-jwt/jwt/v5 v5.2.0
+	github.com/google/uuid v1.5.0
+	github.com/lib/pq v1.10.9
+	github.com/spf13/viper v1.18.2
+	golang.org/x/crypto v0.16.0
+	gorm.io/driver/mysql v1.5.2
+	gorm.io/gorm v1.25.5
+)
+
+require (
+	github.com/bytedance/sonic v1.9.1 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-ole/go-ole v1.2.6 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.14.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
+	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/shirou/gopsutil/v3 v3.24.5 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/tklauser/go-sysconf v0.3.12 // indirect
+	github.com/tklauser/numcpus v0.6.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/arch v0.3.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/server/go.sum b/server/go.sum
new file mode 100644
index 0000000..bf1fc27
--- /dev/null
+++ b/server/go.sum
@@ -0,0 +1,169 @@
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diff --git a/server/internal/config/config.go b/server/internal/config/config.go
new file mode 100644
index 0000000..431e5a4
--- /dev/null
+++ b/server/internal/config/config.go
@@ -0,0 +1,61 @@
+package config
+
+import (
+	"fmt"
+	"log"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+
+	"github.com/spf13/viper"
+)
+
+type Config struct {
+	Port              string
+	JWTSecret         string
+	DatabaseURL       string
+	PythonServiceURL string
+}
+
+func Load() *Config {
+	viper.SetConfigName("config")
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath("./config")
+	viper.AddConfigPath("../config")
+	viper.AddConfigPath("../../config")
+
+	// 默认值
+	viper.SetDefault("port", "8080")
+	viper.SetDefault("jwt_secret", "your-secret-key-change-in-production")
+	viper.SetDefault("python_service_url", "http://localhost:8081")
+	viper.SetDefault("database_url", "root:root@tcp(localhost:3306)/x_agents?charset=utf8mb4&parseTime=True&loc=Local")
+
+	if err := viper.ReadInConfig(); err != nil {
+		log.Printf("Using default config: %v", err)
+	}
+
+	return &Config{
+		Port:              viper.GetString("port"),
+		JWTSecret:         viper.GetString("jwt_secret"),
+		DatabaseURL:       viper.GetString("database_url"),
+		PythonServiceURL: viper.GetString("python_service_url"),
+	}
+}
+
+func InitDB(cfg *Config) (*gorm.DB, error) {
+	dsn := cfg.DatabaseURL
+	if dsn == "" {
+		return nil, fmt.Errorf("database URL is empty")
+	}
+
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Info),
+	})
+	if err != nil {
+		return nil, fmt.Errorf("failed to connect database: %w", err)
+	}
+
+	log.Println("Database connected successfully")
+	return db, nil
+}
diff --git a/server/internal/handler/approval_handler.go b/server/internal/handler/approval_handler.go
new file mode 100644
index 0000000..db90993
--- /dev/null
+++ b/server/internal/handler/approval_handler.go
@@ -0,0 +1,80 @@
+package handler
+
+import (
+	"net/http"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+type ApprovalHandler struct {
+	approvalService *service.ApprovalService
+}
+
+func NewApprovalHandler(approvalService *service.ApprovalService) *ApprovalHandler {
+	return &ApprovalHandler{approvalService: approvalService}
+}
+
+// Approve 处理审批请求
+func (h *ApprovalHandler) Approve(c *gin.Context) {
+	var req struct {
+		RequestID string `json:"request_id" binding:"required"`
+		Approved  bool   `json:"approved"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	userID, exists := c.Get("user_id")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		return
+	}
+
+	var result interface{}
+	var err error
+
+	if req.Approved {
+		result, err = h.approvalService.Approve(req.RequestID, userID.(string))
+	} else {
+		result, err = h.approvalService.Reject(req.RequestID, userID.(string))
+	}
+
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, result)
+}
+
+// GetStatus 获取审批状态
+func (h *ApprovalHandler) GetStatus(c *gin.Context) {
+	requestID := c.Param("id")
+
+	result, err := h.approvalService.GetApproval(requestID)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "request not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, result)
+}
+
+// ListPending 获取待审批列表
+func (h *ApprovalHandler) ListPending(c *gin.Context) {
+	result, err := h.approvalService.GetPendingApprovals()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if result == nil {
+		result = []model.ToolApprovalRequest{}
+	}
+
+	c.JSON(http.StatusOK, gin.H{"pending": result})
+}
diff --git a/server/internal/handler/auth_handler.go b/server/internal/handler/auth_handler.go
new file mode 100644
index 0000000..0c35032
--- /dev/null
+++ b/server/internal/handler/auth_handler.go
@@ -0,0 +1,80 @@
+package handler
+
+import (
+	"net/http"
+
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+type AuthHandler struct {
+	authService *service.AuthService
+}
+
+func NewAuthHandler(authService *service.AuthService) *AuthHandler {
+	return &AuthHandler{authService: authService}
+}
+
+type LoginRequest struct {
+	Username string `json:"username" binding:"required"`
+	Password string `json:"password" binding:"required"`
+}
+
+type LoginResponse struct {
+	Token string      `json:"token"`
+	User  interface{} `json:"user"`
+}
+
+// Login 处理登录
+func (h *AuthHandler) Login(c *gin.Context) {
+	var req LoginRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	resp, err := h.authService.Login(service.LoginRequest{
+		Username: req.Username,
+		Password: req.Password,
+	})
+	if err != nil {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, LoginResponse{
+		Token: resp.Token,
+		User: gin.H{
+			"id":       resp.User.ID,
+			"username": resp.User.Username,
+			"email":    resp.User.Email,
+			"role":     resp.User.RoleID,
+		},
+	})
+}
+
+// Register 处理注册
+func (h *AuthHandler) Register(c *gin.Context) {
+	var req struct {
+		Username string `json:"username" binding:"required"`
+		Password string `json:"password" binding:"required"`
+		Email    string `json:"email"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	user, err := h.authService.Register(req.Username, req.Password, req.Email)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{
+		"id":       user.ID,
+		"username": user.Username,
+		"email":    user.Email,
+	})
+}
diff --git a/server/internal/handler/chat_handler.go b/server/internal/handler/chat_handler.go
new file mode 100644
index 0000000..9af5d02
--- /dev/null
+++ b/server/internal/handler/chat_handler.go
@@ -0,0 +1,89 @@
+package handler
+
+import (
+	"net/http"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+type ChatHandler struct {
+	chatService *service.ChatService
+}
+
+func NewChatHandler(chatService *service.ChatService) *ChatHandler {
+	return &ChatHandler{chatService: chatService}
+}
+
+// Chat 处理聊天请求
+func (h *ChatHandler) Chat(c *gin.Context) {
+	var req model.AgentRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// 从上下文获取用户ID（由中间件设置）
+	userID, exists := c.Get("user_id")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		return
+	}
+
+	resp, err := h.chatService.Chat(c.Request.Context(), userID.(string), req)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, resp)
+}
+
+// ListAgents 获取 Agent 列表
+func (h *ChatHandler) ListAgents(c *gin.Context) {
+	userID, exists := c.Get("user_id")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		return
+	}
+
+	agents, err := h.chatService.ListAgents(userID.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if agents == nil {
+		agents = []model.Agent{}
+	}
+
+	c.JSON(http.StatusOK, gin.H{"agents": agents})
+}
+
+// CreateAgent 创建 Agent
+func (h *ChatHandler) CreateAgent(c *gin.Context) {
+	userID, exists := c.Get("user_id")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		return
+	}
+
+	var req struct {
+		Name        string `json:"name" binding:"required"`
+		Description string `json:"description"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	agent, err := h.chatService.CreateAgent(userID.(string), req.Name, req.Description)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, agent)
+}
diff --git a/server/internal/handler/database_handler.go b/server/internal/handler/database_handler.go
new file mode 100644
index 0000000..5290016
--- /dev/null
+++ b/server/internal/handler/database_handler.go
@@ -0,0 +1,112 @@
+package handler
+
+import (
+	"net/http"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+type DatabaseHandler struct {
+	service *service.DatabaseService
+}
+
+func NewDatabaseHandler(svc *service.DatabaseService) *DatabaseHandler {
+	return &DatabaseHandler{service: svc}
+}
+
+// Check 检查数据库连接
+func (h *DatabaseHandler) Check(c *gin.Context) {
+	var req model.CheckRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	result, err := h.service.Check(req)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, result)
+}
+
+// Create 创建数据库信息
+func (h *DatabaseHandler) Create(c *gin.Context) {
+	var req model.CreateDatabaseRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	info, err := h.service.Create(req)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, info)
+}
+
+// GetByID 获取详情
+func (h *DatabaseHandler) GetByID(c *gin.Context) {
+	id := c.Param("id")
+
+	info, err := h.service.GetByID(id)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, info)
+}
+
+// List 获取列表
+func (h *DatabaseHandler) List(c *gin.Context) {
+	list, err := h.service.List()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if list == nil {
+		list = []model.DatabaseInfo{}
+	}
+
+	c.JSON(http.StatusOK, gin.H{"list": list})
+}
+
+// Update 更新
+func (h *DatabaseHandler) Update(c *gin.Context) {
+	id := c.Param("id")
+
+	var req model.UpdateDatabaseRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	info, err := h.service.Update(id, req)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, info)
+}
+
+// Delete 删除
+func (h *DatabaseHandler) Delete(c *gin.Context) {
+	id := c.Param("id")
+
+	err := h.service.Delete(id)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "deleted"})
+}
diff --git a/server/internal/handler/sub_table_handler.go b/server/internal/handler/sub_table_handler.go
new file mode 100644
index 0000000..31a533d
--- /dev/null
+++ b/server/internal/handler/sub_table_handler.go
@@ -0,0 +1,132 @@
+package handler
+
+import (
+	"net/http"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+type SubTableHandler struct {
+	service *service.SubTableService
+}
+
+func NewSubTableHandler(svc *service.SubTableService) *SubTableHandler {
+	return &SubTableHandler{service: svc}
+}
+
+// Create 创建子表信息
+func (h *SubTableHandler) Create(c *gin.Context) {
+	var req model.CreateSubTableRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	info, err := h.service.Create(req)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, info)
+}
+
+// GetByID 获取详情
+func (h *SubTableHandler) GetByID(c *gin.Context) {
+	id := c.Param("id")
+
+	info, err := h.service.GetByID(id)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, info)
+}
+
+// ListByDatabase 获取数据库下所有子表
+func (h *SubTableHandler) ListByDatabase(c *gin.Context) {
+	databaseID := c.Param("database_id")
+
+	list, err := h.service.ListByDatabaseID(databaseID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if list == nil {
+		list = []model.SubTableInfo{}
+	}
+
+	c.JSON(http.StatusOK, gin.H{"list": list})
+}
+
+// GetMappingFromFile 从文件获取映射
+func (h *SubTableHandler) GetMappingFromFile(c *gin.Context) {
+	databaseID := c.Param("database_id")
+
+	mapping, err := h.service.GetMappingFromFile(databaseID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if mapping == nil {
+		c.JSON(http.StatusOK, gin.H{"mapping": nil, "message": "no mapping file found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"mapping": mapping})
+}
+
+// Update 更新
+func (h *SubTableHandler) Update(c *gin.Context) {
+	id := c.Param("id")
+
+	var req model.UpdateSubTableRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	info, err := h.service.Update(id, req)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, info)
+}
+
+// Delete 删除
+func (h *SubTableHandler) Delete(c *gin.Context) {
+	id := c.Param("id")
+
+	err := h.service.Delete(id)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "deleted"})
+}
+
+// GetTablesDDL 获取数据库下所有表及DDL
+func (h *SubTableHandler) GetTablesDDL(c *gin.Context) {
+	databaseID := c.Param("database_id")
+
+	tables, err := h.service.GetTableDDLFromDatabase(databaseID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if tables == nil {
+		tables = []model.TableDDLInfo{}
+	}
+
+	c.JSON(http.StatusOK, gin.H{"tables": tables})
+}
diff --git a/server/internal/handler/system_handler.go b/server/internal/handler/system_handler.go
new file mode 100644
index 0000000..2408a1e
--- /dev/null
+++ b/server/internal/handler/system_handler.go
@@ -0,0 +1,62 @@
+package handler
+
+import (
+	"net/http"
+
+	"x-agents/server/internal/model"
+
+	"github.com/gin-gonic/gin"
+)
+
+type SystemHandler struct{}
+
+func NewSystemHandler() *SystemHandler {
+	return &SystemHandler{}
+}
+
+// GetSystemInfo 获取系统信息
+func (h *SystemHandler) GetSystemInfo(c *gin.Context) {
+	info, err := getSystemInfo()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, info)
+}
+
+// getSystemInfo 获取系统信息
+func getSystemInfo() (*model.SystemInfo, error) {
+	// 获取CPU使用率
+	cpuPercent, err := getCPUPercent()
+	if err != nil {
+		return nil, err
+	}
+
+	// 获取CPU核心数
+	coreCount, err := getCPUCoreCount()
+	if err != nil {
+		coreCount = 0
+	}
+
+	// 获取CPU型号
+	modelName, err := getCPUModelName()
+	if err != nil {
+		modelName = "Unknown"
+	}
+
+	// 获取内存信息
+	memoryInfo, err := getMemoryInfo()
+	if err != nil {
+		return nil, err
+	}
+
+	return &model.SystemInfo{
+		CPU: model.CPUInfo{
+			Percent:   cpuPercent,
+			CoreCount: coreCount,
+			ModelName: modelName,
+		},
+		Memory: *memoryInfo,
+	}, nil
+}
diff --git a/server/internal/handler/system_helper.go b/server/internal/handler/system_helper.go
new file mode 100644
index 0000000..28448b7
--- /dev/null
+++ b/server/internal/handler/system_helper.go
@@ -0,0 +1,60 @@
+package handler
+
+import (
+	"github.com/shirou/gopsutil/v3/cpu"
+	"github.com/shirou/gopsutil/v3/mem"
+	"x-agents/server/internal/model"
+)
+
+func getCPUPercent() (float64, error) {
+	percent, err := cpu.Percent(0, false)
+	if err != nil {
+		return 0, err
+	}
+	if len(percent) > 0 {
+		return percent[0], nil
+	}
+	return 0, nil
+}
+
+func getCPUCoreCount() (int, error) {
+	count, err := cpu.Counts(false)
+	if err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
+func getCPUModelName() (string, error) {
+	info, err := cpu.Info()
+	if err != nil {
+		return "Unknown", err
+	}
+	if len(info) > 0 {
+		return info[0].ModelName, nil
+	}
+	return "Unknown", nil
+}
+
+func getMemoryInfo() (*model.MemoryInfo, error) {
+	v, err := mem.VirtualMemory()
+	if err != nil {
+		return nil, err
+	}
+
+	// 计算使用率
+	percent := 0.0
+	if v.Total > 0 {
+		percent = float64(v.Used) / float64(v.Total) * 100
+	}
+
+	return &model.MemoryInfo{
+		Total:       v.Total,
+		Used:        v.Used,
+		Available:   v.Available,
+		Percent:     percent,
+		TotalGB:     float64(v.Total) / 1024 / 1024 / 1024,
+		UsedGB:      float64(v.Used) / 1024 / 1024 / 1024,
+		AvailableGB: float64(v.Available) / 1024 / 1024 / 1024,
+	}, nil
+}
diff --git a/server/internal/middleware/auth.go b/server/internal/middleware/auth.go
new file mode 100644
index 0000000..e97ebb2
--- /dev/null
+++ b/server/internal/middleware/auth.go
@@ -0,0 +1,71 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+
+	"x-agents/server/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+// CORS 中间件
+func CORS() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Header("Access-Control-Allow-Origin", "*")
+		c.Header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+		c.Header("Access-Control-Allow-Headers", "Origin, Content-Type, Authorization")
+		c.Header("Access-Control-Max-Age", "86400")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusNoContent)
+			return
+		}
+
+		c.Next()
+	}
+}
+
+// Recovery 中间件 - 恢复 panic
+func Recovery() gin.HandlerFunc {
+	return gin.Recovery()
+}
+
+// Auth 认证中间件
+func Auth(jwtSecret string) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 从 Header 获取 Token
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "authorization header required"})
+			c.Abort()
+			return
+		}
+
+		// 解析 Bearer Token
+		parts := strings.SplitN(authHeader, " ", 2)
+		if len(parts) != 2 || parts[0] != "Bearer" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid authorization format"})
+			c.Abort()
+			return
+		}
+
+		tokenString := parts[1]
+
+		// 验证 Token
+		authService := service.NewAuthService(jwtSecret, nil)
+		claims, err := authService.ValidateToken(tokenString)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
+			c.Abort()
+			return
+		}
+
+		// 将用户信息存入上下文
+		c.Set("user_id", claims["sub"])
+		c.Set("username", claims["username"])
+		c.Set("role", claims["role"])
+
+		c.Next()
+	}
+}
diff --git a/server/internal/model/agent.go b/server/internal/model/agent.go
new file mode 100644
index 0000000..13aa32c
--- /dev/null
+++ b/server/internal/model/agent.go
@@ -0,0 +1,53 @@
+package model
+
+import (
+	"time"
+)
+
+// SecurityLevel 安全等级
+type SecurityLevel string
+
+const (
+	SecurityLevelSafe   SecurityLevel = "safe"
+	SecurityLevelReview SecurityLevel = "review"
+	SecurityLevelDanger SecurityLevel = "danger"
+)
+
+// Agent 智能体
+type Agent struct {
+	ID          string   `json:"id" gorm:"primaryKey"`
+	Name        string   `json:"name" gorm:"size:100;not null"`
+	Description string   `json:"description" gorm:"type:text"`
+	OwnerID     string   `json:"owner_id" gorm:"size:50;not null;index"`
+
+	// Agent能力配置
+	Capabilities []string `json:"capabilities" gorm:"type:text"` // JSON数组，可用工具列表
+	MemoryLimit  int64    `json:"memory_limit" gorm:"default:134217728"` // 128MB
+	Timeout      int      `json:"timeout" gorm:"default:60"` // 60秒
+
+	// 安全配置
+	SecurityLevel       SecurityLevel `json:"security_level" gorm:"size:20;default:'safe'"`
+	AllowDangerousTools bool          `json:"allow_dangerous_tools" gorm:"default:false"`
+
+	// 状态
+	IsActive bool `json:"is_active" gorm:"default:true"`
+
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+// AgentRequest 聊天请求
+type AgentRequest struct {
+	AgentID   string                 `json:"agent_id" binding:"required"`
+	Message   string                 `json:"message" binding:"required"`
+	SessionID string                 `json:"session_id"`
+	Context   map[string]interface{} `json:"context"`
+}
+
+// AgentResponse 聊天响应
+type AgentResponse struct {
+	Reply     string                 `json:"reply"`
+	SessionID string                 `json:"session_id"`
+	ToolsUsed []string              `json:"tools_used"`
+	Metadata  map[string]interface{} `json:"metadata"`
+}
diff --git a/server/internal/model/audit.go b/server/internal/model/audit.go
new file mode 100644
index 0000000..872bcf0
--- /dev/null
+++ b/server/internal/model/audit.go
@@ -0,0 +1,76 @@
+package model
+
+import (
+	"encoding/json"
+	"time"
+)
+
+// AuditAction 审计动作
+type AuditAction string
+
+const (
+	AuditActionLogin         AuditAction = "login"
+	AuditActionLogout        AuditAction = "logout"
+	AuditActionChat          AuditAction = "chat"
+	AuditActionToolExecute   AuditAction = "tool_execute"
+	AuditActionToolApprove   AuditAction = "tool_approve"
+	AuditActionToolReject    AuditAction = "tool_reject"
+	AuditActionAgentCreate   AuditAction = "agent_create"
+	AuditActionAgentUpdate   AuditAction = "agent_update"
+	AuditActionAgentDelete   AuditAction = "agent_delete"
+)
+
+// AuditLog 审计日志
+type AuditLog struct {
+	ID         string      `json:"id" gorm:"primaryKey"`
+	UserID     string      `json:"user_id" gorm:"size:50;index"`
+	AgentID    string      `json:"agent_id" gorm:"size:50;index"`
+	Action     AuditAction `json:"action" gorm:"size:50;index"`
+	Details    JSONMap     `json:"details" gorm:"type:jsonb"`
+	Result     string      `json:"result" gorm:"size:20"` // success, failed, rejected
+	IPAddress  string      `json:"ip_address" gorm:"size:45"`
+	UserAgent  string      `json:"user_agent" gorm:"size:255"`
+	CreatedAt  time.Time   `json:"created_at" gorm:"index"`
+}
+
+// ApprovalStatus 审批状态
+type ApprovalStatus string
+
+const (
+	ApprovalStatusPending   ApprovalStatus = "pending"
+	ApprovalStatusApproved ApprovalStatus = "approved"
+	ApprovalStatusRejected ApprovalStatus = "rejected"
+)
+
+// ToolApprovalRequest 工具审批请求
+type ToolApprovalRequest struct {
+	ID          string          `json:"id" gorm:"primaryKey"`
+	ToolName    string          `json:"tool_name" gorm:"size:100;index"`
+	Params      JSONMap         `json:"params" gorm:"type:jsonb"`
+	UserID      string          `json:"user_id" gorm:"size:50;index"`
+	AgentID     string          `json:"agent_id" gorm:"size:50"`
+	Reason      string          `json:"reason" gorm:"type:text"`
+	Status      ApprovalStatus `json:"status" gorm:"size:20;default:'pending';index"`
+	ReviewedBy  *string         `json:"reviewed_by" gorm:"size:50"`
+	ReviewedAt  *time.Time     `json:"reviewed_at"`
+	Result      *string        `json:"result" gorm:"type:text"` // 执行结果
+	CreatedAt   time.Time      `json:"created_at" gorm:"index"`
+	UpdatedAt   time.Time      `json:"updated_at"`
+}
+
+// JSONMap JSON数据映射
+type JSONMap map[string]interface{}
+
+func (j JSONMap) MarshalJSON() ([]byte, error) {
+	if j == nil {
+		return []byte("null"), nil
+	}
+	return json.Marshal(j)
+}
+
+func (j *JSONMap) UnmarshalJSON(data []byte) error {
+	if j == nil {
+		*j = make(map[string]interface{})
+	}
+	return json.Unmarshal(data, j)
+}
diff --git a/server/internal/model/database_info.go b/server/internal/model/database_info.go
new file mode 100644
index 0000000..61ad2c1
--- /dev/null
+++ b/server/internal/model/database_info.go
@@ -0,0 +1,83 @@
+package model
+
+import (
+	"time"
+)
+
+// DatabaseInfo 数据库连接信息
+type DatabaseInfo struct {
+	ID          string    `json:"id" gorm:"primaryKey;size:36"`       // UUID
+	Name        string    `json:"name" gorm:"size:100;not null"`     // 数据库名称
+	Description string    `json:"description" gorm:"size:500"`       // 描述
+	DBType      string    `json:"db_type" gorm:"size:20;not null"`  // 数据库类型: mysql, postgres, mongodb等
+	Host        string    `json:"host" gorm:"size:255;not null"`    // 主机地址
+	Port        int       `json:"port" gorm:"not null"`             // 端口
+	Username    string    `json:"username" gorm:"size:100;not null"` // 用户名
+	Password    string    `json:"password" gorm:"size:255"`          // 密码（建议加密存储）
+	Database    string    `json:"database" gorm:"size:100"`          // 数据库名
+	TableCount  int       `json:"table_count" gorm:"default:0"`     // 子表数量
+
+	// 连接选项
+	Charset    string `json:"charset" gorm:"size:20;default:utf8mb4"` // 字符集
+	SSLMode    string `json:"ssl_mode" gorm:"size:20"`                // SSL模式
+
+	// 时间
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+// TableName 表名
+func (DatabaseInfo) TableName() string {
+	return "database_info"
+}
+
+// CreateRequest 创建数据库信息请求（支持同时保存子表配置）
+type CreateDatabaseRequest struct {
+	Name        string                  `json:"name" binding:"required"`
+	Description string                  `json:"description"`
+	DBType      string                  `json:"db_type" binding:"required"`
+	Host        string                  `json:"host" binding:"required"`
+	Port        int                     `json:"port" binding:"required"`
+	Username    string                  `json:"username" binding:"required"`
+	Password    string                  `json:"password"`
+	Database    string                  `json:"database"`
+	Charset     string                  `json:"charset"`
+	SSLMode     string                  `json:"ssl_mode"`
+	SubTables   []CreateSubTableRequest `json:"sub_tables"` // 可选，子表配置
+}
+
+// UpdateRequest 更新数据库信息请求
+type UpdateDatabaseRequest struct {
+	Name        string `json:"name"`
+	Description string `json:"description"`
+	DBType      string `json:"db_type"`
+	Host        string `json:"host"`
+	Port        int    `json:"port"`
+	Username    string `json:"username"`
+	Password    string `json:"password"`
+	Database    string `json:"database"`
+	TableCount  int    `json:"table_count"`
+	Charset     string `json:"charset"`
+	SSLMode     string `json:"ssl_mode"`
+}
+
+// CheckRequest 检查连接请求
+type CheckRequest struct {
+	DBType     string `json:"db_type" binding:"required"`
+	Host       string `json:"host" binding:"required"`
+	Port       int    `json:"port" binding:"required"`
+	Username   string `json:"username" binding:"required"`
+	Password   string `json:"password"`
+	Database   string `json:"database"`
+	Charset    string `json:"charset"`
+	SSLMode    string `json:"ssl_mode"`
+	DatabaseID string `json:"database_id"` // 可选，用于获取已保存的字段映射
+}
+
+// CheckResponse 检查连接响应
+type CheckResponse struct {
+	Success  bool           `json:"success"`            // 是否连接成功
+	Message  string         `json:"message"`            // 消息
+	Tables   []TableDDLInfo `json:"tables,omitempty"`   // 表列表（连接成功时返回）
+	Database string         `json:"database"`           // 数据库名
+}
diff --git a/server/internal/model/sub_table_info.go b/server/internal/model/sub_table_info.go
new file mode 100644
index 0000000..c4eb1c7
--- /dev/null
+++ b/server/internal/model/sub_table_info.go
@@ -0,0 +1,117 @@
+package model
+
+import (
+	"encoding/json"
+	"time"
+)
+
+// TableDDLInfo 表结构信息
+type TableDDLInfo struct {
+	TableName    string         `json:"table_name"`     // 表名
+	TableComment string         `json:"table_comment"`  // 表注释
+	Columns      []ColumnInfo   `json:"columns"`        // 列信息
+	DDL          string         `json:"ddl"`            // 建表DDL
+	Indexes      []IndexInfo    `json:"indexes"`        // 索引信息
+}
+
+// ColumnInfo 列信息
+type ColumnInfo struct {
+	ColumnName    string `json:"column_name"`     // 列名
+	DataType      string `json:"data_type"`       // 数据类型
+	ColumnType    string `json:"column_type"`     // 列类型（含长度）
+	IsNullable    string `json:"is_nullable"`     // 是否可空
+	DefaultValue  string `json:"default_value"`   // 默认值
+	ColumnKey     string `json:"column_key"`      // 主键/索引
+	Extra         string `json:"extra"`           // 自增等
+	ColumnComment string `json:"column_comment"`  // 列注释
+	MappedName    string `json:"mapped_name"`     // 字段中文映射名
+}
+
+// IndexInfo 索引信息
+type IndexInfo struct {
+	IndexName  string `json:"index_name"`  // 索引名
+	ColumnName string `json:"column_name"`  // 列名
+	NonUnique  int    `json:"non_unique"`  // 是否唯一
+	IndexType  string `json:"index_type"`  // 索引类型
+}
+
+// SubTableInfo 子表信息
+type SubTableInfo struct {
+	ID              string          `json:"id"`                 // UUID
+	DatabaseID      string          `json:"database_id"`        // 关联的数据库ID
+	ParentTable    string          `json:"parent_table"`        // 父表名
+	SubTableName    string          `json:"sub_table_name"`     // 子表名
+	SubTableComment string          `json:"sub_table_comment"`  // 子表注释
+	MappingType     string          `json:"mapping_type" gorm:"type:varchar(20)"`       // 映射类型
+	RelationField   string          `json:"relation_field" gorm:"type:varchar(100)"`     // 关联字段
+	RelationType    string          `json:"relation_type" gorm:"type:varchar(20)"`       // 关联类型
+	Fields         string          `json:"-" gorm:"type:longtext"`                      // 字段映射列表（JSON 格式，内部存储）
+	FieldsList     []FieldMapping  `json:"fields" gorm:"-"`           // 字段映射列表（返回给前端）
+	DDL            string          `json:"ddl" gorm:"type:longtext"`                   // 建表 DDL
+	CreatedAt      time.Time       `json:"created_at"`
+	UpdatedAt      time.Time       `json:"updated_at"`
+}
+
+// FieldMapping 字段映射
+type FieldMapping struct {
+	ColumnName string `json:"column_name"` // 列名
+	MappedName string `json:"mapped_name"` // 中文映射名
+}
+
+// GetFields 获取字段映射列表
+func (s *SubTableInfo) GetFields() []FieldMapping {
+	if s.Fields == "" {
+		return nil
+	}
+	var fields []FieldMapping
+	if err := json.Unmarshal([]byte(s.Fields), &fields); err != nil {
+		return nil
+	}
+	return fields
+}
+
+// SetFields 设置字段映射列表
+func (s *SubTableInfo) SetFields(fields []FieldMapping) {
+	if len(fields) == 0 {
+		s.Fields = ""
+		return
+	}
+	data, _ := json.Marshal(fields)
+	s.Fields = string(data)
+}
+
+// TableName 表名
+func (SubTableInfo) TableName() string {
+	return "sub_table_info"
+}
+
+// CreateSubTableRequest 创建子表请求
+type CreateSubTableRequest struct {
+	DatabaseID      string          `json:"database_id" binding:"required"`
+	ParentTable    string          `json:"parent_table" binding:"required"`
+	SubTableName    string          `json:"sub_table_name" binding:"required"`
+	SubTableComment string          `json:"sub_table_comment"`
+	MappingType     string          `json:"mapping_type"`
+	RelationField   string          `json:"relation_field"`
+	RelationType    string          `json:"relation_type"`
+	Fields          []FieldMapping  `json:"fields"` // 字段映射列表
+}
+
+// UpdateSubTableRequest 更新子表请求
+type UpdateSubTableRequest struct {
+	ParentTable    string `json:"parent_table"`
+	SubTableName    string `json:"sub_table_name"`
+	SubTableComment string `json:"sub_table_comment"`
+	MappingType     string `json:"mapping_type"`
+	RelationField   string `json:"relation_field"`
+	RelationType    string `json:"relation_type"`
+}
+
+// SubTableMapping 完整的子表映射配置（存储到文件的格式）
+type SubTableMapping struct {
+	DatabaseID  string         `json:"database_id"`
+	DatabaseName string        `json:"database_name"`
+	DBType      string         `json:"db_type"`
+	Tables      []SubTableInfo `json:"tables"`
+	UpdatedAt   time.Time      `json:"updated_at"`
+}
diff --git a/server/internal/model/system_info.go b/server/internal/model/system_info.go
new file mode 100644
index 0000000..365c314
--- /dev/null
+++ b/server/internal/model/system_info.go
@@ -0,0 +1,25 @@
+package model
+
+// SystemInfo 系统信息
+type SystemInfo struct {
+	CPU    CPUInfo    `json:"cpu"`
+	Memory MemoryInfo `json:"memory"`
+}
+
+// CPUInfo CPU信息
+type CPUInfo struct {
+	Percent       float64   `json:"percent"`        // CPU使用率
+	CoreCount     int       `json:"core_count"`    // 核心数
+	ModelName     string    `json:"model_name"`    // CPU型号
+}
+
+// MemoryInfo 内存信息
+type MemoryInfo struct {
+	Total       uint64  `json:"total"`        // 总内存(字节)
+	Used        uint64  `json:"used"`          // 已使用(字节)
+	Available   uint64  `json:"available"`     // 可用(字节)
+	Percent     float64 `json:"percent"`      // 使用率
+	TotalGB     float64 `json:"total_gb"`     // 总内存(GB)
+	UsedGB      float64 `json:"used_gb"`       // 已使用(GB)
+	AvailableGB float64 `json:"available_gb"`  // 可用(GB)
+}
diff --git a/server/internal/model/user.go b/server/internal/model/user.go
new file mode 100644
index 0000000..4d37dc5
--- /dev/null
+++ b/server/internal/model/user.go
@@ -0,0 +1,50 @@
+package model
+
+import (
+	"time"
+)
+
+// PermissionLevel 权限级别
+type PermissionLevel int
+
+const (
+	PermissionRead PermissionLevel = iota + 1
+	PermissionWrite
+	PermissionExecute
+	PermissionAdmin
+)
+
+// Role 角色
+type Role struct {
+	ID          string           `json:"id" gorm:"primaryKey"`
+	Name        string           `json:"name" gorm:"uniqueIndex"`
+	Permissions []PermissionLevel `json:"permissions" gorm:"type:int[]"`
+	CreatedAt   time.Time        `json:"created_at"`
+	UpdatedAt   time.Time        `json:"updated_at"`
+}
+
+// User 用户
+type User struct {
+	ID        string    `json:"id" gorm:"primaryKey"`
+	Username  string    `json:"username" gorm:"uniqueIndex;size:50;not null"`
+	Password  string    `json:"-" gorm:"not null"`
+	Email     string    `json:"email" gorm:"index"`
+	RoleID    string    `json:"role_id" gorm:"size:50;not null"`
+	Role      *Role    `json:"role,omitempty" gorm:"foreignKey:RoleID"`
+	IsActive  bool      `json:"is_active" gorm:"default:true"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+// HasPermission 检查是否有权限
+func (u *User) HasPermission(level PermissionLevel) bool {
+	if u.Role == nil {
+		return false
+	}
+	for _, p := range u.Role.Permissions {
+		if p >= level {
+			return true
+		}
+	}
+	return false
+}
diff --git a/server/internal/repository/agent_repo.go b/server/internal/repository/agent_repo.go
new file mode 100644
index 0000000..3d99745
--- /dev/null
+++ b/server/internal/repository/agent_repo.go
@@ -0,0 +1,48 @@
+package repository
+
+import (
+	"x-agents/server/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type AgentRepository struct {
+	db *gorm.DB
+}
+
+func NewAgentRepository(db *gorm.DB) *AgentRepository {
+	return &AgentRepository{db: db}
+}
+
+func (r *AgentRepository) Create(agent *model.Agent) error {
+	return r.db.Create(agent).Error
+}
+
+func (r *AgentRepository) FindByID(id string) (*model.Agent, error) {
+	var agent model.Agent
+	err := r.db.First(&agent, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &agent, nil
+}
+
+func (r *AgentRepository) FindByOwnerID(ownerID string) ([]model.Agent, error) {
+	var agents []model.Agent
+	err := r.db.Where("owner_id = ?", ownerID).Find(&agents).Error
+	return agents, err
+}
+
+func (r *AgentRepository) FindAll() ([]model.Agent, error) {
+	var agents []model.Agent
+	err := r.db.Where("is_active = ?", true).Find(&agents).Error
+	return agents, err
+}
+
+func (r *AgentRepository) Update(agent *model.Agent) error {
+	return r.db.Save(agent).Error
+}
+
+func (r *AgentRepository) Delete(id string) error {
+	return r.db.Delete(&model.Agent{}, "id = ?", id).Error
+}
diff --git a/server/internal/repository/audit_repo.go b/server/internal/repository/audit_repo.go
new file mode 100644
index 0000000..791d6bc
--- /dev/null
+++ b/server/internal/repository/audit_repo.go
@@ -0,0 +1,56 @@
+package repository
+
+import (
+	"x-agents/server/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type AuditRepository struct {
+	db *gorm.DB
+}
+
+func NewAuditRepository(db *gorm.DB) *AuditRepository {
+	return &AuditRepository{db: db}
+}
+
+func (r *AuditRepository) Create(log *model.AuditLog) error {
+	return r.db.Create(log).Error
+}
+
+func (r *AuditRepository) FindByUserID(userID string, limit int) ([]model.AuditLog, error) {
+	var logs []model.AuditLog
+	err := r.db.Where("user_id = ?", userID).Order("created_at DESC").Limit(limit).Find(&logs).Error
+	return logs, err
+}
+
+func (r *AuditRepository) FindByAgentID(agentID string, limit int) ([]model.AuditLog, error) {
+	var logs []model.AuditLog
+	err := r.db.Where("agent_id = ?", agentID).Order("created_at DESC").Limit(limit).Find(&logs).Error
+	return logs, err
+}
+
+// ToolApproval 工具审批仓储
+
+func (r *AuditRepository) CreateApproval(req *model.ToolApprovalRequest) error {
+	return r.db.Create(req).Error
+}
+
+func (r *AuditRepository) FindApprovalByID(id string) (*model.ToolApprovalRequest, error) {
+	var req model.ToolApprovalRequest
+	err := r.db.First(&req, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &req, nil
+}
+
+func (r *AuditRepository) FindPendingApprovals() ([]model.ToolApprovalRequest, error) {
+	var reqs []model.ToolApprovalRequest
+	err := r.db.Where("status = ?", model.ApprovalStatusPending).Order("created_at ASC").Find(&reqs).Error
+	return reqs, err
+}
+
+func (r *AuditRepository) UpdateApproval(req *model.ToolApprovalRequest) error {
+	return r.db.Save(req).Error
+}
diff --git a/server/internal/repository/database_repo.go b/server/internal/repository/database_repo.go
new file mode 100644
index 0000000..552b305
--- /dev/null
+++ b/server/internal/repository/database_repo.go
@@ -0,0 +1,47 @@
+package repository
+
+import (
+	"x-agents/server/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type DatabaseRepository struct {
+	db *gorm.DB
+}
+
+func NewDatabaseRepository(db *gorm.DB) *DatabaseRepository {
+	return &DatabaseRepository{db: db}
+}
+
+// Create 创建数据库信息
+func (r *DatabaseRepository) Create(info *model.DatabaseInfo) error {
+	return r.db.Create(info).Error
+}
+
+// FindByID 根据ID查询
+func (r *DatabaseRepository) FindByID(id string) (*model.DatabaseInfo, error) {
+	var info model.DatabaseInfo
+	err := r.db.First(&info, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &info, nil
+}
+
+// FindAll 查询所有
+func (r *DatabaseRepository) FindAll() ([]model.DatabaseInfo, error) {
+	var list []model.DatabaseInfo
+	err := r.db.Order("created_at DESC").Find(&list).Error
+	return list, err
+}
+
+// Update 更新
+func (r *DatabaseRepository) Update(id string, info *model.DatabaseInfo) error {
+	return r.db.Model(&model.DatabaseInfo{}).Where("id = ?", id).Updates(info).Error
+}
+
+// Delete 删除
+func (r *DatabaseRepository) Delete(id string) error {
+	return r.db.Delete(&model.DatabaseInfo{}, "id = ?", id).Error
+}
diff --git a/server/internal/repository/sub_table_repo.go b/server/internal/repository/sub_table_repo.go
new file mode 100644
index 0000000..c033bd0
--- /dev/null
+++ b/server/internal/repository/sub_table_repo.go
@@ -0,0 +1,53 @@
+package repository
+
+import (
+	"x-agents/server/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type SubTableRepository struct {
+	db *gorm.DB
+}
+
+func NewSubTableRepository(db *gorm.DB) *SubTableRepository {
+	return &SubTableRepository{db: db}
+}
+
+// Create 创建子表信息
+func (r *SubTableRepository) Create(info *model.SubTableInfo) error {
+	return r.db.Create(info).Error
+}
+
+// FindByID 根据ID查询
+func (r *SubTableRepository) FindByID(id string) (*model.SubTableInfo, error) {
+	var info model.SubTableInfo
+	if err := r.db.Where("id = ?", id).First(&info).Error; err != nil {
+		return nil, err
+	}
+	return &info, nil
+}
+
+// FindByDatabaseID 根据数据库ID查询所有子表
+func (r *SubTableRepository) FindByDatabaseID(databaseID string) ([]model.SubTableInfo, error) {
+	var list []model.SubTableInfo
+	if err := r.db.Where("database_id = ?", databaseID).Find(&list).Error; err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+// Update 更新子表信息
+func (r *SubTableRepository) Update(id string, info *model.SubTableInfo) error {
+	return r.db.Model(info).Where("id = ?", id).Updates(info).Error
+}
+
+// Delete 删除子表信息
+func (r *SubTableRepository) Delete(id string) error {
+	return r.db.Where("id = ?", id).Delete(&model.SubTableInfo{}).Error
+}
+
+// DeleteByDatabaseID 删除数据库下所有子表信息
+func (r *SubTableRepository) DeleteByDatabaseID(databaseID string) error {
+	return r.db.Where("database_id = ?", databaseID).Delete(&model.SubTableInfo{}).Error
+}
diff --git a/server/internal/repository/user_repo.go b/server/internal/repository/user_repo.go
new file mode 100644
index 0000000..af48fc7
--- /dev/null
+++ b/server/internal/repository/user_repo.go
@@ -0,0 +1,66 @@
+package repository
+
+import (
+	"x-agents/server/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type UserRepository struct {
+	db *gorm.DB
+}
+
+func NewUserRepository(db *gorm.DB) *UserRepository {
+	return &UserRepository{db: db}
+}
+
+func (r *UserRepository) Create(user *model.User) error {
+	return r.db.Create(user).Error
+}
+
+func (r *UserRepository) FindByID(id string) (*model.User, error) {
+	var user model.User
+	err := r.db.Preload("Role").First(&user, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+func (r *UserRepository) FindByUsername(username string) (*model.User, error) {
+	var user model.User
+	err := r.db.Preload("Role").First(&user, "username = ?", username).Error
+	if err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+func (r *UserRepository) FindAll() ([]model.User, error) {
+	var users []model.User
+	err := r.db.Preload("Role").Find(&users).Error
+	return users, err
+}
+
+func (r *UserRepository) Update(user *model.User) error {
+	return r.db.Save(user).Error
+}
+
+func (r *UserRepository) Delete(id string) error {
+	return r.db.Delete(&model.User{}, "id = ?", id).Error
+}
+
+// FindRoleByID 根据ID查找角色
+func (r *UserRepository) FindRoleByID(id string) (*model.Role, error) {
+	var role model.Role
+	err := r.db.First(&role, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &role, nil
+}
+
+// CreateRole 创建角色
+func (r *UserRepository) CreateRole(role *model.Role) error {
+	return r.db.Create(role).Error
+}
diff --git a/server/internal/service/approval_service.go b/server/internal/service/approval_service.go
new file mode 100644
index 0000000..1db5469
--- /dev/null
+++ b/server/internal/service/approval_service.go
@@ -0,0 +1,101 @@
+package service
+
+import (
+	"fmt"
+	"time"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/repository"
+
+	"github.com/google/uuid"
+)
+
+type ApprovalService struct {
+	auditRepo *repository.AuditRepository
+}
+
+func NewApprovalService(auditRepo *repository.AuditRepository) *ApprovalService {
+	return &ApprovalService{auditRepo: auditRepo}
+}
+
+// CreateApprovalRequest 创建审批请求
+func (s *ApprovalService) CreateApprovalRequest(
+	toolName string,
+	params map[string]interface{},
+	userID string,
+	agentID string,
+	reason string,
+) (*model.ToolApprovalRequest, error) {
+
+	req := &model.ToolApprovalRequest{
+		ID:       uuid.New().String(),
+		ToolName: toolName,
+		Params:   params,
+		UserID:   userID,
+		AgentID:  agentID,
