feat(desktop): 集成 ServicesPanel 外部服务配置面板

- 添加 External Services 菜单入口
- 同步窗口权限配置到 capabilities schema

.gitignore

@@ -45,6 +45,11 @@ packages/desktop/src-tauri/Cargo.lock
 *.temp
 .cache/
 
+# Generated files
+packages/core/src/tools/descriptions.generated.ts
+packages/server/src/embedded-assets.generated.ts
+packages/server/src/embedded-wasm.generated.ts
+
 # AI Open reference code
 ai-open/
 

package.json

@@ -41,7 +41,9 @@
 
     "website:build": "pnpm --filter @ai-assistant/website build",
     "website:dev": "pnpm --filter @ai-assistant/website dev",
-    "website:preview": "pnpm --filter @ai-assistant/website preview"
+    "website:preview": "pnpm --filter @ai-assistant/website preview",
+
+    "build:standalone": "bun run scripts/build-standalone.ts"
   },
   "keywords": [
     "ai",

packages/core/package.json

@@ -40,7 +40,8 @@
     }
   },
   "scripts": {
-    "build": "tsc && cp -r src/tools/descriptions dist/tools/",
+    "prebuild": "bun run scripts/generate-descriptions.ts",
+    "build": "tsc",
     "dev": "tsc --watch",
     "test": "vitest run",
     "test:watch": "vitest",

packages/core/scripts/generate-descriptions.ts

@@ -0,0 +1,89 @@
+#!/usr/bin/env bun
+/**
+ * Generate Tool Descriptions
+ *
+ * 将 descriptions 目录下的 .txt 文件转换为 TypeScript 模块
+ * 用于 Bun 打包时内联工具描述
+ */
+
+import * as fs from 'fs';
+import * as path from 'path';
+
+const DESCRIPTIONS_DIR = path.join(__dirname, '../src/tools/descriptions');
+const OUTPUT_FILE = path.join(__dirname, '../src/tools/descriptions.generated.ts');
+
+interface DescriptionEntry {
+  category: string;
+  name: string;
+  content: string;
+}
+
+function collectDescriptions(): DescriptionEntry[] {
+  const entries: DescriptionEntry[] = [];
+
+  const categories = fs.readdirSync(DESCRIPTIONS_DIR);
+  for (const category of categories) {
+    const categoryPath = path.join(DESCRIPTIONS_DIR, category);
+    const stat = fs.statSync(categoryPath);
+
+    if (stat.isDirectory()) {
+      const files = fs.readdirSync(categoryPath);
+      for (const file of files) {
+        if (file.endsWith('.txt')) {
+          const name = file.replace('.txt', '');
+          const content = fs.readFileSync(path.join(categoryPath, file), 'utf-8').trim();
+          entries.push({ category, name, content });
+        }
+      }
+    } else if (category.endsWith('.txt')) {
+      const name = category.replace('.txt', '');
+      const content = fs.readFileSync(categoryPath, 'utf-8').trim();
+      entries.push({ category: '', name, content });
+    }
+  }
+
+  return entries;
+}
+
+function escapeString(str: string): string {
+  return str
+    .replace(/\\/g, '\\\\')
+    .replace(/`/g, '\\`')
+    .replace(/\$/g, '\\$');
+}
+
+function generateCode(entries: DescriptionEntry[]): string {
+  const lines: string[] = [
+    '// Auto-generated by scripts/generate-descriptions.ts',
+    '// Do not edit manually',
+    '',
+    'export const TOOL_DESCRIPTIONS: Record<string, string> = {',
+  ];
+
+  for (const entry of entries) {
+    const escapedContent = escapeString(entry.content);
+    lines.push(`  '${entry.name}': \`${escapedContent}\`,`);
+    lines.push('');
+  }
+
+  lines.push('};');
+  lines.push('');
+
+  return lines.join('\n');
+}
+
+function main() {
+  console.log('Collecting tool descriptions...');
+  const entries = collectDescriptions();
+  console.log(`Found ${entries.length} descriptions`);
+
+  console.log('Generating TypeScript code...');
+  const code = generateCode(entries);
+
+  console.log(`Writing to ${OUTPUT_FILE}...`);
+  fs.writeFileSync(OUTPUT_FILE, code, 'utf-8');
+
+  console.log('Done!');
+}
+
+main();

packages/core/src/agent/executor.ts

@@ -6,7 +6,7 @@ import {
   type Tool as AITool,
   type LanguageModel,
 } from 'ai';
-import type { Tool, ToolResult, AgentConfig, ContentBlock } from '../types/index.js';
+import type { Tool, ToolResult, AgentConfig, ContentBlock, TokenUsageInfo } from '../types/index.js';
 import { buildZodSchema } from '../types/index.js';
 import { ToolRegistry } from '../tools/registry.js';
 import type {
@@ -95,6 +95,7 @@ export class AgentExecutor {
 
     let fullResponse = '';
     let steps = 0;
+    let usage: TokenUsageInfo | undefined;
 
     // 工具调用时间追踪（用于计算持续时间）
     const toolStartTimes = new Map<string, number>();
@@ -200,7 +201,9 @@ export class AgentExecutor {
           }
         }
 
-        await result.response;
+        const response = await result.response;
+        // 提取 usage 信息
+        usage = this.extractUsage(response);
       } else {
         // 非流式模式
         const result = await generateText({
@@ -214,6 +217,8 @@ export class AgentExecutor {
 
         fullResponse = result.text;
         steps = result.steps.length;
+        // 提取 usage 信息
+        usage = this.extractUsage(result.response);
       }
 
       return {
@@ -221,6 +226,7 @@ export class AgentExecutor {
         text: fullResponse,
         steps,
         sessionId: context.parentSessionId ?? 'standalone',
+        usage,
       };
     } catch (error) {
       const errorMessage = error instanceof Error ? error.message : String(error);
@@ -416,4 +422,27 @@ export class AgentExecutor {
 
     return blocks;
   }
+
+  /**
+   * 从 AI SDK 响应中提取 usage 信息
+   */
+  private extractUsage(response: unknown): TokenUsageInfo | undefined {
+    // AI SDK 的 response 对象包含 usage 字段
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const resp = response as any;
+    const usage = resp?.usage;
+
+    if (!usage) {
+      return undefined;
+    }
+
+    return {
+      promptTokens: usage.promptTokens ?? 0,
+      completionTokens: usage.completionTokens ?? 0,
+      totalTokens: usage.totalTokens ?? (usage.promptTokens ?? 0) + (usage.completionTokens ?? 0),
+      // Anthropic API 特有的缓存字段
+      cacheReadInputTokens: usage.cacheReadInputTokens,
+      cacheCreationInputTokens: usage.cacheCreationInputTokens,
+    };
+  }
 }

packages/core/src/agent/types.ts

@@ -1,4 +1,4 @@
-import type { ProviderType } from '../types/index.js';
+import type { ProviderType, TokenUsageInfo } from '../types/index.js';
 import type { PermissionAction, PermissionRule } from '../permission/types.js';
 
 // 重新导出权限类型，方便外部使用
@@ -196,4 +196,6 @@ export interface AgentExecutionResult {
   sessionId: string;
   /** 错误信息 */
   error?: string;
+  /** Token 使用统计 */
+  usage?: TokenUsageInfo;
 }

packages/core/src/core/agent-message-handler.ts

@@ -11,7 +11,7 @@ import {
   type Tool as AITool,
   type LanguageModel,
 } from 'ai';
-import type { ToolResult, UserInput, ContentBlock, ChatResult } from '../types/index.js';
+import type { ToolResult, UserInput, ContentBlock, ChatResult, TokenUsageInfo } from '../types/index.js';
 import {
   CompressionManager,
   CompressionStatus,
@@ -188,6 +188,18 @@ export class AgentMessageHandler {
 
       const response = await result.response;
       responseMessages = response.messages as ModelMessage[];
+
+      // 提取 usage 信息
+      const usage = this.extractUsage(response);
+
+      // 将完整的响应消息添加到历史
+      this.conversationHistory.push(...responseMessages);
+
+      return {
+        text: fullResponse,
+        messages: responseMessages,
+        usage,
+      };
     } catch (error) {
       if (error instanceof Error && (error.name === 'AbortError' || abortSignal?.aborted)) {
         onStream?.('\n[已取消]\n');
@@ -201,14 +213,6 @@ export class AgentMessageHandler {
       }
       throw error;
     }
-
-    // 将完整的响应消息添加到历史
-    this.conversationHistory.push(...responseMessages);
-
-    return {
-      text: fullResponse,
-      messages: responseMessages,
-    };
   }
 
   /**
@@ -320,12 +324,39 @@ export class AgentMessageHandler {
     const fullResponse = result.text;
     const responseMessages = result.response.messages as ModelMessage[];
 
+    // 提取 usage 信息
+    const usage = this.extractUsage(result.response);
+
     // 将完整的响应消息添加到历史
     this.conversationHistory.push(...responseMessages);
 
     return {
       text: fullResponse,
       messages: responseMessages,
+      usage,
+    };
+  }
+
+  /**
+   * 从 AI SDK 响应中提取 usage 信息
+   */
+  private extractUsage(response: unknown): TokenUsageInfo | undefined {
+    // AI SDK 的 response 对象包含 usage 字段
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const resp = response as any;
+    const usage = resp?.usage;
+
+    if (!usage) {
+      return undefined;
+    }
+
+    return {
+      promptTokens: usage.promptTokens ?? 0,
+      completionTokens: usage.completionTokens ?? 0,
+      totalTokens: usage.totalTokens ?? (usage.promptTokens ?? 0) + (usage.completionTokens ?? 0),
+      // Anthropic API 特有的缓存字段
+      cacheReadInputTokens: usage.cacheReadInputTokens,
+      cacheCreationInputTokens: usage.cacheCreationInputTokens,
     };
   }
 

packages/core/src/core/agent.ts

@@ -4,9 +4,9 @@
  */
 
 import type { LanguageModel } from 'ai';
-import type { Tool, AgentConfig, UserInput, Message, ChatResult } from '../types/index.js';
+import type { Tool, AgentConfig, UserInput, Message, ChatResult, TokenUsageInfo } from '../types/index.js';
 import { ToolRegistry } from '../tools/registry.js';
-import { SessionManager } from '../session/index.js';
+import { SessionManager, tokenStatsManager } from '../session/index.js';
 import {
   CompressionManager,
   type TokenUsage,
@@ -256,6 +256,18 @@ export class Agent {
       );
     }
 
+    // 更新 Token 统计
+    if (result.usage && this.sessionManager) {
+      const session = this.sessionManager.getSession();
+      if (session) {
+        await tokenStatsManager.updateSessionStats(
+          session.projectId,
+          session.id,
+          result.usage
+        );
+      }
+    }
+
     // 自动压缩
     await this.messageHandler.autoCompress(onStream);
 

packages/core/src/index.ts

@@ -29,8 +29,8 @@ export type {
   DetailedCompressionResult,
 } from './context/index.js';
 // Session - 新的三层存储结构
-export { SessionManager } from './session/index.js';
-export type { SessionData, SessionSummary, ProjectMetadata } from './session/index.js';
+export { SessionManager, tokenStatsManager, TokenStatsManager } from './session/index.js';
+export type { SessionData, SessionSummary, ProjectMetadata, SessionTokenStats, ProjectStats } from './session/index.js';
 
 // Session Storage API
 export {
@@ -354,6 +354,9 @@ export type {
   FileSearchOptions,
 } from './file-index/index.js';
 
+// RepoMap WASM 加载器（用于 standalone 构建）
+export { setEmbeddedWasm, hasEmbeddedWasm } from './repomap/index.js';
+
 // Constants - 统一存储路径
 export {
   APP_DIR_NAME,

packages/core/src/permission/bash-parser.ts

@@ -1,29 +1,41 @@
-import { Parser, Language, type Node } from 'web-tree-sitter';
 import * as path from 'path';
 import { fileURLToPath } from 'url';
+import { hasEmbeddedWasm, getEmbeddedWasm } from '../repomap/tags/wasm-loader.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
 // 解析后的命令结构
 export interface ParsedCommand {
-  name: string;        // 命令名，如 "git"
+  name: string; // 命令名，如 "git"
   subcommand?: string; // 子命令，如 "push"
-  args: string[];      // 参数列表
-  text: string;        // 原始命令文本
+  args: string[]; // 参数列表
+  text: string; // 原始命令文本
 }
 
 // 解析结果
 export interface ParseResult {
-  commands: ParsedCommand[];  // 所有解析出的命令
+  commands: ParsedCommand[]; // 所有解析出的命令
   success: boolean;
   error?: string;
 }
 
-// 单例解析器
-let parserInstance: Parser | null = null;
-let bashLanguage: Language | null = null;
+// Tree-sitter 类型
+interface TreeSitterNode {
+  type: string;
+  text: string;
+  childCount: number;
+  child(index: number): TreeSitterNode | null;
+}
+
+// 单例解析器 (使用 any 类型避免与 web-tree-sitter 的类型冲突)
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let parserInstance: any = null;
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let bashLanguage: any = null;
 let initPromise: Promise<void> | null = null;
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let TreeSitter: any = null;
 
 /**
  * 获取 wasm 文件路径
@@ -55,19 +67,51 @@ async function initParser(): Promise<void> {
 
   initPromise = (async () => {
     try {
-      // 初始化 tree-sitter
-      await Parser.init({
-        locateFile: (scriptName: string) => {
-          return getWasmPath(scriptName);
-        },
-      });
+      // 动态导入 web-tree-sitter
+      TreeSitter = await import('web-tree-sitter');
+
+      // 检查是否有嵌入的 WASM
+      if (hasEmbeddedWasm()) {
+        const wasmData = getEmbeddedWasm('tree-sitter.wasm');
+        if (wasmData) {
+          // 使用嵌入的 WASM 数据初始化
+          await TreeSitter.Parser.init({
+            wasmBinary: wasmData,
+          });
+        } else {
+          // 回退到文件系统
+          await TreeSitter.Parser.init({
+            locateFile: (scriptName: string) => {
+              return getWasmPath(scriptName);
+            },
+          });
+        }
+      } else {
+        // 使用文件系统加载
+        await TreeSitter.Parser.init({
+          locateFile: (scriptName: string) => {
+            return getWasmPath(scriptName);
+          },
+        });
+      }
 
       // 创建解析器实例
-      parserInstance = new Parser();
+      parserInstance = new TreeSitter.Parser();
 
       // 加载 bash 语言
-      const bashWasmPath = getWasmPath('tree-sitter-bash.wasm');
-      bashLanguage = await Language.load(bashWasmPath);
+      if (hasEmbeddedWasm()) {
+        const bashWasmData = getEmbeddedWasm('tree-sitter-bash.wasm');
+        if (bashWasmData) {
+          bashLanguage = await TreeSitter.Parser.Language.load(bashWasmData);
+        } else {
+          const bashWasmPath = getWasmPath('tree-sitter-bash.wasm');
+          bashLanguage = await TreeSitter.Parser.Language.load(bashWasmPath);
+        }
+      } else {
+        const bashWasmPath = getWasmPath('tree-sitter-bash.wasm');
+        bashLanguage = await TreeSitter.Parser.Language.load(bashWasmPath);
+      }
+
       parserInstance.setLanguage(bashLanguage);
     } catch (error) {
       initPromise = null;
@@ -81,7 +125,7 @@ async function initParser(): Promise<void> {
 /**
  * 从语法树节点中提取命令信息
  */
-function extractCommandFromNode(node: Node): ParsedCommand {
+function extractCommandFromNode(node: TreeSitterNode): ParsedCommand {
   const parts: string[] = [];
 
   for (let i = 0; i < node.childCount; i++) {
@@ -101,8 +145,10 @@ function extractCommandFromNode(node: Node): ParsedCommand {
       // 对于字符串类型，提取内部文本（去掉引号）
       if (child.type === 'string' || child.type === 'raw_string') {
         const text = child.text;
-        if ((text.startsWith('"') && text.endsWith('"')) ||
-            (text.startsWith("'") && text.endsWith("'"))) {
+        if (
+          (text.startsWith('"') && text.endsWith('"')) ||
+          (text.startsWith("'") && text.endsWith("'"))
+        ) {
           parts.push(text.slice(1, -1));
         } else {
           parts.push(text);
@@ -138,8 +184,8 @@ function extractCommandFromNode(node: Node): ParsedCommand {
 /**
  * 递归查找所有命令节点
  */
-function findCommandNodes(node: Node): Node[] {
-  const commands: Node[] = [];
+function findCommandNodes(node: TreeSitterNode): TreeSitterNode[] {
+  const commands: TreeSitterNode[] = [];
 
   if (node.type === 'command') {
     commands.push(node);

packages/core/src/provider/builtin/anthropic.ts

@@ -10,7 +10,6 @@ export const anthropicProvider: ProviderInfo = {
   name: 'Anthropic',
   description: 'Claude AI models by Anthropic',
   builtin: true,
-  apiKeyEnvVar: 'ANTHROPIC_API_KEY',
   models: [
     {
       id: 'claude-sonnet-4-20250514',

packages/core/src/provider/builtin/deepseek.ts

@@ -10,7 +10,6 @@ export const deepseekProvider: ProviderInfo = {
   name: 'DeepSeek',
   description: 'DeepSeek AI models',
   builtin: true,
-  apiKeyEnvVar: 'DEEPSEEK_API_KEY',
   models: [
     {
       id: 'deepseek-chat',

packages/core/src/provider/builtin/openai.ts

@@ -11,7 +11,6 @@ export const openaiProvider: ProviderInfo = {
   name: 'OpenAI',
   description: 'GPT models by OpenAI (also supports OpenAI-compatible APIs)',
   builtin: true,
-  apiKeyEnvVar: 'OPENAI_API_KEY',
   models: [
     {
       id: 'gpt-4o',

packages/core/src/provider/registry.ts

@@ -168,7 +168,6 @@ export class ProviderRegistry {
       description: provider.info.description,
       builtin: provider.info.builtin,
       baseUrl: config?.baseUrl ?? provider.info.baseUrl,
-      apiKeyEnvVar: provider.info.apiKeyEnvVar,
       models: provider.info.models,
       allowCustomModels: provider.info.allowCustomModels ?? false,
       config: {
@@ -200,7 +199,6 @@ export class ProviderRegistry {
       description: definition.description,
       builtin: false,
       baseUrl: definition.baseUrl,
-      apiKeyEnvVar: definition.apiKeyEnvVar,
       models: definition.models ?? [],
       allowCustomModels: definition.allowCustomModels ?? true,
     };

packages/core/src/provider/types.ts

@@ -48,8 +48,6 @@ export interface ProviderInfo {
   builtin: boolean;
   /** API 基础 URL */
   baseUrl?: string;
-  /** API Key 环境变量名 */
-  apiKeyEnvVar?: string;
   /** 可用模型列表 */
   models: ModelInfo[];
   /** 是否允许自定义模型 */
@@ -60,10 +58,8 @@ export interface ProviderInfo {
 export interface ProviderConfig {
   /** 提供商 ID */
   id: string;
-  /** API Key（直接存储，不推荐） */
+  /** API Key */
   apiKey?: string;
-  /** API Key 环境变量名 */
-  apiKeyEnvVar?: string;
   /** 自定义 Base URL */
   baseUrl?: string;
   /** 是否启用 */
@@ -82,8 +78,6 @@ export interface CustomProviderDefinition {
   description?: string;
   /** API 基础 URL（必填） */
   baseUrl: string;
-  /** API Key 环境变量名 */
-  apiKeyEnvVar?: string;
   /** 可用模型列表 */
   models?: ModelInfo[];
   /** 是否允许自定义模型 */
@@ -157,7 +151,6 @@ export interface ProviderDetail {
   description?: string;
   builtin: boolean;
   baseUrl?: string;
-  apiKeyEnvVar?: string;
   models: ModelInfo[];
   allowCustomModels: boolean;
   config?: {

packages/core/src/repomap/index.ts

@@ -11,6 +11,9 @@ export { RepoMap, createRepoMap } from './repomap.js';
 // Tag 提取
 export { TagExtractor } from './tags/index.js';
 
