refactor: 移除多余依赖，统一 MUI 为唯一 UI 库

- 移除 radix-ui、clsx、tailwind-merge、class-variance-authority、react-router-dom

- 前后端全面适配 MUI 组件，清理残留 Tailwind 工具类引用

- 优化 Agent Loop 引擎、IPC 处理器、Provider Adapter 等后端模块

- 新增 Agent 网络工具通用设计文档 v2

electron/harness/types/metona-response.ts

@@ -83,6 +83,7 @@ export enum MetonaStreamEventType {
   REASONING_DELTA = 'reasoning_delta',
   TOOL_CALL_DELTA = 'tool_call_delta',
   TOOL_CALL_COMPLETE = 'tool_call_complete',
+  TOOL_RESULT = 'tool_result',
   THINKING_START = 'thinking_start',
   THINKING_END = 'thinking_end',
   ERROR = 'error',
@@ -116,6 +117,9 @@ export interface MetonaStreamEvent {
   /** TOOL_CALL_COMPLETE（拼接完成后的完整调用） */
   toolCall?: MetonaToolCall;
 
+  /** TOOL_RESULT */
+  toolResult?: MetonaToolResult;
+
   /** USAGE */
   usage?: MetonaTokenUsage;