feat: 新增 core/agents 模块和 nanobot

- 新增 agents 模块，包含 agent、api、skills 等子模块
- 新增 nanobot 项目，支持多渠道集成
- 添加启动脚本 start-all.bat 和 start-all.sh

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

core/agents/tools/manager.py

@@ -0,0 +1,108 @@
+"""Tool manager for loading and managing tools."""
+
+import logging
+from pathlib import Path
+from typing import Any
+
+from nanobot.agent.tools.registry import ToolRegistry
+
+from agents.tools.builtin import get_builtin_tools
+
+logger = logging.getLogger(__name__)
+
+
+class ToolManager:
+    """Manages tools for the agent."""
+
+    def __init__(self, workspace: Path | None = None):
+        """Initialize tool manager.
+
+        Args:
+            workspace: Optional workspace path
+        """
+        self.workspace = workspace
+        self.registry = ToolRegistry()
+        self._load_builtin_tools()
+
+    def _load_builtin_tools(self) -> None:
+        """Load all built-in tools."""
+        tools = get_builtin_tools(self.workspace)
+        for tool in tools:
+            self.registry.register(tool)
+        logger.info(f"Loaded {len(tools)} built-in tools")
+
+    def register_tool(self, tool: Any) -> None:
+        """Register a custom tool.
+
+        Args:
+            tool: Tool instance to register
+        """
+        self.registry.register(tool)
+        logger.info(f"Registered tool: {tool.name}")
+
+    def unregister_tool(self, name: str) -> None:
+        """Unregister a tool.
+
+        Args:
+            name: Tool name to unregister
+        """
+        self.registry.unregister(name)
+        logger.info(f"Unregistered tool: {name}")
+
+    def get_tool(self, name: str) -> Any:
+        """Get a tool by name.
+
+        Args:
+            name: Tool name
+
+        Returns:
+            Tool instance or None
+        """
+        return self.registry.get(name)
+
+    def has_tool(self, name: str) -> bool:
+        """Check if a tool is registered.
+
+        Args:
+            name: Tool name
+
+        Returns:
+            True if tool exists
+        """
+        return self.registry.has(name)
+
+    def list_tools(self) -> list[str]:
+        """List all registered tool names.
+
+        Returns:
+            List of tool names
+        """
+        return self.registry.tool_names
+
+    def get_tool_definitions(self) -> list[dict[str, Any]]:
+        """Get all tool definitions in OpenAI format.
+
+        Returns:
+            List of tool schemas
+        """
+        return self.registry.get_definitions()
+
+    async def execute_tool(self, name: str, params: dict[str, Any]) -> str:
+        """Execute a tool by name.
+
+        Args:
+            name: Tool name
+            params: Tool parameters
+
+        Returns:
+            Tool execution result
+        """
+        return await self.registry.execute(name, params)
+
+    def __len__(self) -> int:
+        """Get number of registered tools."""
+        return len(self.registry)
+
+    def __contains__(self, name: str) -> bool:
+        """Check if tool is registered."""
+        return name in self.registry