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/agent/adapter.ts

@@ -76,16 +76,6 @@ interface PermissionManager {
   setAskCallback(callback: (ctx: unknown) => Promise<{ allow: boolean; remember?: boolean }>): void;
 }
 
-/**
- * Summary 配置接口
- */
-export interface SummaryConfig {
-  provider: string;
-  apiKey: string;
-  model: string;
-  baseUrl?: string;
-}
-
 /**
  * Core 模块接口
  */
@@ -94,7 +84,6 @@ interface CoreModule {
   toolRegistry: ToolRegistry;
   loadConfig: () => unknown;
   saveConfig: (config: Record<string, unknown>) => void;
-  loadSummaryConfig: () => SummaryConfig | null;
   getPermissionManager: (projectRoot?: string) => PermissionManager;
 }
 
@@ -443,71 +432,3 @@ export async function compressContext(
   }
 }
 
-// ============================================================================
-// 摘要配置 API
-// ============================================================================
-
-/**
- * 摘要配置（不含 API Key 明文）
- */
-export interface SummaryConfigInfo {
-  provider?: string;
-  model?: string;
-  hasApiKey: boolean;
-  baseUrl?: string;
-}
-
-/**
- * 获取摘要配置
- */
-export function getSummaryConfig(): SummaryConfigInfo | null {
-  if (!coreModule) {
-    return null;
-  }
-
-  const config = coreModule.loadSummaryConfig();
-  if (!config) {
-    return {
-      hasApiKey: false,
-    };
-  }
-
-  return {
-    provider: config.provider,
-    model: config.model,
-    hasApiKey: !!config.apiKey,
-    baseUrl: config.baseUrl,
-  };
-}
-
-/**
- * 更新摘要配置
- */
-export function updateSummaryConfig(config: {
-  provider?: string;
-  model?: string;
-  apiKey?: string;
-  baseUrl?: string;
-}): boolean {
-  if (!coreModule) {
-    return false;
-  }
-
-  // 构建要保存的配置
-  const saveData: Record<string, unknown> = {};
-  if (config.provider !== undefined) {
-    saveData.summaryProvider = config.provider;
-  }
-  if (config.model !== undefined) {
-    saveData.summaryModel = config.model;
-  }
-  if (config.apiKey !== undefined) {
-    saveData.summaryApiKey = config.apiKey;
-  }
-  if (config.baseUrl !== undefined) {
-    saveData.summaryBaseUrl = config.baseUrl;
-  }
-
-  coreModule.saveConfig(saveData);
-  return true;
-}