+// WASM 加载器（用于 standalone 构建）
+export { setEmbeddedWasm, hasEmbeddedWasm } from './tags/wasm-loader.js';
+
 // PageRank 排序
 export {
   Graph,

packages/core/src/repomap/tags/extractor.ts

@@ -8,6 +8,7 @@ import * as path from 'path';
 import { fileURLToPath } from 'url';
 import type { Tag } from '../types.js';
 import { getLanguageFromFilename } from '../types.js';
+import { hasEmbeddedWasm, getEmbeddedWasm } from './wasm-loader.js';
 
 // Tree-sitter 类型（web-tree-sitter）
 interface TreeSitterParser {
@@ -56,8 +57,25 @@ async function initTreeSitter(): Promise<void> {
 
   try {
     const TreeSitter = await import('web-tree-sitter');
-    // Parser 是命名导出的类，init 是其静态方法
-    await TreeSitter.Parser.init();
+
+    // 检查是否有嵌入的 WASM
+    if (hasEmbeddedWasm()) {
+      const wasmData = getEmbeddedWasm('tree-sitter.wasm');
+      if (wasmData) {
+        // 使用嵌入的 WASM 数据直接初始化
+        // web-tree-sitter 支持传入 WebAssembly.Module 或 ArrayBuffer
+        await TreeSitter.Parser.init({
+          // 传入 WASM 二进制数据
+          wasmBinary: wasmData,
+        });
+      } else {
+        await TreeSitter.Parser.init();
+      }
+    } else {
+      // 使用默认行为（从 node_modules 加载）
+      await TreeSitter.Parser.init();
+    }
+
     ParserClass = TreeSitter.Parser;
     treeSitterInitialized = true;
   } catch (error) {
@@ -215,7 +233,19 @@ export class TagExtractor {
     }
 
     try {
-      // 尝试加载 WASM 语言文件
+      // 首先检查是否有嵌入的语言 WASM
+      if (hasEmbeddedWasm()) {
+        const wasmName = `tree-sitter-${lang}.wasm`;
+        const wasmData = getEmbeddedWasm(wasmName);
+        if (wasmData) {
+          // 使用嵌入的 WASM 数据加载语言
+          const language = await ParserClass.Language.load(wasmData);
+          this.languages.set(lang, language);
+          return language;
+        }
+      }
+
+      // 回退到从文件系统加载
       const wasmPath = this.getWasmPath(lang);
       const language = await ParserClass.Language.load(wasmPath);
       this.languages.set(lang, language);

packages/core/src/repomap/tags/wasm-loader.ts

@@ -0,0 +1,52 @@
+/**
+ * WASM Loader for Tree-sitter
+ *
+ * 支持从文件系统或嵌入的 base64 数据加载 WASM
+ */
+
+// 嵌入的 WASM 数据（构建时生成）
+let embeddedWasm: Map<string, string> | null = null;
+
+/**
+ * 设置嵌入的 WASM 数据
+ */
+export function setEmbeddedWasm(wasm: Map<string, string>): void {
+  embeddedWasm = wasm;
+}
+
+/**
+ * 检查是否有嵌入的 WASM
+ */
+export function hasEmbeddedWasm(): boolean {
+  return embeddedWasm !== null && embeddedWasm.size > 0;
+}
+
+/**
+ * 获取嵌入的 WASM 数据
+ */
+export function getEmbeddedWasm(name: string): Uint8Array | null {
+  if (!embeddedWasm) return null;
+
+  const base64 = embeddedWasm.get(name);
+  if (!base64) return null;
+
+  // 解码 base64
+  const binaryString = atob(base64);
+  const bytes = new Uint8Array(binaryString.length);
+  for (let i = 0; i < binaryString.length; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+  return bytes;
+}
+
+/**
+ * 获取 tree-sitter.wasm 的路径或数据
+ */
+export function getTreeSitterWasmPath(): string | undefined {
+  // 如果没有嵌入数据，返回 undefined 让默认行为生效
+  if (!hasEmbeddedWasm()) {
+    return undefined;
+  }
+  // 返回一个特殊标记，在 init 时会被拦截
+  return '__embedded__';
+}

packages/core/src/session/index.ts

@@ -77,3 +77,10 @@ export type { SessionData, SessionSummary, ProjectMetadata } from './manager.js'
 
 // 项目工具
 export { getProjectId, isGitRepository } from './project.js';
+
+// Token 统计管理器
+export { TokenStatsManager, tokenStatsManager } from './token-stats-manager.js';
+export type { SessionTokenStats } from './token-stats-manager.js';
+
+// 项目管理器类型
+export type { ProjectStats } from './project-manager.js';

packages/core/src/session/project-manager.ts

@@ -6,6 +6,17 @@
 import * as storage from './storage/index.js';
 import { getProjectId, isGitRepository } from './project.js';
 
+/**
+ * 项目 Token 统计
+ */
+export interface ProjectStats {
+  totalInputTokens: number;
+  totalOutputTokens: number;
+  totalTokens: number;
+  sessionCount: number;
+  updatedAt: number;
+}
+
 /**
  * 项目元数据
  */
@@ -14,6 +25,7 @@ export interface ProjectMetadata {
   workdir: string;
   createdAt: string;
   isGitRepo: boolean;
+  stats?: ProjectStats;
 }
 
 /**

packages/core/src/session/session-store.ts

@@ -113,6 +113,8 @@ export class SessionStore {
         messageCount: session.messages.length,
         inputTokens: 0,
         outputTokens: 0,
+        totalTokens: 0,
+        updatedAt: Date.now(),
       },
     };
 

packages/core/src/session/storage/index.ts

@@ -17,8 +17,8 @@ export {
 
 // Session storage
 export * as SessionStorage from './session.js';
-export type { SessionInfo } from './session.js';
-export { SessionInfoSchema } from './session.js';
+export type { SessionInfo, SessionStats } from './session.js';
+export { SessionInfoSchema, SessionStatsSchema, ChildSessionsTokensSchema } from './session.js';
 
 // Message storage
 export * as MessageStorage from './message.js';

packages/core/src/session/storage/session.ts

@@ -2,6 +2,33 @@ import { z } from 'zod';
 import * as base from './base.js';
 import { generateSessionId } from '../id.js';
 
+/**
+ * 子会话 Token 统计 Schema
+ */
+export const ChildSessionsTokensSchema = z.object({
+  inputTokens: z.number(),
+  outputTokens: z.number(),
+  totalTokens: z.number(),
+});
+
+/**
+ * Session 统计信息 Schema
+ */
+export const SessionStatsSchema = z.object({
+  messageCount: z.number(),
+  inputTokens: z.number(),
+  outputTokens: z.number(),
+  totalTokens: z.number(),
+  // 缓存相关（Anthropic API 支持）
+  cacheReadTokens: z.number().optional(),
+  cacheWriteTokens: z.number().optional(),
+  // 子会话统计（合并所有子会话的 token 消耗）
+  childSessionsTokens: ChildSessionsTokensSchema.optional(),
+  // 统计最后更新时间
+  updatedAt: z.number(),
+});
+export type SessionStats = z.infer<typeof SessionStatsSchema>;
+
 /**
  * Session Info Schema
  */
@@ -16,13 +43,7 @@ export const SessionInfoSchema = z.object({
   title: z.string().optional(),
   discoveredTools: z.array(z.string()).default([]),
   // 统计信息
-  stats: z
-    .object({
-      messageCount: z.number(),
-      inputTokens: z.number(),
-      outputTokens: z.number(),
-    })
-    .optional(),
+  stats: SessionStatsSchema.optional(),
 });
 export type SessionInfo = z.infer<typeof SessionInfoSchema>;
 

packages/core/src/session/token-stats-manager.ts

@@ -0,0 +1,287 @@
+/**
+ * Token 统计管理器
+ * 负责 Session 和 Project 级别的 token 消耗统计
+ */
+
+import * as SessionStorage from './storage/session.js';
+import * as storage from './storage/index.js';
+import type { SessionStats } from './storage/session.js';
+import type { ProjectMetadata, ProjectStats } from './project-manager.js';
+import type { TokenUsageInfo } from '../types/index.js';
+
+/**
+ * Session Token 统计详情
+ */
+export interface SessionTokenStats {
+  /** 本会话自身的统计 */
+  self: {
+    inputTokens: number;
+    outputTokens: number;
+    totalTokens: number;
+    cacheReadTokens?: number;
+    cacheWriteTokens?: number;
+  };
+  /** 子会话统计汇总 */
+  children: {
+    inputTokens: number;
+    outputTokens: number;
+    totalTokens: number;
+  };
+  /** 总计（自身 + 子会话） */
+  total: {
+    inputTokens: number;
+    outputTokens: number;
+    totalTokens: number;
+  };
+  /** 消息数量 */
+  messageCount: number;
+  /** 最后更新时间 */
+  updatedAt: number;
+}
+
+/**
+ * Token 统计管理器
+ */
+export class TokenStatsManager {
+  /**
+   * 更新 Session 级别统计
+   * 将新的 token 使用累加到现有统计中
+   */
+  async updateSessionStats(
+    projectId: string,
+    sessionId: string,
+    usage: TokenUsageInfo
+  ): Promise<void> {
+    const session = await SessionStorage.get(projectId, sessionId);
+    if (!session) {
+      return;
+    }
+
+    const currentStats: SessionStats = session.stats || {
+      messageCount: 0,
+      inputTokens: 0,
+      outputTokens: 0,
+      totalTokens: 0,
+      updatedAt: Date.now(),
+    };
+
+    // 累加新的 token 使用
+    const newStats: SessionStats = {
+      messageCount: currentStats.messageCount + 1,
+      inputTokens: currentStats.inputTokens + usage.promptTokens,
+      outputTokens: currentStats.outputTokens + usage.completionTokens,
+      totalTokens: currentStats.totalTokens + usage.totalTokens,
+      cacheReadTokens: (currentStats.cacheReadTokens || 0) + (usage.cacheReadInputTokens || 0),
+      cacheWriteTokens: (currentStats.cacheWriteTokens || 0) + (usage.cacheCreationInputTokens || 0),
+      childSessionsTokens: currentStats.childSessionsTokens,
+      updatedAt: Date.now(),
+    };
+
+    await SessionStorage.updateStats(projectId, sessionId, newStats);
+  }
+
+  /**
+   * 合并子会话统计到父会话
+   * 在子会话（Task 工具）完成后调用
+   */
+  async mergeChildSessionStats(
+    projectId: string,
+    parentSessionId: string,
+    childSessionId: string
+  ): Promise<void> {
+    const parent = await SessionStorage.get(projectId, parentSessionId);
+    const child = await SessionStorage.get(projectId, childSessionId);
+
+    if (!parent || !child || !child.stats) {
+      return;
+    }
+
+    const parentStats: SessionStats = parent.stats || {
+      messageCount: 0,
+      inputTokens: 0,
+      outputTokens: 0,
+      totalTokens: 0,
+      updatedAt: Date.now(),
+    };
+
+    // 获取当前子会话累计
+    const childTokens = parentStats.childSessionsTokens || {
+      inputTokens: 0,
+      outputTokens: 0,
+      totalTokens: 0,
+    };
+
+    // 累加子会话的 token（包括子会话自身和其嵌套的子会话）
+    const childTotal = child.stats.inputTokens + (child.stats.childSessionsTokens?.inputTokens || 0);
+    const childOutputTotal = child.stats.outputTokens + (child.stats.childSessionsTokens?.outputTokens || 0);
+    const childTotalTokens = child.stats.totalTokens + (child.stats.childSessionsTokens?.totalTokens || 0);
+
+    parentStats.childSessionsTokens = {
+      inputTokens: childTokens.inputTokens + childTotal,
+      outputTokens: childTokens.outputTokens + childOutputTotal,
+      totalTokens: childTokens.totalTokens + childTotalTokens,
+    };
+    parentStats.updatedAt = Date.now();
+
+    await SessionStorage.updateStats(projectId, parentSessionId, parentStats);
+  }
+
+  /**
+   * 获取 Session 完整统计
+   * 包含自身统计、子会话统计和总计
+   */
+  async getSessionStats(
+    projectId: string,
+    sessionId: string
+  ): Promise<SessionTokenStats | null> {
+    const session = await SessionStorage.get(projectId, sessionId);
+    if (!session || !session.stats) {
+      return null;
+    }
+
+    const stats = session.stats;
+    const childStats = stats.childSessionsTokens || {
+      inputTokens: 0,
+      outputTokens: 0,
+      totalTokens: 0,
+    };
+
+    return {
+      self: {
+        inputTokens: stats.inputTokens,
+        outputTokens: stats.outputTokens,
+        totalTokens: stats.totalTokens,
+        cacheReadTokens: stats.cacheReadTokens,
+        cacheWriteTokens: stats.cacheWriteTokens,
+      },
+      children: {
+        inputTokens: childStats.inputTokens,
+        outputTokens: childStats.outputTokens,
+        totalTokens: childStats.totalTokens,
+      },
+      total: {
+        inputTokens: stats.inputTokens + childStats.inputTokens,
+        outputTokens: stats.outputTokens + childStats.outputTokens,
+        totalTokens: stats.totalTokens + childStats.totalTokens,
+      },
+      messageCount: stats.messageCount,
+      updatedAt: stats.updatedAt,
+    };
+  }
+
+  /**
+   * 更新 Project 级别统计
+   * 遍历项目下所有会话并汇总 token 消耗
+   */
+  async updateProjectStats(projectId: string): Promise<ProjectStats> {
+    const sessions = await SessionStorage.listByProject(projectId);
+
+    let totalInput = 0;
+    let totalOutput = 0;
+    let totalTokens = 0;
+
+    for (const session of sessions) {
+      // 跳过子会话（避免重复计算）
+      if (session.parentId) {
+        continue;
+      }
+
+      if (session.stats) {
+        totalInput += session.stats.inputTokens;
+        totalOutput += session.stats.outputTokens;
+        totalTokens += session.stats.totalTokens;
+
+        // 包含子会话统计
+        if (session.stats.childSessionsTokens) {
+          totalInput += session.stats.childSessionsTokens.inputTokens;
+          totalOutput += session.stats.childSessionsTokens.outputTokens;
+          totalTokens += session.stats.childSessionsTokens.totalTokens;
+        }
+      }
+    }
+
+    const projectStats: ProjectStats = {
+      totalInputTokens: totalInput,
+      totalOutputTokens: totalOutput,
+      totalTokens,
+      sessionCount: sessions.filter(s => !s.parentId).length,
+      updatedAt: Date.now(),
+    };
+
+    // 更新项目元数据
+    try {
+      await storage.update(['project', projectId], (project: ProjectMetadata) => {
+        project.stats = projectStats;
+      });
+    } catch {
+      // 项目可能不存在，忽略错误
+    }
+
+    return projectStats;
+  }
+
+  /**
+   * 获取 Project 统计
+   * 如果缓存的统计过期，会重新计算
+   */
+  async getProjectStats(
+    projectId: string,
+    forceRefresh = false
+  ): Promise<ProjectStats | null> {
+    try {
+      const project = await storage.read<ProjectMetadata>(['project', projectId]);
+
+      // 如果需要强制刷新，或者没有缓存的统计
+      if (forceRefresh || !project.stats) {
+        return await this.updateProjectStats(projectId);
+      }
+
+      return project.stats;
+    } catch (e) {
+      if (e instanceof storage.StorageNotFoundError) {
+        return null;
+      }
+      throw e;
+    }
+  }
+
+  /**
+   * 格式化 token 数量显示
+   */
+  formatTokens(tokens: number): string {
+    if (tokens >= 1000000) {
+      return `${(tokens / 1000000).toFixed(2)}M`;
+    }
+    if (tokens >= 1000) {
+      return `${(tokens / 1000).toFixed(1)}k`;
+    }
+    return `${tokens}`;
+  }
+
+  /**
+   * 格式化 Session 统计为可读字符串
+   */
+  formatSessionStats(stats: SessionTokenStats): string {
+    const lines = [
+      `Token 使用统计:`,
+      `  输入: ${this.formatTokens(stats.total.inputTokens)}`,
+      `  输出: ${this.formatTokens(stats.total.outputTokens)}`,
+      `  总计: ${this.formatTokens(stats.total.totalTokens)}`,
+    ];
+
+    if (stats.children.totalTokens > 0) {
+      lines.push(`  (其中子任务: ${this.formatTokens(stats.children.totalTokens)})`);
+    }
+
+    if (stats.self.cacheReadTokens) {
+      lines.push(`  缓存读取: ${this.formatTokens(stats.self.cacheReadTokens)}`);
+    }
+
+    lines.push(`  消息数: ${stats.messageCount}`);
+
+    return lines.join('\n');
+  }
+}
+
+// 导出单例
+export const tokenStatsManager = new TokenStatsManager();

packages/core/src/tools/load_description.ts

@@ -1,64 +1,16 @@
-import * as fs from 'fs';
-import * as path from 'path';
-import { fileURLToPath } from 'url';
+/**
+ * Tool Description Loader
+ *
+ * 从内联的 descriptions.generated.ts 加载工具描述
+ * 支持 Bun 单文件打包
+ */
 
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
-
-// 工具名到子目录的映射
-const TOOL_CATEGORY_MAP: Record<string, string> = {
-  // shell
-  bash: 'shell',
-  kill_shell: 'shell',
-  // filesystem
-  read_file: 'filesystem',
-  write_file: 'filesystem',
-  edit_file: 'filesystem',
-  multi_edit: 'filesystem',
-  glob: 'filesystem',
-  grep: 'filesystem',
-  // web
-  web_search: 'web',
-  web_extract: 'web',
-  // git
-  git_status: 'git',
-  git_diff: 'git',
-  git_log: 'git',
-  git_branch: 'git',
-  git_add: 'git',
-  git_commit: 'git',
-  git_push: 'git',
-  git_pull: 'git',
-  git_checkout: 'git',
-  git_stash: 'git',
-  // todo
-  todo_write: 'todo',
-  // plan
-  ask_user_question: 'plan',
-  enter_plan_mode: 'plan',
-  exit_plan_mode: 'plan',
-  // task
-  task: 'task',
-  task_output: 'task',
-  // checkpoint
-  checkpoint_create: 'checkpoint',
-  checkpoint_list: 'checkpoint',
-  checkpoint_diff: 'checkpoint',
-  checkpoint_restore: 'checkpoint',
-  undo: 'checkpoint',
-  // repomap
-  repo_map: 'repomap',
-};
+import { TOOL_DESCRIPTIONS } from './descriptions.generated.js';
 
 export function loadDescription(toolName: string): string {
-  const category = TOOL_CATEGORY_MAP[toolName];
-  const filePath = category
-    ? path.join(__dirname, 'descriptions', category, `${toolName}.txt`)
-    : path.join(__dirname, 'descriptions', `${toolName}.txt`);
-
-  try {
-    return fs.readFileSync(filePath, 'utf-8').trim();
-  } catch {
-    throw new Error(`无法加载工具描述文件: ${filePath}`);
+  const description = TOOL_DESCRIPTIONS[toolName];
+  if (!description) {
+    throw new Error(`工具描述未找到: ${toolName}`);
   }
+  return description;
 }

packages/core/src/tools/task/task.ts

@@ -4,7 +4,7 @@ import type { AgentConfig, ToolResult } from '../../types/index.js';
 import type { ImageData } from '../../agent/types.js';
 import { agentRegistry, AgentExecutor, agentEventEmitter } from '../../agent/index.js';
 import { toolRegistry } from '../registry.js';
-import { SessionManager } from '../../session/index.js';
+import { SessionManager, tokenStatsManager } from '../../session/index.js';
 import { getAgentManager } from '../../agent/manager.js';
 import { loadVisionConfig } from '../../utils/config.js';
 import { loadDescription } from '../load_description.js';
@@ -317,6 +317,22 @@ async function executeTask(params: TaskParams): Promise<ToolResult> {
   ];
   await sessionManager.saveChildSession(childSession);
 