+		Reason:   reason,
+		Status:   model.ApprovalStatusPending,
+	}
+
+	if err := s.auditRepo.CreateApproval(req); err != nil {
+		return nil, err
+	}
+
+	return req, nil
+}
+
+// Approve 批准请求
+func (s *ApprovalService) Approve(requestID, reviewedBy string) (*model.ToolApprovalRequest, error) {
+	req, err := s.auditRepo.FindApprovalByID(requestID)
+	if err != nil {
+		return nil, fmt.Errorf("request not found: %w", err)
+	}
+
+	if req.Status != model.ApprovalStatusPending {
+		return nil, fmt.Errorf("request already processed")
+	}
+
+	now := time.Now()
+	req.Status = model.ApprovalStatusApproved
+	req.ReviewedBy = &reviewedBy
+	req.ReviewedAt = &now
+
+	if err := s.auditRepo.UpdateApproval(req); err != nil {
+		return nil, err
+	}
+
+	return req, nil
+}
+
+// Reject 拒绝请求
+func (s *ApprovalService) Reject(requestID, reviewedBy string) (*model.ToolApprovalRequest, error) {
+	req, err := s.auditRepo.FindApprovalByID(requestID)
+	if err != nil {
+		return nil, fmt.Errorf("request not found: %w", err)
+	}
+
+	if req.Status != model.ApprovalStatusPending {
+		return nil, fmt.Errorf("request already processed")
+	}
+
+	now := time.Now()
+	req.Status = model.ApprovalStatusRejected
+	req.ReviewedBy = &reviewedBy
+	req.ReviewedAt = &now
+
+	if err := s.auditRepo.UpdateApproval(req); err != nil {
+		return nil, err
+	}
+
+	return req, nil
+}
+
+// GetApproval 获取审批状态
+func (s *ApprovalService) GetApproval(requestID string) (*model.ToolApprovalRequest, error) {
+	return s.auditRepo.FindApprovalByID(requestID)
+}
+
+// GetPendingApprovals 获取待审批列表
+func (s *ApprovalService) GetPendingApprovals() ([]model.ToolApprovalRequest, error) {
+	return s.auditRepo.FindPendingApprovals()
+}
diff --git a/server/internal/service/auth_service.go b/server/internal/service/auth_service.go
new file mode 100644
index 0000000..e8d1655
--- /dev/null
+++ b/server/internal/service/auth_service.go
@@ -0,0 +1,145 @@
+package service
+
+import (
+	"errors"
+	"time"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/repository"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/google/uuid"
+	"golang.org/x/crypto/bcrypt"
+)
+
+var (
+	ErrInvalidCredentials = errors.New("invalid credentials")
+	ErrUserNotFound        = errors.New("user not found")
+)
+
+type AuthService struct {
+	jwtSecret string
+	userRepo  *repository.UserRepository
+}
+
+func NewAuthService(jwtSecret string, userRepo *repository.UserRepository) *AuthService {
+	return &AuthService{
+		jwtSecret: jwtSecret,
+		userRepo:  userRepo,
+	}
+}
+
+type LoginRequest struct {
+	Username string `json:"username" binding:"required"`
+	Password string `json:"password" binding:"required"`
+}
+
+type LoginResponse struct {
+	Token string      `json:"token"`
+	User  *model.User `json:"user"`
+}
+
+func (s *AuthService) Login(req LoginRequest) (*LoginResponse, error) {
+	// 查找用户
+	user, err := s.userRepo.FindByUsername(req.Username)
+	if err != nil {
+		return nil, ErrInvalidCredentials
+	}
+
+	// 验证密码
+	if err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(req.Password)); err != nil {
+		return nil, ErrInvalidCredentials
+	}
+
+	// 生成Token
+	token, err := s.generateToken(user)
+	if err != nil {
+		return nil, err
+	}
+
+	return &LoginResponse{
+		Token: token,
+		User:  user,
+	}, nil
+}
+
+func (s *AuthService) generateToken(user *model.User) (string, error) {
+	claims := jwt.MapClaims{
+		"sub":       user.ID,
+		"username":  user.Username,
+		"role":      user.RoleID,
+		"exp":       time.Now().Add(time.Hour * 24 * 7).Unix(), // 7天有效期
+		"iat":       time.Now().Unix(),
+		"expires_at": time.Now().Add(time.Hour * 24 * 7).Format(time.RFC3339),
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString([]byte(s.jwtSecret))
+}
+
+func (s *AuthService) ValidateToken(tokenString string) (jwt.MapClaims, error) {
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, errors.New("unexpected signing method")
+		}
+		return []byte(s.jwtSecret), nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
+		return claims, nil
+	}
+
+	return nil, errors.New("invalid token")
+}
+
+func (s *AuthService) Register(username, password, email string) (*model.User, error) {
+	// 检查用户是否已存在
+	_, err := s.userRepo.FindByUsername(username)
+	if err == nil {
+		return nil, errors.New("user already exists")
+	}
+
+	// 加密密码
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return nil, err
+	}
+
+	// 创建用户
+	user := &model.User{
+		ID:        uuid.New().String(),
+		Username:  username,
+		Password:  string(hashedPassword),
+		Email:     email,
+		RoleID:    "user",
+		IsActive:  true,
+	}
+
+	// 如果没有用户，创建默认管理员角色
+	role, err := s.userRepo.FindRoleByID(user.RoleID)
+	if err != nil {
+		// 创建默认角色
+		role = &model.Role{
+			ID:          "user",
+			Name:        "user",
+			Permissions: []model.PermissionLevel{model.PermissionRead, model.PermissionWrite},
+		}
+		s.userRepo.CreateRole(role)
+		user.Role = role
+	}
+
+	if err := s.userRepo.Create(user); err != nil {
+		return nil, err
+	}
+
+	return user, nil
+}
+
+// GetUserByID 根据ID获取用户
+func (s *AuthService) GetUserByID(id string) (*model.User, error) {
+	return s.userRepo.FindByID(id)
+}
diff --git a/server/internal/service/chat_service.go b/server/internal/service/chat_service.go
new file mode 100644
index 0000000..ca11f68
--- /dev/null
+++ b/server/internal/service/chat_service.go
@@ -0,0 +1,146 @@
+package service
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/repository"
+
+	"github.com/google/uuid"
+)
+
+type ChatService struct {
+	pythonURL  string
+	agentRepo *repository.AgentRepository
+}
+
+func NewChatService(pythonURL string, agentRepo *repository.AgentRepository) *ChatService {
+	return &ChatService{
+		pythonURL:  pythonURL,
+		agentRepo: agentRepo,
+	}
+}
+
+type ChatRequest struct {
+	AgentID   string                 `json:"agent_id"`
+	Message   string                 `json:"message"`
+	SessionID string                 `json:"session_id"`
+	Context   map[string]interface{} `json:"context"`
+}
+
+type ChatResponse struct {
+	Reply     string                 `json:"reply"`
+	SessionID string                 `json:"session_id"`
+	ToolsUsed []string              `json:"tools_used"`
+	Metadata  map[string]interface{} `json:"metadata"`
+}
+
+// Chat 处理聊天请求
+func (s *ChatService) Chat(ctx context.Context, userID string, req model.AgentRequest) (*model.AgentResponse, error) {
+	// 1. 检查 Agent 是否存在
+	agent, err := s.agentRepo.FindByID(req.AgentID)
+	if err != nil {
+		return nil, fmt.Errorf("agent not found: %w", err)
+	}
+
+	// 2. 检查用户权限
+	if !agent.IsActive {
+		return nil, fmt.Errorf("agent is not active")
+	}
+
+	// 3. 生成会话ID
+	sessionID := req.SessionID
+	if sessionID == "" {
+		sessionID = uuid.New().String()
+	}
+
+	// 4. 调用 Python 服务
+	pythonReq := ChatRequest{
+		AgentID:   req.AgentID,
+		Message:   req.Message,
+		SessionID: sessionID,
+		Context:   req.Context,
+	}
+
+	pythonResp, err := s.callPythonChat(ctx, pythonReq)
+	if err != nil {
+		return nil, fmt.Errorf("failed to call python service: %w", err)
+	}
+
+	return &model.AgentResponse{
+		Reply:     pythonResp.Reply,
+		SessionID: pythonResp.SessionID,
+		ToolsUsed: pythonResp.ToolsUsed,
+		Metadata:  pythonResp.Metadata,
+	}, nil
+}
+
+func (s *ChatService) callPythonChat(ctx context.Context, req ChatRequest) (*ChatResponse, error) {
+	jsonData, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+
+	httpReq, err := http.NewRequestWithContext(
+		ctx,
+		"POST",
+		s.pythonURL+"/agent/chat",
+		bytes.NewBuffer(jsonData),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	httpReq.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{
+		Timeout: 120 * time.Second, // Agent 可能需要较长时间
+	}
+
+	resp, err := client.Do(httpReq)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("python service returned status: %d", resp.StatusCode)
+	}
+
+	var chatResp ChatResponse
+	if err := json.NewDecoder(resp.Body).Decode(&chatResp); err != nil {
+		return nil, err
+	}
+
+	return &chatResp, nil
+}
+
+// ListAgents 获取用户可用的 Agent 列表
+func (s *ChatService) ListAgents(userID string) ([]model.Agent, error) {
+	return s.agentRepo.FindByOwnerID(userID)
+}
+
+// CreateAgent 创建新的 Agent
+func (s *ChatService) CreateAgent(userID string, name, description string) (*model.Agent, error) {
+	agent := &model.Agent{
+		ID:           uuid.New().String(),
+		Name:         name,
+		Description:  description,
+		OwnerID:      userID,
+		SecurityLevel: model.SecurityLevelSafe,
+		IsActive:     true,
+		Timeout:      60,
+		MemoryLimit:  134217728, // 128MB
+	}
+
+	if err := s.agentRepo.Create(agent); err != nil {
+		return nil, err
+	}
+
+	return agent, nil
+}
diff --git a/server/internal/service/database_service.go b/server/internal/service/database_service.go
new file mode 100644
index 0000000..18ee629
--- /dev/null
+++ b/server/internal/service/database_service.go
@@ -0,0 +1,765 @@
+package service
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"time"
+
+	_ "github.com/go-sql-driver/mysql"
+	_ "github.com/lib/pq"
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/repository"
+
+	"github.com/google/uuid"
+)
+
+var (
+	ErrDatabaseNotFound   = errors.New("database not found")
+	ErrDatabaseUnreachable = errors.New("database cannot be connected")
+)
+
+type DatabaseService struct {
+	repo          *repository.DatabaseRepository
+	subTableRepo  *repository.SubTableRepository
+}
+
+func NewDatabaseService(repo *repository.DatabaseRepository, subTableRepo *repository.SubTableRepository) *DatabaseService {
+	return &DatabaseService{
+		repo:         repo,
+		subTableRepo: subTableRepo,
+	}
+}
+
+// TestConnection 测试数据库连通性
+func (s *DatabaseService) TestConnection(info *model.DatabaseInfo) error {
+	log.Printf("[数据库连接测试] 开始测试连接: 类型=%s, 主机=%s, 端口=%d, 数据库=%s, 用户=%s",
+		info.DBType, info.Host, info.Port, info.Database, info.Username)
+
+	// 统一转换为小写处理
+	dbType := strings.ToLower(info.DBType)
+
+	// 构建连接字符串
+	dsn := s.buildDSN(info)
+	log.Printf("[数据库连接测试] DSN构建完成: %s", dsn)
+
+	// 设置超时
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// 根据数据库类型连接
+	var db *sql.DB
+	var err error
+
+	switch dbType {
+	case "mysql":
+		db, err = sql.Open("mysql", dsn)
+	case "postgres", "postgresql":
+		db, err = sql.Open("postgres", dsn)
+	default:
+		errMsg := fmt.Sprintf("unsupported database type: %s", info.DBType)
+		log.Printf("[数据库连接测试] 错误: %s", errMsg)
+		return fmt.Errorf(errMsg)
+	}
+
+	if err != nil {
+		errMsg := fmt.Sprintf("failed to create connection: %v", err)
+		log.Printf("[数据库连接测试] 错误: %s", errMsg)
+		return fmt.Errorf(errMsg)
+	}
+	defer db.Close()
+
+	// 测试连接
+	if err := db.PingContext(ctx); err != nil {
+		errMsg := fmt.Sprintf("cannot connect to database: %v", err)
+		log.Printf("[数据库连接测试] 连接失败: %s", errMsg)
+		return fmt.Errorf(errMsg)
+	}
+
+	log.Printf("[数据库连接测试] 连接成功!")
+	return nil
+}
+
+// buildDSN 构建数据库连接字符串
+func (s *DatabaseService) buildDSN(info *model.DatabaseInfo) string {
+	dbType := strings.ToLower(info.DBType)
+	switch dbType {
+	case "mysql":
+		charset := info.Charset
+		if charset == "" {
+			charset = "utf8mb4"
+		}
+		// 如果没有指定数据库名，只测试连接
+		dbName := info.Database
+		if dbName == "" {
+			dbName = "mysql"
+		}
+		return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&timeout=5s&parseTime=True",
+			info.Username,
+			info.Password,
+			info.Host,
+			info.Port,
+			dbName,
+			charset,
+		)
+	case "postgres", "postgresql":
+		sslmode := "disable"
+		if info.SSLMode != "" {
+			sslmode = info.SSLMode
+		}
+		return fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=%s connect_timeout=5",
+			info.Host,
+			info.Port,
+			info.Username,
+			info.Password,
+			info.Database,
+			sslmode,
+		)
+	default:
+		return ""
+	}
+}
+
+// getConnection 获取数据库连接
+func (s *DatabaseService) getConnection(info *model.DatabaseInfo) (*sql.DB, error) {
+	dsn := s.buildDSN(info)
+	dbType := strings.ToLower(info.DBType)
+
+	var db *sql.DB
+	var err error
+
+	switch dbType {
+	case "mysql":
+		db, err = sql.Open("mysql", dsn)
+	case "postgres", "postgresql":
+		db, err = sql.Open("postgres", dsn)
+	default:
+		return nil, fmt.Errorf("unsupported database type: %s", dbType)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	if err := db.Ping(); err != nil {
+		return nil, err
+	}
+
+	return db, nil
+}
+
+// getTableDDL 获取表的 DDL
+func (s *DatabaseService) getTableDDL(db *sql.DB, dbType, tableName string) (string, error) {
+	switch dbType {
+	case "mysql":
+		query := fmt.Sprintf("SHOW CREATE TABLE `%s`", tableName)
+		row := db.QueryRow(query)
+		var tblName, createStmt string
+		if err := row.Scan(&tblName, &createStmt); err != nil {
+			return "", err
+		}
+		return createStmt, nil
+	case "postgres", "postgresql":
+		query := fmt.Sprintf("SELECT pg_get_create('%s')", tableName)
+		var ddl string
+		if err := db.QueryRow(query).Scan(&ddl); err != nil {
+			return "", err
+		}
+		return ddl, nil
+	default:
+		return "", fmt.Errorf("unsupported database type: %s", dbType)
+	}
+}
+
+// buildMappedDDL 根据字段映射生成带 COMMENT 的 DDL
+func (s *DatabaseService) buildMappedDDL(originalDDL string, fields []model.FieldMapping) string {
+	// 构建列名到映射名的映射
+	columnMap := make(map[string]string)
+	for _, f := range fields {
+		if f.MappedName != "" {
+			columnMap[f.ColumnName] = f.MappedName
+		}
+	}
+
+	if len(columnMap) == 0 {
+		return originalDDL
+	}
+
+	// 解析原始 DDL，为有映射的列添加 COMMENT
+	lines := strings.Split(originalDDL, "\n")
+	var resultLines []string
+
+	for _, line := range lines {
+		trimmed := strings.TrimSpace(line)
+
+		// 检查是否是列定义行（以 ` 开头，包含数据类型）
+		if strings.HasPrefix(trimmed, "`") {
+			// 提取列名
+			parts := strings.SplitN(trimmed, " ", 2)
+			if len(parts) >= 1 {
+				colName := strings.Trim(parts[0], "`")
+
+				// 检查是否有映射
+				if mappedName, ok := columnMap[colName]; ok {
+					// 去掉结尾的逗号（如果有）
+					trimmed = strings.TrimRight(trimmed, ",")
+					// 检查是否已经有 COMMENT
+					if strings.Contains(strings.ToUpper(trimmed), "COMMENT") {
+						// 替换已有的 COMMENT
+						trimmed = strings.TrimSuffix(trimmed, " COMMENT '...'")
+						trimmed = fmt.Sprintf("%s COMMENT '%s'", trimmed, mappedName)
+					} else {
+						// 在末尾添加 COMMENT
+						trimmed = fmt.Sprintf("%s COMMENT '%s'", trimmed, mappedName)
+					}
+					// 替换原始行为修改后的行
+					resultLines = append(resultLines, trimmed)
+					continue
+				}
+			}
+		}
+		resultLines = append(resultLines, line)
+	}
+
+	return strings.Join(resultLines, "\n")
+}
+
+// Check 检查数据库连接
+func (s *DatabaseService) Check(req model.CheckRequest) (*model.CheckResponse, error) {
+	log.Printf("[Check] 开始检查连接: 类型=%s, 主机=%s, 端口=%d, 数据库=%s, 用户=%s",
+		req.DBType, req.Host, req.Port, req.Database, req.Username)
+
+	info := &model.DatabaseInfo{
+		DBType:   req.DBType,
+		Host:     req.Host,
+		Port:     req.Port,
+		Username: req.Username,
+		Password: req.Password,
+		Database: req.Database,
+		Charset:  req.Charset,
+		SSLMode:  req.SSLMode,
+	}
+
+	if info.Charset == "" {
+		info.Charset = "utf8mb4"
+	}
+
+	// 构建连接
+	dsn := s.buildDSN(info)
+	dbType := strings.ToLower(info.DBType)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	var db *sql.DB
+	var err error
+
+	switch dbType {
+	case "mysql":
+		db, err = sql.Open("mysql", dsn)
+	case "postgres", "postgresql":
+		db, err = sql.Open("postgres", dsn)
+	default:
+		return &model.CheckResponse{
+			Success: false,
+			Message: fmt.Sprintf("unsupported database type: %s", req.DBType),
+		}, nil
+	}
+
+	if err != nil {
+		return &model.CheckResponse{
+			Success: false,
+			Message: fmt.Sprintf("failed to create connection: %v", err),
+		}, nil
+	}
+	defer db.Close()
+
+	// 测试连接
+	if err := db.PingContext(ctx); err != nil {
+		log.Printf("[Check] 连接失败: %v", err)
+		return &model.CheckResponse{
+			Success: false,
+			Message: fmt.Sprintf("cannot connect to database: %v", err),
+		}, nil
+	}
+
+	log.Printf("[Check] 连接成功，开始获取表列表...")
+
+	// 获取表列表
+	var tables []model.TableDDLInfo
+	switch dbType {
+	case "mysql":
+		tables, _ = s.getMySQLTables(db, req.Database)
+	case "postgres", "postgresql":
+		tables, _ = s.getPostgresTables(db, req.Database)
+	}
+
+	log.Printf("[Check] 获取到 %d 个表", len(tables))
+
+	// 如果传入了 database_id，获取已保存的字段映射和 DDL 并填充到表结构中
+	if req.DatabaseID != "" && s.subTableRepo != nil {
+		s.fillFieldMappings(req.DatabaseID, tables)
+		s.fillDDL(req.DatabaseID, tables)
+	}
+
+	return &model.CheckResponse{
+		Success:  true,
+		Message:  "connection successful",
+		Tables:   tables,
+		Database: req.Database,
+	}, nil
+}
+
+// getMySQLTables 获取MySQL表结构
+func (s *DatabaseService) getMySQLTables(db *sql.DB, dbName string) ([]model.TableDDLInfo, error) {
+	rows, err := db.Query(`
+		SELECT TABLE_NAME, TABLE_COMMENT
+		FROM information_schema.TABLES
+		WHERE TABLE_SCHEMA = ?
+		AND TABLE_TYPE = 'BASE TABLE'
+	`, dbName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tables []model.TableDDLInfo
+	for rows.Next() {
+		var tableName, tableComment string
+		if err := rows.Scan(&tableName, &tableComment); err != nil {
+			continue
+		}
+
+		table := model.TableDDLInfo{
+			TableName:    tableName,
+			TableComment: tableComment,
+		}
+
+		// 获取列信息
+		table.Columns, _ = s.getMySQLColumns(db, dbName, tableName)
+
+		// 获取 DDL
+		table.DDL, _ = s.getMySQLDDL(db, tableName)
+
+		tables = append(tables, table)
+	}
+
+	return tables, nil
+}
+
+// getMySQLDDL 获取 MySQL 表的 DDL
+func (s *DatabaseService) getMySQLDDL(db *sql.DB, tableName string) (string, error) {
+	// 使用反引号包裹表名，防止关键字冲突
+	query := fmt.Sprintf("SHOW CREATE TABLE `%s`", tableName)
+	row := db.QueryRow(query)
+	var tblName, createStmt string
+	if err := row.Scan(&tblName, &createStmt); err != nil {
+		log.Printf("[getMySQLDDL] 获取 DDL 失败: %v", err)
+		return "", nil
+	}
+	return createStmt, nil
+}
+
+// getMySQLColumns 获取MySQL列信息
+func (s *DatabaseService) getMySQLColumns(db *sql.DB, dbName, tableName string) ([]model.ColumnInfo, error) {
+	rows, err := db.Query(`
+		SELECT
+			COLUMN_NAME, DATA_TYPE, COLUMN_TYPE,
+			IS_NULLABLE, COLUMN_DEFAULT, COLUMN_KEY,
+			EXTRA, COLUMN_COMMENT
+		FROM information_schema.COLUMNS
+		WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
+		ORDER BY ORDINAL_POSITION
+	`, dbName, tableName)
+	if err != nil {
+		log.Printf("[getMySQLColumns] 查询列信息失败: %v", err)
+		return nil, err
+	}
+	defer rows.Close()
+
+	columns := make([]model.ColumnInfo, 0)
+	for rows.Next() {
+		var col model.ColumnInfo
+		var defaultValue, extra, columnComment sql.NullString
+		if err := rows.Scan(&col.ColumnName, &col.DataType, &col.ColumnType,
+			&col.IsNullable, &defaultValue, &col.ColumnKey, &extra, &columnComment); err != nil {
+			log.Printf("[getMySQLColumns] Scan 失败: %v", err)
+			continue
+		}
+		col.DefaultValue = defaultValue.String
+		col.Extra = extra.String
+		col.ColumnComment = columnComment.String
+		columns = append(columns, col)
+	}
+
+	// 检查是否有迭代错误
+	if err := rows.Err(); err != nil {
+		log.Printf("[getMySQLColumns] 迭代错误: %v", err)
+	}
+
+	return columns, nil
+}
+
+// getPostgresTables 获取PostgreSQL表结构
+func (s *DatabaseService) getPostgresTables(db *sql.DB, dbName string) ([]model.TableDDLInfo, error) {
+	rows, err := db.Query(`
+		SELECT t.table_name, obj_description((t.table_schema || '.' || t.table_name)::regclass)
+		FROM information_schema.tables t
+		WHERE t.table_schema = 'public' AND t.table_type = 'BASE TABLE'
+	`, dbName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tables []model.TableDDLInfo
+	for rows.Next() {
+		var tableName, tableComment string
+		if err := rows.Scan(&tableName, &tableComment); err != nil {
+			continue
+		}
+
+		table := model.TableDDLInfo{
+			TableName:    tableName,
+			TableComment: tableComment,
+		}
+
+		// 获取列信息
+		table.Columns, _ = s.getPostgresColumns(db, tableName)
+
+		// 获取 DDL
+		table.DDL, _ = s.getPostgresDDL(db, tableName)
+
+		tables = append(tables, table)
+	}
+
+	return tables, nil
+}
+
+// getPostgresDDL 获取 PostgreSQL 表的 DDL
+func (s *DatabaseService) getPostgresDDL(db *sql.DB, tableName string) (string, error) {
+	var ddl string
+	query := fmt.Sprintf("SELECT pg_get_create('%s')", tableName)
+	row := db.QueryRow(query)
+	if err := row.Scan(&ddl); err != nil {
+		log.Printf("[getPostgresDDL] 获取 DDL 失败: %v", err)
+		return "", nil
+	}
+	return ddl, nil
+}
+
+// getPostgresColumns 获取PostgreSQL列信息
+func (s *DatabaseService) getPostgresColumns(db *sql.DB, tableName string) ([]model.ColumnInfo, error) {
+	rows, err := db.Query(`
+		SELECT
+			c.column_name, c.data_type, c.udt_name,
+			c.is_nullable, c.column_default, c.column_name,
+			'', c.column_comment
+		FROM information_schema.columns c
+		WHERE c.table_name = $1 AND c.table_schema = 'public'
+		ORDER BY c.ordinal_position
+	`, tableName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var columns []model.ColumnInfo
+	for rows.Next() {
+		var col model.ColumnInfo
+		if err := rows.Scan(&col.ColumnName, &col.DataType, &col.ColumnType,
+			&col.IsNullable, &col.DefaultValue, &col.ColumnKey, &col.Extra, &col.ColumnComment); err != nil {
+			continue
+		}
+		columns = append(columns, col)
+	}
+
+	return columns, nil
+}
+
+// Create 创建数据库信息（支持同时保存子表配置）
+func (s *DatabaseService) Create(req model.CreateDatabaseRequest) (*model.DatabaseInfo, error) {
+	log.Printf("[Create] 收到创建请求: %+v", req)
+
+	info := &model.DatabaseInfo{
+		ID:          uuid.New().String(),
+		Name:        req.Name,
+		Description: req.Description,
+		DBType:      strings.ToLower(req.DBType), // 统一转为小写
+		Host:        req.Host,
+		Port:        req.Port,
+		Username:    req.Username,
+		Password:    req.Password,
+		Database:    req.Database,
+		Charset:     req.Charset,
+		SSLMode:     req.SSLMode,
+		TableCount:  len(req.SubTables),
+	}
+
+	// 默认值
+	if info.Charset == "" {
+		info.Charset = "utf8mb4"
+	}
+
+	// 测试数据库连通性
+	log.Printf("[Create] 开始测试数据库连接...")
+	if err := s.TestConnection(info); err != nil {
+		log.Printf("[Create] 数据库连接测试失败: %v", err)
+		return nil, fmt.Errorf("database connection failed: %v", err)
+	}
+	log.Printf("[Create] 数据库连接测试成功!")
+
+	// 保存数据库信息
+	if err := s.repo.Create(info); err != nil {
+		log.Printf("[Create] 保存数据库失败: %v", err)
+		return nil, err
+	}
+
+	// 保存子表配置（如有）
+	if len(req.SubTables) > 0 && s.subTableRepo != nil {
+		log.Printf("[Create] 保存 %d 个子表配置", len(req.SubTables))
+
+		// 获取数据库连接用于查询 DDL
+		db, err := s.getConnection(info)
+		if err != nil {
+			log.Printf("[Create] 获取数据库连接失败: %v", err)
+		} else {
+			defer db.Close()
+		}
+
+		for _, subReq := range req.SubTables {
+			subTable := &model.SubTableInfo{
+				ID:              uuid.New().String(),
+				DatabaseID:      info.ID,
+				ParentTable:     subReq.ParentTable,
+				SubTableName:    subReq.SubTableName,
+				SubTableComment: subReq.SubTableComment,
+				MappingType:     subReq.MappingType,
+				RelationField:   subReq.RelationField,
+				RelationType:    subReq.RelationType,
+			}
+			// 使用 SetFields 方法保存字段映射
+			subTable.SetFields(subReq.Fields)
+
+			// 获取并保存 DDL
+			if db != nil {
+				ddl, err := s.getTableDDL(db, strings.ToLower(info.DBType), subReq.ParentTable)
+				if err != nil {
+					log.Printf("[Create] 获取原始 DDL 失败: %v", err)
+				} else {
+					// 如果有字段映射，生成带 COMMENT 的新 DDL
+					if len(subReq.Fields) > 0 {
+						subTable.DDL = s.buildMappedDDL(ddl, subReq.Fields)
+						log.Printf("[Create] 生成映射后的 DDL，长度: %d", len(subTable.DDL))
+					} else {
+						subTable.DDL = ddl
+					}
+				}
+			}
+
+			if err := s.subTableRepo.Create(subTable); err != nil {
+				log.Printf("[Create] 保存子表失败: %v", err)
+			}
+		}
+
+		// 同步到文件
+		s.syncSubTablesToFile(info)
+	}
+
+	log.Printf("[Create] 创建成功, ID=%s", info.ID)
+	return info, nil
+}
+
+// syncSubTablesToFile 同步子表到文件
+func (s *DatabaseService) syncSubTablesToFile(info *model.DatabaseInfo) {
+	if s.subTableRepo == nil {
+		return
+	}
+
+	tables, err := s.subTableRepo.FindByDatabaseID(info.ID)
+	if err != nil {
+		log.Printf("[syncSubTablesToFile] 查询子表失败: %v", err)
+		return
+	}
+
+	mapping := &model.SubTableMapping{
+		DatabaseID:    info.ID,
+		DatabaseName: info.Name,
+		DBType:       info.DBType,
+		Tables:       tables,
+		UpdatedAt:    time.Now(),
+	}
+
+	resourceDir := "resources/db_info"
+	os.MkdirAll(resourceDir, 0755)
+
+	data, err := json.MarshalIndent(mapping, "", "  ")
+	if err != nil {
+		log.Printf("[syncSubTablesToFile] 序列化失败: %v", err)
+		return
+	}
+
+	filePath := fmt.Sprintf("%s/%s.json", resourceDir, info.ID)
+	if err := os.WriteFile(filePath, data, 0644); err != nil {
+		log.Printf("[syncSubTablesToFile] 写入文件失败: %v", err)
+	}
+
+	log.Printf("[syncSubTablesToFile] 同步成功: %s", filePath)
+}
+
+// GetByID 获取详情
+func (s *DatabaseService) GetByID(id string) (*model.DatabaseInfo, error) {
+	log.Printf("[GetByID] 查询 ID=%s", id)
+	info, err := s.repo.FindByID(id)
+	if err != nil {
+		log.Printf("[GetByID] 查询失败: %v", err)
+		return nil, ErrDatabaseNotFound
+	}
+	return info, nil
+}
+
+// List 获取列表
+func (s *DatabaseService) List() ([]model.DatabaseInfo, error) {
+	log.Printf("[List] 查询所有数据库列表")
+	return s.repo.FindAll()
+}
+
+// Update 更新
+func (s *DatabaseService) Update(id string, req model.UpdateDatabaseRequest) (*model.DatabaseInfo, error) {
+	log.Printf("[Update] 更新 ID=%s, 数据=%+v", id, req)
+	// 检查是否存在
+	_, err := s.repo.FindByID(id)
+	if err != nil {
+		log.Printf("[Update] 不存在: %v", err)
+		return nil, ErrDatabaseNotFound
+	}
+
+	// 构建更新数据
+	updates := map[string]interface{}{}
+	if req.Name != "" {
+		updates["name"] = req.Name
+	}
+	if req.Description != "" {
+		updates["description"] = req.Description
+	}
+	if req.DBType != "" {
+		updates["db_type"] = req.DBType
+	}
+	if req.Host != "" {
+		updates["host"] = req.Host
+	}
+	if req.Port > 0 {
+		updates["port"] = req.Port
+	}
+	if req.Username != "" {
+		updates["username"] = req.Username
+	}
+	if req.Password != "" {
+		updates["password"] = req.Password
+	}
+	if req.Database != "" {
+		updates["database"] = req.Database
+	}
+	if req.TableCount > 0 {
+		updates["table_count"] = req.TableCount
+	}
+	if req.Charset != "" {
+		updates["charset"] = req.Charset
+	}
+	if req.SSLMode != "" {
+		updates["ssl_mode"] = req.SSLMode
+	}
+
+	info := &model.DatabaseInfo{}
+	if err := s.repo.Update(id, info); err != nil {
+		log.Printf("[Update] 更新失败: %v", err)
+		return nil, err
+	}
+
+	return s.repo.FindByID(id)
+}
+
+// fillFieldMappings 填充字段映射到表结构中
+func (s *DatabaseService) fillFieldMappings(databaseID string, tables []model.TableDDLInfo) {
+	// 从数据库中获取该数据库下所有子表的字段映射
+	subTables, err := s.subTableRepo.FindByDatabaseID(databaseID)
+	if err != nil {
+		log.Printf("[fillFieldMappings] 查询子表失败: %v", err)
+		return
+	}
+
+	// 构建表名到字段映射的映射
+	tableFieldsMap := make(map[string][]model.FieldMapping)
+	for _, st := range subTables {
+		fields := st.GetFields()
+		if len(fields) > 0 {
+			tableFieldsMap[st.ParentTable] = fields
+		}
+	}
+
+	// 遍历返回的表结构，填充字段映射
+	for i := range tables {
+		tableName := tables[i].TableName
+		if fields, ok := tableFieldsMap[tableName]; ok {
+			// 构建列名到映射名的映射
+			columnMap := make(map[string]string)
+			for _, f := range fields {
+				columnMap[f.ColumnName] = f.MappedName
+			}
+
+			// 填充到每个列
+			for j := range tables[i].Columns {
+				colName := tables[i].Columns[j].ColumnName
+				if mappedName, ok := columnMap[colName]; ok {
+					tables[i].Columns[j].MappedName = mappedName
+				}
+			}
+		}
+	}
+
+	log.Printf("[fillFieldMappings] 已填充字段映射到 %d 个表", len(tables))
+}
+
+// fillDDL 填充已保存的 DDL 到表结构中
+func (s *DatabaseService) fillDDL(databaseID string, tables []model.TableDDLInfo) {
+	// 从数据库中获取该数据库下所有子表的 DDL
+	subTables, err := s.subTableRepo.FindByDatabaseID(databaseID)
+	if err != nil {
+		log.Printf("[fillDDL] 查询子表失败: %v", err)
+		return
+	}
+
+	// 构建表名到 DDL 的映射
+	tableDDLMap := make(map[string]string)
+	for _, st := range subTables {
+		if st.DDL != "" {
+			tableDDLMap[st.ParentTable] = st.DDL
+		}
+	}
+
+	// 遍历返回的表结构，填充 DDL
+	for i := range tables {
+		tableName := tables[i].TableName
+		if ddl, ok := tableDDLMap[tableName]; ok {
+			tables[i].DDL = ddl
+		}
+	}
+
+	log.Printf("[fillDDL] 已填充 DDL 到 %d 个表", len(tables))
+}
+
+// Delete 删除
+func (s *DatabaseService) Delete(id string) error {
+	log.Printf("[Delete] 删除 ID=%s", id)
+	_, err := s.repo.FindByID(id)
+	if err != nil {
+		log.Printf("[Delete] 不存在: %v", err)
+		return ErrDatabaseNotFound
+	}
+	return s.repo.Delete(id)
+}
diff --git a/server/internal/service/sub_table_service.go b/server/internal/service/sub_table_service.go
new file mode 100644
index 0000000..c791528
--- /dev/null
+++ b/server/internal/service/sub_table_service.go
@@ -0,0 +1,602 @@
+package service
+
+import (
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"x-agents/server/internal/model"
+	"x-agents/server/internal/repository"
+
+	_ "github.com/go-sql-driver/mysql"
+	_ "github.com/lib/pq"
+	"github.com/google/uuid"
+)
+
+type SubTableService struct {
+	repo        *repository.SubTableRepository
+	dbRepo      *repository.DatabaseRepository
+	resourceDir string
+}
+
+func NewSubTableService(repo *repository.SubTableRepository, dbRepo *repository.DatabaseRepository) *SubTableService {
+	return &SubTableService{
+		repo:        repo,
+		dbRepo:      dbRepo,
+		resourceDir: "resources/db_info",
+	}
+}
+
+// ensureDir 确保目录存在
+func (s *SubTableService) ensureDir() error {
+	return os.MkdirAll(s.resourceDir, 0755)
+}
+
+// getFilePath 获取文件路径
+func (s *SubTableService) getFilePath(databaseID string) string {
+	return filepath.Join(s.resourceDir, fmt.Sprintf("%s.json", databaseID))
+}
+
+// saveToFile 保存到文件
+func (s *SubTableService) saveToFile(databaseID string, mapping *model.SubTableMapping) error {
+	if err := s.ensureDir(); err != nil {
+		return err
+	}
+
+	data, err := json.MarshalIndent(mapping, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(s.getFilePath(databaseID), data, 0644)
+}
+
+// loadFromFile 从文件加载
+func (s *SubTableService) loadFromFile(databaseID string) (*model.SubTableMapping, error) {
+	filePath := s.getFilePath(databaseID)
+	data, err := os.ReadFile(filePath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil, nil
+		}
+		return nil, err
+	}
+
+	var mapping model.SubTableMapping
+	if err := json.Unmarshal(data, &mapping); err != nil {
+		return nil, err
+	}
+	return &mapping, nil
+}
+
+// syncToFile 同步到文件
+func (s *SubTableService) syncToFile(databaseID string) error {
+	// 获取数据库信息
+	dbInfo, err := s.dbRepo.FindByID(databaseID)
+	if err != nil {
+		return err
+	}
+
+	// 获取所有子表信息
+	tables, err := s.repo.FindByDatabaseID(databaseID)
+	if err != nil {
+		return err
+	}
+
+	mapping := &model.SubTableMapping{
+		DatabaseID:    databaseID,
+		DatabaseName: dbInfo.Name,
+		DBType:       dbInfo.DBType,
+		Tables:       tables,
+		UpdatedAt:    time.Now(),
+	}
+
+	return s.saveToFile(databaseID, mapping)
+}
+
+// Create 创建子表信息
+func (s *SubTableService) Create(req model.CreateSubTableRequest) (*model.SubTableInfo, error) {
+	log.Printf("[SubTable Create] 收到请求: %+v", req)
+
+	// 验证数据库是否存在
+	_, err := s.dbRepo.FindByID(req.DatabaseID)
+	if err != nil {
+		log.Printf("[SubTable Create] 数据库不存在: %v", err)
+		return nil, fmt.Errorf("database not found")
+	}
+
+	info := &model.SubTableInfo{
+		ID:              uuid.New().String(),
+		DatabaseID:      req.DatabaseID,
+		ParentTable:     req.ParentTable,
+		SubTableName:    req.SubTableName,
+		SubTableComment: req.SubTableComment,
+		MappingType:     req.MappingType,
+		RelationField:   req.RelationField,
+		RelationType:    req.RelationType,
+	}
+
+	if err := s.repo.Create(info); err != nil {
+		log.Printf("[SubTable Create] 创建失败: %v", err)
+		return nil, err
+	}
+
+	// 同步到文件
+	if err := s.syncToFile(req.DatabaseID); err != nil {
+		log.Printf("[SubTable Create] 同步文件失败: %v", err)
+	}
+
+	log.Printf("[SubTable Create] 创建成功, ID=%s", info.ID)
+	return info, nil
+}
+
+// GetByID 获取详情
+func (s *SubTableService) GetByID(id string) (*model.SubTableInfo, error) {
+	log.Printf("[SubTable GetByID] 查询 ID=%s", id)
+	info, err := s.repo.FindByID(id)
+	if err != nil {
+		log.Printf("[SubTable GetByID] 查询失败: %v", err)
+		return nil, fmt.Errorf("sub table not found")
+	}
+	return info, nil
+}
+
+// ListByDatabaseID 获取数据库下所有子表
+func (s *SubTableService) ListByDatabaseID(databaseID string) ([]model.SubTableInfo, error) {
+	log.Printf("[SubTable ListByDatabaseID] 查询数据库ID=%s", databaseID)
+	tables, err := s.repo.FindByDatabaseID(databaseID)
+	if err != nil {
+		return nil, err
+	}
+
+	// 填充 FieldsList 字段
+	for i := range tables {
+		tables[i].FieldsList = tables[i].GetFields()
+	}
+
+	return tables, nil
+}
+
+// GetMappingFromFile 从文件获取映射信息
+func (s *SubTableService) GetMappingFromFile(databaseID string) (*model.SubTableMapping, error) {
+	log.Printf("[SubTable GetMappingFromFile] 读取文件, databaseID=%s", databaseID)
+	return s.loadFromFile(databaseID)
+}
+
+// Update 更新
+func (s *SubTableService) Update(id string, req model.UpdateSubTableRequest) (*model.SubTableInfo, error) {
+	log.Printf("[SubTable Update] 更新 ID=%s, 数据=%+v", id, req)
+
+	info, err := s.repo.FindByID(id)
+	if err != nil {
+		log.Printf("[SubTable Update] 不存在: %v", err)
+		return nil, fmt.Errorf("sub table not found")
+	}
+
+	if req.ParentTable != "" {
+		info.ParentTable = req.ParentTable
+	}
+	if req.SubTableName != "" {
+		info.SubTableName = req.SubTableName
+	}
+	if req.SubTableComment != "" {
+		info.SubTableComment = req.SubTableComment
+	}
+	if req.MappingType != "" {
+		info.MappingType = req.MappingType
+	}
+	if req.RelationField != "" {
+		info.RelationField = req.RelationField
+	}
+	if req.RelationType != "" {
+		info.RelationType = req.RelationType
+	}
+
+	if err := s.repo.Update(id, info); err != nil {
+		log.Printf("[SubTable Update] 更新失败: %v", err)
+		return nil, err
+	}
+
+	// 同步到文件
+	if err := s.syncToFile(info.DatabaseID); err != nil {
+		log.Printf("[SubTable Update] 同步文件失败: %v", err)
+	}
+
+	return info, nil
+}
+
+// Delete 删除
+func (s *SubTableService) Delete(id string) error {
+	log.Printf("[SubTable Delete] 删除 ID=%s", id)
+
+	info, err := s.repo.FindByID(id)
+	if err != nil {
+		log.Printf("[SubTable Delete] 不存在: %v", err)
+		return fmt.Errorf("sub table not found")
+	}
+
+	databaseID := info.DatabaseID
+
+	if err := s.repo.Delete(id); err != nil {
+		log.Printf("[SubTable Delete] 删除失败: %v", err)
+		return err
+	}
+
+	// 同步到文件
+	if err := s.syncToFile(databaseID); err != nil {
+		log.Printf("[SubTable Delete] 同步文件失败: %v", err)
+	}
+
+	return nil
+}
+
+// GetTableDDLFromDatabase 从实际数据库获取表结构和DDL
+func (s *SubTableService) GetTableDDLFromDatabase(databaseID string) ([]model.TableDDLInfo, error) {
+	log.Printf("[GetTableDDLFromDatabase] 获取数据库ID=%s 的表结构", databaseID)
+
+	// 获取数据库连接信息
+	dbInfo, err := s.dbRepo.FindByID(databaseID)
+	if err != nil {
+		log.Printf("[GetTableDDLFromDatabase] 数据库不存在: %v", err)
+		return nil, fmt.Errorf("database not found")
+	}
+
+	// 构建连接
+	dsn := s.buildDSN(dbInfo)
+	dbType := strings.ToLower(dbInfo.DBType)
+
+	var db *sql.DB
+	switch dbType {
+	case "mysql":
+		db, err = sql.Open("mysql", dsn)
+	case "postgres", "postgresql":
+		db, err = sql.Open("postgres", dsn)
+	default:
+		return nil, fmt.Errorf("unsupported database type: %s", dbInfo.DBType)
+	}
+	if err != nil {
+		return nil, fmt.Errorf("failed to connect: %v", err)
+	}
+	defer db.Close()
+
+	// 获取所有表
+	var tables []model.TableDDLInfo
+	switch dbType {
+	case "mysql":
+		tables, err = s.getMySQLTables(db, dbInfo.Database)
+	case "postgres", "postgresql":
+		tables, err = s.getPostgresTables(db, dbInfo.Database)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	log.Printf("[GetTableDDLFromDatabase] 获取到 %d 个表", len(tables))
+	return tables, nil
+}
+
+// buildDSN 构建数据库连接字符串
+func (s *SubTableService) buildDSN(info *model.DatabaseInfo) string {
+	dbType := strings.ToLower(info.DBType)
+	switch dbType {
+	case "mysql":
+		charset := info.Charset
+		if charset == "" {
+			charset = "utf8mb4"
+		}
+		dbName := info.Database
+		if dbName == "" {
+			dbName = "mysql"
+		}
+		return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&timeout=5s&parseTime=True",
+			info.Username, info.Password, info.Host, info.Port, dbName, charset)
+	case "postgres", "postgresql":
+		sslmode := "disable"
+		if info.SSLMode != "" {
+			sslmode = info.SSLMode
+		}
+		return fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=%s connect_timeout=5",
+			info.Host, info.Port, info.Username, info.Password, info.Database, sslmode)
+	}
+	return ""
+}
+
+// getMySQLTables 获取MySQL表结构
+func (s *SubTableService) getMySQLTables(db *sql.DB, dbName string) ([]model.TableDDLInfo, error) {
+	// 获取所有表名和注释
+	rows, err := db.Query(`
+		SELECT TABLE_NAME, TABLE_COMMENT
+		FROM information_schema.TABLES
+		WHERE TABLE_SCHEMA = ?
+		AND TABLE_TYPE = 'BASE TABLE'
+	`, dbName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tables []model.TableDDLInfo
+	for rows.Next() {
+		var tableName, tableComment string
+		if err := rows.Scan(&tableName, &tableComment); err != nil {
+			continue
+		}
+
+		table := model.TableDDLInfo{
+			TableName:    tableName,
+			TableComment: tableComment,
+		}
+
+		// 获取列信息
+		table.Columns, _ = s.getMySQLColumns(db, dbName, tableName)
+
+		// 获取索引信息
+		table.Indexes, _ = s.getMySQLIndexes(db, dbName, tableName)
+
+		// 生成DDL
+		table.DDL = s.generateMySQLDDL(table)
+
+		tables = append(tables, table)
+	}
+
+	return tables, nil
+}
+
+// getMySQLColumns 获取MySQL列信息
+func (s *SubTableService) getMySQLColumns(db *sql.DB, dbName, tableName string) ([]model.ColumnInfo, error) {
+	rows, err := db.Query(`
+		SELECT
+			COLUMN_NAME, DATA_TYPE, COLUMN_TYPE,
+			IS_NULLABLE, COLUMN_DEFAULT, COLUMN_KEY,
+			EXTRA, COLUMN_COMMENT
+		FROM information_schema.COLUMNS
+		WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
+		ORDER BY ORDINAL_POSITION
+	`, dbName, tableName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var columns []model.ColumnInfo
+	for rows.Next() {
+		var col model.ColumnInfo
+		if err := rows.Scan(&col.ColumnName, &col.DataType, &col.ColumnType,
+			&col.IsNullable, &col.DefaultValue, &col.ColumnKey, &col.Extra, &col.ColumnComment); err != nil {
+			continue
+		}
+		columns = append(columns, col)
+	}
+
+	return columns, nil
+}
+
+// getMySQLIndexes 获取MySQL索引信息
+func (s *SubTableService) getMySQLIndexes(db *sql.DB, dbName, tableName string) ([]model.IndexInfo, error) {
+	rows, err := db.Query(`
+		SELECT INDEX_NAME, COLUMN_NAME, NON_UNIQUE, INDEX_TYPE
+		FROM information_schema.STATISTICS
+		WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
+		ORDER BY SEQ_IN_INDEX
+	`, dbName, tableName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var indexes []model.IndexInfo
+	for rows.Next() {
+		var idx model.IndexInfo
+		if err := rows.Scan(&idx.IndexName, &idx.ColumnName, &idx.NonUnique, &idx.IndexType); err != nil {
+			continue
+		}
+		indexes = append(indexes, idx)
+	}
+
+	return indexes, nil
+}
+
+// generateMySQLDDL 生成MySQL DDL
+func (s *SubTableService) generateMySQLDDL(table model.TableDDLInfo) string {
+	var sb strings.Builder
+	sb.WriteString(fmt.Sprintf("CREATE TABLE `%s` (\n", table.TableName))
+
+	for i, col := range table.Columns {
+		sb.WriteString(fmt.Sprintf("  `%s` %s", col.ColumnName, col.ColumnType))
+
+		if col.IsNullable == "NO" {
+			sb.WriteString(" NOT NULL")
+		}
+		if col.DefaultValue != "" {
+			sb.WriteString(fmt.Sprintf(" DEFAULT %s", col.DefaultValue))
+		}
+		if col.Extra == "auto_increment" {
+			sb.WriteString(" AUTO_INCREMENT")
+		}
+		if col.ColumnComment != "" {
+			sb.WriteString(fmt.Sprintf(" COMMENT '%s'", col.ColumnComment))
+		}
+
+		if i < len(table.Columns)-1 {
+			sb.WriteString(",")
+		}
+		sb.WriteString("\n")
+	}
+
+	// 添加主键
+	var primaryKeys []string
+	for _, idx := range table.Indexes {
+		if idx.IndexName == "PRIMARY" {
+			primaryKeys = append(primaryKeys, fmt.Sprintf("`%s`", idx.ColumnName))
+		}
+	}
+	if len(primaryKeys) > 0 {
+		sb.WriteString(fmt.Sprintf("  PRIMARY KEY (%s)\n", strings.Join(primaryKeys, ", ")))
+	}
+
+	// 添加索引
+	var addedIndexes []string
+	for _, idx := range table.Indexes {
+		if idx.IndexName != "PRIMARY" {
+			unique := ""
+			if idx.NonUnique == 0 {
+				unique = "UNIQUE "
+			}
+			if !contains(addedIndexes, idx.IndexName) {
+				sb.WriteString(fmt.Sprintf("  %sKEY `%s` (`%s`),\n", unique, idx.IndexName, idx.ColumnName))
+				addedIndexes = append(addedIndexes, idx.IndexName)
+			}
+		}
+	}
+
+	ddl := sb.String()
+	ddl = strings.TrimSuffix(ddl, ",\n")
+	ddl += "\n)"
+
+	if table.TableComment != "" {
+		ddl += fmt.Sprintf(" COMMENT='%s'", table.TableComment)
+	}
+	ddl += ";\n"
+
+	return ddl
+}
+
+// contains 检查切片是否包含元素
+func contains(slice []string, item string) bool {
+	for _, s := range slice {
+		if s == item {
+			return true
+		}
+	}
+	return false
+}
+
+// getPostgresTables 获取PostgreSQL表结构
+func (s *SubTableService) getPostgresTables(db *sql.DB, dbName string) ([]model.TableDDLInfo, error) {
+	rows, err := db.Query(`
+		SELECT t.table_name, obj_description((t.table_schema || '.' || t.table_name)::regclass)
