refactor(agent): 将 Summary Model 改造为内置 Sub Agent

- 扩展 AgentMode 类型添加 'internal' 模式
- 新增 summary agent preset (claude-3-5-haiku)
- AgentRegistry 添加 getInternal/listInternalAgents 方法
- CompressionManager 添加 setSummaryModelFromAgentConfig
- Agent 构造函数改用 Registry 配置初始化 Summary 模型
- 清理旧的 SummaryConfig 配置系统
- UI AgentsPanel 分离显示 System/Preset/Custom agents
- UI AgentEditor 为 internal agent 显示简化编辑界面

packages/server/src/routes/config.ts

@@ -5,11 +5,6 @@
  */
 
 import { Hono } from 'hono';
-import {
-  getSummaryConfig,
-  updateSummaryConfig,
-  type SummaryConfigInfo,
-} from '../agent/adapter.js';
 
 export const configRouter = new Hono();
 
@@ -102,70 +97,3 @@ export function getConfig(): ServerConfig {
 export function setConfig(config: Partial<ServerConfig>): void {
   serverConfig = { ...serverConfig, ...config };
 }
-
-// ============================================================================
-// 摘要配置 API
-// ============================================================================
-
-/**
- * GET /config/summary - 获取摘要模型配置
- */
-configRouter.get('/summary', (c) => {
-  const config = getSummaryConfig();
-
-  if (!config) {
-    // Core 模块不可用
-    return c.json({
-      success: true,
-      data: {
-        hasApiKey: false,
-      } as SummaryConfigInfo,
-    });
-  }
-
-  return c.json({
-    success: true,
-    data: config,
-  });
-});
-
-/**
- * PUT /config/summary - 更新摘要模型配置
- */
-configRouter.put('/summary', async (c) => {
-  try {
-    const body = await c.req.json();
-
-    const success = updateSummaryConfig({
-      provider: body.provider,
-      model: body.model,
-      apiKey: body.apiKey,
-      baseUrl: body.baseUrl,
-    });
-
-    if (!success) {
-      return c.json(
-        {
-          success: false,
-          error: 'Core module not available',
-        },
-        500
-      );
-    }
-
-    // 返回更新后的配置（不含 API Key）
-    const config = getSummaryConfig();
-    return c.json({
-      success: true,
-      data: config,
-    });
-  } catch (error) {
-    return c.json(
-      {
-        success: false,
-        error: error instanceof Error ? error.message : 'Invalid input',
-      },
-      400
-    );
-  }
-});