+  // 更新子会话的 Token 统计
+  const session = sessionManager.getSession();
+  if (result.usage && session) {
+    await tokenStatsManager.updateSessionStats(
+      session.projectId,
+      childSession.id,
+      result.usage
+    );
+    // 合并子会话统计到父会话
+    await tokenStatsManager.mergeChildSessionStats(
+      session.projectId,
+      parentSessionId,
+      childSession.id
+    );
+  }
+
   if (result.success) {
     return {
       success: true,

packages/core/src/types/index.ts

@@ -96,12 +96,30 @@ export interface ConversationContext {
   workingDirectory: string;
 }
 
+/**
+ * Token 使用统计信息
+ */
+export interface TokenUsageInfo {
+  /** 输入 tokens（prompt） */
+  promptTokens: number;
+  /** 输出 tokens（completion） */
+  completionTokens: number;
+  /** 总 tokens */
+  totalTokens: number;
+  /** 缓存读取的输入 tokens（Anthropic API） */
+  cacheReadInputTokens?: number;
+  /** 缓存创建的输入 tokens（Anthropic API） */
+  cacheCreationInputTokens?: number;
+}
+
 // Chat 返回结果（包含完整的消息链）
 export interface ChatResult {
   /** 最终文本响应 */
   text: string;
   /** 完整的响应消息链（包含 tool-call 和 tool-result） */
   messages: unknown[];
+  /** Token 使用统计（从 AI SDK response.usage 提取） */
+  usage?: TokenUsageInfo;
 }
 
 // 将自定义 Tool 转换为 Vercel AI SDK 的 zod schema

packages/core/tests/unit/session/token-stats-manager.test.ts

@@ -0,0 +1,372 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+
+// Mock storage functions before imports
+vi.mock('../../../src/session/storage/session.js', () => ({
+  get: vi.fn(),
+  update: vi.fn(),
+  updateStats: vi.fn(),
+  list: vi.fn(),
+  listByProject: vi.fn(),
+}));
+
+vi.mock('../../../src/session/storage/index.js', () => ({
+  read: vi.fn(),
+  update: vi.fn(),
+  StorageNotFoundError: class StorageNotFoundError extends Error {
+    constructor(message: string) {
+      super(message);
+      this.name = 'StorageNotFoundError';
+    }
+  },
+}));
+
+import * as SessionStorage from '../../../src/session/storage/session.js';
+import { TokenStatsManager } from '../../../src/session/token-stats-manager.js';
+import type { TokenUsageInfo } from '../../../src/types/index.js';
+
+describe('TokenStatsManager', () => {
+  let manager: TokenStatsManager;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    manager = new TokenStatsManager();
+  });
+
+  describe('updateSessionStats', () => {
+    it('会话不存在时不更新', async () => {
+      const usage: TokenUsageInfo = {
+        promptTokens: 1000,
+        completionTokens: 500,
+        totalTokens: 1500,
+      };
+
+      vi.mocked(SessionStorage.get).mockResolvedValue(null);
+
+      await manager.updateSessionStats('project-1', 'session-1', usage);
+
+      expect(SessionStorage.get).toHaveBeenCalledWith('project-1', 'session-1');
+      expect(SessionStorage.updateStats).not.toHaveBeenCalled();
+    });
+
+    it('更新会话统计 - 已存在的会话', async () => {
+      const usage: TokenUsageInfo = {
+        promptTokens: 1000,
+        completionTokens: 500,
+        totalTokens: 1500,
+      };
+
+      vi.mocked(SessionStorage.get).mockResolvedValue({
+        id: 'session-1',
+        projectId: 'project-1',
+        createdAt: Date.now(),
+        updatedAt: Date.now(),
+        workdir: '/test',
+        stats: {
+          messageCount: 5,
+          inputTokens: 2000,
+          outputTokens: 1000,
+          totalTokens: 3000,
+          updatedAt: Date.now() - 1000,
+        },
+      });
+
+      await manager.updateSessionStats('project-1', 'session-1', usage);
+
+      expect(SessionStorage.updateStats).toHaveBeenCalledWith(
+        'project-1',
+        'session-1',
+        expect.objectContaining({
+          messageCount: 6, // 5 + 1
+          inputTokens: 3000, // 2000 + 1000
+          outputTokens: 1500, // 1000 + 500
+          totalTokens: 4500, // 3000 + 1500
+        })
+      );
+    });
+
+    it('处理缓存 token', async () => {
+      const usage: TokenUsageInfo = {
+        promptTokens: 1000,
+        completionTokens: 500,
+        totalTokens: 1500,
+        cacheReadInputTokens: 200,
+        cacheCreationInputTokens: 100,
+      };
+
+      vi.mocked(SessionStorage.get).mockResolvedValue({
+        id: 'session-1',
+        projectId: 'project-1',
+        createdAt: Date.now(),
+        updatedAt: Date.now(),
+        workdir: '/test',
+        stats: {
+          messageCount: 0,
+          inputTokens: 0,
+          outputTokens: 0,
+          totalTokens: 0,
+          updatedAt: Date.now(),
+        },
+      });
+
+      await manager.updateSessionStats('project-1', 'session-1', usage);
+
+      expect(SessionStorage.updateStats).toHaveBeenCalledWith(
+        'project-1',
+        'session-1',
+        expect.objectContaining({
+          cacheReadTokens: 200,
+          cacheWriteTokens: 100,
+        })
+      );
+    });
+  });
+
+  describe('mergeChildSessionStats', () => {
+    it('合并子会话统计到父会话', async () => {
+      vi.mocked(SessionStorage.get).mockImplementation(async (projectId: string, sessionId: string) => {
+        if (sessionId === 'child-session') {
+          return {
+            id: 'child-session',
+            projectId,
+            createdAt: Date.now(),
+            updatedAt: Date.now(),
+            workdir: '/test',
+            stats: {
+              messageCount: 3,
+              inputTokens: 500,
+              outputTokens: 300,
+              totalTokens: 800,
+              updatedAt: Date.now(),
+            },
+          };
+        }
+        if (sessionId === 'parent-session') {
+          return {
+            id: 'parent-session',
+            projectId,
+            createdAt: Date.now(),
+            updatedAt: Date.now(),
+            workdir: '/test',
+            stats: {
+              messageCount: 10,
+              inputTokens: 2000,
+              outputTokens: 1000,
+              totalTokens: 3000,
+              updatedAt: Date.now(),
+            },
+          };
+        }
+        return null;
+      });
+
+      await manager.mergeChildSessionStats('project-1', 'parent-session', 'child-session');
+
+      expect(SessionStorage.updateStats).toHaveBeenCalledWith(
+        'project-1',
+        'parent-session',
+        expect.objectContaining({
+          childSessionsTokens: expect.objectContaining({
+            inputTokens: 500,
+            outputTokens: 300,
+            totalTokens: 800,
+          }),
+        })
+      );
+    });
+
+    it('累加子会话统计', async () => {
+      vi.mocked(SessionStorage.get).mockImplementation(async (projectId: string, sessionId: string) => {
+        if (sessionId === 'child-session-2') {
+          return {
+            id: 'child-session-2',
+            projectId,
+            createdAt: Date.now(),
+            updatedAt: Date.now(),
+            workdir: '/test',
+            stats: {
+              messageCount: 2,
+              inputTokens: 300,
+              outputTokens: 200,
+              totalTokens: 500,
+              updatedAt: Date.now(),
+            },
+          };
+        }
+        if (sessionId === 'parent-session') {
+          return {
+            id: 'parent-session',
+            projectId,
+            createdAt: Date.now(),
+            updatedAt: Date.now(),
+            workdir: '/test',
+            stats: {
+              messageCount: 10,
+              inputTokens: 2000,
+              outputTokens: 1000,
+              totalTokens: 3000,
+              childSessionsTokens: {
+                inputTokens: 500,
+                outputTokens: 300,
+                totalTokens: 800,
+              },
+              updatedAt: Date.now(),
+            },
+          };
+        }
+        return null;
+      });
+
+      await manager.mergeChildSessionStats('project-1', 'parent-session', 'child-session-2');
+
+      expect(SessionStorage.updateStats).toHaveBeenCalledWith(
+        'project-1',
+        'parent-session',
+        expect.objectContaining({
+          childSessionsTokens: expect.objectContaining({
+            inputTokens: 800, // 500 + 300
+            outputTokens: 500, // 300 + 200
+            totalTokens: 1300, // 800 + 500
+          }),
+        })
+      );
+    });
+  });
+
+  describe('getSessionStats', () => {
+    it('返回完整的会话统计', async () => {
+      const now = Date.now();
+      vi.mocked(SessionStorage.get).mockResolvedValue({
+        id: 'session-1',
+        projectId: 'project-1',
+        createdAt: now,
+        updatedAt: now,
+        workdir: '/test',
+        stats: {
+          messageCount: 10,
+          inputTokens: 5000,
+          outputTokens: 2500,
+          totalTokens: 7500,
+          cacheReadTokens: 1000,
+          cacheWriteTokens: 500,
+          childSessionsTokens: {
+            inputTokens: 1000,
+            outputTokens: 500,
+            totalTokens: 1500,
+          },
+          updatedAt: now,
+        },
+      });
+
+      const stats = await manager.getSessionStats('project-1', 'session-1');
+
+      expect(stats).toMatchObject({
+        self: {
+          inputTokens: 5000,
+          outputTokens: 2500,
+          totalTokens: 7500,
+          cacheReadTokens: 1000,
+          cacheWriteTokens: 500,
+        },
+        children: {
+          inputTokens: 1000,
+          outputTokens: 500,
+          totalTokens: 1500,
+        },
+        total: {
+          inputTokens: 6000, // 5000 + 1000
+          outputTokens: 3000, // 2500 + 500
+          totalTokens: 9000, // 7500 + 1500
+        },
+        messageCount: 10,
+      });
+    });
+
+    it('会话不存在时返回 null', async () => {
+      vi.mocked(SessionStorage.get).mockResolvedValue(null);
+
+      const stats = await manager.getSessionStats('project-1', 'nonexistent');
+
+      expect(stats).toBeNull();
+    });
+
+    it('没有子会话统计时返回空的 children', async () => {
+      vi.mocked(SessionStorage.get).mockResolvedValue({
+        id: 'session-1',
+        projectId: 'project-1',
+        createdAt: Date.now(),
+        updatedAt: Date.now(),
+        workdir: '/test',
+        stats: {
+          messageCount: 5,
+          inputTokens: 1000,
+          outputTokens: 500,
+          totalTokens: 1500,
+          updatedAt: Date.now(),
+        },
+      });
+
+      const stats = await manager.getSessionStats('project-1', 'session-1');
+
+      expect(stats?.children).toEqual({
+        inputTokens: 0,
+        outputTokens: 0,
+        totalTokens: 0,
+      });
+      expect(stats?.total).toEqual({
+        inputTokens: 1000,
+        outputTokens: 500,
+        totalTokens: 1500,
+      });
+    });
+  });
+
+  describe('formatTokens', () => {
+    it('格式化小数字', () => {
+      expect(manager.formatTokens(100)).toBe('100');
+      expect(manager.formatTokens(999)).toBe('999');
+    });
+
+    it('格式化千级数字', () => {
+      expect(manager.formatTokens(1000)).toBe('1.0k');
+      expect(manager.formatTokens(1500)).toBe('1.5k');
+      expect(manager.formatTokens(9999)).toBe('10.0k');
+    });
+
+    it('格式化百万级数字', () => {
+      expect(manager.formatTokens(1000000)).toBe('1.00M');
+      expect(manager.formatTokens(1500000)).toBe('1.50M');
+    });
+  });
+
+  describe('formatSessionStats', () => {
+    it('格式化会话统计为人类可读字符串', () => {
+      const stats = {
+        self: {
+          inputTokens: 5000,
+          outputTokens: 2500,
+          totalTokens: 7500,
+        },
+        children: {
+          inputTokens: 1000,
+          outputTokens: 500,
+          totalTokens: 1500,
+        },
+        total: {
+          inputTokens: 6000,
+          outputTokens: 3000,
+          totalTokens: 9000,
+        },
+        messageCount: 10,
+        updatedAt: Date.now(),
+      };
+
+      const formatted = manager.formatSessionStats(stats);
+
+      expect(formatted).toContain('6.0k'); // total input
+      expect(formatted).toContain('3.0k'); // total output
+      expect(formatted).toContain('9.0k'); // total
+      expect(formatted).toContain('1.5k'); // children
+      expect(formatted).toContain('10'); // message count
+    });
+  });
+});

packages/desktop/floating.html

@@ -0,0 +1,25 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Quick Ask</title>
+    <style>
+      /* 透明背景 */
+      html, body {
+        margin: 0;
+        padding: 0;
+        background: transparent;
+        overflow: hidden;
+      }
+      #root {
+        width: 100%;
+        height: 100vh;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/floating.tsx"></script>
+  </body>
+</html>

packages/desktop/src-tauri/Cargo.toml

@@ -14,7 +14,7 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 tauri-build = { version = "2", features = [] }
 
 [dependencies]
-tauri = { version = "2", features = ["tray-icon"] }
+tauri = { version = "2", features = ["macos-private-api", "tray-icon"] }
 tauri-plugin-shell = "2"
 tauri-plugin-fs = "2"
 tauri-plugin-dialog = "2"

packages/desktop/src-tauri/capabilities/default.json

@@ -5,6 +5,15 @@
   "windows": ["*"],
   "permissions": [
     "core:default",
+    "core:window:allow-show",
+    "core:window:allow-hide",
+    "core:window:allow-close",
+    "core:window:allow-set-focus",
+    "core:window:allow-set-position",
+    "core:window:allow-set-size",
+    "core:window:allow-start-dragging",
+    "core:window:allow-is-visible",
+    "core:webview:allow-create-webview-window",
     "shell:default",
     "fs:default",
     "dialog:default",

packages/desktop/src-tauri/gen/schemas/capabilities.json

@@ -1 +1 @@
-{"default":{"identifier":"default","description":"Default capabilities for the application","local":true,"windows":["*"],"permissions":["core:default","shell:default","fs:default","dialog:default",{"identifier":"http:default","allow":[{"url":"http://localhost:*/*"},{"url":"http://127.0.0.1:*/*"}]}]}}
+{"default":{"identifier":"default","description":"Default capabilities for the application","local":true,"windows":["*"],"permissions":["core:default","core:window:allow-show","core:window:allow-hide","core:window:allow-close","core:window:allow-set-focus","core:window:allow-set-position","core:window:allow-set-size","core:window:allow-start-dragging","core:window:allow-is-visible","core:webview:allow-create-webview-window","shell:default","fs:default","dialog:default",{"identifier":"http:default","allow":[{"url":"http://localhost:*/*"},{"url":"http://127.0.0.1:*/*"}]}]}}

packages/desktop/src-tauri/src/commands.rs

@@ -2,6 +2,7 @@ use serde::Serialize;
 use std::fs;
 use std::path::PathBuf;
 use std::sync::mpsc;
+use tauri::Manager;
 use tauri_plugin_dialog::DialogExt;
 
 #[derive(Serialize)]
@@ -116,3 +117,70 @@ pub async fn list_directory(path: String) -> Result<Vec<DirectoryEntry>, String>
 
     Ok(entries)
 }
+
+// 悬浮窗口控制命令
+
+#[tauri::command]
+pub async fn toggle_floating_window(app: tauri::AppHandle) -> Result<bool, String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        let is_visible = window.is_visible().map_err(|e| e.to_string())?;
+        if is_visible {
+            window.hide().map_err(|e| e.to_string())?;
+            Ok(false)
+        } else {
+            window.show().map_err(|e| e.to_string())?;
+            window.set_focus().map_err(|e| e.to_string())?;
+            Ok(true)
+        }
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn show_floating_window(app: tauri::AppHandle) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        window.show().map_err(|e| e.to_string())?;
+        window.set_focus().map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn hide_floating_window(app: tauri::AppHandle) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        window.hide().map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn show_main_window(app: tauri::AppHandle) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("main") {
+        window.show().map_err(|e| e.to_string())?;
+        window.set_focus().map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Main window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn set_floating_window_size(
+    app: tauri::AppHandle,
+    width: f64,
+    height: f64,
+) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        window
+            .set_size(tauri::Size::Logical(tauri::LogicalSize { width, height }))
+            .map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}

packages/desktop/src-tauri/src/lib.rs

@@ -21,16 +21,22 @@ pub fn run() {
             commands::open_directory_dialog,
             commands::read_local_file,
             commands::list_directory,
+            commands::toggle_floating_window,
+            commands::show_floating_window,
+            commands::hide_floating_window,
+            commands::show_main_window,
+            commands::set_floating_window_size,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }
 
 fn setup_tray<R: Runtime>(app: &tauri::App<R>) -> Result<(), Box<dyn std::error::Error>> {
-    let show_item = MenuItem::with_id(app, "show", "Show Window", true, None::<&str>)?;
+    let show_item = MenuItem::with_id(app, "show", "Show Main Window", true, None::<&str>)?;
+    let floating_item = MenuItem::with_id(app, "floating", "Toggle Quick Ask", true, None::<&str>)?;
     let quit_item = MenuItem::with_id(app, "quit", "Quit", true, None::<&str>)?;
 
-    let menu = Menu::with_items(app, &[&show_item, &quit_item])?;
+    let menu = Menu::with_items(app, &[&show_item, &floating_item, &quit_item])?;
 
     let _tray = TrayIconBuilder::new()
         .menu(&menu)
@@ -42,6 +48,16 @@ fn setup_tray<R: Runtime>(app: &tauri::App<R>) -> Result<(), Box<dyn std::error:
                     let _ = window.set_focus();
                 }
             }
+            "floating" => {
+                if let Some(window) = app.get_webview_window("floating") {
+                    if window.is_visible().unwrap_or(false) {
+                        let _ = window.hide();
+                    } else {
+                        let _ = window.show();
+                        let _ = window.set_focus();
+                    }
+                }
+            }
             "quit" => {
                 app.exit(0);
             }

packages/desktop/src-tauri/tauri.conf.json

@@ -11,8 +11,10 @@
   },
   "app": {
     "withGlobalTauri": true,
+    "macOSPrivateApi": true,
     "windows": [
       {
+        "label": "main",
         "title": "AI Assistant",
         "width": 1200,
         "height": 800,
@@ -21,13 +23,29 @@
         "resizable": true,
         "fullscreen": false,
         "center": true
+      },
+      {
+        "label": "floating",
+        "title": "",
+        "url": "/floating.html",
+        "width": 60,
+        "height": 60,
+        "minWidth": 60,
+        "minHeight": 60,
+        "resizable": false,
+        "decorations": false,
+        "transparent": true,
+        "shadow": false,
+        "alwaysOnTop": true,
+        "visible": true,
+        "skipTaskbar": true
       }
     ],
     "security": {
       "csp": "default-src 'self'; connect-src 'self' http://localhost:* ws://localhost:* http://127.0.0.1:* ws://127.0.0.1:*; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'"
     },
     "trayIcon": {
-      "iconPath": "icons/icon.png",
+      "iconPath": "icons/32x32.png",
       "iconAsTemplate": true
     }
   },

packages/desktop/src/App.tsx

@@ -1,64 +1,89 @@
 /**
  * App Component
+ *
+ * 响应式布局：支持桌面端和移动端
  */
 
 import { useState, useEffect, useCallback } from 'react';
 import {
-  Sidebar,
-  FileBrowser,
-  ConfigPanel,
+  IDE,
   CommandPanel,
   MCPPanel,
   HooksPanel,
   AgentsPanel,
   CheckpointPanel,
   ProvidersPanel,
+  ServicesPanel,
+  LSPPanel,
+  DiagnosticsPanel,
+  SessionPanel,
+  StatusBar,
+  Resizer,
   Toaster,
+  ThemeProvider,
   listSessions,
   createSession,
   type Session,
+  type ActiveFileInfo,
+  type FileDiffInfo,
 } from '@ai-assistant/ui';
 import { ChatPage } from './pages/Chat';
 
 export function App() {
   const [currentSessionId, setCurrentSessionId] = useState<string | null>(null);
   const [isInitializing, setIsInitializing] = useState(true);
-  const [showFileBrowser, setShowFileBrowser] = useState(false);
-  const [showConfig, setShowConfig] = useState(false);
+  const [connectionError, setConnectionError] = useState<string | null>(null);
   const [showCommands, setShowCommands] = useState(false);
   const [showMCP, setShowMCP] = useState(false);
   const [showHooks, setShowHooks] = useState(false);
   const [showAgents, setShowAgents] = useState(false);
   const [showCheckpoints, setShowCheckpoints] = useState(false);
   const [showProviders, setShowProviders] = useState(false);
+  const [showServices, setShowServices] = useState(false);
+  const [showLSP, setShowLSP] = useState(false);
+  const [showDiagnostics, setShowDiagnostics] = useState(false);
+  const [showSessions, setShowSessions] = useState(false);
   const [sessionTitleUpdate, setSessionTitleUpdate] = useState<{ sessionId: string; name: string } | null>(null);
+  // IDE 面板宽度（百分比）
+  const [idePanelWidth, setIdePanelWidth] = useState(() => {
+    const saved = localStorage.getItem('ai-assistant-ide-width');
+    return saved ? parseFloat(saved) : 70;
+  });
 