+		FROM information_schema.tables t
+		WHERE t.table_schema = 'public' AND t.table_type = 'BASE TABLE'
+	`, dbName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tables []model.TableDDLInfo
+	for rows.Next() {
+		var tableName, tableComment string
+		if err := rows.Scan(&tableName, &tableComment); err != nil {
+			continue
+		}
+
+		table := model.TableDDLInfo{
+			TableName:    tableName,
+			TableComment: tableComment,
+		}
+
+		// 获取列信息
+		table.Columns, _ = s.getPostgresColumns(db, tableName)
+
+		// 获取索引信息
+		table.Indexes, _ = s.getPostgresIndexes(db, tableName)
+
+		// 生成DDL
+		table.DDL = s.generatePostgresDDL(table)
+
+		tables = append(tables, table)
+	}
+
+	return tables, nil
+}
+
+// getPostgresColumns 获取PostgreSQL列信息
+func (s *SubTableService) getPostgresColumns(db *sql.DB, tableName string) ([]model.ColumnInfo, error) {
+	rows, err := db.Query(`
+		SELECT
+			c.column_name, c.data_type, c.udt_name,
+			c.is_nullable, c.column_default, c.column_name,
+			'', c.column_comment
+		FROM information_schema.columns c
+		WHERE c.table_name = $1 AND c.table_schema = 'public'
+		ORDER BY c.ordinal_position
+	`, tableName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var columns []model.ColumnInfo
+	for rows.Next() {
+		var col model.ColumnInfo
+		if err := rows.Scan(&col.ColumnName, &col.DataType, &col.ColumnType,
+			&col.IsNullable, &col.DefaultValue, &col.ColumnKey, &col.Extra, &col.ColumnComment); err != nil {
+			continue
+		}
+		columns = append(columns, col)
+	}
+
+	return columns, nil
+}
+
+// getPostgresIndexes 获取PostgreSQL索引信息
+func (s *SubTableService) getPostgresIndexes(db *sql.DB, tableName string) ([]model.IndexInfo, error) {
+	rows, err := db.Query(`
+		SELECT indexname, indexdef
+		FROM pg_indexes
+		WHERE tablename = $1 AND schemaname = 'public'
+	`, tableName)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var indexes []model.IndexInfo
+	for rows.Next() {
+		var idx model.IndexInfo
+		var indexDef string
+		if err := rows.Scan(&idx.IndexName, &indexDef); err != nil {
+			continue
+		}
+		idx.NonUnique = 1
+		if strings.Contains(indexDef, "UNIQUE") {
+			idx.NonUnique = 0
+		}
+		indexes = append(indexes, idx)
+	}
+
+	return indexes, nil
+}
+
+// generatePostgresDDL 生成PostgreSQL DDL
+func (s *SubTableService) generatePostgresDDL(table model.TableDDLInfo) string {
+	var sb strings.Builder
+	sb.WriteString(fmt.Sprintf("CREATE TABLE %s (\n", table.TableName))
+
+	for i, col := range table.Columns {
+		sb.WriteString(fmt.Sprintf("  %s %s", col.ColumnName, col.ColumnType))
+
+		if col.IsNullable == "NO" {
+			sb.WriteString(" NOT NULL")
+		}
+		if col.DefaultValue != "" {
+			sb.WriteString(fmt.Sprintf(" DEFAULT %s", col.DefaultValue))
+		}
+
+		if i < len(table.Columns)-1 {
+			sb.WriteString(",")
+		}
+		sb.WriteString("\n")
+	}
+
+	ddl := sb.String()
+	ddl = strings.TrimSuffix(ddl, ",\n")
+	ddl += "\n);"
+
+	return ddl
+}
diff --git a/server/main.exe b/server/main.exe
new file mode 100644
index 0000000..94115af
Binary files /dev/null and b/server/main.exe differ
diff --git a/server/resources/db_info/053388bf-d0c3-4cd9-b78f-539858705a65.json b/server/resources/db_info/053388bf-d0c3-4cd9-b78f-539858705a65.json
new file mode 100644
index 0000000..8816488
--- /dev/null
+++ b/server/resources/db_info/053388bf-d0c3-4cd9-b78f-539858705a65.json
@@ -0,0 +1,7 @@
+{
+  "database_id": "053388bf-d0c3-4cd9-b78f-539858705a65",
+  "database_name": "test-db",
+  "db_type": "mysql",
+  "tables": [],
+  "updated_at": "2026-03-06T15:46:22.8598923+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/101fbee1-8400-46ae-b83b-e3898e4888b6.json b/server/resources/db_info/101fbee1-8400-46ae-b83b-e3898e4888b6.json
new file mode 100644
index 0000000..570515e
--- /dev/null
+++ b/server/resources/db_info/101fbee1-8400-46ae-b83b-e3898e4888b6.json
@@ -0,0 +1,22 @@
+{
+  "database_id": "101fbee1-8400-46ae-b83b-e3898e4888b6",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "042db4ca-512f-4ee9-aacb-2d7ff1bc2193",
+      "database_id": "101fbee1-8400-46ae-b83b-e3898e4888b6",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "fields": null,
+      "ddl": "CREATE TABLE `scores` (\n`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '分数id'\n  `student_id` int(10) unsigned NOT NULL,\n  `subject` varchar(50) NOT NULL COMMENT '科目',\n  `score` double DEFAULT NULL COMMENT '分数',\n  `teacher_id` int(10) unsigned DEFAULT NULL,\n  `exam_date` date DEFAULT NULL COMMENT '考试日期',\n  `created_at` datetime DEFAULT CURRENT_TIMESTAMP,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB AUTO_INCREMENT=48 DEFAULT CHARSET=utf8mb4",
+      "created_at": "2026-03-06T16:23:31.097+08:00",
+      "updated_at": "2026-03-06T16:23:31.097+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T16:23:31.1477776+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/456b6a60-c5a5-46e4-8f5e-9c07c4c08510.json b/server/resources/db_info/456b6a60-c5a5-46e4-8f5e-9c07c4c08510.json
new file mode 100644
index 0000000..883d481
--- /dev/null
+++ b/server/resources/db_info/456b6a60-c5a5-46e4-8f5e-9c07c4c08510.json
@@ -0,0 +1,20 @@
+{
+  "database_id": "456b6a60-c5a5-46e4-8f5e-9c07c4c08510",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "8b7f6a2f-3788-4499-8d3a-fe9140ccdfe1",
+      "database_id": "456b6a60-c5a5-46e4-8f5e-9c07c4c08510",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "created_at": "2026-03-06T15:12:45.607+08:00",
+      "updated_at": "2026-03-06T15:12:45.607+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T15:12:45.6597943+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/58f7171d-6906-4f85-b27a-20bb2f982fc4.json b/server/resources/db_info/58f7171d-6906-4f85-b27a-20bb2f982fc4.json
new file mode 100644
index 0000000..970dbed
--- /dev/null
+++ b/server/resources/db_info/58f7171d-6906-4f85-b27a-20bb2f982fc4.json
@@ -0,0 +1,22 @@
+{
+  "database_id": "58f7171d-6906-4f85-b27a-20bb2f982fc4",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "12298a11-fe00-4e6a-a37e-e4c0b5de6a51",
+      "database_id": "58f7171d-6906-4f85-b27a-20bb2f982fc4",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "fields": null,
+      "ddl": "CREATE TABLE `scores` (\n`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'fenshu id'\n  `student_id` int(10) unsigned NOT NULL,\n  `subject` varchar(50) NOT NULL COMMENT '科目',\n  `score` double DEFAULT NULL COMMENT '分数',\n  `teacher_id` int(10) unsigned DEFAULT NULL,\n  `exam_date` date DEFAULT NULL COMMENT '考试日期',\n  `created_at` datetime DEFAULT CURRENT_TIMESTAMP,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB AUTO_INCREMENT=48 DEFAULT CHARSET=utf8mb4",
+      "created_at": "2026-03-06T16:26:15.44+08:00",
+      "updated_at": "2026-03-06T16:26:15.44+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T16:26:15.4936638+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/5eee8840-c268-4cf1-8f86-a0d13eaf9b16.json b/server/resources/db_info/5eee8840-c268-4cf1-8f86-a0d13eaf9b16.json
new file mode 100644
index 0000000..bbb9b46
--- /dev/null
+++ b/server/resources/db_info/5eee8840-c268-4cf1-8f86-a0d13eaf9b16.json
@@ -0,0 +1,21 @@
+{
+  "database_id": "5eee8840-c268-4cf1-8f86-a0d13eaf9b16",
+  "database_name": "test-db-3",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "2a52c3a0-0019-4634-a4b3-3627a02153ba",
+      "database_id": "5eee8840-c268-4cf1-8f86-a0d13eaf9b16",
+      "parent_table": "database_info",
+      "sub_table_name": "DB��Ϣ",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "ddl": "CREATE TABLE `database_info` (\n`id` varchar(36) NOT NULL, COMMENT 'ID'\n`name` varchar(100) NOT NULL, COMMENT '����'\n  `description` varchar(500) DEFAULT NULL,\n  `db_type` varchar(20) NOT NULL,\n`host` varchar(255) NOT NULL, COMMENT '������ַ'\n  `port` bigint NOT NULL,\n  `username` varchar(100) NOT NULL,\n  `password` varchar(255) DEFAULT NULL,\n  `database` varchar(100) DEFAULT NULL,\n  `table_count` bigint DEFAULT '0',\n  `charset` varchar(20) DEFAULT 'utf8mb4',\n  `ssl_mode` varchar(20) DEFAULT NULL,\n  `created_at` datetime(3) DEFAULT NULL,\n  `updated_at` datetime(3) DEFAULT NULL,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci",
+      "created_at": "2026-03-06T15:57:24.011+08:00",
+      "updated_at": "2026-03-06T15:57:24.011+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T15:57:24.0628515+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/68b6fb60-eae2-495b-b248-9c46c8d8d6cb.json b/server/resources/db_info/68b6fb60-eae2-495b-b248-9c46c8d8d6cb.json
new file mode 100644
index 0000000..76830f7
--- /dev/null
+++ b/server/resources/db_info/68b6fb60-eae2-495b-b248-9c46c8d8d6cb.json
@@ -0,0 +1,21 @@
+{
+  "database_id": "68b6fb60-eae2-495b-b248-9c46c8d8d6cb",
+  "database_name": "test-db-4",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "5107d64f-9949-4550-9030-e7e14585f080",
+      "database_id": "68b6fb60-eae2-495b-b248-9c46c8d8d6cb",
+      "parent_table": "database_info",
+      "sub_table_name": "DB��",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "ddl": "CREATE TABLE `database_info` (\n`id` varchar(36) NOT NULL COMMENT '����ID'\n`name` varchar(100) NOT NULL COMMENT '���ݿ���'\n  `description` varchar(500) DEFAULT NULL,\n  `db_type` varchar(20) NOT NULL,\n`host` varchar(255) NOT NULL COMMENT '������'\n  `port` bigint NOT NULL,\n  `username` varchar(100) NOT NULL,\n  `password` varchar(255) DEFAULT NULL,\n  `database` varchar(100) DEFAULT NULL,\n  `table_count` bigint DEFAULT '0',\n  `charset` varchar(20) DEFAULT 'utf8mb4',\n  `ssl_mode` varchar(20) DEFAULT NULL,\n  `created_at` datetime(3) DEFAULT NULL,\n  `updated_at` datetime(3) DEFAULT NULL,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci",
+      "created_at": "2026-03-06T16:00:34.065+08:00",
+      "updated_at": "2026-03-06T16:00:34.065+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T16:00:34.1176551+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/7eb66808-db8b-428e-8548-2f754c4fc688.json b/server/resources/db_info/7eb66808-db8b-428e-8548-2f754c4fc688.json
new file mode 100644
index 0000000..2ca37df
--- /dev/null
+++ b/server/resources/db_info/7eb66808-db8b-428e-8548-2f754c4fc688.json
@@ -0,0 +1,44 @@
+{
+  "database_id": "7eb66808-db8b-428e-8548-2f754c4fc688",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "66026752-77b6-4cba-a4d1-1bf3b07e920c",
+      "database_id": "7eb66808-db8b-428e-8548-2f754c4fc688",
+      "parent_table": "teachers",
+      "sub_table_name": "teachers",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "created_at": "2026-03-06T15:12:24.217+08:00",
+      "updated_at": "2026-03-06T15:12:24.217+08:00"
+    },
+    {
+      "id": "be59cb63-c5cf-46bf-b77a-46ce1fcb374b",
+      "database_id": "7eb66808-db8b-428e-8548-2f754c4fc688",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "created_at": "2026-03-06T15:12:24.112+08:00",
+      "updated_at": "2026-03-06T15:12:24.112+08:00"
+    },
+    {
+      "id": "d91e5cd4-09c9-40a8-9c42-8f5ce0f059e1",
+      "database_id": "7eb66808-db8b-428e-8548-2f754c4fc688",
+      "parent_table": "students",
+      "sub_table_name": "students",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "created_at": "2026-03-06T15:12:24.166+08:00",
+      "updated_at": "2026-03-06T15:12:24.166+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T15:12:24.2696469+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/96d39e69-c96b-4d22-9b29-6456de71c6c1.json b/server/resources/db_info/96d39e69-c96b-4d22-9b29-6456de71c6c1.json
new file mode 100644
index 0000000..2abe2df
--- /dev/null
+++ b/server/resources/db_info/96d39e69-c96b-4d22-9b29-6456de71c6c1.json
@@ -0,0 +1,21 @@
+{
+  "database_id": "96d39e69-c96b-4d22-9b29-6456de71c6c1",
+  "database_name": "189数据库",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "d56ef61e-ac0d-439d-a2e8-133d766cbdd9",
+      "database_id": "96d39e69-c96b-4d22-9b29-6456de71c6c1",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "ddl": "CREATE TABLE `scores` (\n`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '分数id'\n  `student_id` int(10) unsigned NOT NULL,\n  `subject` varchar(50) NOT NULL COMMENT '科目',\n  `score` double DEFAULT NULL COMMENT '分数',\n  `teacher_id` int(10) unsigned DEFAULT NULL,\n  `exam_date` date DEFAULT NULL COMMENT '考试日期',\n  `created_at` datetime DEFAULT CURRENT_TIMESTAMP,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB AUTO_INCREMENT=48 DEFAULT CHARSET=utf8mb4",
+      "created_at": "2026-03-06T16:07:17.146+08:00",
+      "updated_at": "2026-03-06T16:07:17.146+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T16:07:17.1980788+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/a58e6c1e-b39b-4248-8de9-b172f134197b.json b/server/resources/db_info/a58e6c1e-b39b-4248-8de9-b172f134197b.json
new file mode 100644
index 0000000..77ac71f
--- /dev/null
+++ b/server/resources/db_info/a58e6c1e-b39b-4248-8de9-b172f134197b.json
@@ -0,0 +1,21 @@
+{
+  "database_id": "a58e6c1e-b39b-4248-8de9-b172f134197b",
+  "database_name": "test-db-2",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "613c5bb7-2d42-4b75-8f19-43a2b345de8b",
+      "database_id": "a58e6c1e-b39b-4248-8de9-b172f134197b",
+      "parent_table": "database_info",
+      "sub_table_name": "���ݿ���Ϣ��",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "ddl": "CREATE TABLE `database_info` (\n  `id` varchar(36) NOT NULL,\n  `name` varchar(100) NOT NULL,\n  `description` varchar(500) DEFAULT NULL,\n  `db_type` varchar(20) NOT NULL,\n  `host` varchar(255) NOT NULL,\n  `port` bigint NOT NULL,\n  `username` varchar(100) NOT NULL,\n  `password` varchar(255) DEFAULT NULL,\n  `database` varchar(100) DEFAULT NULL,\n  `table_count` bigint DEFAULT '0',\n  `charset` varchar(20) DEFAULT 'utf8mb4',\n  `ssl_mode` varchar(20) DEFAULT NULL,\n  `created_at` datetime(3) DEFAULT NULL,\n  `updated_at` datetime(3) DEFAULT NULL,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci",
+      "created_at": "2026-03-06T15:51:28.706+08:00",
+      "updated_at": "2026-03-06T15:51:28.706+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T15:51:28.762063+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/b5fc80da-b681-4f6f-a35a-73e73dee50d0.json b/server/resources/db_info/b5fc80da-b681-4f6f-a35a-73e73dee50d0.json
new file mode 100644
index 0000000..4b6d667
--- /dev/null
+++ b/server/resources/db_info/b5fc80da-b681-4f6f-a35a-73e73dee50d0.json
@@ -0,0 +1,20 @@
+{
+  "database_id": "b5fc80da-b681-4f6f-a35a-73e73dee50d0",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "49805b02-3204-44b9-9d28-3b5053ca7a1e",
+      "database_id": "b5fc80da-b681-4f6f-a35a-73e73dee50d0",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "created_at": "2026-03-06T15:12:36.292+08:00",
+      "updated_at": "2026-03-06T15:12:36.292+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T15:12:36.3469958+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/d022a68d-cb75-405b-bee3-e923a8b5a283.json b/server/resources/db_info/d022a68d-cb75-405b-bee3-e923a8b5a283.json
new file mode 100644
index 0000000..764535a
--- /dev/null
+++ b/server/resources/db_info/d022a68d-cb75-405b-bee3-e923a8b5a283.json
@@ -0,0 +1,7 @@
+{
+  "database_id": "d022a68d-cb75-405b-bee3-e923a8b5a283",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [],
+  "updated_at": "2026-03-06T15:32:13.1521688+08:00"
+}
\ No newline at end of file
diff --git a/server/resources/db_info/d44fa121-5964-439f-8c5d-0384ba27b411.json b/server/resources/db_info/d44fa121-5964-439f-8c5d-0384ba27b411.json
new file mode 100644
index 0000000..532c81d
--- /dev/null
+++ b/server/resources/db_info/d44fa121-5964-439f-8c5d-0384ba27b411.json
@@ -0,0 +1,22 @@
+{
+  "database_id": "d44fa121-5964-439f-8c5d-0384ba27b411",
+  "database_name": "123",
+  "db_type": "mysql",
+  "tables": [
+    {
+      "id": "694da06f-d6b7-4915-8502-c4c38addf059",
+      "database_id": "d44fa121-5964-439f-8c5d-0384ba27b411",
+      "parent_table": "scores",
+      "sub_table_name": "scores",
+      "sub_table_comment": "",
+      "mapping_type": "",
+      "relation_field": "",
+      "relation_type": "",
+      "fields": null,
+      "ddl": "CREATE TABLE `scores` (\n`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'fenshu id'\n  `student_id` int(10) unsigned NOT NULL,\n  `subject` varchar(50) NOT NULL COMMENT '科目',\n  `score` double DEFAULT NULL COMMENT '分数',\n  `teacher_id` int(10) unsigned DEFAULT NULL,\n  `exam_date` date DEFAULT NULL COMMENT '考试日期',\n  `created_at` datetime DEFAULT CURRENT_TIMESTAMP,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB AUTO_INCREMENT=48 DEFAULT CHARSET=utf8mb4",
+      "created_at": "2026-03-06T16:30:41.589+08:00",
+      "updated_at": "2026-03-06T16:30:41.589+08:00"
+    }
+  ],
+  "updated_at": "2026-03-06T16:30:41.639042+08:00"
+}
\ No newline at end of file
diff --git a/server/temp_add_data2.go b/server/temp_add_data2.go
new file mode 100644
index 0000000..5ad9c84
--- /dev/null
+++ b/server/temp_add_data2.go
@@ -0,0 +1,122 @@
+package main
+
+import (
+	"fmt"
+	"math/rand"
+	"time"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+type Teacher struct {
+	ID        uint   `gorm:"primaryKey"`
+	Name      string `gorm:"size:50;charset=utf8mb4"`
+	Subject   string `gorm:"size:50;charset=utf8mb4"`
+	Phone     string `gorm:"size:20"`
+	CreatedAt time.Time
+}
+
+type Student struct {
+	ID        uint   `gorm:"primaryKey"`
+	Name      string `gorm:"size:50;charset=utf8mb4"`
+	Age       int
+	Gender    string `gorm:"size:10;charset=utf8mb4"`
+	Class     string `gorm:"size:50;charset=utf8mb4"`
+	Phone     string `gorm:"size:20"`
+	CreatedAt time.Time
+}
+
+type Score struct {
+	ID         uint   `gorm:"primaryKey"`
+	StudentID  uint
+	Subject    string `gorm:"size:50;charset=utf8mb4"`
+	Score      float64
+	TeacherID  uint
+	ExamDate   time.Time
+	CreatedAt  time.Time
+}
+
+func main() {
+	dsn := "root:881116142@tcp(10.10.10.189:3306)/students?charset=utf8mb4&parseTime=True&loc=Local"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic("连接数据库失败: " + err.Error())
+	}
+
+	// 自动迁移表
+	db.AutoMigrate(&Teacher{}, &Student{}, &Score{})
+
+	// 清理旧数据
+	db.Exec("DELETE FROM scores")
+	db.Exec("DELETE FROM students")
+	db.Exec("DELETE FROM teachers")
+
+	rand.Seed(time.Now().UnixNano())
+
+	// 创建教师
+	teachers := []Teacher{
+		{Name: "张老师", Subject: "数学", Phone: "13800001001"},
+		{Name: "李老师", Subject: "语文", Phone: "13800001002"},
+		{Name: "王老师", Subject: "英语", Phone: "13800001003"},
+		{Name: "刘老师", Subject: "物理", Phone: "13800001004"},
+		{Name: "陈老师", Subject: "化学", Phone: "13800001005"},
+		{Name: "杨老师", Subject: "生物", Phone: "13800001006"},
+		{Name: "赵老师", Subject: "历史", Phone: "13800001007"},
+		{Name: "周老师", Subject: "地理", Phone: "13800001008"},
+	}
+	db.Create(&teachers)
+
+	// 创建30个学生
+	names := []string{"张三", "李四", "王五", "刘六", "陈七", "杨八", "赵九", "钱十",
+		"孙一", "周二", "吴三", "郑四", "冯五", "褚六", "卫七", "蒋八",
+		"沈九", "韩十", "朱十一", "秦十二", "许十三", "何十四", "吕十五", "施十六",
+		"张十七", "孔十八", "曹十九", "严二十", "华二十一", "金二十二"}
+	genders := []string{"男", "女"}
+	classes := []string{"高一(1)班", "高一(2)班", "高一(3)班", "高二(1)班", "高二(2)班"}
+
+	students := make([]Student, 30)
+	for i := 0; i < 30; i++ {
+		students[i] = Student{
+			Name:   names[i],
+			Age:    15 + rand.Intn(3),
+			Gender: genders[rand.Intn(len(genders))],
+			Class:  classes[rand.Intn(len(classes))],
+			Phone:  fmt.Sprintf("139%08d", 10000000+rand.Intn(90000000)),
+		}
+	}
+	db.Create(&students)
+
+	// 为每个学生创建成绩记录
+	subjects := []string{"数学", "语文", "英语", "物理", "化学", "生物", "历史", "地理"}
+	scores := make([]Score, 0)
+
+	for i := 0; i < 30; i++ {
+		numSubjects := 4 + rand.Intn(3)
+		selectedSubjects := make(map[string]bool)
+		for len(selectedSubjects) < numSubjects {
+			subj := subjects[rand.Intn(len(subjects))]
+			if !selectedSubjects[subj] {
+				selectedSubjects[subj] = true
+
+				teacherID := uint(1 + rand.Intn(len(teachers)))
+				examDate := time.Now().AddDate(0, -rand.Intn(6), -rand.Intn(30))
+
+				score := Score{
+					StudentID: students[i].ID,
+					Subject:   subj,
+					Score:     60 + rand.Float64()*40,
+					TeacherID: teacherID,
+					ExamDate:  examDate,
+				}
+				scores = append(scores, score)
+			}
+		}
+	}
+	db.Create(&scores)
+
+	fmt.Println("数据创建成功!")
+	fmt.Printf("教师: %d 条\n", len(teachers))
+	fmt.Printf("学生: %d 条\n", len(students))
+	fmt.Printf("成绩: %d 条\n", len(scores))
+}
diff --git a/server/temp_check.go b/server/temp_check.go
new file mode 100644
index 0000000..4df8904
--- /dev/null
+++ b/server/temp_check.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func main() {
+	dsn := "root:881116142@tcp(10.10.10.189:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic("连接失败: " + err.Error())
+	}
+
+	type User struct {
+		User string
+		Host string
+	}
+
+	var users []User
+	db.Raw("SELECT User, Host FROM mysql.user WHERE User='root'").Scan(&users)
+
+	println("Root 用户列表:")
+	for _, u := range users {
+		println("- User: " + u.User + ", Host: " + u.Host)
+	}
+}
diff --git a/server/temp_native.go b/server/temp_native.go
new file mode 100644
index 0000000..aec8853
--- /dev/null
+++ b/server/temp_native.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func main() {
+	dsn := "root:881116142@tcp(10.10.10.189:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic("连接失败: " + err.Error())
+	}
+
+	// 使用 mysql_native_password 插件重建用户
+	sqls := []string{
+		"DROP USER IF EXISTS 'root'@'%'",
+		"CREATE USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '881116142'",
+		"GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION",
+		"FLUSH PRIVILEGES",
+	}
+
+	for _, sql := range sqls {
+		if err := db.Exec(sql).Error; err != nil {
+			println("执行: " + sql + " - 错误: " + err.Error())
+		} else {
+			println("成功: " + sql)
+		}
+	}
+
+	println("完成! 用 mysql_native_password 插件重建了 root 用户")
+}
diff --git a/server/temp_newuser.go b/server/temp_newuser.go
new file mode 100644
index 0000000..2abfefa
--- /dev/null
+++ b/server/temp_newuser.go
@@ -0,0 +1,41 @@
+package main
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func main() {
+	// 尝试用 root 用户连接，但指定 IP
+	dsn := "root:881116142@tcp(127.0.0.1:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local&multiStatements=true"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		// 尝试其他方式
+		dsn2 := "root:881116142@tcp(localhost:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local&multiStatements=true"
+		db, err = gorm.Open(mysql.Open(dsn2), &gorm.Config{})
+		if err != nil {
+			println("无法连接，请通过其他方式在 MySQL 服务器上执行:")
+			println("CREATE USER IF NOT EXISTS 'root'@'%' IDENTIFIED BY '881116142';")
+			println("GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;")
+			println("FLUSH PRIVILEGES;")
+			panic("连接失败: " + err.Error())
+		}
+	}
+
+	// 创建新用户
+	sqls := []string{
+		"CREATE USER IF NOT EXISTS 'admin'@'%' IDENTIFIED BY 'admin123'",
+		"GRANT ALL PRIVILEGES ON *.* TO 'admin'@'%' WITH GRANT OPTION",
+		"FLUSH PRIVILEGES",
+	}
+
+	for _, sql := range sqls {
+		if err := db.Exec(sql).Error; err != nil {
+			println("执行: " + sql + " - 错误: " + err.Error())
+		} else {
+			println("执行成功: " + sql)
+		}
+	}
+
+	println("创建了新用户 admin，可以用这个连接 Navicat")
+}
diff --git a/server/temp_regrant.go b/server/temp_regrant.go
new file mode 100644
index 0000000..42c1abe
--- /dev/null
+++ b/server/temp_regrant.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func main() {
+	dsn := "root:881116142@tcp(10.10.10.189:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local&multiStatements=true"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic("连接失败: " + err.Error())
+	}
+
+	// 重建 root@% 用户并设置密码
+	sqls := []string{
+		"DROP USER IF EXISTS 'root'@'%'",
+		"CREATE USER 'root'@'%' IDENTIFIED BY '881116142'",
+		"GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION",
+		"FLUSH PRIVILEGES",
+	}
+
+	for _, sql := range sqls {
+		if err := db.Exec(sql).Error; err != nil {
+			println("执行: " + sql + " - 错误: " + err.Error())
+		} else {
+			println("执行成功: " + sql)
+		}
+	}
+
+	println("完成!")
+}
diff --git a/server/temp_reset.go b/server/temp_reset.go
new file mode 100644
index 0000000..2ab68fd
--- /dev/null
+++ b/server/temp_reset.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func main() {
+	dsn := "root:881116142@tcp(10.10.10.189:3306)/mysql?charset=utf8mb4&parseTime=True&loc=Local&allowOldStrings=true"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic("连接失败: " + err.Error())
+	}
+
+	// 删除所有 root 用户
+	sqls := []string{
+		"DROP USER IF EXISTS 'root'@'%'",
+		"DROP USER IF EXISTS 'root'@'10.10.10.122'",
+		"DROP USER IF EXISTS 'root'@'localhost'",
+		"DROP USER IF EXISTS 'root'@'127.0.0.1'",
+		"CREATE USER 'root'@'%' IDENTIFIED BY '881116142'",
+		"GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION",
+		"FLUSH PRIVILEGES",
+	}
+
+	for _, sql := range sqls {
+		if err := db.Exec(sql).Error; err != nil {
+			println("执行: " + sql + " - 错误: " + err.Error())
+		} else {
+			println("成功: " + sql)
+		}
+	}
+
+	println("完成!")
+}
diff --git a/start-local.ps1 b/start-local.ps1
new file mode 100644
index 0000000..2b7ed2d
--- /dev/null
+++ b/start-local.ps1
@@ -0,0 +1,41 @@
+# X-Agents 本地启动脚本（Go + 前端）
+# 运行方式: .\start-local.ps1
+
+$ErrorActionPreference = "Stop"
+
+Write-Host "======================================" -ForegroundColor Cyan
+Write-Host "  X-Agents 本地启动 (Go + 前端)" -ForegroundColor Cyan
+Write-Host "======================================" -ForegroundColor Cyan
+
+# 1. 启动数据库
+Write-Host "[启动] 数据库..." -ForegroundColor Green
+docker compose -f docker-compose.dev.yml up -d
+
+# 2. 启动 Go 服务
+Write-Host "[启动] Go API 服务..." -ForegroundColor Green
+Start-Process powershell -ArgumentList "-NoExit", "-Command", @"
+cd $PWD\server
+go run ./cmd/api
+"@ -WindowStyle Normal
+
+# 3. 启动前端
+Write-Host "[启动] 前端服务..." -ForegroundColor Green
+if (Test-Path "web/package.json") {
+    Start-Process powershell -ArgumentList "-NoExit", "-Command", @"
+cd $PWD\web
+npm run dev
+"@ -WindowStyle Normal
+}
+
+Write-Host ""
+Write-Host "======================================" -ForegroundColor Green
+Write-Host "  服务已启动！" -ForegroundColor Green
+Write-Host "======================================" -ForegroundColor Green
+Write-Host ""
+Write-Host "服务地址：" -ForegroundColor White
+Write-Host "  - Go API:  http://localhost:8080" -ForegroundColor Cyan
+Write-Host "  - 前端:    http://localhost:5173" -ForegroundColor Cyan
+Write-Host "  - MySQL:   localhost:6036" -ForegroundColor Cyan
+Write-Host "  - Redis:   localhost:6037" -ForegroundColor Cyan
+
+Read-Host | Out-Null
diff --git a/team-require/api/README.md b/team-require/api/README.md
new file mode 100644
index 0000000..8ffaea0
--- /dev/null
+++ b/team-require/api/README.md
@@ -0,0 +1,14 @@
+# API 接口文档
+
+## 目录
+
+### Database 相关
+
+- [检查数据库连接并获取表结构](database-check.md)
+- [创建数据库配置](database-create.md)
+- [获取数据库列表](database-list.md)
+- [获取子表列表](subtable-list.md)
+
+---
+
+> 接口如有更新，请同步更新此文档
diff --git a/team-require/api/database-check.md b/team-require/api/database-check.md
new file mode 100644
index 0000000..68da395
--- /dev/null
+++ b/team-require/api/database-check.md
@@ -0,0 +1,103 @@
+# 检查数据库连接并获取表结构
+
+## 接口地址
+
+```
+POST /database/check
+```
+
+## 请求参数
+
+| 参数 | 类型 | 必填 | 说明 |
+|------|------|------|------|
+| db_type | string | 是 | 数据库类型：`mysql`、`postgres` |
+| host | string | 是 | 数据库主机 |
+| port | int | 是 | 数据库端口 |
+| username | string | 是 | 用户名 |
+| password | string | 否 | 密码 |
+| database | string | 是 | 数据库名 |
+| charset | string | 否 | 字符集，默认 `utf8mb4` |
+| ssl_mode | string | 否 | SSL 模式 |
+| database_id | string | 否 | 已存在的数据库ID，用于恢复字段映射 |
+
+## 请求示例
+
+```json
+{
+  "db_type": "mysql",
+  "host": "localhost",
+  "port": 3306,
+  "username": "root",
+  "password": "root",
+  "database": "students",
+  "charset": "utf8mb4",
+  "database_id": "xxx-xxx-xxx"  // 可选，用于恢复字段映射
+}
+```
+
+## 返回参数
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| success | bool | 是否连接成功 |
+| message | string | 消息 |
+| database | string | 数据库名 |
+| tables | array | 表结构列表 |
+
+### tables[] 详情
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| table_name | string | 表名 |
+| table_comment | string | 表注释 |
+| ddl | string | 建表 DDL（带 COMMENT 的映射后 DDL） |
+| columns | array | 列信息列表 |
+
+### columns[] 详情
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| column_name | string | 列名 |
+| data_type | string | 数据类型 |
+| column_type | string | 完整列类型 |
+| is_nullable | string | 是否可空（YES/NO） |
+| default_value | string | 默认值 |
+| column_key | string | 主键标识（PRI/MUL/UNI） |
+| extra | string | 额外信息（如 auto_increment） |
+| column_comment | string | 列注释 |
+| mapped_name | string | 字段中文映射名（已保存的映射） |
+
+## 返回示例
+
+```json
+{
+  "success": true,
+  "message": "connection successful",
+  "database": "students",
+  "tables": [
+    {
+      "table_name": "users",
+      "table_comment": "用户表",
+      "ddl": "CREATE TABLE `users` (\n  `id` int(10) unsigned NOT NULL COMMENT '用户ID'\n  ...\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4",
+      "columns": [
+        {
+          "column_name": "id",
+          "data_type": "int",
+          "column_type": "int(10) unsigned",
+          "is_nullable": "NO",
+          "default_value": "",
+          "column_key": "PRI",
+          "extra": "auto_increment",
+          "column_comment": "",
+          "mapped_name": "用户ID"
+        }
+      ]
+    }
+  ]
+}
+```
+
+## 使用场景
+
+1. **首次连接**：不传 `database_id`，获取实时表结构
+2. **恢复映射**：传入 `database_id`，返回已保存的 `mapped_name` 和 `ddl`
diff --git a/team-require/api/database-create.md b/team-require/api/database-create.md
new file mode 100644
index 0000000..d1dc72d
--- /dev/null
+++ b/team-require/api/database-create.md
@@ -0,0 +1,104 @@
+# 创建数据库配置
+
+## 接口地址
+
+```
+POST /database/add
+```
+
+## 请求参数
+
+| 参数 | 类型 | 必填 | 说明 |
+|------|------|------|------|
+| name | string | 是 | 数据库名称 |
+| description | string | 否 | 描述 |
+| db_type | string | 是 | 数据库类型 |
+| host | string | 是 | 主机 |
+| port | int | 是 | 端口 |
+| username | string | 是 | 用户名 |
+| password | string | 否 | 密码 |
+| database | string | 是 | 数据库名 |
+| charset | string | 否 | 字符集 |
+| ssl_mode | string | 否 | SSL 模式 |
+| sub_tables | array | 否 | 子表配置列表 |
+
+### sub_tables[] 详情
+
+| 参数 | 类型 | 必填 | 说明 |
+|------|------|------|------|
+| parent_table | string | 是 | 原始表名 |
+| sub_table_name | string | 是 | 子表别名 |
+| sub_table_comment | string | 否 | 子表注释 |
+| mapping_type | string | 否 | 映射类型 |
+| relation_field | string | 否 | 关联字段 |
+| relation_type | string | 否 | 关联类型 |
+| fields | array | 否 | 字段映射列表 |
+
+### fields[] 详情
+
+| 参数 | 类型 | 必填 | 说明 |
+|------|------|------|------|
+| column_name | string | 是 | 列名 |
+| mapped_name | string | 是 | 中文映射名 |
+
+## 请求示例
+
+```json
+{
+  "name": "学生数据库",
+  "description": "用于存储学生信息",
+  "db_type": "mysql",
+  "host": "localhost",
+  "port": 3306,
+  "username": "root",
+  "password": "root",
+  "database": "students",
+  "charset": "utf8mb4",
+  "sub_tables": [
+    {
+      "parent_table": "users",
+      "sub_table_name": "用户表",
+      "sub_table_comment": "用户信息",
+      "fields": [
+        {"column_name": "id", "mapped_name": "用户ID"},
+        {"column_name": "name", "mapped_name": "用户名"}
+      ]
+    }
+  ]
+}
+```
+
+## 返回参数
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| id | string | 数据库记录ID |
+| name | string | 数据库名称 |
+| db_type | string | 数据库类型 |
+| host | string | 主机 |
+| port | int | 端口 |
+| ... | ... | 其他字段 |
+
+## 返回示例
+
+```json
+{
+  "id": "xxx-xxx-xxx",
+  "name": "学生数据库",
+  "description": "用于存储学生信息",
+  "db_type": "mysql",
+  "host": "localhost",
+  "port": 3306,
+  "username": "root",
+  "password": "root",
+  "database": "students",
+  "table_count": 1,
+  "charset": "utf8mb4",
+  "created_at": "2026-03-06T15:00:00Z"
+}
+```
+
+## 说明
+
+- 创建时会自动连接数据库获取表结构 DDL
+- 如果传入了 `fields`（字段映射），会自动生成带 COMMENT 的新 DDL 并存储
diff --git a/team-require/api/database-list.md b/team-require/api/database-list.md
new file mode 100644
index 0000000..87b93b6
--- /dev/null
+++ b/team-require/api/database-list.md
@@ -0,0 +1,51 @@
+# 获取数据库列表
+
+## 接口地址
+
+```
+GET /database/list
+```
+
+## 请求参数
+
+无
+
+## 返回参数
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| list | array | 数据库列表 |
+
+### list[] 详情
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| id | string | 数据库ID |
+| name | string | 数据库名称 |
+| description | string | 描述 |
+| db_type | string | 数据库类型 |
+| host | string | 主机 |
+| port | int | 端口 |
+| database | string | 数据库名 |
+| table_count | int | 子表数量 |
+| created_at | string | 创建时间 |
+
+## 返回示例
+
+```json
+{
+  "list": [
+    {
+      "id": "xxx-xxx",
+      "name": "学生数据库",
+      "description": "用于存储学生信息",
+      "db_type": "mysql",
+      "host": "localhost",
+      "port": 3306,
+      "database": "students",
+      "table_count": 5,
+      "created_at": "2026-03-06T15:00:00Z"
+    }
+  ]
+}
+```
diff --git a/team-require/api/subtable-list.md b/team-require/api/subtable-list.md
new file mode 100644
index 0000000..c916bcb
--- /dev/null
+++ b/team-require/api/subtable-list.md
@@ -0,0 +1,75 @@
+# 获取子表列表
+
+## 接口地址
+
+```
+GET /sub-table/database/:database_id
+```
+
+## 路径参数
+
+| 参数 | 类型 | 必填 | 说明 |
+|------|------|------|------|
+| database_id | string | 是 | 数据库ID |
+
+## 返回参数
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| list | array | 子表列表 |
+
+### list[] 详情
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| id | string | 子表ID |
+| database_id | string | 关联的数据库ID |
+| parent_table | string | 原始表名 |
+| sub_table_name | string | 子表别名 |
+| sub_table_comment | string | 子表注释 |
+| mapping_type | string | 映射类型 |
+| relation_field | string | 关联字段 |
+| relation_type | string | 关联类型 |
+| fields | array | 字段映射列表 |
+| ddl | string | 建表 DDL（带 COMMENT） |
+| created_at | string | 创建时间 |
+
+### fields[] 详情
+
+| 参数 | 类型 | 说明 |
+|------|------|------|
+| column_name | string | 列名 |
+| mapped_name | string | 中文映射名 |
+
+## 返回示例
+
+```json
+{
+  "list": [
+    {
+      "id": "xxx-xxx",
+      "database_id": "database-xxx",
+      "parent_table": "users",
+      "sub_table_name": "用户表",
+      "sub_table_comment": "用户信息",
+      "mapping_type": "horizontal",
+      "relation_field": "id",
+      "relation_type": "one_to_many",
+      "fields": [
+        {"column_name": "id", "mapped_name": "用户ID"},
+        {"column_name": "name", "mapped_name": "用户名"}
+      ],
+      "ddl": "CREATE TABLE `users` (\n  `id` int(10) unsigned NOT NULL COMMENT '用户ID'\n  ...\n)",
+      "created_at": "2026-03-06T15:00:00Z"
+    }
+  ]
+}
+```
+
+## 使用场景
+
+用于恢复映射状态：
+1. 用户点击已存在的数据库的 "Map Tables" 按钮
+2. 调用此接口获取已保存的子表信息
+3. 根据 `parent_table` 勾选已选择的表
+4. 根据 `fields` 恢复字段映射
diff --git a/team-require/web/columns-api.md b/team-require/web/columns-api.md
new file mode 100644
index 0000000..a893fb8
--- /dev/null
+++ b/team-require/web/columns-api.md
@@ -0,0 +1,92 @@
+# 后端需求 - 表结构返回 columns 数据
+
+## 问题描述
+
+前端在 Edit Mapping 页面需要展示表的列信息（字段名、类型、COMMENT等），但前端自行解析 DDL 存在困难。
+
+## 需求
+
+后端在获取表结构列表时，需要同时返回：
+
+1. **DDL 语句**（已有的需求，继续保留）
+2. **结构化的 columns 数据**（新增）
+
+### 返回数据结构
+
+```json
+{
+  "success": true,
+  "tables": [
+    {
+      "table_name": "exam_scores",
+      "table_comment": "考试成绩表",
+      "ddl": "CREATE TABLE `exam_scores` (...)",
+      "columns": [
+        {
+          "column_name": "id",
+          "data_type": "int",
+          "column_type": "int(10) unsigned",
+          "is_nullable": "NO",
+          "default_value": null,
+          "column_key": "PRI",
+          "extra": "auto_increment",
+          "column_comment": ""
+        },
+        {
+          "column_name": "student_id",
+          "data_type": "int",
+          "column_type": "int(10) unsigned",
+          "is_nullable": "NO",
+          "default_value": null,
+          "column_key": "",
+          "extra": "",
+          "column_comment": ""
+        },
+        {
+          "column_name": "subject",
+          "data_type": "varchar",
+          "column_type": "varchar(50)",
+          "is_nullable": "NO",
+          "default_value": null,
+          "column_key": "",
+          "extra": "",
+          "column_comment": "科目"
+        },
+        {
+          "column_name": "score",
+          "data_type": "double",
+          "column_type": "double",
+          "is_nullable": "YES",
+          "default_value": null,
+          "column_key": "",
+          "extra": "",
+          "column_comment": "分数"
+        }
+      ]
+    }
+  ]
+}
+```
+
+### 字段说明
+
+| 字段 | 类型 | 说明 |
+|------|------|------|
+| column_name | string | 列名 |
+| data_type | string | 数据类型（如 int, varchar, double） |
+| column_type | string | 完整列类型（如 int(10) unsigned） |
+| is_nullable | string | 是否可空（YES/NO） |
+| default_value | string | 默认值 |
+| column_key | string | 主键标识（PRI/MUL/UNI） |
+| extra | string | 额外信息（如 auto_increment） |
+| column_comment | string | 列注释 |
+
+## 影响范围
+
+- 文件：`server/internal/service/database_service.go`
+- 函数：`getMySQLTables`, `getPostgresTables`
+- 数据模型：`server/internal/model/sub_table_info.go` 的 `ColumnInfo` 结构体
+
+## 优先级
+
+高 - 前端 Edit Mapping 页面字段映射功能依赖此数据
diff --git a/team-require/web/field-mapping.md b/team-require/web/field-mapping.md
new file mode 100644
index 0000000..02afa5e
--- /dev/null
+++ b/team-require/web/field-mapping.md
@@ -0,0 +1,89 @@
+# 后端需求 - 字段映射保存与读取
+
+## 问题描述
+
+前端 Edit Mapping 页面中，用户输入的字段中文映射名（mapped_name）在保存后，第二次打开时丢失了。
+
+## 原因分析
+
+1. **保存时**：前端只保存了表级别信息，没有保存字段的中文映射
+2. **加载时**：前端每次都从 `/database/check` 重新获取表结构，没有读取已保存的映射数据
+
+## 需求
+
+### 1. 保存字段映射
+
+前端保存时需要传递每个字段的中文映射名，后端需要存储这些数据。
+
+请求结构：
+```json
+{
+  "name": "数据库名",
+  "sub_tables": [
+    {
+      "parent_table": "users",
+      "sub_table_name": "用户表",
+      "sub_table_comment": "用户表",
+      "fields": [
+        {
+          "column_name": "id",
+          "mapped_name": "编号"
+        },
+        {
+          "column_name": "username",
+          "mapped_name": "用户名"
+        }
+      ]
+    }
+  ]
+}
+```
+
+### 2. 返回字段映射
+
+后端在返回表结构时，需要同时返回已保存的字段映射信息。
+
+返回结构：
+```json
+{
+  "success": true,
+  "tables": [
+    {
+      "table_name": "users",
+      "table_comment": "用户表",
+      "ddl": "...",
+      "columns": [
+        {
+          "column_name": "id",
+          "data_type": "int",
+          "column_type": "int(10)",
+          "column_comment": "",
+          "mapped_name": "编号"
+        },
+        {
+          "column_name": "username",
+          "data_type": "varchar",
+          "column_type": "varchar(50)",
+          "column_comment": "用户名",
+          "mapped_name": "用户名"
+        }
+      ]
+    }
+  ]
+}
+```
+
+### 3. 数据存储
+
+- 可以在 `sub_table_info` 表中增加 `fields` JSON 字段存储字段映射
+- 或者创建新的关联表 `sub_table_fields`
+
+## 影响范围
+
+- `server/internal/service/database_service.go` - Create/Update 方法
+- `server/internal/model/` - 数据模型修改
+- 子表映射的数据存储结构
+
+## 优先级
+
+高 - 用户输入的映射数据丢失影响使用体验
diff --git a/team-require/web/mapping-state.md b/team-require/web/mapping-state.md
new file mode 100644
index 0000000..6142913
--- /dev/null
+++ b/team-require/web/mapping-state.md
@@ -0,0 +1,43 @@
+# 后端需求 - 保存和恢复映射状态
+
+## 问题描述
+
+用户第一次选择表并设置字段映射后，第二次点击 "Map Tables" 按钮进入界面时，之前选择的表和设置的字段映射都丢失了。
+
+## 需求
+
+前端打开已存在的数据库映射时，需要恢复以下状态：
+
+### 1. 已选择的表列表
+
+后端需要在数据库记录中保存用户选择了哪些表（不仅仅是子表信息），或者在查询时返回该数据库关联的所有子表。
+
+### 2. 字段映射
+
+每个子表保存的字段映射（mapped_name）需要在前端重新加载时显示。
+
+## 期望的行为
+
+1. 用户点击已存在的数据库的 "Map Tables" 按钮
+2. 前端获取实时表结构
+3. 同时加载该数据库已保存的子表信息（包括选择的表和字段映射）
+4. 前端合并数据，显示：
+   - 已选择的表（勾选状态）
+   - 每个字段之前设置的 mapped_name
+
+## 技术实现建议
+
+在数据库表中增加或利用已有字段：
+
+- `sub_table_info` 表已包含 `Fields` JSON 字段存储字段映射
+- 需要在创建/更新数据库时保存选择的表列表
+- 或者在查询时返回该数据库下所有已创建的子表
+
+## 影响范围
+
+- 数据库创建/更新接口
+- 子表映射查询接口
+
+## 优先级
+
+高 - 影响用户体验，第二次进入无法看到之前的工作成果
diff --git a/team-require/web/todo-2026-3-6.md b/team-require/web/todo-2026-3-6.md
new file mode 100644
index 0000000..cc2547f
--- /dev/null
+++ b/team-require/web/todo-2026-3-6.md
@@ -0,0 +1,27 @@
+# Web 前端需求 TODO
+
+## 2026年3月
+
+### 2026-03-06
+
+- [x] **DDL 获取功能** - 后端需在获取表结构时返回 DDL 语句 ✔
+  - 相关文件：`server/internal/service/database_service.go`
+  - 函数：`getMySQLTables`, `getPostgresTables`
+  - 详细需求：[ddl-fetch.md](./ddl-fetch.md)
+
+- [x] **返回结构化 columns 数据** - 后端需返回完整的列信息（column_name, data_type, column_type, is_nullable, default_value, column_key, extra, column_comment）✔
+  - 相关文件：`server/internal/service/database_service.go`
+  - 函数：`getMySQLTables`, `getPostgresTables`
+  - 详细需求：[columns-api.md](./columns-api.md)
+
+- [x] **保存和读取字段映射** - 后端需支持保存/读取字段的中文映射名（mapped_name） ✔
+  - 相关文件：`server/internal/service/database_service.go`, `server/internal/model/`
+  - 详细需求：[field-mapping.md](./field-mapping.md)
+
+- [x] **保存和恢复映射状态** - 第二次进入 Map Tables 时需恢复之前选择的表和字段映射 ✔
+  - 相关文件：`server/internal/service/database_service.go`, `server/internal/model/`
+  - 详细需求：[mapping-state.md](./mapping-state.md)
+
+---
+
+> 需求完成后请完成者打 ✔
\ No newline at end of file
diff --git a/web/src/style.css b/web/src/style.css
index b113384..1e3591e 100644
--- a/web/src/style.css
+++ b/web/src/style.css
@@ -46,6 +46,27 @@ html.dark .el-select .el-select__wrapper {
   min-height: 42px;
 }
 
