refactor(settings): 移除无效的配置项

- 移除 maxTokens/temperature 滑块（后端从不使用）
- 移除 allowedPaths/deniedPaths 显示（权限通过 handler 处理）
- Settings 面板只保留 workdir 和 Summary Model 配置

packages/server/src/routes/config.ts

@@ -13,23 +13,13 @@ import {
 
 export const configRouter = new Hono();
 
-// 服务器配置 (后续会从配置文件加载)
+// 服务器配置
 interface ServerConfig {
-  model: string;
-  maxTokens: number;
-  temperature: number;
   workdir: string;
-  allowedPaths: string[];
-  deniedPaths: string[];
 }
 
 let serverConfig: ServerConfig = {
-  model: 'claude-sonnet-4-20250514',
-  maxTokens: 8192,
-  temperature: 0.7,
   workdir: process.cwd(),
-  allowedPaths: [],
-  deniedPaths: [],
 };
 
 /**