-  // 初始化：加载会话（只在首次启动时自动创建）
+  // 编辑器联动状态
+  const [activeFile, setActiveFile] = useState<ActiveFileInfo | null>(null);
+  const [autoAttachActiveFile, setAutoAttachActiveFile] = useState(() => {
+    const saved = localStorage.getItem('ai-assistant-auto-attach-file');
+    return saved !== 'false'; // 默认开启
+  });
+
+  // Diff 显示状态（当 AI 编辑/写入文件时触发）
+  const [pendingDiff, setPendingDiff] = useState<FileDiffInfo | null>(null);
+
+  // 持久化自动附加开关状态
   useEffect(() => {
-    const HAS_SESSIONS_KEY = 'ai-assistant-has-sessions';
+    localStorage.setItem('ai-assistant-auto-attach-file', String(autoAttachActiveFile));
+  }, [autoAttachActiveFile]);
 
+  // 初始化：加载会话
+  useEffect(() => {
     async function init() {
       try {
-        const { data: sessions } = await listSessions();
+        const sessionsResult = await listSessions();
+        const { data: sessions } = sessionsResult;
 
         if (sessions.length > 0) {
           // 有会话，选择最近的
           setCurrentSessionId(sessions[0].id);
-          localStorage.setItem(HAS_SESSIONS_KEY, 'true');
         } else {
-          // 无会话：检查是否是首次启动
-          const hasHadSessions = localStorage.getItem(HAS_SESSIONS_KEY);
-
-          if (!hasHadSessions) {
-            // 首次启动，自动创建会话
-            const { data: newSession } = await createSession();
-            setCurrentSessionId(newSession.id);
-            localStorage.setItem(HAS_SESSIONS_KEY, 'true');
-          }
-          // 用户删除了所有会话：不自动创建，显示空状态
+          // 无会话，自动创建一个新会话
+          // 这处理了新 project 目录的情况
+          const { data: newSession } = await createSession();
+          setCurrentSessionId(newSession.id);
         }
       } catch (error) {
         console.error('Failed to initialize:', error);
+        setConnectionError('无法连接到服务器。请确保后端服务已启动 (pnpm server:dev)');
       } finally {
         setIsInitializing(false);
       }
@@ -75,91 +100,211 @@ export function App() {
     setCurrentSessionId(session.id);
   };
 
+  // 会话不存在时自动创建新会话
+  const handleSessionNotFound = useCallback(async () => {
+    try {
+      const { data: newSession } = await createSession();
+      setCurrentSessionId(newSession.id);
+    } catch (error) {
+      console.error('Failed to create new session:', error);
+    }
+  }, []);
+
   // 会话标题更新回调
   const handleSessionUpdated = useCallback((sessionId: string, name: string) => {
     setSessionTitleUpdate({ sessionId, name });
   }, []);
 
+  // 会话切换回调（:new 命令创建新会话后切换）
+  const handleSessionSwitch = useCallback((newSessionId: string) => {
+    setCurrentSessionId(newSessionId);
+  }, []);
+
+  // 文件 diff 回调（当 AI 编辑/写入文件时触发）
+  const handleFileDiff = useCallback((diff: FileDiffInfo) => {
+    setPendingDiff(diff);
+  }, []);
+
+  // Diff 关闭回调
+  const handleDiffClose = useCallback(() => {
+    setPendingDiff(null);
+  }, []);
+
+  // 处理面板宽度调整
+  const handleResize = useCallback((delta: number) => {
+    setIdePanelWidth((prev) => {
+      // 计算百分比变化（基于窗口宽度）
+      const percentDelta = (delta / window.innerWidth) * 100;
+      // 限制范围：30% - 80%
+      return Math.min(80, Math.max(30, prev + percentDelta));
+    });
+  }, []);
+
+  // 保存面板宽度到 localStorage
+  const handleResizeEnd = useCallback(() => {
+    localStorage.setItem('ai-assistant-ide-width', String(idePanelWidth));
+  }, [idePanelWidth]);
+
   if (isInitializing) {
     return (
-      <div className="h-screen flex items-center justify-center bg-gray-900">
-        <div className="text-center">
-          <div className="w-8 h-8 border-2 border-primary-500 border-t-transparent rounded-full animate-spin mx-auto mb-4" />
-          <p className="text-gray-400">Initializing...</p>
+      <ThemeProvider defaultTheme="dark">
+        <div className="h-screen flex items-center justify-center bg-surface-base">
+          <div className="text-center">
+            <div className="w-8 h-8 border-2 border-primary-500 border-t-transparent rounded-full animate-spin mx-auto mb-4" />
+            <p className="text-fg-muted">Initializing...</p>
+          </div>
         </div>
-      </div>
+      </ThemeProvider>
     );
   }
 
   return (
-    <div className="h-screen flex bg-gray-900">
-      <Sidebar
-        currentSessionId={currentSessionId}
-        onSelectSession={handleSelectSession}
-        onCreateSession={handleCreateSession}
-        sessionTitleUpdate={sessionTitleUpdate}
-      />
-
-      <div className="flex-1 flex">
-        {/* 聊天区域 */}
-        <div className={`flex-1 ${showFileBrowser ? 'w-1/2' : 'w-full'}`}>
-          {currentSessionId ? (
-            <ChatPage
-              key={currentSessionId}
-              sessionId={currentSessionId}
-              onSessionUpdated={handleSessionUpdated}
-              showFileBrowser={showFileBrowser}
-              onToggleFileBrowser={() => setShowFileBrowser(!showFileBrowser)}
-              onOpenConfig={() => setShowConfig(true)}
-              onOpenCommands={() => setShowCommands(true)}
-              onOpenMCP={() => setShowMCP(true)}
-              onOpenHooks={() => setShowHooks(true)}
-              onOpenAgents={() => setShowAgents(true)}
-              onOpenCheckpoints={() => setShowCheckpoints(true)}
-              onOpenProviders={() => setShowProviders(true)}
-            />
-          ) : (
-            <div className="flex-1 flex items-center justify-center h-full">
-              <p className="text-gray-400">Select or create a session</p>
-            </div>
-          )}
-        </div>
-
-        {/* 文件浏览器 */}
-        {showFileBrowser && (
-          <div className="w-1/2 border-l border-gray-700">
-            <FileBrowser
-              onFileSelect={(path, _content) => {
-                console.log('Selected file:', path);
-              }}
+    <ThemeProvider defaultTheme="dark">
+      <div className="h-screen flex flex-col bg-surface-base">
+        {/* 主内容区域：左侧文件浏览器 + 右侧对话框 */}
+        <div className="flex-1 flex min-w-0 overflow-hidden">
+          {/* 左侧：IDE（文件浏览器 + 代码编辑器） */}
+          <div
+            className="hidden md:flex flex-col"
+            style={{ width: `${idePanelWidth}%` }}
+          >
+            <IDE
+              onActiveFileChange={setActiveFile}
+              pendingDiff={pendingDiff}
+              onDiffClose={handleDiffClose}
             />
           </div>
+
+          {/* 可拖拽分割线 */}
+          <Resizer
+            onResize={handleResize}
+            onResizeEnd={handleResizeEnd}
+            className="hidden md:block"
+          />
+
+          {/* 右侧：聊天区域 */}
+          <div className="flex-1 min-w-0">
+            {connectionError ? (
+              <div className="flex-1 flex flex-col items-center justify-center h-full gap-4 p-8">
+                <div className="w-16 h-16 rounded-full bg-red-500/10 flex items-center justify-center">
+                  <svg className="w-8 h-8 text-red-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z" />
+                  </svg>
+                </div>
+                <div className="text-center max-w-md">
+                  <h3 className="text-lg font-semibold text-fg mb-2">连接失败</h3>
+                  <p className="text-fg-muted text-sm mb-4">{connectionError}</p>
+                  <button
+                    onClick={() => {
+                      setConnectionError(null);
+                      setIsInitializing(true);
+                      window.location.reload();
+                    }}
+                    className="px-4 py-2 bg-primary-500 hover:bg-primary-600 text-white rounded-lg transition-colors"
+                  >
+                    重试连接
+                  </button>
+                </div>
+              </div>
+            ) : currentSessionId ? (
+              <ChatPage
+                key={currentSessionId}
+                sessionId={currentSessionId}
+                onSessionNotFound={handleSessionNotFound}
+                onSessionUpdated={handleSessionUpdated}
+                onSessionSwitch={handleSessionSwitch}
+                responsive
+                onOpenCommands={() => setShowCommands(true)}
+                onOpenMCP={() => setShowMCP(true)}
+                onOpenHooks={() => setShowHooks(true)}
+                onOpenAgents={() => setShowAgents(true)}
+                onOpenCheckpoints={() => setShowCheckpoints(true)}
+                onOpenProviders={() => setShowProviders(true)}
+                onOpenServices={() => setShowServices(true)}
+                onOpenLSP={() => setShowLSP(true)}
+                onOpenDiagnostics={() => setShowDiagnostics(true)}
+                onOpenSessions={() => setShowSessions(true)}
+                activeFile={activeFile}
+                autoAttachActiveFile={autoAttachActiveFile}
+                onAutoAttachActiveFileToggle={setAutoAttachActiveFile}
+                onFileDiff={handleFileDiff}
+                onViewDiff={handleFileDiff}
+              />
+            ) : (
+              <div className="flex-1 flex items-center justify-center h-full">
+                <p className="text-fg-muted">Select or create a session</p>
+              </div>
+            )}
+          </div>
+
+        </div>
+
+        {/* 底部状态栏 */}
+        <StatusBar
+          sessionId={currentSessionId}
+          onDiagnosticsClick={() => setShowDiagnostics(true)}
+        />
+
+        {/* 命令面板 */}
+        {showCommands && <CommandPanel onClose={() => setShowCommands(false)} responsive />}
+
+        {/* MCP 面板 */}
+        {showMCP && <MCPPanel onClose={() => setShowMCP(false)} responsive />}
+
+        {/* Hooks 面板 */}
+        {showHooks && <HooksPanel onClose={() => setShowHooks(false)} responsive />}
+
+        {/* Agents 面板 */}
+        {showAgents && <AgentsPanel onClose={() => setShowAgents(false)} responsive />}
+
+        {/* Checkpoints 面板 */}
+        {showCheckpoints && <CheckpointPanel onClose={() => setShowCheckpoints(false)} responsive />}
+
+        {/* Providers 面板 */}
+        {showProviders && <ProvidersPanel onClose={() => setShowProviders(false)} responsive />}
+
+        {/* Services 面板 */}
+        {showServices && <ServicesPanel onClose={() => setShowServices(false)} responsive />}
+
+        {/* LSP 面板 */}
+        {showLSP && (
+          <LSPPanel
+            onClose={() => setShowLSP(false)}
+            onOpenDiagnostics={() => {
+              setShowLSP(false);
+              setShowDiagnostics(true);
+            }}
+            responsive
+          />
         )}
+
+        {/* Diagnostics 面板 */}
+        {showDiagnostics && (
+          <DiagnosticsPanel
+            onClose={() => setShowDiagnostics(false)}
+            onFileClick={(file, line) => {
+              console.log('Navigate to:', file, line);
+              // TODO: Integrate with file browser or editor
+            }}
+            responsive
+          />
+        )}
+
+        {/* Sessions 面板 */}
+        {showSessions && (
+          <SessionPanel
+            onClose={() => setShowSessions(false)}
+            currentSessionId={currentSessionId}
+            onSelectSession={handleSelectSession}
+            onCreateSession={handleCreateSession}
+            sessionTitleUpdate={sessionTitleUpdate}
+            responsive
+          />
+        )}
+
+        {/* Toast 通知 */}
+        <Toaster />
       </div>
-
-      {/* 配置面板 */}
-      {showConfig && <ConfigPanel onClose={() => setShowConfig(false)} />}
-
-      {/* 命令面板 */}
-      {showCommands && <CommandPanel onClose={() => setShowCommands(false)} />}
-
-      {/* MCP 面板 */}
-      {showMCP && <MCPPanel onClose={() => setShowMCP(false)} />}
-
-      {/* Hooks 面板 */}
-      {showHooks && <HooksPanel onClose={() => setShowHooks(false)} />}
-
-      {/* Agents 面板 */}
-      {showAgents && <AgentsPanel onClose={() => setShowAgents(false)} />}
-
-      {/* Checkpoints 面板 */}
-      {showCheckpoints && <CheckpointPanel onClose={() => setShowCheckpoints(false)} />}
-
-      {/* Providers 面板 */}
-      {showProviders && <ProvidersPanel onClose={() => setShowProviders(false)} />}
-
-      {/* Toast 通知 */}
-      <Toaster />
-    </div>
+    </ThemeProvider>
   );
 }

packages/desktop/src/floating.tsx

@@ -0,0 +1,25 @@
+/**
+ * Floating Window Entry Point
+ * 悬浮窗口入口
+ */
+
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import { configureApiClient } from '@ai-assistant/ui';
+import { FloatingChat } from './pages/FloatingChat';
+import '@ai-assistant/ui/styles';
+// 悬浮窗使用专用样式，确保背景透明（放在最后以覆盖其他样式）
+import './styles/floating.css';
+
+// 配置 API 客户端
+configureApiClient({
+  baseUrl: 'http://localhost:3000/api',
+  wsBaseUrl: 'ws://localhost:3000/api',
+  healthUrl: 'http://localhost:3000/health',
+});
+
+ReactDOM.createRoot(document.getElementById('root')!).render(
+  <React.StrictMode>
+    <FloatingChat />
+  </React.StrictMode>
+);

packages/desktop/src/pages/Chat.tsx

@@ -3,7 +3,7 @@
  */
 
 import { useEffect, useRef } from 'react';
-import { WifiOff, MessageSquare, Settings, FolderOpen, Terminal, Plug, Zap, Bot, History, Server } from 'lucide-react';
+import { MessageSquare, Terminal, Plug, Zap, Bot, History, Server, MessagesSquare, Globe } from 'lucide-react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { toast } from 'sonner';
 import {
@@ -11,38 +11,66 @@ import {
   ChatMessage,
   TypingIndicator,
   ChatInput,
+  ContextUsage,
+  SubagentProgress,
+  DiagnosticsIndicator,
+  ToolbarOverflowMenu,
+  type ActiveFileInfo,
+  type FileDiffInfo,
 } from '@ai-assistant/ui';
 
 interface ChatPageProps {
   sessionId: string;
+  onSessionNotFound?: () => void;
   onSessionUpdated?: (sessionId: string, name: string) => void;
   /** 切换会话回调（如 :new 命令创建新会话） */
   onSessionSwitch?: (newSessionId: string) => void;
+  responsive?: boolean;
   // 工具栏按钮
-  showFileBrowser?: boolean;
-  onToggleFileBrowser?: () => void;
-  onOpenConfig?: () => void;
   onOpenCommands?: () => void;
   onOpenMCP?: () => void;
   onOpenHooks?: () => void;
   onOpenAgents?: () => void;
   onOpenCheckpoints?: () => void;
   onOpenProviders?: () => void;
+  onOpenServices?: () => void;
+  onOpenLSP?: () => void;
+  onOpenDiagnostics?: () => void;
+  onOpenSessions?: () => void;
+  // 编辑器联动
+  /** 当前编辑器活动文件 */
+  activeFile?: ActiveFileInfo | null;
+  /** 是否自动附加当前编辑器文件 */
+  autoAttachActiveFile?: boolean;
+  /** 自动附加开关变更回调 */
+  onAutoAttachActiveFileToggle?: (enabled: boolean) => void;
+  /** 文件 diff 回调（当 AI 写入/编辑文件时触发） */
+  onFileDiff?: (diff: FileDiffInfo) => void;
+  /** 查看文件 diff 回调（点击 View Diff 按钮） */
+  onViewDiff?: (diff: FileDiffInfo) => void;
 }
 
 export function ChatPage({
   sessionId,
+  onSessionNotFound,
   onSessionUpdated,
   onSessionSwitch,
-  showFileBrowser,
-  onToggleFileBrowser,
-  onOpenConfig,
+  responsive = false,
   onOpenCommands,
   onOpenMCP,
   onOpenHooks,
   onOpenAgents,
   onOpenCheckpoints,
   onOpenProviders,
+  onOpenServices,
+  onOpenLSP,
+  onOpenDiagnostics,
+  onOpenSessions,
+  activeFile,
+  autoAttachActiveFile,
+  onAutoAttachActiveFileToggle,
+  onFileDiff,
+  onViewDiff,
 }: ChatPageProps) {
   const {
     messages,
@@ -51,12 +79,21 @@ export function ChatPage({
     streamingMessage,
     sendMessage,
     cancelProcessing,
+    allowPermission,
+    denyPermission,
+    agentMode,
+    autoApprove,
+    setAgentMode,
+    setAutoApprove,
+    currentAgent,
+    currentSubagent,
     answerQuestion,
   } = useChat({
     sessionId,
     onError: (error) => {
       console.error('Chat error:', error);
     },
+    onSessionNotFound,
     onSessionUpdated,
     onSessionSwitch,
     onConfigError: (error) => {
@@ -70,6 +107,7 @@ export function ChatPage({
           : undefined,
       });
     },
+    onFileDiff,
   });
 
   const messagesEndRef = useRef<HTMLDivElement>(null);
@@ -91,11 +129,11 @@ export function ChatPage({
         <MessageSquare size={32} className="text-primary-400" />
       </div>
 
-      <h2 className="text-2xl font-semibold mb-2 bg-gradient-to-r from-white to-gray-400 bg-clip-text text-transparent">
+      <h2 className="text-2xl font-semibold mb-2 text-fg">
         Start a conversation
       </h2>
 
-      <p className="text-gray-400 mb-6 max-w-md mx-auto">
+      <p className="text-fg-muted mb-6 max-w-md mx-auto">
         Ask me anything about coding, debugging, or software development.
       </p>
 
@@ -106,7 +144,7 @@ export function ChatPage({
             whileHover={{ scale: 1.02 }}
             whileTap={{ scale: 0.98 }}
             onClick={() => sendMessage(suggestion)}
-            className="px-3 py-1.5 bg-gray-800 hover:bg-gray-700 rounded-full text-sm text-gray-300 transition-colors"
+            className="px-3 py-1.5 bg-surface-subtle hover:bg-surface-muted rounded-full text-sm text-fg-secondary transition-colors"
           >
             "{suggestion}"
           </motion.button>
@@ -115,152 +153,61 @@ export function ChatPage({
     </motion.div>
   );
 