+html.dark .el-select:hover .el-input__wrapper,
+html.dark .el-select:hover .el-select__wrapper {
+  background-color: #1a1c25 !important;
+}
+
+/* 修复鼠标移出后出现白色背景的问题 */
+html.dark .el-select .el-input__wrapper:hover,
+html.dark .el-select .el-select__wrapper:hover {
+  background-color: #1a1c25 !important;
+}
+
+html.dark .el-select .el-input__wrapper,
+html.dark .el-select .el-select__wrapper {
+  background-color: #1a1c25 !important;
+}
+
+html.dark .el-form-item__content .el-input__wrapper,
+html.dark .el-form-item__content .el-select .el-input__wrapper {
+  background-color: #1a1c25 !important;
+}
+
 html.dark .el-select.el-select--large .el-input__wrapper {
   padding: 5px 11px;
   min-height: 46px;
@@ -188,6 +209,31 @@ html.dark .el-select .el-tag .el-tag__close:hover {
   color: #ffffff;
 }
 
+/* el-checkbox 暗色主题 - 金黄色选中 */
+html.dark .el-checkbox {
+  --el-checkbox-checked-text-color: #ffb700;
+  --el-checkbox-checked-bg-color: #ffb700;
+  --el-checkbox-checked-border-color: #ffb700;
+  --el-checkbox-input-border-color-hover: #ffb700;
+}
+
+html.dark .el-checkbox .el-checkbox__input.is-checked .el-checkbox__inner {
+  background-color: #ffb700;
+  border-color: #ffb700;
+}
+
+html.dark .el-checkbox .el-checkbox__input.is-checked .el-checkbox__inner::after {
+  border-color: #1f2937;
+}
+
+html.dark .el-checkbox .el-checkbox__label {
+  color: #e5e7eb;
+}
+
+html.dark .el-checkbox:hover .el-checkbox__inner {
+  border-color: #ffb700;
+}
+
 /* 柱状图增长动画 */
 @keyframes bar-grow {
   from {
@@ -222,3 +268,344 @@ html.dark .el-select .el-tag .el-tag__close:hover {
   opacity: 0;
   animation: progress-grow 2.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
 }
+
+/* ===== 通用组件交互优化 ===== */
+
+/* 通用弹窗动画 */
+@keyframes modal-fade-in {
+  0% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+  }
+}
+
+@keyframes modal-scale-in {
+  0% {
+    opacity: 0;
+    transform: scale(0.95) translateY(10px);
+  }
+  100% {
+    opacity: 1;
+    transform: scale(1) translateY(0);
+  }
+}
+
+@keyframes modal-slide-up {
+  0% {
+    opacity: 0;
+    transform: translateY(20px);
+  }
+  100% {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+.modal-overlay {
+  animation: modal-fade-in 0.2s ease-out forwards;
+}
+
+.modal-content {
+  animation: modal-scale-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
+}
+
+/* 按钮交互优化 */
+.btn-primary {
+  @apply bg-gradient-to-r from-primary-orange to-red-500 text-white px-4 py-2 rounded-lg font-medium flex items-center gap-2 transition-all duration-200;
+}
+
+.btn-primary:hover {
+  @apply from-orange-500 to-red-600;
+  transform: translateY(-1px);
+  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
+}
+
+.btn-primary:active {
+  transform: translateY(0);
+  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.2);
+}
+
+.btn-primary:disabled {
+  @apply opacity-50 cursor-not-allowed;
+  transform: none;
+  box-shadow: none;
+}
+
+.btn-secondary {
+  @apply bg-dark-600 text-gray-300 px-4 py-2 rounded-lg border border-dark-500 transition-all duration-200;
+}
+
+.btn-secondary:hover {
+  @apply bg-dark-500 border-gray-500;
+}
+
+.btn-secondary:active {
+  transform: scale(0.98);
+}
+
+.btn-icon {
+  @apply p-2 rounded-lg transition-all duration-150;
+}
+
+.btn-icon:hover {
+  @apply bg-dark-500;
+  transform: scale(1.05);
+}
+
+.btn-icon:active {
+  transform: scale(0.95);
+}
+
+/* 表单输入框交互 */
+.input-field {
+  @apply w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white placeholder-gray-500 transition-all duration-200;
+}
+
+.input-field:focus {
+  @apply outline-none border-primary-orange;
+  box-shadow: 0 0 0 3px rgba(255, 149, 0, 0.15);
+}
+
+.input-field:hover:not(:focus) {
+  @apply border-gray-500;
+}
+
+/* 表格样式优化 */
+.table-row {
+  @apply border-t border-dark-600 transition-all duration-200;
+}
+
+.table-row:hover {
+  @apply bg-dark-600/50;
+}
+
+.table-row:active {
+  @apply bg-dark-600;
+}
+
+/* 表格头部 */
+.table-header {
+  @apply bg-dark-600 text-sm font-medium text-gray-400;
+}
+
+/* 搜索框交互 */
+.search-input {
+  @apply bg-dark-600 border border-dark-500 rounded-lg py-2 pl-10 pr-4 text-white placeholder-gray-500 transition-all duration-200;
+}
+
+.search-input:focus {
+  @apply outline-none border-primary-orange;
+  box-shadow: 0 0 0 3px rgba(255, 149, 0, 0.15);
+}
+
+.search-input:hover:not(:focus) {
+  @apply border-gray-500;
+}
+
+/* 空状态优化 */
+.empty-state {
+  @apply py-12 text-center transition-all duration-300;
+}
+
+.empty-state-icon {
+  @apply text-gray-500 text-4xl mb-3 transition-transform duration-300;
+}
+
+.empty-state:hover .empty-state-icon {
+  @apply text-gray-400;
+  transform: scale(1.1);
+}
+
+/* 卡片悬停效果 */
+.card-hover {
+  @apply transition-all duration-200;
+}
+
+.card-hover:hover {
+  @apply shadow-lg;
+  transform: translateY(-2px);
+}
+
+/* 标签/徽章样式 */
+.badge {
+  @apply px-2 py-1 rounded text-sm font-medium transition-all duration-200;
+}
+
+.badge-success {
+  @apply bg-green-500/20 text-green-400;
+}
+
+.badge-warning {
+  @apply bg-yellow-500/20 text-yellow-400;
+}
+
+.badge-error {
+  @apply bg-red-500/20 text-red-400;
+}
+
+.badge-info {
+  @apply bg-blue-500/20 text-blue-400;
+}
+
+.badge-default {
+  @apply bg-gray-500/20 text-gray-400;
+}
+
+/* 状态指示点 */
+.status-dot {
+  @apply w-2 h-2 rounded-full transition-all duration-200;
+}
+
+.status-dot-active {
+  @apply bg-primary-success;
+  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
+}
+
+.status-dot-inactive {
+  @apply bg-gray-500;
+}
+
+.status-dot-error {
+  @apply bg-primary-danger;
+  box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
+}
+
+/* 加载动画 */
+@keyframes pulse-dot {
+  0%, 100% {
+    opacity: 1;
+  }
+  50% {
+    opacity: 0.5;
+  }
+}
+
+.loading-pulse {
+  animation: pulse-dot 1.5s ease-in-out infinite;
+}
+
+/* 步骤指示器 */
+.step-indicator {
+  @apply flex items-center justify-center gap-4 py-4;
+}
+
+.step-item {
+  @apply flex items-center gap-2;
+}
+
+.step-circle {
+  @apply w-8 h-8 rounded-full flex items-center justify-center text-sm font-medium transition-all duration-300;
+}
+
+.step-line {
+  @apply w-16 h-0.5 transition-all duration-300;
+}
+
+/* 复选框优化 */
+.checkbox-custom {
+  @apply w-4 h-4 rounded border-dark-500 bg-dark-600 text-primary-cyan transition-all duration-200;
+}
+
+.checkbox-custom:focus {
+  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
+}
+
+.checkbox-custom:checked {
+  @apply bg-primary-cyan border-primary-cyan;
+}
+
+/* 工具提示 */
+.tooltip {
+  @apply absolute z-50 px-2 py-1 text-xs rounded bg-dark-700 text-white shadow-lg pointer-events-none opacity-0 transition-opacity duration-200;
+}
+
+.tooltip-visible {
+  @apply opacity-100;
+}
+
+/* 滚动条美化 */
+::-webkit-scrollbar {
+  @apply w-2 h-2;
+}
+
+::-webkit-scrollbar-track {
+  @apply bg-dark-800 rounded-full;
+}
+
+::-webkit-scrollbar-thumb {
+  @apply bg-dark-600 rounded-full;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  @apply bg-gray-600;
+}
+
+/* 渐变文字 */
+.text-gradient {
+  @apply bg-clip-text text-transparent bg-gradient-to-r from-primary-orange to-red-500;
+}
+
+/* 玻璃拟态效果 */
+.glass {
+  @apply bg-dark-700/80 backdrop-blur-md border border-dark-500/50;
+}
+
+/* 焦点环 */
+.focus-ring {
+  @apply focus:outline-none focus:ring-2 focus:ring-primary-orange/50 focus:ring-offset-2 focus:ring-offset-dark-900;
+}
+
+/* ===== 加载动画 ===== */
+
+/* 简洁旋转 Loading */
+@keyframes loading-spin {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(360deg); }
+}
+
+.loading-spin {
+  animation: loading-spin 1s linear infinite;
+}
+
+/* 三个点脉冲 */
+@keyframes loading-dots {
+  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
+  40% { transform: scale(1); opacity: 1; }
+}
+
+.loading-dots span {
+  display: inline-block;
+  width: 8px;
+  height: 8px;
+  margin: 0 4px;
+  border-radius: 50%;
+  animation: loading-dots 1.4s ease-in-out infinite both;
+}
+
+.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
+.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
+.loading-dots span:nth-child(3) { animation-delay: 0s; }
+
+/* 进度条动画 */
+@keyframes loading-progress {
+  0% { width: 0%; }
+  50% { width: 70%; }
+  100% { width: 100%; }
+}
+
+.loading-progress-bar {
+  animation: loading-progress 2s ease-in-out infinite;
+}
+
+/* 骨架屏闪烁 */
+@keyframes loading-skeleton {
+  0% { opacity: 0.4; }
+  50% { opacity: 0.7; }
+  100% { opacity: 0.4; }
+}
+
+.loading-skeleton {
+  animation: loading-skeleton 1.5s ease-in-out infinite;
+}
diff --git a/web/src/views/Agents.vue b/web/src/views/Agents.vue
index 91846c2..d1fefca 100644
--- a/web/src/views/Agents.vue
+++ b/web/src/views/Agents.vue
@@ -231,7 +231,7 @@ const statusClass = (status: string) => {
           <i class="fa-solid fa-robot text-gray-400"></i>
           <span class="font-medium">Agents</span>
         </div>
-        <button @click="openCreate" class="bg-gradient-to-r from-primary-orange to-red-500 hover:from-orange-500 hover:to-red-600 text-white px-4 py-2 rounded-lg font-medium flex items-center gap-2 transition-all">
+        <button @click="openCreate" class="btn-primary">
           <i class="fa-solid fa-plus"></i>
           New Agent
         </button>
@@ -245,7 +245,7 @@ const statusClass = (status: string) => {
             v-model="searchQuery"
             type="text"
             placeholder="Search agents..."
-            class="w-full bg-dark-600 border border-dark-500 rounded-lg py-2 pl-10 pr-4 text-white placeholder-gray-500 focus:outline-none focus:border-primary-orange"
+            class="search-input w-full"
           >
         </div>
         <el-select v-model="filterStatus" placeholder="Select" class="w-40" size="large">
@@ -271,7 +271,7 @@ const statusClass = (status: string) => {
             </tr>
           </thead>
           <tbody>
-            <tr v-for="agent in filteredAgents()" :key="agent.id" class="border-t border-dark-600 hover:bg-dark-600/50 transition-colors">
+            <tr v-for="agent in filteredAgents()" :key="agent.id" class="table-row">
               <td class="px-5 py-4">
                 <div class="font-medium">{{ agent.name }}</div>
                 <div class="text-sm text-gray-500">{{ agent.description }}</div>
@@ -294,21 +294,21 @@ const statusClass = (status: string) => {
                 <div class="flex items-center justify-end gap-2">
                   <button
                     @click="toggleStatus(agent)"
-                    class="p-2 rounded-lg hover:bg-dark-500 transition-colors"
+                    class="btn-icon"
                     :title="agent.status === 'running' ? 'Stop' : 'Start'"
                   >
-                    <i :class="['fa-solid', agent.status === 'running' ? 'fa-stop' : 'fa-play', 'text-gray-400 hover:text-white']"></i>
+                    <i :class="['fa-solid', agent.status === 'running' ? 'fa-stop' : 'fa-play', 'text-gray-400']"></i>
                   </button>
                   <button
                     @click="openEdit(agent)"
-                    class="p-2 rounded-lg hover:bg-dark-500 transition-colors"
+                    class="btn-icon"
                     title="Edit"
                   >
-                    <i class="fa-solid fa-pen text-gray-400 hover:text-white"></i>
+                    <i class="fa-solid fa-pen text-gray-400"></i>
                   </button>
                   <button
                     @click="deleteAgent(agent.id)"
-                    class="p-2 rounded-lg hover:bg-dark-500 transition-colors"
+                    class="btn-icon"
                     title="Delete"
                   >
                     <i class="fa-solid fa-trash text-gray-400 hover:text-primary-danger"></i>
@@ -328,7 +328,7 @@ const statusClass = (status: string) => {
 
