feat(outlook): 添加Outlook集成功能支持

添加完整的Outlook MCP集成，包括邮件和日历功能，通过AuthZ模式进行认证和权限管理，
支持邮箱连接、断开、状态检查和数据同步等功能。

fix(config): 统一配置文件路径从.nanobot到.beaver

将配置文件路径从/root/.nanobot统一更改为/root/.beaver，更新Dockerfile中的环境变量定义，
确保所有组件使用一致的配置目录结构。

feat(agent): 添加代理删除功能和助手身份提示

为代理注册表添加delete_agent方法，实现代理的动态删除功能；同时添加海狸助手身份提示，
确保AI助手在交互中保持一致的身份认知。

feat(engine): 增强引擎循环并添加意图决策快照

扩展AgentLoop类，添加intent_agent_decision参数用于意图驱动的代理决策，并在会话中记录
决策快照，便于后续分析和调试。

feat(authz): 扩展认证客户端功能

为AuthzClient添加设置权限、用户注册、后端注册和Outlook设置管理等新方法，增强系统
的认证和授权能力。

app-instance/backend/beaver/integrations/authz/client.py

@@ -48,3 +48,64 @@ class AuthzClient:
     async def get_permissions(self, backend_id: str) -> dict[str, Any]:
         data = await self._request("GET", f"/backends/{backend_id}/permissions")
         return data if isinstance(data, dict) else {}
+
+    async def set_permissions(self, backend_id: str, payload: dict[str, Any]) -> dict[str, Any]:
+        data = await self._request("POST", f"/backends/{backend_id}/permissions", json_body=payload)
+        return data if isinstance(data, dict) else {}
+
+    async def register_user(
+        self,
+        *,
+        username: str,
+        password: str,
+        email: str | None = None,
+        backend_name: str | None = None,
+        backend_id: str | None = None,
+        base_url: str | None = None,
+        frontend_base_url: str | None = None,
+    ) -> dict[str, Any]:
+        payload: dict[str, Any] = {
+            "username": username,
+            "password": password,
+        }
+        optional = {
+            "email": email,
+            "backend_name": backend_name,
+            "backend_id": backend_id,
+            "base_url": base_url,
+            "frontend_base_url": frontend_base_url,
+        }
+        payload.update({key: value for key, value in optional.items() if value})
+        data = await self._request("POST", "/oauth/register", json_body=payload)
+        return data if isinstance(data, dict) else {}
+
+    async def register_backend(
+        self,
+        *,
+        name: str,
+        base_url: str,
+        frontend_base_url: str | None = None,
+        backend_id: str | None = None,
+    ) -> dict[str, Any]:
+        payload: dict[str, Any] = {
+            "name": name,
+            "base_url": base_url,
+        }
+        if frontend_base_url:
+            payload["frontend_base_url"] = frontend_base_url
+        if backend_id:
+            payload["backend_id"] = backend_id
+        data = await self._request("POST", "/backends/register", json_body=payload)
+        return data if isinstance(data, dict) else {}
+
+    async def get_outlook_settings(self, backend_id: str) -> dict[str, Any]:
+        data = await self._request("GET", f"/backends/{backend_id}/settings/outlook")
+        return data if isinstance(data, dict) else {}
+
+    async def set_outlook_settings(self, backend_id: str, payload: dict[str, Any]) -> dict[str, Any]:
+        data = await self._request("POST", f"/backends/{backend_id}/settings/outlook", json_body=payload)
+        return data if isinstance(data, dict) else {}
+
+    async def delete_outlook_settings(self, backend_id: str) -> dict[str, Any]:
+        data = await self._request("DELETE", f"/backends/{backend_id}/settings/outlook")
+        return data if isinstance(data, dict) else {}