-  // 连接状态指示器
-  const ConnectionStatus = () => (
-    <div className="flex items-center gap-1.5 text-sm">
-      {isConnected ? (
-        <motion.div
-          initial={{ opacity: 0 }}
-          animate={{ opacity: 1 }}
-          className="flex items-center gap-1.5"
-        >
-          <span className="relative flex h-2.5 w-2.5">
-            <span className="animate-ping absolute inline-flex h-full w-full rounded-full bg-green-400 opacity-75" />
-            <span className="relative inline-flex rounded-full h-2.5 w-2.5 bg-green-500" />
-          </span>
-          <span className="text-green-400">Connected</span>
-        </motion.div>
-      ) : (
-        <div className="flex items-center gap-1.5 text-red-400">
-          <WifiOff size={16} />
-          <span>Disconnected</span>
-        </div>
-      )}
-    </div>
-  );
-
   return (
-    <div className="flex-1 flex flex-col h-screen">
+    <div className="flex-1 flex flex-col h-full">
       {/* Header */}
-      <div className="flex items-center justify-between px-6 py-3 border-b border-gray-700 bg-gray-800">
-        <h1 className="text-lg font-medium">Chat</h1>
-        <div className="flex items-center gap-3">
-          {/* 连接状态 */}
-          <ConnectionStatus />
-
-          {/* 工具栏按钮 */}
-          {(onOpenConfig || onToggleFileBrowser || onOpenCommands || onOpenMCP || onOpenHooks || onOpenAgents || onOpenCheckpoints || onOpenProviders) && (
-            <div className="flex items-center gap-1.5 border-l border-gray-600 pl-3">
-              {/* Checkpoints 按钮 */}
-              {onOpenCheckpoints && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenCheckpoints}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="Checkpoints"
-                >
-                  <History size={20} />
-                </motion.button>
-              )}
-
-              {/* Providers 按钮 */}
-              {onOpenProviders && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenProviders}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="Model Providers"
-                >
-                  <Server size={20} />
-                </motion.button>
-              )}
-
-              {/* Agents 按钮 */}
-              {onOpenAgents && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenAgents}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="Agent Presets"
-                >
-                  <Bot size={20} />
-                </motion.button>
-              )}
-
-              {/* Hooks 按钮 */}
-              {onOpenHooks && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenHooks}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="Hooks"
-                >
-                  <Zap size={20} />
-                </motion.button>
-              )}
-
-              {/* MCP 按钮 */}
-              {onOpenMCP && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenMCP}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="MCP Servers"
-                >
-                  <Plug size={20} />
-                </motion.button>
-              )}
-
-              {/* 命令按钮 */}
-              {onOpenCommands && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenCommands}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="Commands"
-                >
-                  <Terminal size={20} />
-                </motion.button>
-              )}
-
-              {/* 配置按钮 */}
-              {onOpenConfig && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onOpenConfig}
-                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
-                  title="Settings"
-                >
-                  <Settings size={20} />
-                </motion.button>
-              )}
-
-              {/* 文件浏览器按钮 */}
-              {onToggleFileBrowser && (
-                <motion.button
-                  whileHover={{ scale: 1.1 }}
-                  whileTap={{ scale: 0.9 }}
-                  onClick={onToggleFileBrowser}
-                  className={`p-1.5 rounded-lg transition-colors ${
-                    showFileBrowser
-                      ? 'text-blue-400 bg-blue-500/20'
-                      : 'text-gray-400 hover:text-gray-200 hover:bg-gray-700'
-                  }`}
-                  title={showFileBrowser ? 'Hide Files' : 'Show Files'}
-                >
-                  <FolderOpen size={20} />
-                </motion.button>
-              )}
-            </div>
+      <div className="flex items-center justify-between px-4 md:px-6 py-3 border-b border-line bg-surface-subtle">
+        {/* 左侧：上下文使用情况 */}
+        <div className="flex items-center">
+          {sessionId && (
+            <ContextUsage
+              sessionId={sessionId}
+              compact
+              showCompressButton
+              refreshInterval={30000}
+            />
           )}
         </div>
+
+        {/* 右侧：工具栏按钮 */}
+        {(onOpenCommands || onOpenMCP || onOpenHooks || onOpenAgents || onOpenCheckpoints || onOpenProviders || onOpenLSP || onOpenDiagnostics || onOpenSessions) && (
+          <div className="flex items-center gap-1.5 flex-shrink-0">
+            {/* LSP 诊断指示器 */}
+            {(onOpenLSP || onOpenDiagnostics) && (
+              <DiagnosticsIndicator
+                onClickDiagnostics={onOpenDiagnostics}
+                onClickLSP={onOpenLSP}
+                refreshInterval={30000}
+              />
+            )}
+
+            {/* Sessions 按钮 */}
+            {onOpenSessions && (
+              <motion.button
+                whileHover={{ scale: 1.1 }}
+                whileTap={{ scale: 0.9 }}
+                onClick={onOpenSessions}
+                className="p-1.5 rounded-lg text-fg-muted hover:text-fg-secondary hover:bg-surface-muted transition-colors"
+                title="Sessions"
+              >
+                <MessagesSquare size={20} />
+              </motion.button>
+            )}
+
+            {/* 设置菜单 - 齿轮图标，放在最右侧 */}
+            <ToolbarOverflowMenu
+              items={[
+                { icon: History, label: 'Checkpoints', onClick: onOpenCheckpoints },
+                { icon: Server, label: 'Model Providers', onClick: onOpenProviders },
+                { icon: Globe, label: 'External Services', onClick: onOpenServices },
+                { icon: Bot, label: 'Agent Presets', onClick: onOpenAgents },
+                { icon: Zap, label: 'Hooks', onClick: onOpenHooks },
+                { icon: Plug, label: 'MCP Servers', onClick: onOpenMCP },
+                { icon: Terminal, label: 'Commands', onClick: onOpenCommands },
+              ]}
+            />
+          </div>
+        )}
       </div>
 
       {/* Messages */}
@@ -270,16 +217,35 @@ export function ChatPage({
 
           <AnimatePresence mode="popLayout">
             {messages.map((message) => (
-              <ChatMessage key={message.id} message={message} onAnswerQuestion={answerQuestion} />
+              <ChatMessage
+                key={message.id}
+                message={message}
+                onAnswerQuestion={answerQuestion}
+                onViewDiff={onViewDiff ?? onFileDiff}
+                onAllowPermission={allowPermission}
+                onDenyPermission={denyPermission}
+              />
             ))}
           </AnimatePresence>
 
           {/* 流式消息 - 复用 ChatMessage 组件 */}
           {streamingMessage && (
-            <ChatMessage message={streamingMessage} isStreaming onAnswerQuestion={answerQuestion} />
+            <ChatMessage
+              message={streamingMessage}
+              isStreaming
+              onAnswerQuestion={answerQuestion}
+              onViewDiff={onViewDiff ?? onFileDiff}
+              onAllowPermission={allowPermission}
+              onDenyPermission={denyPermission}
+            />
           )}
 
-          {isLoading && !streamingMessage && <TypingIndicator />}
+          {/* 子 Agent 进度显示 */}
+          {currentSubagent && (
+            <SubagentProgress subagent={currentSubagent} />
+          )}
+
+          {isLoading && !streamingMessage && !currentSubagent && <TypingIndicator agentName={currentAgent} />}
 
           <div ref={messagesEndRef} />
         </div>
@@ -291,7 +257,16 @@ export function ChatPage({
         onCancel={cancelProcessing}
         isLoading={isLoading}
         disabled={!isConnected}
+        responsive={responsive}
+        agentMode={agentMode}
+        onAgentModeChange={setAgentMode}
+        autoApprove={autoApprove}
+        onAutoApproveChange={setAutoApprove}
+        activeFile={activeFile}
+        autoAttachActiveFile={autoAttachActiveFile}
+        onAutoAttachActiveFileToggle={onAutoAttachActiveFileToggle}
       />
+
     </div>
   );
 }

packages/desktop/src/pages/FloatingChat.tsx

@@ -0,0 +1,375 @@
+/**
+ * Floating Chat Window
+ * 圆形悬浮球，点击展开对话框
+ */
+
+import { useState, useEffect, useRef, useCallback } from 'react';
+import { invoke } from '@tauri-apps/api/core';
+import { getCurrentWindow } from '@tauri-apps/api/window';
+import { Send, X, Maximize2, Loader2, ChevronDown } from 'lucide-react';
+import { motion, AnimatePresence } from 'framer-motion';
+import {
+  useChat,
+  ChatMessage,
+  ThemeProvider,
+  Toaster,
+} from '@ai-assistant/ui';
+
+// 窗口尺寸常量
+const BALL_SIZE = 60;
+const EXPANDED_WIDTH = 400;
+const EXPANDED_HEIGHT = 500;
+
+export function FloatingChat() {
+  const [isExpanded, setIsExpanded] = useState(false);
+  const [isAnimating, setIsAnimating] = useState(false);
+  const [sessionId, setSessionId] = useState<string | null>(null);
+  const [input, setInput] = useState('');
+  const inputRef = useRef<HTMLTextAreaElement>(null);
+  const messagesEndRef = useRef<HTMLDivElement>(null);
+
+  const {
+    messages,
+    isConnected,
+    isLoading,
+    streamingMessage,
+    sendMessage,
+    cancelProcessing,
+  } = useChat({
+    sessionId: sessionId || '',
+    onError: (error) => {
+      console.error('Chat error:', error);
+    },
+  });
+
+  // 初始化：获取或创建会话
+  useEffect(() => {
+    async function init() {
+      try {
+        const response = await fetch('http://localhost:3000/api/sessions');
+        const result = await response.json();
+        if (result.data && result.data.length > 0) {
+          setSessionId(result.data[0].id);
+        } else {
+          const createResponse = await fetch('http://localhost:3000/api/sessions', {
+            method: 'POST',
+          });
+          const createResult = await createResponse.json();
+          setSessionId(createResult.data.id);
+        }
+      } catch (error) {
+        console.error('Failed to initialize session:', error);
+      }
+    }
+    init();
+  }, []);
+
+  // 自动滚动到底部
+  useEffect(() => {
+    if (isExpanded) {
+      messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' });
+    }
+  }, [messages, streamingMessage, isExpanded]);
+
+  // 展开时聚焦输入框
+  useEffect(() => {
+    if (isExpanded && sessionId) {
+      setTimeout(() => inputRef.current?.focus(), 100);
+    }
+  }, [isExpanded, sessionId]);
+
+  // 展开/收起窗口（带动画）
+  const toggleExpanded = useCallback(async () => {
+    if (isAnimating) return;
+
+    const newExpanded = !isExpanded;
+    setIsAnimating(true);
+
+    if (newExpanded) {
+      // 展开：先调整窗口大小，再显示内容动画
+      await invoke('set_floating_window_size', { width: EXPANDED_WIDTH, height: EXPANDED_HEIGHT });
+      setIsExpanded(true);
+      // 动画完成后
+      setTimeout(() => setIsAnimating(false), 300);
+    } else {
+      // 收起：先播放收起动画，再调整窗口大小
+      setIsExpanded(false);
+      setTimeout(async () => {
+        await invoke('set_floating_window_size', { width: BALL_SIZE, height: BALL_SIZE });
+        setIsAnimating(false);
+      }, 200);
+    }
+  }, [isExpanded, isAnimating]);
+
+  const handleSend = useCallback(() => {
+    if (!input.trim() || isLoading) return;
+    sendMessage(input.trim());
+    setInput('');
+  }, [input, isLoading, sendMessage]);
+
+  const handleKeyDown = useCallback((e: React.KeyboardEvent) => {
+    if (e.key === 'Enter' && !e.shiftKey) {
+      e.preventDefault();
+      handleSend();
+    }
+    // Escape 收起窗口
+    if (e.key === 'Escape') {
+      if (isExpanded) {
+        toggleExpanded();
+      } else {
+        invoke('hide_floating_window');
+      }
+    }
+  }, [handleSend, isExpanded, toggleExpanded]);
+
+  const handleClose = useCallback(() => {
+    invoke('hide_floating_window');
+  }, []);
+
+  const handleExpandToMain = useCallback(() => {
+    invoke('show_main_window');
+    invoke('hide_floating_window');
+  }, []);
+
+  // 区分点击和拖拽
+  const isDraggingRef = useRef(false);
+  const mouseDownPosRef = useRef({ x: 0, y: 0 });
+
+  const handleMouseDown = useCallback((e: React.MouseEvent) => {
+    isDraggingRef.current = false;
+    mouseDownPosRef.current = { x: e.clientX, y: e.clientY };
+  }, []);
+
+  const handleMouseMove = useCallback((e: React.MouseEvent) => {
+    const dx = Math.abs(e.clientX - mouseDownPosRef.current.x);
+    const dy = Math.abs(e.clientY - mouseDownPosRef.current.y);
+    // 移动超过 5px 认为是拖拽
+    if (dx > 5 || dy > 5) {
+      isDraggingRef.current = true;
+    }
+  }, []);
+
+  const handleClick = useCallback(() => {
+    // 如果是拖拽操作，不触发展开
+    if (isDraggingRef.current) {
+      return;
+    }
+    toggleExpanded();
+  }, [toggleExpanded]);
+
+  // 窗口拖拽
+  const handleDragStart = useCallback(async (e: React.MouseEvent) => {
+    e.preventDefault();
+    const appWindow = getCurrentWindow();
+    await appWindow.startDragging();
+  }, []);
+
+  // 状态指示点颜色
+  const statusColor = !isConnected
+    ? 'bg-yellow-400' // 连接中
+    : isLoading
+    ? 'bg-blue-400'   // 处理中
+    : 'bg-green-400'; // 就绪
+
+  // 圆球状态 - 不使用 ThemeProvider，保持背景完全透明
+  if (!isExpanded) {
+    return (
+      <div
+        className="relative w-[60px] h-[60px] cursor-pointer select-none flex items-center justify-center"
+        onMouseDown={(e) => {
+          handleMouseDown(e);
+          handleDragStart(e);
+        }}
+        onMouseMove={handleMouseMove}
+        onClick={handleClick}
+      >
+        {/* 主体球 - 玻璃拟态，使用固定尺寸避免放大溢出 */}
+        <motion.div
+          className="relative rounded-full flex items-center justify-center cursor-pointer overflow-hidden"
+          style={{
+            backgroundColor: 'rgba(209, 213, 219, 0.95)',
+            border: '1px solid rgba(255, 255, 255, 0.5)',
+            width: 52,
+            height: 52,
+          }}
+          whileHover={{ scale: 1.12 }}
+          whileTap={{ scale: 0.92 }}
+        >
+          {/* 内部渐变光泽 */}
+          <div
+            className="absolute inset-0 rounded-full"
+            style={{
+              background: 'linear-gradient(to bottom right, rgba(255,255,255,0.35), transparent, rgba(0,0,0,0.1))',
+            }}
+          />
+
+          {/* 内部呼吸灯效果 */}
+          <motion.div
+            className="absolute inset-0 rounded-full"
+            style={{
+              background: 'radial-gradient(circle at center, rgba(255, 255, 255, 0.4), transparent 70%)',
+            }}
+            animate={{
+              opacity: [0.3, 0.6, 0.3],
+            }}
+            transition={{
+              duration: 3,
+              repeat: Infinity,
+              ease: 'easeInOut',
+            }}
+          />
+
+          {/* 顶部高光 */}
+          <div
+            className="absolute top-1.5 left-1/2 -translate-x-1/2 w-7 h-2 rounded-full"
+            style={{
+              backgroundColor: 'rgba(255, 255, 255, 0.35)',
+              filter: 'blur(2px)',
+            }}
+          />
+
+          {/* 图标 - 简约机器人头 */}
+          {isLoading ? (
+            <Loader2 size={26} className="animate-spin relative z-10" style={{ color: 'rgba(255, 255, 255, 0.95)' }} />
+          ) : (
+            <svg
+              width="30"
+              height="30"
+              viewBox="0 0 24 24"
+              fill="none"
+              className="relative z-10"
+            >
+              {/* 天线 */}
+              <circle cx="12" cy="3" r="1.5" fill="rgba(255, 255, 255, 0.9)" />
+              <line x1="12" y1="4.5" x2="12" y2="7" stroke="rgba(255, 255, 255, 0.9)" strokeWidth="1.5" strokeLinecap="round" />
+
+              {/* 头部 */}
+              <rect x="4" y="7" width="16" height="13" rx="4" fill="rgba(255, 255, 255, 0.15)" stroke="rgba(255, 255, 255, 0.9)" strokeWidth="1.5" />
+
+              {/* 眼睛 */}
+              <circle cx="8.5" cy="13" r="2" fill="rgba(255, 255, 255, 0.9)" />
+              <circle cx="15.5" cy="13" r="2" fill="rgba(255, 255, 255, 0.9)" />
+
+              {/* 嘴巴 */}
+              <line x1="9" y1="17" x2="15" y2="17" stroke="rgba(255, 255, 255, 0.9)" strokeWidth="1.5" strokeLinecap="round" />
+            </svg>
+          )}
+
+        </motion.div>
+      </div>
+    );
+  }
+
+  // 展开状态
+  return (
+    <ThemeProvider defaultTheme="dark">
+      <motion.div
+        className="w-full h-full flex flex-col bg-surface-base/95 backdrop-blur-xl rounded-2xl border border-line/50 shadow-2xl overflow-hidden"
+        initial={{ opacity: 0 }}
+        animate={{ opacity: 1 }}
+        transition={{ duration: 0.15 }}
+      >
+        {/* 顶部拖拽区域和工具栏 */}
+        <div
+          className="flex items-center justify-between px-3 py-2 border-b border-line/50 cursor-move select-none bg-surface-subtle/50"
+          onMouseDown={handleDragStart}
+        >
+          <div className="flex items-center gap-2">
+            <motion.button
+              whileHover={{ scale: 1.1 }}
+              whileTap={{ scale: 0.9 }}
+              onClick={toggleExpanded}
+              className="p-1 rounded hover:bg-surface-muted text-fg-muted hover:text-fg transition-colors"
+              title="Collapse"
+            >
+              <ChevronDown size={16} />
+            </motion.button>
+            <span className="text-xs font-medium text-fg-muted">Quick Ask</span>
+          </div>
+          <div className="flex items-center gap-1">
+            <motion.button
+              whileHover={{ scale: 1.1 }}
+              whileTap={{ scale: 0.9 }}
+              onClick={handleExpandToMain}
+              className="p-1 rounded hover:bg-surface-muted text-fg-muted hover:text-fg transition-colors"
+              title="Open in main window"
+            >
+              <Maximize2 size={14} />
+            </motion.button>
+            <motion.button
+              whileHover={{ scale: 1.1 }}
+              whileTap={{ scale: 0.9 }}
+              onClick={handleClose}
+              className="p-1 rounded hover:bg-red-500/20 text-fg-muted hover:text-red-400 transition-colors"
+              title="Hide"
+            >
+              <X size={14} />
+            </motion.button>
+          </div>
+        </div>
+
+        {/* 消息区域 */}
+        <div className="flex-1 overflow-y-auto p-3 space-y-3">
+          {messages.length === 0 && !streamingMessage && (
+            <div className="text-center text-fg-muted text-sm py-8">
+              Ask me anything...
+            </div>
+          )}
+
+          <AnimatePresence mode="popLayout">
+            {messages.map((message) => (
+              <ChatMessage
+                key={message.id}
+                message={message}
+              />
+            ))}
+          </AnimatePresence>
+
+          {streamingMessage && (
+            <ChatMessage
+              message={streamingMessage}
+              isStreaming
+            />
+          )}
+
+          <div ref={messagesEndRef} />
+        </div>
+
+        {/* 输入区域 */}
+        <div className="p-3 border-t border-line/50 bg-surface-subtle/30">
+          <div className="flex items-end gap-2">
+            <textarea
+              ref={inputRef}
+              value={input}
+              onChange={(e) => setInput(e.target.value)}
+              onKeyDown={handleKeyDown}
+              placeholder="Ask a question... (Enter to send)"
+              className="flex-1 resize-none bg-surface-subtle border border-line rounded-lg px-3 py-2 text-sm text-fg placeholder:text-fg-muted focus:outline-none focus:ring-2 focus:ring-primary-500/50 min-h-[40px] max-h-[120px]"
+              rows={1}
+              disabled={!isConnected}
+            />
+            <motion.button
+              whileHover={{ scale: 1.05 }}
+              whileTap={{ scale: 0.95 }}
+              onClick={isLoading ? cancelProcessing : handleSend}
+              disabled={!isConnected || (!input.trim() && !isLoading)}
+              className={`p-2 rounded-lg transition-colors ${
+                isLoading
+                  ? 'bg-red-500 hover:bg-red-600 text-white'
+                  : 'bg-primary-500 hover:bg-primary-600 text-white disabled:bg-surface-muted disabled:text-fg-muted'
+              }`}
+            >
+              {isLoading ? (
+                <Loader2 size={18} className="animate-spin" />
+              ) : (
+                <Send size={18} />
+              )}
+            </motion.button>
+          </div>
+        </div>
+
+        <Toaster />
+      </motion.div>
+    </ThemeProvider>
+  );
+}

packages/desktop/src/styles/floating.css

@@ -0,0 +1,18 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+/* 悬浮窗专用样式 - 确保背景完全透明 (macOS 需要 rgba(0,0,0,0)) */
+html, body, #root {
+  margin: 0;
+  padding: 0;
+  background-color: rgba(0, 0, 0, 0) !important;
+  background: rgba(0, 0, 0, 0) !important;
+  overflow: hidden;
+}
+
+/* 覆盖可能的 dark 主题背景 */
+.dark, [data-theme="dark"] {
+  background-color: rgba(0, 0, 0, 0) !important;
+  background: rgba(0, 0, 0, 0) !important;
+}

packages/desktop/src/styles/index.css

@@ -2,77 +2,14 @@
 @tailwind components;
 @tailwind utilities;
 