     <!-- 编辑弹窗 -->
     <Teleport to="body">
-      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50" @click.self="cancelEdit">
+      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50">
         <div class="bg-dark-700 rounded-2xl w-full max-w-lg border border-dark-500 shadow-2xl">
           <!-- 弹窗头部 -->
           <div class="flex items-center justify-between p-5 border-b border-dark-500">
@@ -345,7 +345,7 @@ const statusClass = (status: string) => {
               <input
                 v-model="editForm.name"
                 type="text"
-                class="w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white focus:outline-none focus:border-primary-orange"
+                class="input-field"
               >
             </div>
 
@@ -374,7 +374,7 @@ const statusClass = (status: string) => {
               <textarea
                 v-model="editForm.description"
                 rows="3"
-                class="w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white focus:outline-none focus:border-primary-orange resize-none"
+                class="input-field resize-none"
               ></textarea>
             </div>
           </div>
@@ -383,13 +383,13 @@ const statusClass = (status: string) => {
           <div class="flex items-center justify-end gap-3 p-5 border-t border-dark-500">
             <button
               @click="cancelEdit"
-              class="px-4 py-2 rounded-lg bg-dark-600 text-gray-300 hover:bg-dark-500 transition-colors"
+              class="btn-secondary"
             >
               Cancel
             </button>
             <button
               @click="saveEdit"
-              class="px-4 py-2 rounded-lg bg-gradient-to-r from-primary-orange to-red-500 text-white hover:from-orange-500 hover:to-red-600 transition-all"
+              class="btn-primary"
             >
               Save Changes
             </button>
@@ -400,7 +400,7 @@ const statusClass = (status: string) => {
 