-/* Custom scrollbar */
-::-webkit-scrollbar {
-  width: 8px;
-  height: 8px;
+/* 导入 UI 包的共享样式会在 main.tsx 中通过 import '@ai-assistant/ui/styles' 完成 */
+/* 此文件仅包含 desktop 特有的样式覆盖 */
+
+/* Desktop 特有的 Tauri 窗口拖拽区域 */
+.titlebar-drag-region {
+  -webkit-app-region: drag;
 }
 
-::-webkit-scrollbar-track {
-  background: transparent;
-}
-
-::-webkit-scrollbar-thumb {
-  background: #4b5563;
-  border-radius: 4px;
-}
-
-::-webkit-scrollbar-thumb:hover {
-  background: #6b7280;
-}
-
-/* Message content */
-.message-content {
-  @apply max-w-none text-gray-100;
-}
-
-.message-content pre {
-  @apply bg-gray-800 rounded-lg p-4 overflow-x-auto;
-}
-
-.message-content code {
-  @apply bg-gray-800 px-1.5 py-0.5 rounded text-sm;
-}
-
-.message-content pre code {
-  @apply bg-transparent p-0;
-}
-
-/* Typing indicator */
-.typing-indicator {
-  display: flex;
-  gap: 4px;
-}
-
-.typing-indicator span {
-  width: 8px;
-  height: 8px;
-  background: #6b7280;
-  border-radius: 50%;
-  animation: typing 1.4s infinite ease-in-out;
-}
-
-.typing-indicator span:nth-child(1) {
-  animation-delay: 0s;
-}
-
-.typing-indicator span:nth-child(2) {
-  animation-delay: 0.2s;
-}
-
-.typing-indicator span:nth-child(3) {
-  animation-delay: 0.4s;
-}
-
-@keyframes typing {
-  0%,
-  80%,
-  100% {
-    transform: scale(1);
-    opacity: 0.5;
-  }
-  40% {
-    transform: scale(1.2);
-    opacity: 1;
-  }
+.no-drag {
+  -webkit-app-region: no-drag;
 }

packages/desktop/tailwind.config.js

@@ -9,6 +9,26 @@ export default {
   theme: {
     extend: {
       colors: {
+        // 语义化颜色 (引用 CSS 变量)
+        surface: {
+          base: 'rgb(var(--color-bg-base) / <alpha-value>)',
+          subtle: 'rgb(var(--color-bg-subtle) / <alpha-value>)',
+          muted: 'rgb(var(--color-bg-muted) / <alpha-value>)',
+          emphasis: 'rgb(var(--color-bg-emphasis) / <alpha-value>)',
+        },
+        fg: {
+          DEFAULT: 'rgb(var(--color-text-primary) / <alpha-value>)',
+          secondary: 'rgb(var(--color-text-secondary) / <alpha-value>)',
+          muted: 'rgb(var(--color-text-muted) / <alpha-value>)',
+          subtle: 'rgb(var(--color-text-subtle) / <alpha-value>)',
+        },
+        line: {
+          DEFAULT: 'rgb(var(--color-border-default) / <alpha-value>)',
+          muted: 'rgb(var(--color-border-muted) / <alpha-value>)',
+        },
+        // 代码块背景
+        code: 'rgb(var(--color-code-bg) / <alpha-value>)',
+        // 保留现有 primary 色板
         primary: {
           50: '#f0f9ff',
           100: '#e0f2fe',

packages/desktop/vite.config.ts

@@ -1,6 +1,7 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
 import path from 'path';
+import { resolve } from 'path';
 
 const host = process.env.TAURI_DEV_HOST;
 
@@ -43,5 +44,11 @@ export default defineConfig({
     minify: !process.env.TAURI_DEBUG ? 'esbuild' : false,
     sourcemap: !!process.env.TAURI_DEBUG,
     outDir: 'dist',
+    rollupOptions: {
+      input: {
+        main: resolve(__dirname, 'index.html'),
+        floating: resolve(__dirname, 'floating.html'),
+      },
+    },
   },
 });

packages/server/package.json

@@ -13,6 +13,8 @@
   },
   "scripts": {
     "build": "tsc",
+    "build:bundle": "bun build src/bin/server.ts --target bun --outfile dist/server.bundle.js",
+    "build:standalone": "bun build src/bin/server.ts --compile --outfile dist/ai-server",
     "dev": "tsc --watch",
     "start": "bun run src/bin/server.ts",
     "start:dev": "bun --watch run src/bin/server.ts",

packages/server/src/agent/adapter.ts

@@ -421,7 +421,7 @@ export async function processMessage(
       });
     });
 
-    // 发送完成消息
+    // 发送完成消息（包含 token 使用信息）
     broadcastToSession(sessionId, {
       type: 'done',
       sessionId,
@@ -430,6 +430,13 @@ export async function processMessage(
         hasToolCalls,
         messageCount: result.messages.length,
         agentName: options?.agentMode || 'build',
+        usage: result.usage ? {
+          inputTokens: result.usage.promptTokens,
+          outputTokens: result.usage.completionTokens,
+          totalTokens: result.usage.totalTokens,
+          cacheReadTokens: result.usage.cacheReadInputTokens,
+          cacheWriteTokens: result.usage.cacheCreationInputTokens,
+        } : undefined,
       },
     });
 

packages/server/src/bin/server.ts

@@ -14,12 +14,13 @@
 import { app, websocket, startServer } from '../index.js';
 
 // 解析命令行参数
-function parseArgs(): { port: number; host: string; auth?: boolean; token?: string } {
+function parseArgs(): { port: number; host: string; auth?: boolean; token?: string; staticDir?: string } {
   const args = process.argv.slice(2);
   let port = 3000;
   let host = '127.0.0.1';
   let auth: boolean | undefined;
   let token: string | undefined;
+  let staticDir: string | undefined;
 
   for (let i = 0; i < args.length; i++) {
     if (args[i] === '--port' || args[i] === '-p') {
@@ -35,44 +36,51 @@ function parseArgs(): { port: number; host: string; auth?: boolean; token?: stri
     } else if (args[i] === '--token' || args[i] === '-t') {
       token = args[i + 1];
       i++;
+    } else if (args[i] === '--static' || args[i] === '-s') {
+      staticDir = args[i + 1];
+      i++;
     } else if (args[i] === '--help' || args[i] === '-h') {
       console.log(`
 AI Assistant Server
 
 Usage:
-  bun run server.ts [options]
+  ai-server [options]
 
 Options:
-  -p, --port <port>    Port to listen on (default: 3000)
-  -H, --host <host>    Host to bind to (default: 127.0.0.1)
-  --auth               Enable authentication
-  --no-auth            Disable authentication
-  -t, --token <token>  Set authentication token
-  -h, --help           Show this help message
+  -p, --port <port>      Port to listen on (default: 3000)
+  -H, --host <host>      Host to bind to (default: 127.0.0.1)
+  -s, --static <dir>     Serve static files from directory (Web UI)
+  --auth                 Enable authentication
+  --no-auth              Disable authentication
+  -t, --token <token>    Set authentication token
+  -h, --help             Show this help message
 
 Examples:
   # Local development (no auth)
-  bun run server.ts
+  ai-server
+
+  # Serve with Web UI
+  ai-server --static ./web-dist
 
   # Remote server with auth
-  bun run server.ts --host 0.0.0.0 --auth
+  ai-server --host 0.0.0.0 --auth
 
-  # Custom token
-  bun run server.ts --host 0.0.0.0 --token mysecrettoken
+  # Full production setup
+  ai-server --host 0.0.0.0 --static ./web-dist --token mysecrettoken
       `);
       process.exit(0);
     }
   }
 
-  return { port, host, auth, token };
+  return { port, host, auth, token, staticDir };
 }
 
 // 主函数
 async function main() {
-  const { port, host, auth, token } = parseArgs();
+  const { port, host, auth, token, staticDir } = parseArgs();
 
   // 初始化并打印启动信息
-  await startServer({ port, host, auth, token });
+  await startServer({ port, host, auth, token, staticDir });
 
   // 启动 Bun 服务器
   const server = Bun.serve({

packages/server/src/bin/standalone.ts

@@ -0,0 +1,320 @@
+#!/usr/bin/env bun
+/**
+ * AI Assistant Standalone Server
+ *
+ * 包含嵌入式 Web UI 的独立服务器
+ * 由 scripts/build-standalone.ts 构建
+ */
+
+import { Hono } from 'hono';
+import { cors } from 'hono/cors';
+import { logger } from 'hono/logger';
+import { createBunWebSocket } from 'hono/bun';
+
+import {
+  sessionsRouter,
+  toolsRouter,
+  configRouter,
+  filesRouter,
+  commandsRouter,
+  mcpRouter,
+  hooksRouter,
+  agentsRouter,
+  checkpointsRouter,
+  providersRouter,
+  servicesRouter,
+  contextRouter,
+  lspRouter,
+  systemCommandsRouter,
+  statsRouter,
+} from '../routes/index.js';
+import {
+  handleWebSocket,
+  handleWebSocketMessage,
+  handleWebSocketClose,
+  getConnectionStats,
+} from '../ws.js';
+import { handleSSE, getSSEStats } from '../sse.js';
+import { getSessionManager } from '../session/manager.js';
+import { initCore, isCoreAvailable } from '../agent/index.js';
+import {
+  authMiddleware,
+  initAuth,
+  getAuthConfig,
+  generateToken,
+  addToken,
+} from '../auth/index.js';
+
+// 嵌入的 Web 资源（构建时生成）
+import { EMBEDDED_ASSETS, decodeAsset } from '../embedded-assets.generated.js';
+// 嵌入的 WASM 文件（构建时生成）
+import { EMBEDDED_WASM } from '../embedded-wasm.generated.js';
+
+// 创建 Hono 应用
+const app = new Hono();
+
+// WebSocket 升级
+const { upgradeWebSocket, websocket } = createBunWebSocket();
+
+// 中间件
+app.use('*', logger());
+app.use(
+  '*',
+  cors({
+    origin: '*',
+    allowMethods: ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'],
+    allowHeaders: ['Content-Type', 'Authorization'],
+  })
+);
+
+// 认证中间件
+app.use('*', authMiddleware);
+
+// 健康检查
+app.get('/health', (c) => {
+  const sessionManager = getSessionManager();
+  const wsStats = getConnectionStats();
+  const sseStats = getSSEStats();
+  const authConfig = getAuthConfig();
+
+  return c.json({
+    status: 'ok',
+    timestamp: new Date().toISOString(),
+    agent: {
+      coreAvailable: isCoreAvailable(),
+    },
+    auth: {
+      enabled: authConfig.enabled,
+      tokenCount: authConfig.tokens.length,
+    },
+    stats: {
+      sessions: sessionManager.count(),
+      websocket: wsStats,
+      sse: sseStats,
+    },
+  });
+});
+
+// API 路由
+const api = new Hono();
+api.route('/sessions', sessionsRouter);
+api.route('/tools', toolsRouter);
+api.route('/config', configRouter);
+api.route('/files', filesRouter);
+api.route('/commands', commandsRouter);
+api.route('/mcp', mcpRouter);
+api.route('/hooks', hooksRouter);
+api.route('/agents', agentsRouter);
+api.route('/checkpoints', checkpointsRouter);
+api.route('/providers', providersRouter);
+api.route('/services', servicesRouter);
+api.route('/lsp', lspRouter);
+api.route('/system-commands', systemCommandsRouter);
+api.route('/stats', statsRouter);
+api.route('/', contextRouter);
+
+// SSE 事件流
+api.get('/sessions/:id/events', handleSSE);
+
+// WebSocket 端点
+api.get(
+  '/ws/:sessionId',
+  upgradeWebSocket((c) => {
+    const sessionId = c.req.param('sessionId');
+    return {
+      onOpen(_event, ws) {
+        handleWebSocket(ws, sessionId);
+      },
+      onMessage(event, ws) {
+        handleWebSocketMessage(ws, sessionId, event.data);
+      },
+      onClose(_event, ws) {
+        handleWebSocketClose(ws, sessionId);
+      },
+      onError(event, ws) {
+        console.error('[WS] Error:', event);
+        handleWebSocketClose(ws, sessionId);
+      },
+    };
+  })
+);
+
+app.route('/api', api);
+
+// 嵌入式 Web UI 静态文件服务
+app.get('*', (c) => {
+  let reqPath = c.req.path;
+
+  // 尝试查找精确匹配
+  let asset = EMBEDDED_ASSETS.get(reqPath);
+
+  // 如果没找到且不是文件路径，尝试 index.html (SPA 路由)
+  if (!asset && !reqPath.includes('.')) {
+    asset = EMBEDDED_ASSETS.get('/index.html');
+  }
+
+  if (asset) {
+    const body = decodeAsset(asset);
+    return new Response(body, {
+      headers: {
+        'Content-Type': asset.mimeType,
+        'Cache-Control': reqPath.includes('/assets/') ? 'public, max-age=31536000' : 'no-cache',
+      },
+    });
+  }
+
+  return c.json({ success: false, error: 'Not found' }, 404);
+});
+
+// 解析命令行参数
+function parseArgs(): { port: number; host: string; auth?: boolean; token?: string } {
+  const args = process.argv.slice(2);
+  let port = 3000;
+  let host = '127.0.0.1';
+  let auth: boolean | undefined;
+  let token: string | undefined;
+
+  for (let i = 0; i < args.length; i++) {
+    if (args[i] === '--port' || args[i] === '-p') {
+      port = parseInt(args[i + 1], 10) || 3000;
+      i++;
+    } else if (args[i] === '--host' || args[i] === '-H') {
+      host = args[i + 1] || '127.0.0.1';
+      i++;
+    } else if (args[i] === '--auth') {
+      auth = true;
+    } else if (args[i] === '--no-auth') {
+      auth = false;
+    } else if (args[i] === '--token' || args[i] === '-t') {
+      token = args[i + 1];
+      i++;
+    } else if (args[i] === '--help' || args[i] === '-h') {
+      console.log(`
+AI Assistant (Standalone)
+
+A terminal-based AI coding assistant with embedded Web UI.
+
+Usage:
+  ai-assistant [options]
+
+Options:
+  -p, --port <port>      Port to listen on (default: 3000)
+  -H, --host <host>      Host to bind to (default: 127.0.0.1)
+  --auth                 Enable authentication
+  --no-auth              Disable authentication
+  -t, --token <token>    Set authentication token
+  -h, --help             Show this help message
+
+Examples:
+  # Local development
+  ai-assistant
+
+  # Listen on all interfaces with auth
+  ai-assistant --host 0.0.0.0 --auth
+
+  # Custom port and token
+  ai-assistant --port 8080 --token mysecrettoken
+
+After starting, open http://localhost:<port> in your browser.
+      `);
+      process.exit(0);
+    }
+  }
+
+  return { port, host, auth, token };
+}
+
+// 主函数
+async function main() {
+  const { port, host, auth, token } = parseArgs();
+
+  // 初始化嵌入的 WASM（在 Core 初始化之前）
+  if (EMBEDDED_WASM.size > 0) {
+    try {
+      // 动态导入 core 模块来设置 WASM
+      const core = await import('@ai-assistant/core');
+      if (typeof core.setEmbeddedWasm === 'function') {
+        core.setEmbeddedWasm(EMBEDDED_WASM);
+        console.log(`[Server] Embedded WASM initialized (${EMBEDDED_WASM.size} files)`);
+      }
+    } catch (error) {
+      console.warn('[Server] Failed to initialize embedded WASM:', error);
+    }
+  }
+
+  // 初始化 SessionManager
+  const sessionManager = getSessionManager();
+  await sessionManager.init();
+
+  // 初始化 Core
+  const coreLoaded = await initCore();
+  if (coreLoaded) {
+    console.log('[Server] Core module initialized');
+  } else {
+    console.warn('[Server] Core module not available, running in limited mode');
+  }
+
+  // 初始化认证
+  const isRemote = host !== '127.0.0.1' && host !== 'localhost';
+  const authEnabled = auth !== undefined ? auth : isRemote;
+
+  initAuth({
+    enabled: authEnabled,
+    tokens: [],
+    skipPaths: ['/health', '/api/health'],
+  });
+
+  if (authEnabled) {
+    const serverToken = token || generateToken();
+    addToken(serverToken);
+    console.log(`[Auth] Authentication enabled`);
+    console.log(`[Auth] Token: ${serverToken}`);
+  }
+
+  const coreStatus = isCoreAvailable() ? '✅ Core loaded' : '⚠️  Core not available';
+  const authConfig = getAuthConfig();
+  const authStatus = authConfig.enabled ? '🔐 Enabled' : '🔓 Disabled';
+
+  console.log(`
+╔════════════════════════════════════════════╗
+║     AI Assistant (Standalone)              ║
+╠════════════════════════════════════════════╣
+║  Web UI:      http://${host}:${port}
+║  REST API:    http://${host}:${port}/api
+║  WebSocket:   ws://${host}:${port}/api/ws/:sessionId
+║  Health:      http://${host}:${port}/health
+║  Agent:       ${coreStatus}
+║  Auth:        ${authStatus}
+║  Web UI:      📦 Embedded
+╚════════════════════════════════════════════╝
+  `);
+
+  // 启动服务器
+  const server = Bun.serve({
+    port,
+    hostname: host,
+    fetch: app.fetch,
+    websocket,
+  });
+
+  console.log(`Server running at http://${host}:${port}`);
+  console.log(`Open http://${host === '0.0.0.0' ? 'localhost' : host}:${port} in your browser\n`);
+
+  // 优雅关闭
+  process.on('SIGINT', () => {
+    console.log('\nShutting down server...');
+    server.stop();
+    process.exit(0);
+  });
+
+  process.on('SIGTERM', () => {
+    console.log('\nShutting down server...');
+    server.stop();
+    process.exit(0);
+  });
+}
+
+main().catch((error) => {
+  console.error('Failed to start server:', error);
+  process.exit(1);
+});

packages/server/src/index.ts

@@ -7,9 +7,10 @@
 import { Hono } from 'hono';
 import { cors } from 'hono/cors';
 import { logger } from 'hono/logger';
+import { serveStatic } from 'hono/bun';
 import { createBunWebSocket } from 'hono/bun';
 
-import { sessionsRouter, toolsRouter, configRouter, filesRouter, commandsRouter, mcpRouter, hooksRouter, agentsRouter, checkpointsRouter, providersRouter, servicesRouter, contextRouter, lspRouter, systemCommandsRouter } from './routes/index.js';
+import { sessionsRouter, toolsRouter, configRouter, filesRouter, commandsRouter, mcpRouter, hooksRouter, agentsRouter, checkpointsRouter, providersRouter, servicesRouter, contextRouter, lspRouter, systemCommandsRouter, statsRouter } from './routes/index.js';
 import {
   handleWebSocket,
   handleWebSocketMessage,
@@ -91,6 +92,7 @@ api.route('/providers', providersRouter);
 api.route('/services', servicesRouter);
 api.route('/lsp', lspRouter);
 api.route('/system-commands', systemCommandsRouter);
+api.route('/stats', statsRouter);
 
 // 上下文压缩相关（挂载到根路径，内部路由包含 /sessions/:id/context）
 api.route('/', contextRouter);
@@ -157,6 +159,8 @@ export interface ServerOptions {
   auth?: boolean;
   /** 预设的 token */
   token?: string;
+  /** 静态文件目录 (托管 Web UI) */
+  staticDir?: string;
 }
 
 /**
@@ -209,18 +213,63 @@ export async function initServer(options: ServerOptions = {}): Promise<void> {
   }
 }
 
+/**
+ * 配置静态文件托管
+ */
+export function configureStaticFiles(staticDir: string): void {
+  // 静态文件中间件
+  app.use(
+    '/*',
+    serveStatic({
+      root: staticDir,
+      rewriteRequestPath: (path) => {
+        // API 和健康检查路径不走静态文件
+        if (path.startsWith('/api') || path === '/health') {
+          return path;
+        }
+        return path;
+      },
+    })
+  );
+
+  // SPA 路由回退 - 所有非 API/静态文件请求返回 index.html
+  app.get('*', async (c) => {
+    const path = c.req.path;
+    // 跳过 API 和健康检查
+    if (path.startsWith('/api') || path === '/health') {
+      return c.notFound();
+    }
+
+    // 返回 index.html
+    const indexPath = `${staticDir}/index.html`;
+    const file = Bun.file(indexPath);
+    if (await file.exists()) {
+      return new Response(file, {
+        headers: { 'Content-Type': 'text/html' },
+      });
+    }
+    return c.notFound();
+  });
+}
+
 /**
  * 启动服务器 (Bun 环境)
  */
 export async function startServer(options: ServerOptions = {}): Promise<void> {
-  const { port = 3000, host = '127.0.0.1' } = options;
+  const { port = 3000, host = '127.0.0.1', staticDir } = options;
 
   // 初始化
   await initServer(options);
 
+  // 配置静态文件托管
+  if (staticDir) {
+    configureStaticFiles(staticDir);
+  }
+
   const coreStatus = isCoreAvailable() ? '✅ Core loaded' : '⚠️  Core not available';
   const authConfig = getAuthConfig();
   const authStatus = authConfig.enabled ? '🔐 Enabled' : '🔓 Disabled';
+  const staticStatus = staticDir ? `📁 ${staticDir}` : '❌ Disabled';
 
   console.log(`
 ╔════════════════════════════════════════════╗
@@ -232,6 +281,7 @@ export async function startServer(options: ServerOptions = {}): Promise<void> {
 ║  Health:      http://${host}:${port}/health
 ║  Agent:       ${coreStatus}
 ║  Auth:        ${authStatus}
+║  Static:      ${staticStatus}
 ╚════════════════════════════════════════════╝
   `);
 

packages/server/src/routes/agents.ts

@@ -9,7 +9,6 @@ import { getConfig } from './config.js';
 import type {
   AgentMode,
   AgentInfo,
-  AgentConfigFile,
   AgentModelConfig,
   AgentPermission,
 } from '@ai-assistant/core';

packages/server/src/routes/checkpoints.ts

@@ -6,20 +6,7 @@
 
 import { Hono } from 'hono';
 import { getConfig } from './config.js';
-import type {
-  CheckpointMetadata,
-  CheckpointConfig,
-  CheckpointTrigger,
-  FileChange,
-  FileChangeType,
-  DiffInfo,
-  FileDiff,
-  RollbackOptions,
-  RollbackResult,
-  RollbackRecord,
-  SafetyCheckResult,
-  UnrevertResult,
-} from '@ai-assistant/core';
+import type { CheckpointMetadata } from '@ai-assistant/core';
 import {
   CheckpointManager,
   getCheckpointManager,

packages/server/src/routes/commands.ts

@@ -7,11 +7,7 @@
 import { Hono } from 'hono';
 import { z } from 'zod';
 import { getConfig } from './config.js';
-import type {
-  Command,
-  CommandInput,
-  CommandExecutionResult,
-} from '@ai-assistant/core';
+// Command, CommandInput, CommandExecutionResult 类型由函数自动推断
 import {
   getCommandRegistry,
   createCommandExecutor,

packages/server/src/routes/index.ts

@@ -18,3 +18,4 @@ export { servicesRouter } from './services.js';
 export { contextRouter } from './context.js';
 export { lspRouter } from './lsp.js';
 export { systemCommandsRouter } from './system-commands.js';
+export { statsRouter } from './stats.js';

packages/server/src/routes/lsp.ts

@@ -6,10 +6,7 @@
 
 import { Hono } from 'hono';
 import { getConfig } from './config.js';
-import type {
-  FileDiagnostic,
-  ServerStatus,
-} from '@ai-assistant/core';
+import type { FileDiagnostic } from '@ai-assistant/core';
 import {
   initLSP,
   listServers,

packages/server/src/routes/mcp.ts

@@ -6,12 +6,7 @@
 
 import { Hono } from 'hono';
 import { getConfig } from './config.js';
-import type {
-  MCPConfig,
-  MCPServerConfig,
-  MCPServerStatus,
-  MCPTool,
-} from '@ai-assistant/core';
+import type { MCPConfig } from '@ai-assistant/core';
 import {
   getMCPManager,
   loadMCPConfig,

packages/server/src/routes/services.ts

@@ -5,7 +5,7 @@
  */
 
 import { Hono } from 'hono';
-import type { ServiceConfig, ServiceType } from '@ai-assistant/core';
+import type { ServiceType } from '@ai-assistant/core';
 import {
   loadProvidersConfig,
   getServiceConfig,

packages/server/src/routes/sessions.ts

@@ -11,7 +11,7 @@ import {
   type Message,
   type MessagePart,
 } from '../types.js';
-import type { MessageInfo, Part, ApiPart } from '@ai-assistant/core';
+// MessageInfo, Part, ApiPart 从 Core 导入但仅用于类型推导
 import { MessageStorage, PartStorage, partsToApiFormat } from '@ai-assistant/core';
 
 export const sessionsRouter = new Hono();

packages/server/src/routes/stats.ts

@@ -0,0 +1,216 @@
+/**
+ * Stats API Routes
+ *
+ * Token 消耗统计相关的 REST API
+ */
+
+import { Hono } from 'hono';
+import { tokenStatsManager } from '@ai-assistant/core';
+import { getSessionManager } from '../session/manager.js';
+
+export const statsRouter = new Hono();
+
+const sessionManager = getSessionManager();
+
+/**
+ * GET /stats/sessions/:id - 获取会话 Token 统计
+ */
+statsRouter.get('/sessions/:id', async (c) => {
+  const id = c.req.param('id');
+
+  if (!sessionManager.exists(id)) {
+    return c.json(
+      {
+        success: false,
+        error: 'Session not found',
+      },
+      404
+    );
+  }
+
+  try {
+    // 从 session manager 获取 projectId
+    const projectId = sessionManager.getProjectId(id);
+
+    const stats = await tokenStatsManager.getSessionStats(projectId, id);
+
+    if (!stats) {
+      // 如果没有统计，返回空数据
+      return c.json({
+        success: true,
+        data: {
+          sessionId: id,
+          self: {
+            inputTokens: 0,
+            outputTokens: 0,
+            totalTokens: 0,
+          },
+          children: {
+            inputTokens: 0,
+            outputTokens: 0,
+            totalTokens: 0,
+          },
+          total: {
+            inputTokens: 0,
+            outputTokens: 0,
+            totalTokens: 0,
+          },
+          messageCount: 0,
+        },
+      });
+    }
+
+    return c.json({
+      success: true,
+      data: stats,
+    });
+  } catch (error) {
+    console.error('[Stats] Failed to get session stats:', error);
+    return c.json(
+      {
+        success: false,
+        error: error instanceof Error ? error.message : 'Failed to get stats',
+      },
+      500
+    );
+  }
+});
+
+/**
+ * GET /stats/projects/:id - 获取项目 Token 统计
+ */
+statsRouter.get('/projects/:id', async (c) => {
+  const id = c.req.param('id');
+
+  try {
+    // forceRefresh=true 强制刷新统计
+    const refresh = c.req.query('refresh') === 'true';
+    const stats = await tokenStatsManager.getProjectStats(id, refresh);
+
+    if (!stats) {
+      return c.json({
+        success: true,
+        data: {
+          projectId: id,
+          totalInputTokens: 0,
+          totalOutputTokens: 0,
+          totalTokens: 0,
+          sessionCount: 0,
+        },
+      });
+    }
+
+    return c.json({
+      success: true,
+      data: {
+        projectId: id,
+        ...stats,
+      },
+    });
+  } catch (error) {
+    console.error('[Stats] Failed to get project stats:', error);
+    return c.json(
+      {
+        success: false,
+        error: error instanceof Error ? error.message : 'Failed to get stats',
+      },
+      500
+    );
+  }
+});
+
+/**
+ * GET /stats/summary - 获取当前会话/项目统计摘要
+ *
+ * 返回当前活动会话的统计信息（如果有）
+ */
+statsRouter.get('/summary', async (c) => {
+  try {
+    const sessions = sessionManager.list();
+    const currentSession = sessions.find((s) => s.status === 'busy') || sessions[0];
+
+    if (!currentSession) {
+      return c.json({
+        success: true,
+        data: {
+          hasActiveSession: false,
+          session: null,
+          project: null,
+        },
+      });
+    }
+
+    // 从 session manager 获取 projectId
+    const projectId = sessionManager.getProjectId(currentSession.id);
+
+    const [sessionStats, projectStats] = await Promise.all([
+      tokenStatsManager.getSessionStats(projectId, currentSession.id),
+      tokenStatsManager.getProjectStats(projectId),
+    ]);
+
+    return c.json({
+      success: true,
+      data: {
+        hasActiveSession: true,
+        sessionId: currentSession.id,
+        projectId,
+        session: sessionStats || {
+          sessionId: currentSession.id,
+          self: { inputTokens: 0, outputTokens: 0, totalTokens: 0 },
+          children: { inputTokens: 0, outputTokens: 0, totalTokens: 0 },
+          total: { inputTokens: 0, outputTokens: 0, totalTokens: 0 },
+          messageCount: 0,
+        },
+        project: projectStats
+          ? {
+              projectId,
+              ...projectStats,
+            }
+          : {
+              projectId,
+              totalInputTokens: 0,
+              totalOutputTokens: 0,
+              totalTokens: 0,
+              sessionCount: 0,
+            },
+      },
+    });
+  } catch (error) {
+    console.error('[Stats] Failed to get summary:', error);
+    return c.json(
+      {
+        success: false,
+        error: error instanceof Error ? error.message : 'Failed to get summary',
+      },
+      500
+    );
+  }
+});
+
+/**
+ * POST /stats/projects/:id/refresh - 强制刷新项目统计
+ */
+statsRouter.post('/projects/:id/refresh', async (c) => {
+  const id = c.req.param('id');
+
+  try {
+    const stats = await tokenStatsManager.updateProjectStats(id);
+
+    return c.json({
+      success: true,
+      data: {
+        projectId: id,
+        ...stats,
+      },
+    });
+  } catch (error) {
+    console.error('[Stats] Failed to refresh project stats:', error);
+    return c.json(
+      {
+        success: false,
+        error: error instanceof Error ? error.message : 'Failed to refresh stats',
+      },
+      500
+    );
+  }
+});

packages/server/src/types.ts

@@ -365,11 +365,6 @@ export interface Message {
   parts: MessagePart[];
   /** 所有文本拼接（兼容字段） */
   content?: string;
-  metadata?: {
-    model?: string;
-    stepCount?: number;
-    totalTokens?: number;
-  };
 }
 
 /** @deprecated 使用 Message 代替 */

packages/ui/src/api/client.ts

@@ -56,6 +56,10 @@ import type {
   // System Commands types
   SystemCommandListResponse,
   SystemCommandInfo,
+  // Token Stats types
+  SessionTokenStats,
+  ProjectTokenStats,
+  TokenStatsSummary,
 } from './types.js';
 
 // Re-export types
@@ -155,6 +159,11 @@ export type {
   ActiveFileInfo,
   // File diff types
   FileDiffInfo,
+  // Token Stats types
+  TokenCount,
+  SessionTokenStats,
+  ProjectTokenStats,
+  TokenStatsSummary,
 } from './types.js';
 
 // API Configuration
@@ -1156,3 +1165,112 @@ export async function getLSPDiagnostics(file?: string): Promise<{
   const params = file ? `?file=${encodeURIComponent(file)}` : '';
   return request('GET', `/lsp/diagnostics${params}`);
 }
+
+// ============ Token Stats API ============
+
+/**
+ * 获取会话 Token 统计
+ */
+export async function getSessionTokenStats(sessionId: string): Promise<{
+  success: boolean;
+  data?: SessionTokenStats;
+  error?: string;
+}> {
+  return request('GET', `/stats/sessions/${encodeURIComponent(sessionId)}`);
+}
+
+/**
+ * 获取项目 Token 统计
+ */
+export async function getProjectTokenStats(
+  projectId: string,
+  refresh?: boolean
+): Promise<{
+  success: boolean;
+  data?: ProjectTokenStats;
+  error?: string;
+}> {
+  const params = refresh ? '?refresh=true' : '';
+  return request('GET', `/stats/projects/${encodeURIComponent(projectId)}${params}`);
+}
+
+/**
+ * 获取 Token 统计摘要（当前会话和项目）
+ */
+export async function getTokenStatsSummary(): Promise<{
+  success: boolean;
+  data?: TokenStatsSummary;
+  error?: string;
+}> {
+  return request('GET', '/stats/summary');
+}
+
+/**
+ * 刷新项目 Token 统计
+ */
+export async function refreshProjectTokenStats(projectId: string): Promise<{
+  success: boolean;
+  data?: ProjectTokenStats;
+  error?: string;
+}> {
+  return request('POST', `/stats/projects/${encodeURIComponent(projectId)}/refresh`);
+}
+
+// ============ Services API ============
+
+/** 服务列表项 */
+export interface ServiceListItem {
+  id: string;
+  name: string;
+  description: string;
+  website: string;
+  enabled: boolean;
+  hasApiKey: boolean;
+}
+
+/**
+ * 获取所有服务列表
+ */
+export async function listServices(): Promise<{
+  success: boolean;
+  data: ServiceListItem[];
+  error?: string;
+}> {
+  return request('GET', '/services');
+}
+
+/**
+ * 获取单个服务详情
+ */
+export async function getService(id: string): Promise<{
+  success: boolean;
+  data?: ServiceListItem;
+  error?: string;
+}> {
+  return request('GET', `/services/${encodeURIComponent(id)}`);
+}
+
+/**
+ * 更新服务配置
+ */
+export async function updateService(
+  id: string,
+  config: { apiKey?: string; enabled?: boolean }
+): Promise<{
+  success: boolean;
+  message?: string;
+  error?: string;
+}> {
+  return request('PUT', `/services/${encodeURIComponent(id)}`, config);
+}
+
+/**
+ * 删除服务配置（移除 API Key）
+ */
+export async function deleteService(id: string): Promise<{
+  success: boolean;
+  message?: string;
+  error?: string;
+}> {
+  return request('DELETE', `/services/${encodeURIComponent(id)}`);
+}

packages/ui/src/api/types.ts

@@ -175,14 +175,13 @@ export interface Message {
   parts: MessagePart[];
   /** 所有文本拼接（兼容字段） */
   content?: string;
-  /** 是否包含推理过程 */
-  hasReasoning?: boolean;
-  /** 推理内容 */
-  reasoning?: string;
   /** 元数据 */
   metadata?: {
-    model?: string;
-    stepCount?: number;
+    /** 输入 Token 数 */
+    inputTokens?: number;
+    /** 输出 Token 数 */
+    outputTokens?: number;
+    /** 总 Token 数 */
     totalTokens?: number;
     /** 生成此消息的 Agent 名称 */
     agentName?: string;
@@ -838,8 +837,6 @@ export interface ProviderDetail {
   builtin: boolean;
   /** API 基础 URL */
   baseUrl?: string;
-  /** API Key 环境变量名 */
-  apiKeyEnvVar?: string;
   /** 可用模型列表 */
   models: ModelInfo[];
   /** 是否允许自定义模型 */
@@ -863,8 +860,6 @@ export interface CustomProviderDefinition {
   description?: string;
   /** API 基础 URL（必填） */
   baseUrl: string;
-  /** API Key 环境变量名 */
-  apiKeyEnvVar?: string;
   /** 预设模型列表 */
   models?: ModelInfo[];
   /** 是否允许自定义模型 */
@@ -877,8 +872,6 @@ export interface ProviderConfig {
   id?: string;
   /** API Key */
   apiKey?: string;
-  /** API Key 环境变量名 */
-  apiKeyEnvVar?: string;
   /** 自定义 API 基础 URL */
   baseUrl?: string;
   /** 是否启用 */
@@ -1223,3 +1216,61 @@ export interface FileDiffInfo {
   toolCallId?: string;
 }
 
+// ============ Token 统计相关 ============
+
+/** Token 统计数值 */
+export interface TokenCount {
+  inputTokens: number;
+  outputTokens: number;
+  totalTokens: number;
+}
+
+/** 会话 Token 统计 */
+export interface SessionTokenStats {
+  /** 会话 ID */
+  sessionId?: string;
+  /** 本会话自身统计 */
+  self: TokenCount & {
+    cacheReadTokens?: number;
+    cacheWriteTokens?: number;
+  };
+  /** 子会话统计汇总 */
+  children: TokenCount;
+  /** 总计（自身 + 子会话） */
+  total: TokenCount;
+  /** 消息数量 */
+  messageCount: number;
+  /** 最后更新时间 */
+  updatedAt?: number;
+}
+
+/** 项目 Token 统计 */
+export interface ProjectTokenStats {
+  /** 项目 ID */
+  projectId: string;
+  /** 总输入 Token */
+  totalInputTokens: number;
+  /** 总输出 Token */
+  totalOutputTokens: number;
+  /** 总 Token */
+  totalTokens: number;
+  /** 会话数量 */
+  sessionCount: number;
+  /** 最后更新时间 */
+  updatedAt?: number;
+}
+
+/** Token 统计摘要 */
+export interface TokenStatsSummary {
+  /** 是否有活跃会话 */
+  hasActiveSession: boolean;
+  /** 当前会话 ID */
+  sessionId?: string;
+  /** 当前项目 ID */
+  projectId?: string;
+  /** 会话统计 */
+  session: SessionTokenStats | null;
+  /** 项目统计 */
+  project: ProjectTokenStats | null;
+}
+

packages/ui/src/components/ChatMessage.tsx

@@ -15,6 +15,7 @@ import {
   CheckCircle2,
   Loader2,
   GitCompare,
+  Coins,
 } from 'lucide-react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { useState, forwardRef } from 'react';
@@ -41,11 +42,28 @@ interface ChatMessageProps {
   onDenyPermission?: (requestId: string, remember: boolean) => void;
 }
 
+// 格式化 Token 数量
+const formatTokens = (tokens: number): string => {
+  if (tokens >= 1000000) {
+    return `${(tokens / 1000000).toFixed(2)}M`;
+  }
+  if (tokens >= 1000) {
+    return `${(tokens / 1000).toFixed(1)}k`;
+  }
+  return `${tokens}`;
+};
+
 export const ChatMessage = forwardRef<HTMLDivElement, ChatMessageProps>(
   ({ message, isStreaming = false, onAnswerQuestion, onViewDiff, onAllowPermission, onDenyPermission }, ref) => {
     const isUser = message.role === 'user';
     const [copied, setCopied] = useState(false);
 