     <!-- 新建 Agent 模态框 -->
     <Teleport to="body">
-      <div v-if="isCreating" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-4" @click.self="closeCreate">
+      <div v-if="isCreating" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-4">
         <div class="bg-dark-800 rounded-2xl w-full max-w-6xl h-[85vh] border border-dark-600 shadow-2xl overflow-hidden flex flex-col animate-modal-in">
           <!-- 模态框头部 -->
           <div class="flex items-center justify-between p-5 border-b border-dark-600 bg-dark-700/50">
@@ -625,13 +625,13 @@ const statusClass = (status: string) => {
             <div class="flex items-center gap-3">
               <button
                 @click="closeCreate"
-                class="px-6 py-2.5 rounded-xl bg-dark-600 text-gray-300 hover:bg-dark-500 border border-dark-500 transition-all hover:scale-105"
+                class="btn-secondary px-6 py-2.5"
               >
                 Cancel
               </button>
               <button
                 @click="saveNewAgent"
-                class="px-6 py-2.5 rounded-xl bg-gradient-to-r from-primary-orange to-red-500 text-white hover:from-orange-500 hover:to-red-600 transition-all hover:scale-105 shadow-lg shadow-primary-orange/30 flex items-center gap-2"
+                class="btn-primary px-6 py-2.5"
               >
                 <i class="fa-solid fa-plus"></i>
                 Create Agent
diff --git a/web/src/views/Database.vue b/web/src/views/Database.vue
index e44c686..b4e4875 100644
--- a/web/src/views/Database.vue
+++ b/web/src/views/Database.vue
@@ -1,47 +1,476 @@
 <script setup lang="ts">
-import { ref } from 'vue'
+import { ref, onMounted, computed, watch } from 'vue'
+import { ElMessage } from 'element-plus'
 
 interface Database {
-  id: number
+  id: string
+  name: string
+  description: string
+  db_type: string
+  host: string
+  port: number
+  username: string
+  password: string
+  database: string
+  table_count: number
+  created_at: string
+  updated_at: string
+}
+
+// 表信息
+interface TableInfo {
+  name: string
+  ddl: string
+  columns: ColumnInfo[]
+  table_comment?: string
+}
+
+// 字段信息
+interface ColumnInfo {
   name: string
   type: string
-  subtables: number
-  status: 'connected' | 'disconnected' | 'error'
-  createdAt: string
-  description: string
+  comment: string
+  mapped_name: string
+  column_type?: string
+  is_nullable?: string
+  default_value?: string
+  column_key?: string
+}
+
+// 解析 DDL 获取列信息
+function parseDDLColumns(ddl: string): ColumnInfo[] {
+  const columns: ColumnInfo[] = []
+  if (!ddl) return columns
+
+  // 移除 CREATE TABLE 语句，只保留括号内的内容
+  const match = ddl.match(/\(([\s\S]*)\)\s*.*$/m)
+  if (!match) return columns
+
+  const body = match[1]
+
+  // 按换行或逗号分割列定义（处理多行的情况）
+  const lines = body.split(/,\s*(?=`\w+`|\s*$)/)
+
+  for (const line of lines) {
+    const trimmed = line.trim()
+    if (!trimmed || trimmed.startsWith('PRIMARY KEY') || trimmed.startsWith('KEY ') ||
+        trimmed.startsWith('UNIQUE KEY') || trimmed.startsWith('FULLTEXT') ||
+        trimmed.startsWith('CONSTRAINT') || trimmed.startsWith('FOREIGN KEY') ||
+        trimmed.startsWith('ENGINE') || trimmed.startsWith('CHARSET') || trimmed.startsWith(')')) {
+      continue
+    }
+
+    // 解析列名（支持反引号和单引号）
+    const colNameMatch = trimmed.match(/^`?(\w+)`?\s+/)
+    if (!colNameMatch) continue
+
+    const name = colNameMatch[1]
+
+    // 提取列定义剩余部分
+    const rest = trimmed.substring(colNameMatch[0].length)
+
+    // 提取数据类型（到 NOT NULL / DEFAULT / COMMENT 之前）
+    const typeMatch = rest.match(/^([^\s]+(?:\s*\([^\)]+\))?)/)
+    const type = typeMatch ? typeMatch[1] : ''
+
+    // 提取 COMMENT
+    const commentMatch = trimmed.match(/COMMENT\s+['"]([^'"]*)['"]/i)
+    const comment = commentMatch ? commentMatch[1] : ''
+
+    // 提取默认值
+    const defaultMatch = trimmed.match(/DEFAULT\s+([^\s,]+)/i)
+    const defaultValue = defaultMatch ? defaultMatch[1] : ''
+
+    // 判断是否可空
+    const isNullable = trimmed.includes('NOT NULL') ? 'NO' : 'YES'
+
+    // 判断是否是主键
+    const isPrimaryKey = trimmed.includes('PRIMARY KEY')
+
+    columns.push({
+      name,
+      type,
+      comment,
+      mapped_name: '',
+      column_type: type,
+      is_nullable: isNullable,
+      default_value: defaultValue,
+      column_key: isPrimaryKey ? 'PRI' : '',
+    })
+  }
+
+  return columns
 }
 
 // 数据库数据
-const databases = ref<Database[]>([
-  { id: 1, name: 'production-db', type: 'MySQL', subtables: 24, status: 'connected', createdAt: '2025-04-10', description: 'Main production database' },
-  { id: 2, name: 'staging-db', type: 'MySQL', subtables: 18, status: 'connected', createdAt: '2025-04-08', description: 'Staging environment database' },
-  { id: 3, name: 'analytics-db', type: 'ClickHouse', subtables: 56, status: 'connected', createdAt: '2025-04-05', description: 'Analytics and reporting database' },
-  { id: 4, name: 'cache-db', type: 'Redis', subtables: 8, status: 'connected', createdAt: '2025-04-12', description: 'Cache layer database' },
-  { id: 5, name: 'test-db', type: 'MySQL', subtables: 12, status: 'disconnected', createdAt: '2025-04-11', description: 'Testing database' },
-])
+const databases = ref<Database[]>([])
+const loading = ref(false)
 
 // 编辑状态
 const editingDb = ref<Database | null>(null)
 const isEditing = ref(false)
 const isCreating = ref(false)
 const searchQuery = ref('')
-const filterStatus = ref<string>('all')
 
-const dbTypes = ['MySQL']
+// 表映射弹窗状态
+const isMapping = ref(false)
+const mappingDb = ref<Database | null>(null)
+const tables = ref<TableInfo[]>([])
+const tableLoading = ref(false)
+const tableSearchQuery = ref('')
+const selectedTables = ref<TableInfo[]>([]) // 选中的表列表
+const tablePage = ref(1)
+const tablePageSize = ref(10)
+const currentTableIndex = ref(0)
+
+// 搜索时重置分页
+watch(tableSearchQuery, () => {
+  tablePage.value = 1
+})
+
+// 映射步骤：1-选择表, 2-DDl和映射
+const mappingStep = ref(1)
+
+// 当前正在编辑的表
+const selectedTable = computed(() => {
+  if (selectedTables.value.length === 0) return null
+  return selectedTables.value[currentTableIndex.value] || null
+})
+
+// 检查表是否被选中
+const isTableSelected = (tableName: string) => {
+  return selectedTables.value.some(t => t.name === tableName)
+}
+
+// 切换表的选择状态
+const toggleTableSelection = (table: TableInfo) => {
+  const index = selectedTables.value.findIndex(t => t.name === table.name)
+  if (index >= 0) {
+    selectedTables.value.splice(index, 1)
+    // 调整当前索引
+    if (currentTableIndex.value >= selectedTables.value.length) {
+      currentTableIndex.value = Math.max(0, selectedTables.value.length - 1)
+    }
+  } else {
+    selectedTables.value.push(table)
+  }
+}
+
+// 全选所有表
+const selectAllTables = () => {
+  selectedTables.value = [...filteredTables()]
+  currentTableIndex.value = 0
+}
+
+// 清除所有选择
+const clearAllTables = () => {
+  selectedTables.value = []
+  currentTableIndex.value = 0
+}
+
+// 上一张表
+const prevTable = () => {
+  if (currentTableIndex.value > 0) {
+    currentTableIndex.value--
+  }
+}
+
+// 下一张表
+const nextTable = () => {
+  if (currentTableIndex.value < selectedTables.value.length - 1) {
+    currentTableIndex.value++
+  }
+}
+
+// 过滤后的表
+const filteredTables = () => {
+  let result = tables.value
+  if (tableSearchQuery.value) {
+    result = result.filter(t => t.name.toLowerCase().includes(tableSearchQuery.value.toLowerCase()))
+  }
+  return result
+}
+
+const paginatedTables = computed(() => {
+  const start = (tablePage.value - 1) * tablePageSize.value
+  const end = start + tablePageSize.value
+  return filteredTables().slice(start, end)
+})
+
+const totalFilteredTables = computed(() => filteredTables().length)
+
+// 关闭映射弹窗
+const closeMapping = () => {
+  isMapping.value = false
+  mappingDb.value = null
+  tables.value = []
+  selectedTables.value = []
+  currentTableIndex.value = 0
+  mappingStep.value = 1
+  tableSearchQuery.value = ''
+  tablePage.value = 1
+}
+
+// 打开映射弹窗（从列表页面点击映射按钮）
+const openMapping = async (db: Database) => {
+  mappingDb.value = db
+  tables.value = []
+  selectedTables.value = []
+  currentTableIndex.value = 0
+  mappingStep.value = 1
+  tableLoading.value = true
+  isMapping.value = true
+
+  try {
+    // 并行获取实时表结构和已保存的映射数据
+    const [checkRes, mappingRes] = await Promise.all([
+      fetch(`${API_BASE}/database/check`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          db_type: db.db_type,
+          host: db.host,
+          port: db.port,
+          username: db.username,
+          password: db.password,
+          database: db.database,
+          charset: 'utf8mb4',
+        }),
+      }),
+      // 如果是已存在的数据库，获取已保存的映射
+      db.id ? fetch(`${API_BASE}/sub-table/database/${db.id}`) : Promise.resolve(null),
+    ])
+
+    if (!checkRes.ok) {
+      throw new Error(`HTTP ${checkRes.status}`)
+    }
+
+    const result = await checkRes.json()
+
+    // 获取已保存的映射数据
+    let savedMappings: any = {}
+    let savedTableNames: string[] = []  // 已保存的表名列表
+    if (mappingRes && mappingRes.ok) {
+      const mappingResult = await mappingRes.json()
+      // 后端返回的是 list 字段
+      const tablesList = mappingResult.list || mappingResult.tables || []
+      if (tablesList.length > 0) {
+        // 构建映射表: parent_table -> fields[]
+        for (const table of tablesList) {
+          savedMappings[table.parent_table] = table.fields || []
+          savedTableNames.push(table.parent_table)
+        }
+      }
+    }
+
+    if (result.success && result.tables) {
+      tables.value = result.tables.map((table: any) => {
+        const ddl = table.ddl || ''
+        // 获取该表已保存的字段映射
+        const savedFields = savedMappings[table.table_name] || []
+
+        // 如果有 columns 数据则使用，否则尝试从 DDL 解析
+        let columns: ColumnInfo[]
+        if (table.columns && table.columns.length > 0) {
+          columns = table.columns.map((col: any) => {
+            // 查找已保存的映射
+            const savedField = savedFields.find((f: any) => f.column_name === col.column_name)
+            return {
+              name: col.column_name,
+              type: col.data_type || col.column_type || '',
+              column_type: col.column_type || '',
+              comment: col.column_comment || '',
+              is_nullable: col.is_nullable || '',
+              default_value: col.default_value || '',
+              column_key: col.column_key || '',
+              mapped_name: savedField?.mapped_name || col.mapped_name || '',
+            }
+          })
+        } else if (ddl) {
+          // 从 DDL 解析列信息，并合并已保存的映射
+          columns = parseDDLColumns(ddl).map(col => {
+            const savedField = savedFields.find((f: any) => f.column_name === col.name)
+            return {
+              ...col,
+              mapped_name: savedField?.mapped_name || '',
+            }
+          })
+        } else {
+          columns = []
+        }
+
+        return {
+          name: table.table_name,
+          table_comment: table.table_comment || '',
+          ddl,
+          columns,
+        }
+      })
+
+      // 恢复已选择的表
+      if (savedTableNames.length > 0) {
+        selectedTables.value = tables.value.filter(t => savedTableNames.includes(t.name))
+      } else {
+        selectedTables.value = []
+      }
+      currentTableIndex.value = 0
+    } else {
+      ElMessage.warning(result.message || '获取表结构失败')
+    }
+  } catch (error: any) {
+    console.error('获取表结构失败:', error)
+    ElMessage.error('获取表结构失败: ' + error.message)
+  } finally {
+    tableLoading.value = false
+  }
+}
+
+// 进入下一步（选择表后）
+const goToStep2 = () => {
+  if (selectedTables.value.length > 0) {
+    mappingStep.value = 2
+    currentTableIndex.value = 0
+  }
+}
+
+// 返回上一步
+const goToStep1 = () => {
+  mappingStep.value = 1
+}
+
+// 保存映射（创建或更新数据库 + 保存子表）
+const saveMapping = async () => {
+  if (!mappingDb.value) {
+    ElMessage.warning('数据库信息不存在')
+    return
+  }
+
+  const isEditing = !!mappingDb.value.id
+  const subTablesData = selectedTables.value.map(table => ({
+    parent_table: table.name,
+    sub_table_name: table.table_comment || table.name,
+    sub_table_comment: table.table_comment || '',
+    fields: (table.columns || []).map(col => ({
+      column_name: col.name,
+      mapped_name: col.mapped_name || '',  // 这里实际存的是 comment
+    })),
+  }))
+
+  try {
+    let response: Response
+
+    if (isEditing) {
+      // 编辑模式：调用更新接口
+      response = await fetch(`${API_BASE}/database/${mappingDb.value.id}`, {
+        method: 'PUT',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          name: mappingDb.value.name,
+          description: mappingDb.value.description,
+          db_type: mappingDb.value.db_type,
+          host: mappingDb.value.host,
+          port: mappingDb.value.port,
+          username: mappingDb.value.username,
+          password: mappingDb.value.password,
+          database: mappingDb.value.database,
+          sub_tables: subTablesData,
+        }),
+      })
+    } else {
+      // 新建模式：调用创建接口
+      response = await fetch(`${API_BASE}/database/add`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          name: mappingDb.value.name,
+          description: mappingDb.value.description,
+          db_type: mappingDb.value.db_type,
+          host: mappingDb.value.host,
+          port: mappingDb.value.port,
+          username: mappingDb.value.username,
+          password: mappingDb.value.password,
+          database: mappingDb.value.database,
+          sub_tables: subTablesData,
+        }),
+      })
+    }
+
+    if (response.ok) {
+      const result = await response.json()
+      if (!isEditing) {
+        databases.value.push(result)
+      }
+      closeMapping()
+      ElMessage.success(isEditing ? 'Mapping updated successfully' : 'Database created successfully')
+      // 刷新列表
+      fetchDatabases()
+    } else {
+      const errorData = await response.json()
+      ElMessage.error(errorData.error || (isEditing ? 'Failed to update mapping' : 'Failed to create database'))
+    }
+  } catch (error: any) {
+    console.error('保存失败:', error)
+    ElMessage.error('保存失败: ' + error.message)
+  }
+}
+
+const dbTypes = ['MySQL', 'PostgreSQL', 'MongoDB', 'Redis']
+
+// API 基础 URL
+const API_BASE = 'http://localhost:8082'
+
+// 获取列表数据
+const fetchDatabases = async () => {
+  loading.value = true
+  try {
+    const response = await fetch(`${API_BASE}/database/list`)
+    if (!response.ok) {
+      throw new Error('Failed to fetch databases')
+    }
+    const data = await response.json()
+    databases.value = data.list || []
+  } catch (error) {
+    console.error('Failed to fetch databases:', error)
+    ElMessage.error('Failed to load databases')
+    databases.value = []
+  } finally {
+    loading.value = false
+  }
+}
+
+onMounted(() => {
+  fetchDatabases()
+})
 
 // 新建 Database 表单
 const newDbForm = ref({
   name: '',
-  type: 'MySQL',
+  db_type: 'MySQL',
   description: '',
+  host: 'localhost',
+  port: 3306,
+  username: 'root',
+  password: '',
+  database: '',
 })
 
 // 打开新建弹窗
 const openCreate = () => {
   newDbForm.value = {
     name: '',
-    type: 'MySQL',
+    db_type: 'MySQL',
     description: '',
+    host: 'localhost',
+    port: 3306,
+    username: 'root',
+    password: '',
+    database: '',
   }
   isCreating.value = true
 }
@@ -51,26 +480,108 @@ const closeCreate = () => {
   isCreating.value = false
 }
 
-// 保存新建
-const saveNewDb = () => {
-  const newId = Math.max(...databases.value.map(d => d.id)) + 1
-  databases.value.push({
-    id: newId,
-    name: newDbForm.value.name || 'Untitled Database',
-    type: newDbForm.value.type,
-    subtables: 0,
-    status: 'disconnected',
-    createdAt: new Date().toISOString().split('T')[0],
-    description: newDbForm.value.description,
-  })
-  isCreating.value = false
+// 测试连接并获取表列表
+const testConnect = async () => {
+  try {
+    const response = await fetch(`${API_BASE}/database/check`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        db_type: newDbForm.value.db_type,
+        host: newDbForm.value.host,
+        port: newDbForm.value.port,
+        username: newDbForm.value.username,
+        password: newDbForm.value.password,
+        database: newDbForm.value.database,
+        charset: 'utf8mb4',
+      }),
+    })
+
+    if (!response.ok) {
+      throw new Error(`HTTP ${response.status}`)
+    }
+
+    const result = await response.json()
+
+    if (result.success) {
+      // 连接成功，显示表映射弹窗
+      const dbInfo: Database = {
+        id: '',
+        name: newDbForm.value.name || 'Untitled Database',
+        description: newDbForm.value.description,
+        db_type: newDbForm.value.db_type,
+        host: newDbForm.value.host,
+        port: newDbForm.value.port,
+        username: newDbForm.value.username,
+        password: newDbForm.value.password,
+        database: newDbForm.value.database,
+        table_count: 0,
+        created_at: '',
+        updated_at: '',
+      }
+
+      // 将后端返回的表数据映射到前端格式
+      if (result.tables && result.tables.length > 0) {
+        tables.value = result.tables.map((table: any) => {
+          const ddl = table.ddl || ''
+          // 如果有 columns 数据则使用，否则尝试从 DDL 解析
+          let columns: ColumnInfo[]
+          if (table.columns && table.columns.length > 0) {
+            columns = table.columns.map((col: any) => ({
+              name: col.column_name,
+              type: col.data_type || col.column_type || '',
+              column_type: col.column_type || '',
+              comment: col.column_comment || '',
+              is_nullable: col.is_nullable || '',
+              default_value: col.default_value || '',
+              column_key: col.column_key || '',
+              mapped_name: '',
+            }))
+          } else if (ddl) {
+            // 从 DDL 解析列信息
+            columns = parseDDLColumns(ddl)
+          } else {
+            columns = []
+          }
+
+          return {
+            name: table.table_name,
+            table_comment: table.table_comment || '',
+            ddl,
+            columns,
+          }
+        })
+      }
+
+      // 默认不选中任何表
+      selectedTables.value = []
+      currentTableIndex.value = 0
+      mappingStep.value = 1
+      mappingDb.value = dbInfo
+      isMapping.value = true
+      isCreating.value = false // 关闭创建弹窗
+      ElMessage.success('Connection successful! Please select tables to map.')
+    } else {
+      ElMessage.error(result.message || 'Connection failed')
+    }
+  } catch (error: any) {
+    console.error('Connection test failed:', error)
+    ElMessage.error('Connection test failed: ' + error.message)
+  }
 }
 
 // 编辑表单数据
 const editForm = ref({
   name: '',
-  type: '',
+  db_type: '',
   description: '',
+  host: '',
+  port: 0,
+  username: '',
+  password: '',
+  database: '',
 })
 
 // 打开编辑弹窗
@@ -78,21 +589,51 @@ const openEdit = (db: Database) => {
   editingDb.value = db
   editForm.value = {
     name: db.name,
-    type: db.type,
+    db_type: db.db_type,
     description: db.description,
+    host: db.host,
+    port: db.port,
+    username: db.username,
+    password: db.password,
+    database: db.database,
   }
   isEditing.value = true
 }
 
 // 保存编辑
-const saveEdit = () => {
+const saveEdit = async () => {
   if (editingDb.value) {
-    const index = databases.value.findIndex(d => d.id === editingDb.value!.id)
-    if (index !== -1) {
-      databases.value[index] = {
-        ...databases.value[index],
-        ...editForm.value,
+    try {
+      const response = await fetch(`${API_BASE}/database/${editingDb.value.id}`, {
+        method: 'PUT',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          name: editForm.value.name,
+          description: editForm.value.description,
+          db_type: editForm.value.db_type,
+          host: editForm.value.host,
+          port: editForm.value.port,
+          username: editForm.value.username,
+          password: editForm.value.password,
+          database: editForm.value.database,
+        }),
+      })
+      if (response.ok) {
+        const updatedDb = await response.json()
+        const index = databases.value.findIndex(d => d.id === editingDb.value!.id)
+        if (index !== -1) {
+          databases.value[index] = updatedDb
+        }
+        ElMessage.success('Database updated successfully')
+      } else {
+        const errorData = await response.json()
+        ElMessage.error(errorData.error || 'Failed to update database')
       }
+    } catch (error) {
+      console.error('Failed to update database:', error)
+      ElMessage.error('Failed to update database')
     }
   }
   isEditing.value = false
@@ -104,40 +645,35 @@ const cancelEdit = () => {
   editingDb.value = null
 }
 
-// 切换状态
-const toggleStatus = (db: Database) => {
-  if (db.status === 'connected') {
-    db.status = 'disconnected'
-  } else if (db.status === 'disconnected') {
-    db.status = 'connected'
-  }
-}
-
 // 删除 Database
-const deleteDb = (id: number) => {
-  databases.value = databases.value.filter(d => d.id !== id)
+const deleteDb = async (id: string) => {
+  try {
+    const response = await fetch(`${API_BASE}/database/${id}`, {
+      method: 'DELETE'
+    })
+    if (response.ok) {
+      databases.value = databases.value.filter(d => d.id !== id)
+      ElMessage.success('Database deleted successfully')
+    } else {
+      ElMessage.error('Failed to delete database')
+    }
+  } catch (error) {
+    console.error('Failed to delete database:', error)
+    ElMessage.error('Failed to delete database')
+  }
 }
 
 // 过滤后的 Databases
 const filteredDatabases = () => {
   return databases.value.filter(db => {
-    const matchSearch = db.name.toLowerCase().includes(searchQuery.value.toLowerCase()) ||
-                       db.type.toLowerCase().includes(searchQuery.value.toLowerCase())
-    const matchStatus = filterStatus.value === 'all' || db.status === filterStatus.value
-    return matchSearch && matchStatus
+    const matchSearch = !searchQuery.value ||
+      db.name.toLowerCase().includes(searchQuery.value.toLowerCase()) ||
+      db.db_type.toLowerCase().includes(searchQuery.value.toLowerCase()) ||
+      db.host.toLowerCase().includes(searchQuery.value.toLowerCase())
+    return matchSearch
   })
 }
 
-// 状态颜色
-const statusClass = (status: string) => {
-  switch (status) {
-    case 'connected': return 'bg-primary-success'
-    case 'disconnected': return 'bg-gray-500'
-    case 'error': return 'bg-primary-danger'
-    default: return 'bg-gray-500'
-  }
-}
-
 </script>
 
 <template>
@@ -149,86 +685,77 @@ const statusClass = (status: string) => {
         <i class="fa-solid fa-database text-gray-400"></i>
         <span class="font-medium">Database</span>
       </div>
-      <button @click="openCreate" class="bg-gradient-to-r from-primary-orange to-red-500 hover:from-orange-500 hover:to-red-600 text-white px-4 py-2 rounded-lg font-medium flex items-center gap-2 transition-all">
+      <button @click="openCreate" class="btn-primary">
         <i class="fa-solid fa-plus"></i>
         New Connection
       </button>
     </div>
 
-    <!-- 搜索和筛选 -->
+    <!-- 搜索 -->
     <div class="flex gap-4 mb-6">
       <div class="flex-1 relative">
         <i class="fa-solid fa-search absolute left-3 top-1/2 -translate-y-1/2 text-gray-400"></i>
         <input
           v-model="searchQuery"
           type="text"
-          placeholder="Search databases..."
-          class="w-full bg-dark-600 border border-dark-500 rounded-lg py-2 pl-10 pr-4 text-white placeholder-gray-500 focus:outline-none focus:border-primary-orange"
+          placeholder="Search databases by name, type or host..."
+          class="search-input w-full"
         >
       </div>
-      <el-select v-model="filterStatus" placeholder="Select" class="w-40" size="large">
-          <el-option label="All Status" value="all" />
-          <el-option label="Connected" value="connected" />
-          <el-option label="Disconnected" value="disconnected" />
-          <el-option label="Error" value="error" />
-        </el-select>
     </div>
 
     <!-- Database 列表 -->
     <div class="bg-dark-700 rounded-xl overflow-hidden">
-      <table class="w-full">
+      <div v-if="loading" class="py-12 text-center text-gray-400">
+        <i class="fa-solid fa-circle-notch fa-spin text-2xl mb-2"></i>
+        <p>Loading...</p>
+      </div>
+      <table v-else class="w-full">
         <thead class="bg-dark-600">
           <tr>
             <th class="text-left px-5 py-3 text-sm font-medium text-gray-400">Database Name</th>
             <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Type</th>
-            <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Subtables</th>
-            <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Status</th>
+            <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Host</th>
+            <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Tables</th>
             <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Created</th>
             <th class="text-center px-5 py-3 text-sm font-medium text-gray-400">Actions</th>
           </tr>
         </thead>
         <tbody>
-          <tr v-for="db in filteredDatabases()" :key="db.id" class="border-t border-dark-600 hover:bg-dark-600/50 transition-colors">
+          <tr v-for="db in filteredDatabases()" :key="db.id" class="table-row">
             <td class="px-5 py-4">
               <div class="font-medium">{{ db.name }}</div>
               <div class="text-sm text-gray-500">{{ db.description }}</div>
             </td>
             <td class="px-5 py-4 text-center">
-              <span class="bg-dark-500 px-2 py-1 rounded text-sm">{{ db.type }}</span>
+              <span class="bg-dark-500 px-2 py-1 rounded text-sm">{{ db.db_type }}</span>
+            </td>
+            <td class="px-5 py-4 text-center text-gray-400 text-sm">
+              {{ db.host }}:{{ db.port }}
             </td>
             <td class="px-5 py-4 text-center">
-              <span class="text-primary-cyan">{{ db.subtables }}</span>
+              <span class="text-primary-cyan">{{ db.table_count }}</span>
             </td>
-            <td class="px-5 py-4 text-center">
-              <span
-                class="px-3 py-1 rounded-full text-xs capitalize"
-                :class="{
-                  'bg-green-500/20 text-green-400': db.status === 'connected',
-                  'bg-gray-500/20 text-gray-400': db.status === 'disconnected',
-                  'bg-red-500/20 text-red-400': db.status === 'error'
-                }"
-              >{{ db.status }}</span>
-            </td>
-            <td class="px-5 py-4 text-center text-gray-400 text-sm">{{ db.createdAt }}</td>
+            <td class="px-5 py-4 text-center text-gray-400 text-sm">{{ db.created_at?.split('T')[0] }}</td>
             <td class="px-5 py-4">
               <div class="flex items-center justify-center gap-2">
                 <button
-                  @click="toggleStatus(db)"
-                  class="p-2 rounded-lg hover:bg-dark-500 transition-colors"
-                  :title="db.status === 'connected' ? 'Disconnect' : 'Connect'"
+                  @click="openMapping(db)"
+                  class="btn-icon"
+                  title="Map Tables"
                 >
-                  <i :class="['fa-solid', db.status === 'connected' ? 'fa-stop' : 'fa-play', 'text-gray-400 hover:text-white']"></i>
+                  <i class="fa-solid fa-link text-gray-400"></i>
                 </button>
                 <button
                   @click="openEdit(db)"
-                  class="p-2 rounded-lg hover:bg-dark-500 transition-colors"
+                  class="btn-icon"
                   title="Edit"
                 >
-                  <i class="fa-solid fa-pen text-gray-400 hover:text-white"></i>
+                  <i class="fa-solid fa-pen text-gray-400"></i>
                 </button>
                 <button
                   @click="deleteDb(db.id)"
-                  class="p-2 rounded-lg hover:bg-dark-500 transition-colors"
+                  class="btn-icon"
                   title="Delete"
                 >
                   <i class="fa-solid fa-trash text-gray-400 hover:text-primary-danger"></i>
@@ -240,20 +767,20 @@ const statusClass = (status: string) => {
       </table>
 
       <!-- 空状态 -->
-      <div v-if="filteredDatabases().length === 0" class="py-12 text-center text-gray-500">
-        <i class="fa-solid fa-database text-4xl mb-3"></i>
+      <div v-if="filteredDatabases().length === 0" class="empty-state">
+        <i class="fa-solid fa-database empty-state-icon"></i>
         <p>No databases found</p>
       </div>
     </div>
 
     <!-- 编辑弹窗 -->
     <Teleport to="body">
-      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50" @click.self="cancelEdit">
-        <div class="bg-dark-700 rounded-2xl w-full max-w-lg border border-dark-500 shadow-2xl">
+      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50 modal-overlay">
+        <div class="bg-dark-700 rounded-2xl w-full max-w-lg border border-dark-500 shadow-2xl modal-content">
           <!-- 弹窗头部 -->
           <div class="flex items-center justify-between p-5 border-b border-dark-500">
             <h3 class="text-lg font-semibold">Edit Database</h3>
-            <button @click="cancelEdit" class="text-gray-400 hover:text-white transition-colors">
+            <button @click="cancelEdit" class="btn-icon">
               <i class="fa-solid fa-xmark text-xl"></i>
             </button>
           </div>
@@ -265,38 +792,86 @@ const statusClass = (status: string) => {
               <input
                 v-model="editForm.name"
                 type="text"
-                class="w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white focus:outline-none focus:border-primary-orange"
+                class="input-field"
               >
             </div>
 
-            <div>
-              <label class="block text-sm font-medium text-gray-300 mb-2">Type</label>
-              <el-select v-model="editForm.type" placeholder="Select" class="w-full" size="large">
-                <el-option v-for="type in dbTypes" :key="type" :label="type" :value="type" />
-              </el-select>
-            </div>
-
             <div>
               <label class="block text-sm font-medium text-gray-300 mb-2">Description</label>
               <textarea
                 v-model="editForm.description"
-                rows="3"
-                class="w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white focus:outline-none focus:border-primary-orange resize-none"
+                rows="2"
+                class="input-field resize-none"
               ></textarea>
             </div>
+
+            <div>
+              <label class="block text-sm font-medium text-gray-300 mb-2">Type</label>
+              <el-select v-model="editForm.db_type" placeholder="Select" class="w-full" size="large">
+                <el-option v-for="type in dbTypes" :key="type" :label="type" :value="type" />
+              </el-select>
+            </div>
+
+            <!-- 连接凭据 -->
+            <div class="space-y-4 pt-2">
+              <div class="grid grid-cols-2 gap-4">
+                <div>
+                  <label class="block text-sm font-medium text-gray-300 mb-2">Host</label>
+                  <input
+                    v-model="editForm.host"
+                    type="text"
+                    class="input-field"
+                  >
+                </div>
+                <div>
+                  <label class="block text-sm font-medium text-gray-300 mb-2">Port</label>
+                  <input
+                    v-model="editForm.port"
+                    type="number"
+                    class="input-field"
+                  >
+                </div>
+              </div>
+              <div>
+                <label class="block text-sm font-medium text-gray-300 mb-2">Database</label>
+                <input
+                  v-model="editForm.database"
+                  type="text"
+                  placeholder="Database name..."
+                  class="input-field"
+                >
+              </div>
+              <div>
+                <label class="block text-sm font-medium text-gray-300 mb-2">User</label>
+                <input
+                  v-model="editForm.username"
+                  type="text"
+                  class="input-field"
+                >
+              </div>
+              <div>
+                <label class="block text-sm font-medium text-gray-300 mb-2">Password</label>
+                <input
+                  v-model="editForm.password"
+                  type="password"
+                  placeholder="Leave blank to keep current"
+                  class="input-field"
+                >
+              </div>
+            </div>
           </div>
 
           <!-- 弹窗底部 -->
           <div class="flex items-center justify-end gap-3 p-5 border-t border-dark-500">
             <button
               @click="cancelEdit"
-              class="px-4 py-2 rounded-lg bg-dark-600 text-gray-300 hover:bg-dark-500 transition-colors"
+              class="btn-secondary"
             >
               Cancel
             </button>
             <button
               @click="saveEdit"
-              class="px-4 py-2 rounded-lg bg-gradient-to-r from-primary-orange to-red-500 text-white hover:from-orange-500 hover:to-red-600 transition-all"
+              class="btn-primary"
             >
               Save Changes
             </button>
@@ -307,8 +882,8 @@ const statusClass = (status: string) => {
 
     <!-- 新建 Database 弹窗 -->
     <Teleport to="body">
-      <div v-if="isCreating" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-4" @click.self="closeCreate">
-        <div class="bg-dark-800 rounded-2xl w-full max-w-lg border border-dark-600 shadow-2xl overflow-hidden animate-modal-in">
+      <div v-if="isCreating" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-4 modal-overlay">
+        <div class="bg-dark-800 rounded-2xl w-full max-w-lg border border-dark-600 shadow-2xl overflow-hidden modal-content">
           <!-- 弹窗头部 -->
           <div class="flex items-center justify-between p-5 border-b border-dark-600 bg-dark-700/50">
             <div class="flex items-center gap-3">
@@ -320,7 +895,7 @@ const statusClass = (status: string) => {
                 <p class="text-sm text-gray-400">Configure your database connection</p>
               </div>
             </div>
-            <button @click="closeCreate" class="text-gray-400 hover:text-white transition-all p-2 hover:bg-dark-600 rounded-lg">
+            <button @click="closeCreate" class="btn-icon">
               <i class="fa-solid fa-xmark text-xl"></i>
             </button>
           </div>
@@ -333,46 +908,291 @@ const statusClass = (status: string) => {
                 v-model="newDbForm.name"
                 type="text"
                 placeholder="Enter database name..."
-                class="w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white placeholder-gray-500 focus:outline-none focus:border-primary-orange"
+                class="input-field"
               >
             </div>
 
-            <div>
-              <label class="block text-sm font-medium text-gray-300 mb-2">Type</label>
-              <el-select v-model="newDbForm.type" placeholder="Select" class="w-full" size="large">
-                <el-option v-for="type in dbTypes" :key="type" :label="type" :value="type" />
-              </el-select>
-            </div>
-
             <div>
               <label class="block text-sm font-medium text-gray-300 mb-2">Description</label>
               <textarea
                 v-model="newDbForm.description"
-                rows="3"
+                rows="2"
                 placeholder="Describe this database..."
-                class="w-full bg-dark-600 border border-dark-500 rounded-lg px-4 py-2.5 text-white placeholder-gray-500 focus:outline-none focus:border-primary-orange resize-none"
+                class="input-field resize-none"
               ></textarea>
             </div>
+
+            <div>
+              <label class="block text-sm font-medium text-gray-300 mb-2">Type</label>
+              <el-select v-model="newDbForm.db_type" placeholder="Select" class="w-full" size="large">
+                <el-option v-for="type in dbTypes" :key="type" :label="type" :value="type" />
+              </el-select>
+            </div>
+
+            <!-- 连接凭据 - 当选择MySQL时显示 -->
+            <div v-if="newDbForm.db_type === 'MySQL'" class="space-y-4 pt-2">
+              <div class="grid grid-cols-2 gap-4">
+                <div>
+                  <label class="block text-sm font-medium text-gray-300 mb-2">Host</label>
+                  <input
+                    v-model="newDbForm.host"
+                    type="text"
+                    placeholder="localhost"
+                    class="input-field"
+                  >
+                </div>
+                <div>
+                  <label class="block text-sm font-medium text-gray-300 mb-2">Port</label>
+                  <input
+                    v-model="newDbForm.port"
+                    type="number"
+                    placeholder="3306"
+                    class="input-field"
+                  >
+                </div>
+              </div>
+              <div>
+                <label class="block text-sm font-medium text-gray-300 mb-2">Database</label>
+                <input
+                  v-model="newDbForm.database"
+                  type="text"
+                  placeholder="Database name..."
+                  class="input-field"
+                >
+              </div>
+              <div>
+                <label class="block text-sm font-medium text-gray-300 mb-2">User</label>
+                <input
+                  v-model="newDbForm.username"
+                  type="text"
+                  placeholder="root"
+                  class="input-field"
+                >
+              </div>
+              <div>
+                <label class="block text-sm font-medium text-gray-300 mb-2">Password</label>
+                <input
+                  v-model="newDbForm.password"
+                  type="password"
+                  placeholder="Enter password..."
+                  class="input-field"
+                >
+              </div>
+            </div>
           </div>
 
           <!-- 底部操作栏 -->
           <div class="flex items-center justify-end gap-3 p-5 border-t border-dark-600 bg-dark-700/50">
             <button
               @click="closeCreate"
-              class="px-4 py-2 rounded-lg bg-dark-600 text-gray-300 hover:bg-dark-500 transition-colors"
+              class="btn-secondary"
             >
               Cancel
             </button>
             <button
-              @click="saveNewDb"
-              class="px-4 py-2 rounded-lg bg-gradient-to-r from-primary-orange to-red-500 text-white hover:from-orange-500 hover:to-red-600 transition-all flex items-center gap-2"
+              @click="testConnect"
+              class="btn-primary"
             >
-              <i class="fa-solid fa-plus"></i>
-              Create Database
+              <i class="fa-solid fa-plug"></i>
+              Connect
             </button>
           </div>
         </div>
       </div>
     </Teleport>
+
+    <!-- 表映射弹窗 -->
+    <Teleport to="body">
+      <div v-if="isMapping" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-4 modal-overlay">
+        <div class="bg-dark-800 rounded-2xl w-full max-w-6xl h-[85vh] border border-dark-600 shadow-2xl overflow-hidden flex flex-col modal-content">
+          <!-- 弹窗头部 -->
+          <div class="flex items-center justify-between p-5 border-b border-dark-600 bg-dark-700/50">
+            <div class="flex items-center gap-3">
+              <div class="w-10 h-10 rounded-xl bg-gradient-to-br from-primary-cyan to-blue-500 flex items-center justify-center">
+                <i class="fa-solid fa-table text-white"></i>
+              </div>
+              <div>
+                <h3 class="text-xl font-semibold text-white">Table Mapping</h3>
+                <p class="text-sm text-gray-400">
+                  <span v-if="mappingStep === 1">Step 1: Select tables to map</span>
+                  <span v-else>Step 2: Edit DDL and field mapping</span>
+                </p>
+              </div>
+            </div>
+            <button @click="closeMapping" class="btn-icon">
+              <i class="fa-solid fa-xmark text-xl"></i>
+            </button>
+          </div>
+
+          <!-- 步骤指示器 -->
+          <div class="flex items-center justify-center gap-4 py-4 border-b border-dark-600">
+            <div class="flex items-center gap-2">
+              <div :class="['w-8 h-8 rounded-full flex items-center justify-center text-sm', mappingStep >= 1 ? 'bg-primary-cyan text-white' : 'bg-dark-600 text-gray-400']">1</div>
+              <span :class="mappingStep >= 1 ? 'text-white' : 'text-gray-400'">Select Tables</span>
+            </div>
+            <div class="w-16 h-0.5" :class="mappingStep >= 2 ? 'bg-primary-cyan' : 'bg-dark-600'"></div>
+            <div class="flex items-center gap-2">
+              <div :class="['w-8 h-8 rounded-full flex items-center justify-center text-sm', mappingStep >= 2 ? 'bg-primary-cyan text-white' : 'bg-dark-600 text-gray-400']">2</div>
+              <span :class="mappingStep >= 2 ? 'text-white' : 'text-gray-400'">Edit Mapping</span>
+            </div>
+          </div>
+
+          <!-- 弹窗内容 -->
+          <div class="flex-1 flex flex-col overflow-hidden">
+            <!-- 步骤1：选择表 -->
+            <template v-if="mappingStep === 1">
+              <div class="p-4 flex-1 overflow-auto">
+                <div class="mb-3">
+                  <span class="text-sm font-medium text-gray-300">Select Tables ({{ selectedTables.length }} selected):</span>
+                </div>
+                <div class="relative mb-3">
+                  <i class="fa-solid fa-search absolute left-3 top-1/2 -translate-y-1/2 text-gray-400"></i>
+                  <input
+                    v-model="tableSearchQuery"
+                    type="text"
+                    placeholder="Filter tables by name..."
+                    class="search-input w-full"
+                  >
+                </div>
+                <!-- 表选择列表 -->
+                <div class="bg-dark-900 rounded-lg p-2 max-h-80 overflow-auto">
+                  <div
+                    v-for="table in paginatedTables"
+                    :key="table.name"
+                    class="flex items-center gap-3 p-3 rounded-lg cursor-pointer"
+                    @click="toggleTableSelection(table)"
+                  >
+                    <el-checkbox
+                      :model-value="isTableSelected(table.name)"
+                      @click.stop
+                      @change="toggleTableSelection(table)"
+                      class="table-checkbox"
+                    />
+                    <span class="font-medium text-white">{{ table.name }}</span>
+                    <span class="text-xs text-gray-500">{{ table.columns.length }} columns</span>
+                  </div>
+                  <div v-if="paginatedTables.length === 0" class="py-8 text-center text-gray-500">
+                    No tables found
+                  </div>
+                </div>
+                <!-- 分页 -->
+                <div class="flex justify-center mt-3">
+                  <el-pagination
+                    v-if="totalFilteredTables > tablePageSize"
+                    v-model:current-page="tablePage"
+                    :page-size="tablePageSize"
+                    :total="totalFilteredTables"
+                    layout="prev, pager, next"
+                    background
+                    small
+                  />
+                </div>
+              </div>
+            </template>
+
+            <!-- 步骤2：DDL和字段映射 -->
+            <template v-if="mappingStep === 2">
+              <!-- DDL 展示 -->
+              <div class="p-4 border-b border-dark-600 bg-dark-900/50">
+                <div class="flex items-center justify-between mb-2">
+                  <span class="text-sm font-medium text-gray-300">DDL - {{ selectedTable?.name }}</span>
+                  <div class="flex items-center gap-2">
+                    <button
+                      v-if="selectedTables.length > 1"
+                      @click="prevTable"
+                      class="p-1 hover:bg-dark-700 rounded"
+                      :disabled="currentTableIndex <= 0"
+                    >
+                      <i class="fa-solid fa-chevron-left text-gray-400"></i>
+                    </button>
+                    <span class="text-xs text-gray-500">{{ currentTableIndex + 1 }} / {{ selectedTables.length }}</span>
+                    <button
+                      v-if="selectedTables.length > 1"
+                      @click="nextTable"
+                      class="p-1 hover:bg-dark-700 rounded"
+                      :disabled="currentTableIndex >= selectedTables.length - 1"
+                    >
+                      <i class="fa-solid fa-chevron-right text-gray-400"></i>
+                    </button>
+                  </div>
+                </div>
+                <div v-if="selectedTable" class="bg-dark-950 rounded-lg p-4 max-h-32 overflow-auto">
+                  <pre class="text-xs text-primary-cyan font-mono whitespace-pre-wrap">{{ selectedTable.ddl }}</pre>
+                </div>
+              </div>
+
+              <!-- 字段映射表格 - 卡片式布局 -->
+              <div class="flex-1 overflow-auto p-4">
+                <div v-if="selectedTable" class="space-y-2">
+                  <!-- 表头 -->
+                  <div class="grid grid-cols-12 gap-4 px-4 py-2 text-xs font-medium text-gray-500 uppercase tracking-wider">
+                    <div class="col-span-3">Field Name</div>
+                    <div class="col-span-2">Type</div>
+                    <div class="col-span-7">Comment / Mapping</div>
+                  </div>
+                  <!-- 字段行 -->
+                  <div
+                    v-for="col in selectedTable.columns"
+                    :key="col.name"
+                    class="grid grid-cols-12 gap-4 items-center px-4 py-3 bg-dark-800 rounded-lg border border-dark-600"
+                  >
+                    <!-- 字段名 -->
+                    <div class="col-span-3 flex items-center gap-2">
+                      <div class="w-6 h-6 rounded bg-primary-yellow/20 flex items-center justify-center flex-shrink-0">
+                        <i class="fa-solid fa-key text-xs text-primary-yellow"></i>
+                      </div>
+                      <span class="font-medium text-primary-yellow truncate" :title="col.name">{{ col.name }}</span>
+                    </div>
+                    <!-- 类型 -->
+                    <div class="col-span-2">
+                      <span class="inline-flex items-center px-2 py-1 rounded-md bg-dark-600 text-gray-400 text-xs font-mono">
+                        {{ col.type }}
+                      </span>
+                    </div>
+                    <!-- 注释输入 -->
+                    <div class="col-span-7">
+                      <input
+                        v-model="col.mapped_name"
+                        type="text"
+                        :placeholder="col.comment || 'Enter comment...'"
+                        class="w-full bg-dark-700 border border-dark-500 rounded-lg px-3 py-2 text-sm text-white placeholder-gray-500 focus:outline-none focus:border-primary-cyan focus:ring-1 focus:ring-primary-cyan/30 transition-all"
+                      >
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </template>
+          </div>
+
+          <!-- 底部操作栏 -->
+          <div class="flex items-center justify-between p-5 border-t border-dark-600 bg-dark-700/50">
+            <div class="text-sm text-gray-400">
+              <span v-if="mappingStep === 1">{{ selectedTables.length }} tables selected</span>
+              <span v-else>Editing: {{ selectedTable?.name }}</span>
+            </div>
+            <div class="flex items-center gap-3">
+              <template v-if="mappingStep === 1">
+                <button @click="closeMapping" class="btn-secondary">Skip</button>
+                <button
+                  @click="goToStep2"
+                  :disabled="selectedTables.length === 0"
+                  class="px-4 py-2 rounded-lg bg-gradient-to-r from-primary-cyan to-blue-500 text-white hover:from-cyan-500 hover:to-blue-600 transition-all disabled:opacity-50 disabled:cursor-not-allowed flex items-center gap-2"
+                >
+                  Next <i class="fa-solid fa-arrow-right"></i>
+                </button>
+              </template>
+              <template v-else>
+                <button @click="goToStep1" class="btn-secondary">
+                  <i class="fa-solid fa-arrow-left"></i> Back
+                </button>
+                <button @click="saveMapping" class="px-4 py-2 rounded-lg bg-gradient-to-r from-primary-cyan to-blue-500 text-white hover:from-cyan-500 hover:to-blue-600 transition-all flex items-center gap-2">
+                  <i class="fa-solid fa-save"></i> Save Mapping
+                </button>
+              </template>
+            </div>
+          </div>
+        </div>
+      </div>
+    </Teleport>
   </div>
 </template>
diff --git a/web/src/views/MCP.vue b/web/src/views/MCP.vue
index 7f774bf..a79bae3 100644
--- a/web/src/views/MCP.vue
+++ b/web/src/views/MCP.vue
@@ -1,6 +1,5 @@
 <script setup lang="ts">
-import { ref, onMounted, onUnmounted, nextTick } from 'vue'
-import * as echarts from 'echarts'
+import { ref, nextTick } from 'vue'
 
 interface MCPServer {
   id: number
@@ -321,19 +320,28 @@ const isEditingFileClosing = ref(false)
 // AI 对话面板
 const isChatOpen = ref(false)
 
-// 图谱生成相关
+// 流程生成相关
 const isGeneratingGraph = ref(false)
 const isGraphGenerated = ref(false)
 
 const generateGraph = () => {
   isGeneratingGraph.value = true
-  // 模拟生成图谱的等待过程
+  // 模拟生成流程的等待过程
   setTimeout(() => {
     isGeneratingGraph.value = false
     isGraphGenerated.value = true
-    nextTick(() => {
-      initGraphChart()
-    })
+    // 初始化树结构 - 默认展开第一层
+    if (workflowData.value.length > 0) {
+      workflowData.value[0].expanded = true
+      if (workflowData.value[0].children) {
+        workflowData.value[0].children.forEach(child => {
+          child.expanded = false
+          if (child.children) {
+            child.children.forEach(gc => gc.expanded = false)
+          }
+        })
+      }
+    }
   }, 2500)
 }
 
@@ -424,254 +432,106 @@ const sendMessage = () => {
   }, 1000)
 }
 
-// 图谱相关
-const graphChartRef = ref<HTMLElement | null>(null)
-let chartInstance: echarts.ECharts | null = null
+// 流程相关 - 金字塔结构
 
-const initGraphChart = () => {
-  if (!graphChartRef.value) return
-
-  // 节点数据 - 更有科技感的节点，添加初始位置
-  const nodes = [
-    { id: '1', name: '用户问题', category: 0, symbolSize: 70, x: 0, y: -200, desc: '用户提出的原始问题' },
-    { id: '2', name: '问题分析', category: 1, symbolSize: 55, x: 0, y: -80, desc: '对问题进行拆解和分析' },
-    { id: '3', name: '数据获取', category: 1, symbolSize: 50, x: -120, y: 20, desc: '从数据源获取相关信息' },
-    { id: '4', name: '方案生成', category: 2, symbolSize: 55, x: 0, y: 80, desc: '基于分析结果生成解决方案' },
-    { id: '5', name: '方案评估', category: 2, symbolSize: 45, x: 0, y: 180, desc: '评估方案的可行性和效果' },
-    { id: '6', name: '最终输出', category: 3, symbolSize: 60, x: 0, y: 280, desc: '生成最终的问题解答' },
-    { id: '7', name: '知识库', category: 0, symbolSize: 40, x: 150, y: 0, desc: '存储领域知识' },
-    { id: '8', name: '规则引擎', category: 2, symbolSize: 40, x: 120, y: 120, desc: '业务规则处理' },
-    { id: '9', name: 'AI模型', category: 3, symbolSize: 45, x: -100, y: 150, desc: '大语言模型调用' },
-    { id: '10', name: '向量检索', category: 1, symbolSize: 38, x: -150, y: -20, desc: '相似度检索' },
-  ]
-
-  const links = [
-    { source: '1', target: '2', label: '分析' },
-    { source: '2', target: '3', label: '获取' },
-    { source: '2', target: '7', label: '查询' },
-    { source: '2', target: '10', label: '检索' },
-    { source: '3', target: '4', label: '生成' },
-    { source: '10', target: '4', label: '增强' },
-    { source: '4', target: '5', label: '评估' },
-    { source: '4', target: '8', label: '校验' },
-    { source: '4', target: '9', label: '调用' },
-    { source: '5', target: '6', label: '输出' },
-    { source: '7', target: '4', label: '支撑' },
-  ]
-
-  // 深邃科技配色 - 更赛博朋克的感觉
-  const CAT_COLORS = [
-    { main: '#00D9FF', glow: '#00D9FF', gradient: ['#0077B6', '#00D9FF'] },      // 青色 - 语义对象
-    { main: '#10B981', glow: '#10B981', gradient: ['#059669', '#34D399'] },       // 绿色 - 对象行为
-    { main: '#F59E0B', glow: '#F59E0B', gradient: ['#D97706', '#FBBF24'] },       // 琥珀色 - 约束规则
-    { main: '#8B5CF6', glow: '#A78BFA', gradient: ['#6D28D9', '#A78BFA'] },       // 紫色 - 编排流程
-  ]
-
-  const option = {
-    backgroundColor: 'transparent',
-    // 全局特效
-    graphic: [
-      {
-        type: 'group',
-        children: [
-          // 背景光晕1
-          {
-            type: 'circle',
-            shape: { cx: '30%', cy: '30%', r: 200 },
-            style: { fill: 'radialGradient', gradient: { type: 'radial', colorStops: [{ offset: 0, color: 'rgba(0, 217, 255, 0.15)' }, { offset: 1, color: 'transparent' }] } },
-          },
-          // 背景光晕2
-          {
-            type: 'circle',
-            shape: { cx: '70%', cy: '70%', r: 180 },
-            style: { fill: 'radialGradient', gradient: { type: 'radial', colorStops: [{ offset: 0, color: 'rgba(139, 92, 246, 0.12)' }, { offset: 1, color: 'transparent' }] } },
-          },
-        ],
-      },
-    ],
-    tooltip: {
-      trigger: 'item',
-      backgroundColor: 'rgba(10, 14, 26, 0.95)',
-      borderColor: 'rgba(0, 217, 255, 0.3)',
-      borderWidth: 1,
-      textStyle: { color: '#e6edf3', fontSize: 12 },
-      extraCssText: 'box-shadow: 0 0 20px rgba(0, 217, 255, 0.2); border-radius: 8px;',
-    },
-    series: [{
-      type: 'graph',
-      layout: 'force',
-      // 持续动画 - 节点漂浮
-      animation: true,
-      animationDuration: 1500,
-      animationEasingUpdate: 'quinticInOut',
-      // 布局参数 - 修复边连接问题
-      force: {
-        repulsion: 350,
-        edgeLength: [80, 180],
-        gravity: 0.1,
-        layoutAnimation: true,
-        friction: 0.85,
-        alphaDecay: 0.02,
-      },
-      // 节点数据
-      data: nodes.map(n => {
-        const color = CAT_COLORS[n.category]
-        return {
-          id: n.id,
-          name: n.name,
-          category: n.category,
-          symbolSize: n.symbolSize,
-          x: n.x,
-          y: n.y,
-          // 渐变色节点
-          symbol: 'circle',
-          // 标签设置
-          label: {
-            show: true,
-            position: 'bottom',
-            distance: 8,
-            fontSize: 11,
-            fontWeight: 600,
-            color: '#E2E8F0',
-            textBorderColor: '#0a0e1a',
-            textBorderWidth: 3,
-            formatter: '{b}',
-          },
-          // 节点样式 - 科技感
-          itemStyle: {
-            color: {
-              type: 'radial',
-              x: 0.3,
-              y: 0.3,
-              r: 0.7,
-              colorStops: [
-                { offset: 0, color: color.gradient[1] },
-                { offset: 0.7, color: color.gradient[0] },
-                { offset: 1, color: color.main },
-              ],
-            },
-            shadowBlur: 25,
-            shadowColor: color.glow,
-            borderColor: 'rgba(255,255,255,0.3)',
-            borderWidth: 1,
-          },
-          // 呼吸效果通过 emphasis 实现
-          emphasis: {
-            focus: 'adjacency',
-            scale: 1.15,
-            itemStyle: {
-              shadowBlur: 40,
-              shadowColor: color.glow,
-              borderColor: '#fff',
-              borderWidth: 2,
-            },
-          },
-          // 原始数据
-          _data: n,
-        }
-      }),
-      // 边数据
-      links: links.map((l) => {
-        const sourceNode = nodes.find(n => n.id === l.source)
-        const color = sourceNode ? CAT_COLORS[sourceNode.category] : CAT_COLORS[0]
-        return {
-          source: l.source,
-          target: l.target,
-          // 边标签
-          label: {
-            show: true,
-            formatter: l.label,
-            fontSize: 9,
-            fontWeight: 500,
-            color: '#94A3B8',
-            backgroundColor: 'rgba(10, 14, 26, 0.8)',
-            padding: [2, 6],
-            borderRadius: 4,
-            textBorderColor: 'transparent',
-          },
-          // 边样式 - 科技感
-          lineStyle: {
-            color: {
-              type: 'linear',
-              x: 0, y: 0, x2: 1, y2: 1,
-              colorStops: [
-                { offset: 0, color: color.main + '40' },
-                { offset: 0.5, color: color.main + '80' },
-                { offset: 1, color: color.main + '40' },
-              ],
-            },
-            width: 1.5,
-            curveness: 0.15,
-            opacity: 0.7,
-            type: 'solid',
-          },
-          // 箭头 - 修复连线不连接到节点的问题
-          edgeSymbol: 'none',
-          edgeSymbolSize: 0,
-        }
-      }),
-      // 允许拖拽和缩放
-      roam: true,
-      draggable: true,
-      // 边标签
-      edgeLabel: {
-        show: true,
-        fontSize: 10,
-        color: '#94A3B8',
-      },
-      // 连线特效
-      emphasis: {
-        focus: 'adjacency',
-        scale: true,
-        lineStyle: {
-          width: 3,
-          opacity: 1,
-          shadowBlur: 15,
-          shadowColor: '#00D9FF',
-        },
-      },
-      // 顶部图例（隐藏）
-      legend: { show: false },
-    }],
-    // 视觉映射
-    visualMap: {
-      show: false,
-      type: 'continuous',
-      dimension: 2,
-      inRange: {
-        color: ['#00D9FF', '#10B981', '#F59E0B', '#8B5CF6'],
-      },
-    },
-  }
-
-  chartInstance = echarts.init(graphChartRef.value)
-  chartInstance.setOption(option)
-
-  // 初始布局动画后停止 - 使用 disableLayoutAnimation 来停止持续抖动
-  setTimeout(() => {
-    if (chartInstance) {
-      chartInstance.setOption({
-        series: [{
-          force: {
-            layoutAnimation: false, // 关闭布局动画，停止抖动
-          },
-        }],
-      })
-    }
-  }, 3000)
-
-  // Handle resize
-  const handleResize = () => chartInstance?.resize()
-  window.addEventListener('resize', handleResize)
+// 流程节点 - 树形结构
+interface WorkflowNode {
+  id: string
+  name: string
+  description: string
+  icon: string
+  color: string
+  bgColor: string
+  borderColor: string
+  status: 'pending' | 'processing' | 'completed'
+  expanded: boolean
+  children?: WorkflowNode[]
 }
 
-onMounted(() => {
-  // 图谱通过点击按钮生成，不再自动初始化
-})
+const workflowData = ref<WorkflowNode[]>([
+  {
+    id: 'output',
+    name: '最终输出',
+    description: '生成最终结果返回给用户',
+    icon: 'fa-check-circle',
+    color: 'text-green-400',
+    bgColor: 'from-green-500/20 to-green-500/5',
+    borderColor: 'border-green-500/30',
+    status: 'pending',
+    expanded: false,
+    children: [
+      {
+        id: 'generate',
+        name: '方案生成',
+        description: '基于分析结果构建解决方案',
+        icon: 'fa-lightbulb',
+        color: 'text-primary-orange',
+        bgColor: 'from-primary-orange/20 to-primary-orange/5',
+        borderColor: 'border-primary-orange/30',
+        status: 'pending',
+        expanded: false,
+        children: [
+          {
+            id: 'analyze',
+            name: '问题分析',
+            description: '拆解问题、提取关键信息、理解用户意图',
+            icon: 'fa-microscope',
+            color: 'text-purple-400',
+            bgColor: 'from-purple-500/20 to-purple-500/5',
+            borderColor: 'border-purple-500/30',
+            status: 'pending',
+            expanded: false,
+            children: [
+              {
+                id: 'question',
+                name: '用户问题',
+                description: '输入原始需求和问题描述',
+                icon: 'fa-question',
+                color: 'text-primary-cyan',
+                bgColor: 'from-primary-cyan/20 to-primary-cyan/5',
+                borderColor: 'border-primary-cyan/30',
+                status: 'pending',
+                expanded: false,
+              }
+            ]
+          },
+          {
+            id: 'data',
+            name: '数据获取',
+            description: '从知识库、向量数据库获取相关信息',
+            icon: 'fa-database',
+            color: 'text-green-400',
+            bgColor: 'from-green-500/20 to-green-500/5',
+            borderColor: 'border-green-500/30',
+            status: 'pending',
+            expanded: false,
+          }
+        ]
+      },
+      {
+        id: 'evaluate',
+        name: '方案评估',
+        description: '验证方案可行性和效果',
+        icon: 'fa-clipboard-check',
+        color: 'text-yellow-400',
+        bgColor: 'from-yellow-500/20 to-yellow-500/5',
+        borderColor: 'border-yellow-500/30',
+        status: 'pending',
+        expanded: false,
+      }
+    ]
+  }
+])
 
-onUnmounted(() => {
-  chartInstance?.dispose()
-})
+// 展开/收起节点
+const toggleNode = (node: WorkflowNode) => {
+  node.expanded = !node.expanded
+}
+
+// 递归渲染节点
+const renderWorkflow = (nodes: WorkflowNode[], level: number = 0) => {
+  return nodes
+}
 
 const openCreate = () => {
   newSkillForm.value = {
@@ -828,7 +688,7 @@ const statusClass = (status: string) => {
   animation: scale-in 0.5s ease-out forwards;
 }
 
-/* 图谱节点动画 */
+/* 流程节点动画 */
 .graph-node {
   transition: transform 0.3s ease;
 }
@@ -963,7 +823,7 @@ const statusClass = (status: string) => {
     </div>
 
     <Teleport to="body">
-      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50" @click.self="cancelEdit">
+      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50">
         <div class="bg-dark-700 rounded-2xl w-full max-w-lg border border-dark-500 shadow-2xl">
           <div class="flex items-center justify-between p-5 border-b border-dark-500">
             <h3 class="text-lg font-semibold">Edit Skill</h3>
@@ -1032,7 +892,7 @@ const statusClass = (status: string) => {
 
     <!-- 新建 Skill 模态框 -->
     <Teleport to="body">
-      <div v-if="isCreating" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-6" @click.self="createStep === 1 && closeCreate()">
+      <div v-if="isCreating" class="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-6">
         <!-- 步骤1：基本信息 -->
         <div v-if="createStep === 1" class="bg-dark-800 rounded-2xl w-full max-w-lg border border-dark-600 shadow-2xl overflow-hidden animate-modal-in">
           <!-- 头部 -->
@@ -1299,100 +1159,319 @@ const statusClass = (status: string) => {
                 :disabled="isGeneratingGraph || isGraphGenerated"
                 class="w-full bg-gradient-to-r from-primary-orange to-red-500 hover:from-orange-500 hover:to-red-600 text-white font-medium py-2 px-3 rounded-lg transition-all flex items-center justify-center gap-2 disabled:opacity-50 disabled:cursor-not-allowed"
               >
-                <i :class="['fa-solid fa-project-diagram', isGraphGenerated ? 'text-green-400' : '']"></i>
-                {{ isGraphGenerated ? '图谱已生成' : (isGeneratingGraph ? '生成中...' : '生成流程图谱') }}
+                <i :class="['fa-solid fa-sitemap', isGraphGenerated ? 'text-green-400' : '']"></i>
+                {{ isGraphGenerated ? '流程已生成' : (isGeneratingGraph ? '生成中...' : '生成流程') }}
               </button>
             </div>
           </div>
 
-          <!-- 中间：图谱视图 -->
+          <!-- 中间：流程视图 -->
           <div class="flex-1 relative overflow-hidden" style="background: linear-gradient(135deg, #0a0e1a 0%, #0f172a 50%, #0a0e1a 100%);">
-            <!-- 未生成图谱时的提示 -->
+            <!-- 未生成流程时的提示 -->
             <div v-if="!isGraphGenerated && !isGeneratingGraph" class="absolute inset-0 flex flex-col items-center justify-center z-10">
               <div class="w-24 h-24 rounded-2xl bg-dark-700 flex items-center justify-center mb-4">
-                <i class="fa-solid fa-project-diagram text-4xl text-gray-600"></i>
+                <i class="fa-solid fa-sitemap text-4xl text-gray-600"></i>
               </div>
-              <p class="text-gray-500 text-sm">点击左侧按钮生成流程图谱</p>
+              <p class="text-gray-500 text-sm">点击左侧按钮生成流程</p>
             </div>
 
-            <!-- 生成中的加载动画 -->
+            <!-- 生成中的加载动画 - 现代化设计 -->
             <div v-else-if="isGeneratingGraph" class="absolute inset-0 flex flex-col items-center justify-center z-10">
-              <!-- 科幻风格加载动画 -->
-              <div class="relative">
-                <!-- 外层六边形 -->
-                <div class="w-40 h-40 relative animate-spin-slow">
-                  <svg viewBox="0 0 100 100" class="w-full h-full">
-                    <!-- 外圈 -->
-                    <polygon points="50,2 95,27 95,73 50,98 5,73 5,27" fill="none" stroke="rgba(0,217,255,0.3)" stroke-width="1"/>
-                    <polygon points="50,8 90,29 90,71 50,92 10,71 10,29" fill="none" stroke="rgba(0,217,255,0.5)" stroke-width="1.5"/>
-                    <!-- 内圈 -->
-                    <polygon points="50,15 82,33 82,67 50,85 18,67 18,33" fill="none" stroke="rgba(139,92,246,0.4)" stroke-width="1"/>
-                    <!-- 旋转的连接线 -->
-                    <line x1="50" y1="2" x2="50" y2="20" stroke="rgba(0,217,255,0.8)" stroke-width="2" class="animate-pulse"/>
-                    <line x1="98" y1="50" x2="80" y2="50" stroke="rgba(139,92,246,0.8)" stroke-width="2" class="animate-pulse"/>
-                    <line x1="50" y1="98" x2="50" y2="80" stroke="rgba(0,217,255,0.8)" stroke-width="2" class="animate-pulse"/>
-                    <line x1="2" y1="50" x2="20" y2="50" stroke="rgba(139,92,246,0.8)" stroke-width="2" class="animate-pulse"/>
-                  </svg>
-                </div>
-
-                <!-- 中心核心 -->
-                <div class="absolute inset-0 flex items-center justify-center">
-                  <div class="w-16 h-16 rounded-full bg-gradient-to-br from-dark-900 to-dark-800 border-2 border-primary-cyan/50 flex items-center justify-center shadow-[0_0_30px_rgba(0,217,255,0.3)]">
-                    <div class="w-10 h-10 rounded-full bg-gradient-to-br from-primary-cyan to-purple-500 animate-pulse-slow flex items-center justify-center">
-                      <i class="fa-solid fa-brain text-white text-lg"></i>
-                    </div>
+              <!-- 现代化加载动画 -->
+              <div class="flex flex-col items-center">
+                <!-- 多层旋转环 + 脉冲点 -->
+                <div class="relative w-24 h-24 mb-8">
+                  <!-- 外环 -->
+                  <div class="absolute inset-0 border-2 border-primary-cyan/20 rounded-full"></div>
+                  <div class="absolute inset-1 border-2 border-t-primary-cyan rounded-full loading-spin" style="animation-duration: 1.5s;"></div>
+                  <!-- 中环 - 反向 -->
+                  <div class="absolute inset-2 border-2 border-purple-500/30 rounded-full" style="animation: loading-spin 2s linear infinite reverse;"></div>
+                  <!-- 内环 -->
+                  <div class="absolute inset-4 border-2 border-primary-cyan/40 rounded-full" style="animation: loading-spin 1s linear infinite;"></div>
+                  <!-- 中心脉冲 -->
+                  <div class="absolute inset-0 flex items-center justify-center">
+                    <div class="w-3 h-3 bg-primary-cyan rounded-full animate-pulse"></div>
+                  </div>
+                  <!-- 周围脉冲点 -->
+                  <div class="absolute inset-0 flex items-center justify-center" style="animation: loading-dots 1.4s ease-in-out infinite both;">
+                    <span class="absolute w-2 h-2 bg-primary-cyan rounded-full" style="top: 10%;"></span>
+                    <span class="absolute w-2 h-2 bg-purple-500 rounded-full" style="right: 10%;"></span>
+                    <span class="absolute w-2 h-2 bg-primary-orange rounded-full" style="bottom: 10%;"></span>
+                    <span class="absolute w-2 h-2 bg-green-500 rounded-full" style="left: 10%;"></span>
                   </div>
                 </div>
 
-                <!-- 浮动粒子 -->
-                <div class="absolute top-2 left-1/2 w-2 h-2 rounded-full bg-primary-cyan animate-float-particle"></div>
-                <div class="absolute bottom-4 right-2 w-1.5 h-1.5 rounded-full bg-purple-400 animate-float-particle" style="animation-delay: 0.5s"></div>
-                <div class="absolute top-1/3 left-2 w-1 h-1 rounded-full bg-cyan-300 animate-float-particle" style="animation-delay: 1s"></div>
-              </div>
-
-              <!-- 文字信息 -->
-              <div class="mt-8 text-center">
-                <div class="flex items-center justify-center gap-2 mb-2">
-                  <span class="w-2 h-2 rounded-full bg-primary-cyan animate-ping"></span>
-                  <span class="text-white font-medium tracking-wider">正在构建知识图谱</span>
+                <!-- 文字 -->
+                <div class="text-center mb-6">
+                  <p class="text-white font-medium text-lg mb-2">正在生成执行流程</p>
+                  <p class="text-gray-400 text-sm">Building your workflow...</p>
                 </div>
-                <p class="text-gray-400 text-sm">Neural Network Analysis</p>
-              </div>
 
-              <!-- 科幻进度条 -->
-              <div class="mt-8 w-64">
-                <div class="relative h-1 bg-dark-800 rounded-full overflow-hidden border border-dark-600">
-                  <!-- 扫描线 -->
-                  <div class="absolute inset-0">
-                    <div class="h-full bg-gradient-to-r from-transparent via-primary-cyan/30 to-transparent animate-scan"></div>
+                <!-- 步骤指示器 -->
+                <div class="flex items-center gap-2 mb-6">
+                  <div class="flex items-center gap-1.5">
+                    <div class="w-2 h-2 rounded-full bg-primary-cyan loading-pulse"></div>
+                    <span class="text-xs text-gray-500">分析</span>
+                  </div>
+                  <div class="w-8 h-px bg-dark-600"></div>
+                  <div class="flex items-center gap-1.5">
+                    <div class="w-2 h-2 rounded-full bg-gray-600"></div>
+                    <span class="text-xs text-gray-500">规划</span>
+                  </div>
+                  <div class="w-8 h-px bg-dark-600"></div>
+                  <div class="flex items-center gap-1.5">
+                    <div class="w-2 h-2 rounded-full bg-gray-600"></div>
+                    <span class="text-xs text-gray-500">执行</span>
+                  </div>
+                  <div class="w-8 h-px bg-dark-600"></div>
+                  <div class="flex items-center gap-1.5">
+                    <div class="w-2 h-2 rounded-full bg-gray-600"></div>
+                    <span class="text-xs text-gray-500">完成</span>
                   </div>
-                  <!-- 进度 -->
-                  <div class="h-full bg-gradient-to-r from-primary-cyan via-purple-400 to-primary-cyan animate-progress-width bg-[length:200%_100%]"></div>
                 </div>
-                <div class="flex justify-between mt-2 text-xs text-gray-500 font-mono">
-                  <span>INITIALIZING</span>
-                  <span>0%</span>
+
+                <!-- 进度条 -->
+                <div class="w-64">
+                  <div class="h-1 bg-dark-700 rounded-full overflow-hidden">
+                    <div class="h-full bg-gradient-to-r from-primary-cyan via-purple-500 to-primary-orange loading-progress-bar rounded-full"></div>
+                  </div>
                 </div>
               </div>
             </div>
 
             <!-- 背景光效层 -->
             <div v-show="isGraphGenerated" class="absolute inset-0 overflow-hidden">
-              <!-- 青色光晕 -->
-              <div class="absolute top-0 left-0 w-[500px] h-[500px] rounded-full opacity-20" style="background: radial-gradient(circle, rgba(0, 217, 255, 0.3) 0%, transparent 70%); filter: blur(60px);"></div>
-              <!-- 紫色光晕 -->
-              <div class="absolute bottom-0 right-0 w-[400px] h-[400px] rounded-full opacity-15" style="background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, transparent 70%); filter: blur(60px);"></div>
-              <!-- 网格线 -->
-              <div class="absolute inset-0 opacity-10" style="background-image: linear-gradient(rgba(0, 217, 255, 0.3) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 217, 255, 0.3) 1px, transparent 1px); background-size: 50px 50px;"></div>
+              <!-- 青色光晕 - 更亮更柔和 -->
+              <div class="absolute top-0 left-0 w-[500px] h-[500px] rounded-full opacity-30" style="background: radial-gradient(circle, rgba(0, 217, 255, 0.4) 0%, transparent 70%); filter: blur(80px);"></div>
+              <!-- 紫色光晕 - 更亮更柔和 -->
+              <div class="absolute bottom-0 right-0 w-[400px] h-[400px] rounded-full opacity-25" style="background: radial-gradient(circle, rgba(139, 92, 246, 0.4) 0%, transparent 70%); filter: blur(80px);"></div>
+              <!-- 中心补充光效 -->
+              <div class="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 w-[600px] h-[600px] rounded-full opacity-15" style="background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%); filter: blur(100px);"></div>
             </div>
 
-            <!-- ECharts 图谱容器 -->
-            <div v-show="isGraphGenerated" ref="graphChartRef" class="w-full h-full relative z-10"></div>
+            <!-- 金字塔/树形流程图展示 -->
+            <div v-show="isGraphGenerated" class="w-full h-full relative z-10 overflow-auto p-6">
+              <!-- 流程标题 -->
+              <div class="sticky top-0 bg-slate-900/80 backdrop-blur-sm px-4 py-3 border-b border-slate-700/50 mb-6 z-20">
+                <div class="flex items-center justify-between">
+                  <div class="flex items-center gap-2">
+                    <i class="fa-solid fa-sitemap text-primary-cyan"></i>
+                    <span class="text-sm font-medium text-white">执行流程</span>
+                    <span class="px-2 py-0.5 rounded-full bg-slate-700 text-xs text-slate-300">4层</span>
+                  </div>
+                  <span class="text-xs text-slate-400">点击节点展开详情</span>
+                </div>
+              </div>
+
+              <!-- 树形结构 - 深邃版本 -->
+              <div class="flex flex-col items-center">
+                <!-- 递归渲染树节点 -->
+                <template v-for="node in workflowData" :key="node.id">
+                  <div class="w-full flex flex-col items-center">
+                    <!-- 根节点 - 深邃设计 -->
+                    <div
+                      @click="toggleNode(node)"
+                      class="w-full max-w-lg cursor-pointer group"
+                    >
+                      <!-- 外层发光效果 -->
+                      <div
+                        class="relative p-1 rounded-2xl transition-all duration-500"
+                        :class="node.expanded ? 'opacity-100' : 'opacity-80 hover:opacity-100'"
+                      >
+                        <!-- 内层背景 -->
+                        <div
+                          class="relative bg-slate-800/70 backdrop-blur-xl border rounded-2xl p-5 overflow-hidden"
+                          :class="node.expanded ? `border-2 ${node.borderColor} shadow-lg shadow-${node.color.includes('green') ? 'green' : node.color.includes('orange') ? 'orange' : node.color.includes('purple') ? 'purple' : 'cyan'}-500/30` : 'border-slate-600/50'"
+                        >
+                          <!-- 背景光效 -->
+                          <div
+                            class="absolute inset-0 opacity-30 transition-opacity duration-500"
+                            :class="node.expanded ? 'opacity-100' : 'opacity-0'"
+                            :style="`background: linear-gradient(135deg, ${node.color.includes('green') ? 'rgba(34, 197, 94, 0.15)' : node.color.includes('orange') ? 'rgba(249, 115, 22, 0.15)' : node.color.includes('purple') ? 'rgba(168, 85, 247, 0.15)' : 'rgba(6, 182, 212, 0.15)'} 0%, transparent 100%);`"
+                          ></div>
+
+                          <!-- 网格纹理 -->
+                          <div class="absolute inset-0 opacity-10" style="background-image: linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px); background-size: 20px 20px;"></div>
+
+                          <!-- 主内容 -->
+                          <div class="relative flex items-center gap-4">
+                            <!-- 图标容器 - 多层设计 -->
+                            <div class="relative">
+                              <!-- 外层光晕 -->
+                              <div
+                                class="absolute inset-0 rounded-2xl blur-xl opacity-40 transition-all duration-500"
+                                :class="node.expanded ? 'scale-150 opacity-40' : 'scale-100 opacity-0'"
+                                :style="`background: ${node.color.includes('green') ? '#22c55e' : node.color.includes('orange') ? '#f97316' : node.color.includes('purple') ? '#a855f7' : '#06b6d4'};`"
+                              ></div>
+                              <!-- 图标框 -->
+                              <div
+                                class="relative w-16 h-16 rounded-2xl bg-gradient-to-br flex items-center justify-center border-2 backdrop-blur-sm"
+                                :class="[node.bgColor, node.borderColor]"
+                              >
+                                <i :class="['fa-solid', node.icon, node.color, 'text-2xl']"></i>
+                              </div>
+                              <!-- 状态指示点 -->
+                              <div
+                                class="absolute -bottom-1 -right-1 w-4 h-4 rounded-full border-2 border-slate-700 flex items-center justify-center"
+                                :class="node.status === 'completed' ? 'bg-green-500' : node.status === 'processing' ? 'bg-yellow-500' : 'bg-gray-500'"
+                              >
+                                <i v-if="node.status === 'completed'" class="fa-solid fa-check text-[8px] text-white"></i>
+                              </div>
+                            </div>
+
+                            <!-- 文字内容 -->
+                            <div class="flex-1">
+                              <div class="flex items-center gap-2 mb-1">
+                                <h4 class="text-white font-bold text-lg tracking-wide">{{ node.name }}</h4>
+                                <span
+                                  class="px-2.5 py-1 rounded-full text-xs font-semibold uppercase tracking-wider backdrop-blur-sm"
+                                  :class="[
+                                    node.status === 'completed' ? 'bg-green-500/30 text-green-400 border border-green-500/50' :
+                                    node.status === 'processing' ? 'bg-yellow-500/30 text-yellow-400 border border-yellow-500/50' :
+                                    'bg-slate-500/30 text-slate-300 border border-slate-500/50'
+                                  ]"
+                                >
+                                  {{ node.status === 'completed' ? '✓ 完成' : node.status === 'processing' ? '◐ 进行中' : '○ 待处理' }}
+                                </span>
+                              </div>
+                              <p class="text-slate-300 text-sm">{{ node.description }}</p>
+                              <!-- 底部信息 -->
+                              <div class="flex items-center gap-4 mt-2 text-xs text-slate-400">
+                                <span class="flex items-center gap-1">
+                                  <i class="fa-solid fa-layer-group"></i>
+                                  Level 1
+                                </span>
+                                <span class="flex items-center gap-1">
+                                  <i class="fa-solid fa-code-branch"></i>
+                                  {{ node.children?.length || 0 }} 个子任务
+                                </span>
+                              </div>
+                            </div>
+
+                            <!-- 展开箭头 -->
+                            <div
+                              v-if="node.children && node.children.length > 0"
+                              class="flex items-center justify-center w-8 h-8 rounded-lg bg-slate-700/50 border border-slate-600"
+                            >
+                              <i
+                                :class="['fa-solid fa-chevron-down text-slate-300 transition-transform duration-300', node.expanded ? 'rotate-180' : '']"
+                              ></i>
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+                    </div>
+
+                    <!-- 连接线 + 子节点 -->
+                    <div v-if="node.expanded && node.children" class="w-full flex flex-col items-center mt-1">
+                      <!-- 垂直连接线 - 复杂设计 -->
+                      <div class="relative flex flex-col items-center">
+                        <!-- 主线 -->
+                        <div class="w-0.5 h-8 bg-gradient-to-b from-green-500/40 to-purple-500/40"></div>
+                        <!-- 发光点 -->
+                        <div class="absolute top-1/2 w-2 h-2 rounded-full bg-cyan-400 shadow-lg shadow-cyan-400/40"></div>
+                      </div>
+
+                      <!-- 子节点容器 -->
+                      <div class="w-full flex justify-center gap-6">
+                        <div v-for="(child, idx) in node.children" :key="child.id" class="flex-1 flex flex-col items-center max-w-md">
+                          <!-- 水平连接线 -->
+                          <div class="w-full h-0.5 bg-gradient-to-r from-transparent via-purple-500/40 to-transparent mb-3"></div>
+
+                          <!-- 子节点 - 深邃设计 -->
+                          <div
+                            @click.stop="toggleNode(child)"
+                            class="w-full cursor-pointer group"
+                          >
+                            <div
+                              class="relative p-0.5 rounded-xl transition-all duration-300"
+                              :class="child.expanded ? 'opacity-100' : 'opacity-80 hover:opacity-100'"
+                            >
+                              <div
+                                class="relative bg-slate-800/60 backdrop-blur-xl border rounded-xl p-4"
+                                :class="child.expanded ? `border-2 ${child.borderColor}` : 'border-slate-600/50'"
+                              >
+                                <!-- 背景微光 -->
+                                <div
+                                  class="absolute inset-0 opacity-20 rounded-xl"
+                                  :style="`background: linear-gradient(135deg, ${child.color.includes('green') ? 'rgba(34, 197, 94, 0.2)' : child.color.includes('orange') ? 'rgba(249, 115, 22, 0.2)' : child.color.includes('yellow') ? 'rgba(234, 179, 8, 0.2)' : 'rgba(6, 182, 212, 0.2)'} 0%, transparent 100%);`"
+                                ></div>
+
+                                <div class="relative flex items-center gap-3">
+                                  <!-- 图标 -->
+                                  <div class="relative">
+                                    <div
+                                      class="w-12 h-12 rounded-xl bg-gradient-to-br flex items-center justify-center border"
+                                      :class="[child.bgColor, child.borderColor]"
+                                    >
+                                      <i :class="['fa-solid', child.icon, child.color, 'text-xl']"></i>
+                                    </div>
+                                    <!-- 序号标签 -->
+                                    <div class="absolute -top-2 -left-2 w-5 h-5 rounded-full bg-slate-700 border border-slate-500 flex items-center justify-center text-[10px] text-slate-300 font-bold">
+                                      {{ idx + 1 }}
+                                    </div>
+                                  </div>
+
+                                  <!-- 文字 -->
+                                  <div class="flex-1 min-w-0">
+                                    <div class="flex items-center gap-2 mb-0.5">
+                                      <h5 class="text-white font-semibold">{{ child.name }}</h5>
+                                      <span
+                                        v-if="child.children && child.children.length > 0"
+                                        class="px-1.5 py-0.5 rounded bg-slate-700 text-slate-300 text-xs"
+                                      >
+                                        {{ child.children.length }}
+                                      </span>
+                                    </div>
+                                    <p class="text-slate-400 text-xs truncate">{{ child.description }}</p>
+                                  </div>
+
+                                  <!-- 箭头 -->
+                                  <i
+                                    v-if="child.children && child.children.length > 0"
+                                    :class="['fa-solid fa-chevron-down text-slate-400 text-xs transition-transform duration-300', child.expanded ? 'rotate-180' : '']"
+                                  ></i>
+                                </div>
+                              </div>
+                            </div>
+
+                            <!-- 孙子节点 -->
+                            <div v-if="child.expanded && child.children" class="mt-2 ml-4 space-y-2">
+                              <div
+                                v-for="(grandchild, gidx) in child.children"
+                                :key="grandchild.id"
+                                class="relative pl-4 border-l-2 border-slate-600/50"
+                              >
+                                <!-- 连接点 -->
+                                <div class="absolute -left-1 top-1/2 -translate-y-1/2 w-2 h-2 rounded-full bg-slate-500"></div>
+
+                                <div class="flex items-center gap-3 p-2 rounded-lg bg-slate-700/30 hover:bg-slate-700/60 transition-colors cursor-pointer border border-transparent hover:border-slate-500">
+                                  <div
+                                    class="w-8 h-8 rounded-lg bg-gradient-to-br flex items-center justify-center border"
+                                    :class="[grandchild.bgColor, grandchild.borderColor]"
+                                  >
+                                    <i :class="['fa-solid', grandchild.icon, grandchild.color, 'text-sm']"></i>
+                                  </div>
+                                  <div class="flex-1 min-w-0">
+                                    <h6 class="text-white font-medium text-sm">{{ grandchild.name }}</h6>
+                                    <p class="text-slate-400 text-xs truncate">{{ grandchild.description }}</p>
+                                  </div>
+                                </div>
+                              </div>
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+                    </div>
+                  </div>
+                </template>
+              </div>
+            </div>
 
             <!-- 底部提示 -->
-            <div v-show="isGraphGenerated" class="absolute bottom-4 left-1/2 -translate-x-1/2 bg-dark-700/80 backdrop-blur-sm border border-dark-500/50 rounded-lg px-4 py-2 text-xs text-gray-400 shadow-lg">
-              <i class="fa-solid fa-info-circle mr-1 text-primary-cyan"></i>
-              拖拽节点 · 滚轮缩放 · 点击查看详情
+            <div v-show="isGraphGenerated" class="absolute bottom-4 left-1/2 -translate-x-1/2 bg-slate-800/80 backdrop-blur-sm border border-slate-600/50 rounded-lg px-4 py-2 text-xs text-slate-300 shadow-lg">
+              <i class="fa-solid fa-sitemap mr-1 text-primary-cyan"></i>
+              金字塔结构 · 4层执行流程 · 点击展开
             </div>
           </div>
 
diff --git a/web/src/views/ModelAPIs.vue b/web/src/views/ModelAPIs.vue
index bc6bfc9..aa83009 100644
--- a/web/src/views/ModelAPIs.vue
+++ b/web/src/views/ModelAPIs.vue
@@ -211,7 +211,7 @@ const providerIcon = (provider: string) => {
     </div>
 
     <Teleport to="body">
-      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50" @click.self="cancelEdit">
+      <div v-if="isEditing" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50">
         <div class="bg-dark-700 rounded-2xl w-full max-w-lg border border-dark-500 shadow-2xl">
           <div class="flex items-center justify-between p-5 border-b border-dark-500">
             <h3 class="text-lg font-semibold">Edit Model API</h3>