+    // Token 信息
+    const hasTokenInfo = !isUser && message.metadata?.inputTokens !== undefined;
+    const inputTokens = message.metadata?.inputTokens ?? 0;
+    const outputTokens = message.metadata?.outputTokens ?? 0;
+    const totalTokens = message.metadata?.totalTokens ?? (inputTokens + outputTokens);
+
     const handleCopy = async () => {
       await navigator.clipboard.writeText(message.content ?? '');
       setCopied(true);
@@ -184,6 +202,22 @@ export const ChatMessage = forwardRef<HTMLDivElement, ChatMessageProps>(
             </button>
           </div>
           {renderContent()}
+          {/* Token 统计显示（仅 AI 消息，非流式输出时） */}
+          {hasTokenInfo && !isStreaming && totalTokens > 0 && (
+            <div className="mt-2 pt-2 border-t border-line/50 flex items-center gap-3 text-xs text-fg-subtle">
+              <span className="flex items-center gap-1" title="Token 消耗">
+                <Coins size={12} className="text-fg-muted" />
+                <span>{formatTokens(totalTokens)}</span>
+              </span>
+              <span className="text-fg-muted/40">|</span>
+              <span title="输入 Token">
+                ↓ {formatTokens(inputTokens)}
+              </span>
+              <span title="输出 Token">
+                ↑ {formatTokens(outputTokens)}
+              </span>
+            </div>
+          )}
         </div>
       </motion.div>
     );

packages/ui/src/components/ProviderEditor.tsx

@@ -54,7 +54,6 @@ export function ProviderEditor({
 
   // Form state
   const [apiKey, setApiKey] = useState('');
-  const [apiKeyEnvVar, setApiKeyEnvVar] = useState('');
   const [baseUrl, setBaseUrl] = useState('');
   const [enabled, setEnabled] = useState(true);
 
@@ -84,7 +83,6 @@ export function ProviderEditor({
           const config = result.data.config;
           // API key is not returned for security, but we show if it's configured via hasApiKey
           setApiKey('');
-          setApiKeyEnvVar(result.data.apiKeyEnvVar || '');
           setBaseUrl(config.baseUrl || result.data.baseUrl || '');
           setEnabled(config.enabled !== false);
         } else {
@@ -114,9 +112,6 @@ export function ProviderEditor({
       if (apiKey.trim()) {
         config.apiKey = apiKey;
       }
-      if (apiKeyEnvVar.trim() && apiKeyEnvVar !== provider?.apiKeyEnvVar) {
-        config.apiKeyEnvVar = apiKeyEnvVar;
-      }
       if (baseUrl.trim() && baseUrl !== provider?.baseUrl) {
         config.baseUrl = baseUrl;
       }
@@ -336,20 +331,6 @@ export function ProviderEditor({
                     )}
                   </div>
 
-                  {/* API Key Env Var */}
-                  <div>
-                    <label className="block text-xs text-fg-muted mb-1">
-                      Environment Variable (alternative)
-                    </label>
-                    <Input
-                      value={apiKeyEnvVar}
-                      onChange={(e) => setApiKeyEnvVar(e.target.value)}
-                      placeholder={provider?.apiKeyEnvVar || 'PROVIDER_API_KEY'}
-                    />
-                    <p className="text-xs text-fg-subtle mt-1">
-                      If no API key is set, this env var will be used
-                    </p>
-                  </div>
                 </div>
 
                 {/* Base URL Section */}

packages/ui/src/components/ProvidersPanel.tsx

@@ -406,14 +406,6 @@ export function ProvidersPanel({ onClose, responsive = false }: ProvidersPanelPr
                       </div>
                     )}
 
-                    {/* API Key Env Var */}
-                    {detail.apiKeyEnvVar && (
-                      <div className="text-xs">
-                        <span className="text-fg-muted">API Key Env:</span>{' '}
-                        <code className="text-fg-secondary bg-surface-subtle px-1 rounded">{detail.apiKeyEnvVar}</code>
-                      </div>
-                    )}
-
                     {/* Models */}
                     <div className="space-y-2">
                       <div className="flex items-center justify-between">
@@ -688,14 +680,6 @@ export function ProvidersPanel({ onClose, responsive = false }: ProvidersPanelPr
                       placeholder="http://localhost:11434/v1"
                     />
                   </div>
-                  <div>
-                    <label className="text-xs text-fg-muted">API Key Env Var (optional)</label>
-                    <Input
-                      value={newProvider.apiKeyEnvVar || ''}
-                      onChange={(e) => setNewProvider((p) => ({ ...p, apiKeyEnvVar: e.target.value }))}
-                      placeholder="OLLAMA_API_KEY"
-                    />
-                  </div>
                 </div>
                 <div className="flex justify-end gap-2 pt-2">
                   <Button variant="ghost" onClick={() => setShowAddProvider(false)}>

packages/ui/src/components/ServicesPanel.tsx

@@ -0,0 +1,452 @@
+/**
+ * ServicesPanel Component
+ *
+ * Third-party services configuration panel (e.g., Tavily for web search)
+ */
+
+import { useState, useEffect, useCallback } from 'react';
+import {
+  X,
+  RefreshCw,
+  Globe,
+  Key,
+  Check,
+  Loader2,
+  Eye,
+  EyeOff,
+  ExternalLink,
+} from 'lucide-react';
+import { motion, AnimatePresence } from 'framer-motion';
+import { toast } from 'sonner';
+import { cn } from '../utils/cn';
+import { modalOverlay, modalContent, smoothTransition } from '../utils/animations';
+import { Button } from '../primitives/Button';
+import { Input } from '../primitives/Input';
+import { Switch } from '../primitives/Switch';
+import { Skeleton } from './Skeleton';
+import {
+  listServices,
+  updateService,
+  deleteService,
+  type ServiceListItem,
+} from '../api/client.js';
+
+interface ServicesPanelProps {
+  onClose: () => void;
+  /** Enable responsive layout */
+  responsive?: boolean;
+}
+
+export function ServicesPanel({ onClose, responsive = false }: ServicesPanelProps) {
+  // Data state
+  const [services, setServices] = useState<ServiceListItem[]>([]);
+
+  // UI state
+  const [loading, setLoading] = useState(true);
+  const [refreshing, setRefreshing] = useState(false);
+  const [savingService, setSavingService] = useState<string | null>(null);
+
+  // Edit state
+  const [editingService, setEditingService] = useState<string | null>(null);
+  const [apiKeyInput, setApiKeyInput] = useState('');
+  const [showApiKey, setShowApiKey] = useState(false);
+
+  // Load services list
+  const loadServices = useCallback(async (showToast = false) => {
+    try {
+      const result = await listServices();
+      if (result.success) {
+        setServices(result.data);
+        if (showToast) {
+          toast.success('Services refreshed');
+        }
+      } else {
+        toast.error(result.error || 'Failed to load services');
+      }
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : 'Failed to load services');
+    }
+  }, []);
+
+  // Initial load
+  useEffect(() => {
+    setLoading(true);
+    loadServices().finally(() => setLoading(false));
+  }, [loadServices]);
+
+  // Refresh
+  const handleRefresh = async () => {
+    setRefreshing(true);
+    await loadServices(true);
+    setRefreshing(false);
+  };
+
+  // Start editing a service
+  const handleStartEdit = async (serviceId: string) => {
+    setEditingService(serviceId);
+    setApiKeyInput('');
+    setShowApiKey(false);
+  };
+
+  // Save service config
+  const handleSaveService = async (serviceId: string, enabled: boolean) => {
+    setSavingService(serviceId);
+    try {
+      const payload: { apiKey?: string; enabled?: boolean } = { enabled };
+      if (apiKeyInput) {
+        payload.apiKey = apiKeyInput;
+      }
+
+      const result = await updateService(serviceId, payload);
+      if (result.success) {
+        toast.success(`${serviceId} configuration saved`);
+        setEditingService(null);
+        setApiKeyInput('');
+        loadServices();
+      } else {
+        toast.error(result.error || 'Failed to save configuration');
+      }
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : 'Failed to save configuration');
+    } finally {
+      setSavingService(null);
+    }
+  };
+
+  // Toggle service enabled status
+  const handleToggleEnabled = async (service: ServiceListItem) => {
+    setSavingService(service.id);
+    try {
+      const result = await updateService(service.id, { enabled: !service.enabled });
+      if (result.success) {
+        toast.success(`${service.name} ${!service.enabled ? 'enabled' : 'disabled'}`);
+        loadServices();
+      } else {
+        toast.error(result.error || 'Failed to update service');
+      }
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : 'Failed to update service');
+    } finally {
+      setSavingService(null);
+    }
+  };
+
+  // Delete service config (remove API key)
+  const handleDeleteConfig = async (serviceId: string) => {
+    if (!confirm(`Are you sure you want to remove the API key for "${serviceId}"?`)) return;
+
+    setSavingService(serviceId);
+    try {
+      const result = await deleteService(serviceId);
+      if (result.success) {
+        toast.success(`${serviceId} configuration removed`);
+        loadServices();
+      } else {
+        toast.error(result.error || 'Failed to remove configuration');
+      }
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : 'Failed to remove configuration');
+    } finally {
+      setSavingService(null);
+    }
+  };
+
+  // Loading skeleton
+  const LoadingSkeleton = () => (
+    <div className="space-y-3 p-4">
+      {[1, 2].map((i) => (
+        <div key={i} className="flex items-center gap-3 p-4 bg-surface-base/50 rounded-lg">
+          <Skeleton className="h-10 w-10 rounded-lg" />
+          <div className="flex-1 space-y-2">
+            <Skeleton className="h-4 w-32" />
+            <Skeleton className="h-3 w-48" />
+          </div>
+          <Skeleton className="h-6 w-12 rounded-full" />
+        </div>
+      ))}
+    </div>
+  );
+
+  // Service item component
+  const ServiceItem = ({ service }: { service: ServiceListItem }) => {
+    const isEditing = editingService === service.id;
+    const isSaving = savingService === service.id;
+
+    return (
+      <motion.div
+        layout
+        initial={{ opacity: 0, y: 10 }}
+        animate={{ opacity: 1, y: 0 }}
+        className="bg-surface-base/50 rounded-lg overflow-hidden"
+      >
+        {/* Service Header */}
+        <div className="flex items-center gap-4 p-4">
+          {/* Icon */}
+          <div className="w-10 h-10 rounded-lg bg-primary-500/10 flex items-center justify-center">
+            <Globe size={20} className="text-primary-400" />
+          </div>
+
+          {/* Info */}
+          <div className="flex-1 min-w-0">
+            <div className="flex items-center gap-2">
+              <span className="font-medium text-fg-secondary">{service.name}</span>
+              <a
+                href={service.website}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="text-fg-subtle hover:text-primary-400 transition-colors"
+                title="Visit website"
+              >
+                <ExternalLink size={12} />
+              </a>
+            </div>
+            <p className="text-xs text-fg-subtle truncate">{service.description}</p>
+            <div className="text-xs text-fg-subtle flex items-center gap-2 mt-1">
+              {service.hasApiKey ? (
+                <span className="text-green-400 flex items-center gap-1">
+                  <Key size={10} />
+                  API Key configured
+                </span>
+              ) : (
+                <span className="text-yellow-400 flex items-center gap-1">
+                  <Key size={10} />
+                  No API Key
+                </span>
+              )}
+            </div>
+          </div>
+
+          {/* Actions */}
+          <div className="flex items-center gap-3">
+            {/* Enable Toggle */}
+            <div className="flex items-center gap-2">
+              <span className="text-xs text-fg-muted">
+                {service.enabled ? 'Enabled' : 'Disabled'}
+              </span>
+              <Switch
+                checked={service.enabled}
+                onCheckedChange={() => handleToggleEnabled(service)}
+                disabled={isSaving || !service.hasApiKey}
+              />
+            </div>
+
+            {/* Configure Button */}
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() => handleStartEdit(service.id)}
+              disabled={isSaving}
+            >
+              {isSaving ? (
+                <Loader2 size={14} className="animate-spin" />
+              ) : (
+                <Key size={14} className="mr-1" />
+              )}
+              Configure
+            </Button>
+          </div>
+        </div>
+
+        {/* Edit Panel */}
+        <AnimatePresence>
+          {isEditing && (
+            <motion.div
+              initial={{ height: 0, opacity: 0 }}
+              animate={{ height: 'auto', opacity: 1 }}
+              exit={{ height: 0, opacity: 0 }}
+              transition={{ duration: 0.2 }}
+              className="overflow-hidden"
+            >
+              <div className="px-4 pb-4 pt-2 border-t border-line/50 space-y-4">
+                {/* API Key Input */}
+                <div className="space-y-2">
+                  <label className="text-sm text-fg-muted flex items-center gap-2">
+                    <Key size={14} />
+                    API Key
+                  </label>
+                  <div className="flex gap-2">
+                    <div className="relative flex-1">
+                      <Input
+                        type={showApiKey ? 'text' : 'password'}
+                        value={apiKeyInput}
+                        onChange={(e) => setApiKeyInput(e.target.value)}
+                        placeholder={service.hasApiKey ? '••••••••••••••••' : 'Enter API key'}
+                        className="pr-10"
+                      />
+                      <button
+                        type="button"
+                        onClick={() => setShowApiKey(!showApiKey)}
+                        className="absolute right-3 top-1/2 -translate-y-1/2 text-fg-subtle hover:text-fg-secondary"
+                      >
+                        {showApiKey ? <EyeOff size={16} /> : <Eye size={16} />}
+                      </button>
+                    </div>
+                  </div>
+                  <p className="text-xs text-fg-subtle">
+                    Get your API key from{' '}
+                    <a
+                      href={service.website}
+                      target="_blank"
+                      rel="noopener noreferrer"
+                      className="text-primary-400 hover:underline"
+                    >
+                      {service.website}
+                    </a>
+                  </p>
+                </div>
+
+                {/* Actions */}
+                <div className="flex items-center justify-between">
+                  <div>
+                    {service.hasApiKey && (
+                      <Button
+                        variant="ghost"
+                        size="sm"
+                        onClick={() => handleDeleteConfig(service.id)}
+                        className="text-red-400 hover:text-red-300"
+                        disabled={isSaving}
+                      >
+                        Remove API Key
+                      </Button>
+                    )}
+                  </div>
+                  <div className="flex gap-2">
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      onClick={() => {
+                        setEditingService(null);
+                        setApiKeyInput('');
+                      }}
+                      disabled={isSaving}
+                    >
+                      Cancel
+                    </Button>
+                    <Button
+                      size="sm"
+                      onClick={() => handleSaveService(service.id, service.enabled)}
+                      disabled={isSaving || (!apiKeyInput && !service.hasApiKey)}
+                    >
+                      {isSaving ? (
+                        <Loader2 size={14} className="animate-spin mr-1" />
+                      ) : (
+                        <Check size={14} className="mr-1" />
+                      )}
+                      Save
+                    </Button>
+                  </div>
+                </div>
+              </div>
+            </motion.div>
+          )}
+        </AnimatePresence>
+      </motion.div>
+    );
+  };
+
+  return (
+    <AnimatePresence>
+      <motion.div
+        variants={modalOverlay}
+        initial="initial"
+        animate="animate"
+        exit="exit"
+        transition={{ duration: 0.2 }}
+        className={cn(
+          'fixed inset-0 bg-black/50 flex z-50',
+          responsive ? 'items-end md:items-center justify-center' : 'items-center justify-center'
+        )}
+        onClick={onClose}
+      >
+        <motion.div
+          variants={modalContent}
+          initial="initial"
+          animate="animate"
+          exit="exit"
+          transition={smoothTransition}
+          onClick={(e) => e.stopPropagation()}
+          className={cn(
+            'bg-surface-subtle max-h-[90vh] overflow-hidden flex flex-col',
+            responsive
+              ? 'w-full md:w-full md:max-w-lg md:mx-4 rounded-t-2xl md:rounded-lg'
+              : 'rounded-lg w-full max-w-lg mx-4'
+          )}
+        >
+          {/* Header */}
+          <div
+            className={cn(
+              'flex items-center justify-between border-b border-line',
+              responsive ? 'px-4 md:px-6 py-4' : 'px-6 py-4'
+            )}
+          >
+            {responsive && (
+              <div className="absolute top-2 left-1/2 -translate-x-1/2 w-10 h-1 bg-surface-emphasis rounded-full md:hidden" />
+            )}
+            <div className={cn(responsive && 'mt-2 md:mt-0')}>
+              <h2 className="text-lg font-semibold flex items-center gap-2">
+                <Globe size={20} className="text-primary-400" />
+                External Services
+              </h2>
+              <p className="text-xs text-fg-subtle">
+                Configure API keys for third-party services
+              </p>
+            </div>
+            <div className="flex items-center gap-2">
+              <Button
+                variant="ghost"
+                size="icon"
+                onClick={handleRefresh}
+                disabled={refreshing}
+                title="Refresh"
+                className={cn(responsive && 'min-w-[44px] min-h-[44px]')}
+              >
+                <RefreshCw size={18} className={cn(refreshing && 'animate-spin')} />
+              </Button>
+              <Button
+                variant="ghost"
+                size="icon"
+                onClick={onClose}
+                className={cn(responsive && 'min-w-[44px] min-h-[44px]')}
+              >
+                <X size={20} />
+              </Button>
+            </div>
+          </div>
+
+          {/* Services List */}
+          <div className="flex-1 overflow-y-auto">
+            {loading ? (
+              <LoadingSkeleton />
+            ) : services.length === 0 ? (
+              <div className="flex flex-col items-center justify-center py-12 text-fg-subtle">
+                <Globe size={48} className="mb-4 opacity-50" />
+                <p className="text-center">No services available</p>
+              </div>
+            ) : (
+              <motion.div
+                initial={{ opacity: 0 }}
+                animate={{ opacity: 1 }}
+                className={cn('space-y-3', responsive ? 'p-4' : 'p-4')}
+              >
+                {services.map((service) => (
+                  <ServiceItem key={service.id} service={service} />
+                ))}
+              </motion.div>
+            )}
+          </div>
+
+          {/* Footer */}
+          <div
+            className={cn(
+              'border-t border-line text-xs text-fg-subtle text-center',
+              responsive ? 'px-4 py-3 safe-area-pb' : 'px-6 py-3'
+            )}
+          >
+            Config stored in{' '}
+            <code className="font-mono bg-surface-base px-1 rounded">~/.ai-assistant/providers.json</code>
+          </div>
+        </motion.div>
+      </motion.div>
+    </AnimatePresence>
+  );
+}

packages/ui/src/components/SessionPanel.tsx

@@ -5,14 +5,23 @@
  */
 
 import { useState, useEffect, useCallback, forwardRef } from 'react';
-import { X, Plus, MessageSquare, Trash2, MessageCircle } from 'lucide-react';
+import { X, Plus, MessageSquare, Trash2, MessageCircle, Coins } from 'lucide-react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { toast } from 'sonner';
 import { cn } from '../utils/cn';
 import { modalOverlay, modalContent, smoothTransition, fadeInUp } from '../utils/animations';
 import { Button } from '../primitives/Button';
 import { SessionSkeleton } from './Skeleton';
-import { listSessions, createSession, deleteSession, type Session } from '../api/client.js';
+import {
+  listSessions,
+  createSession,
+  deleteSession,
+  getTokenStatsSummary,
+  getSessionTokenStats,
+  type Session,
+  type ProjectTokenStats,
+  type SessionTokenStats,
+} from '../api/client.js';
 
 interface SessionPanelProps {
   onClose: () => void;
@@ -28,6 +37,17 @@ interface SessionPanelProps {
   responsive?: boolean;
 }
 
+// 格式化 Token 数量
+const formatTokens = (tokens: number): string => {
+  if (tokens >= 1000000) {
+    return `${(tokens / 1000000).toFixed(2)}M`;
+  }
+  if (tokens >= 1000) {
+    return `${(tokens / 1000).toFixed(1)}k`;
+  }
+  return `${tokens}`;
+};
+
 export function SessionPanel({
   onClose,
   currentSessionId,
@@ -38,13 +58,45 @@ export function SessionPanel({
 }: SessionPanelProps) {
   const [sessions, setSessions] = useState<Session[]>([]);
   const [isLoading, setIsLoading] = useState(true);
+  const [projectStats, setProjectStats] = useState<ProjectTokenStats | null>(null);
+  const [sessionStats, setSessionStats] = useState<Record<string, SessionTokenStats>>({});
 
-  // 加载会话列表
+  // 加载会话列表和 Token 统计
   const loadSessions = useCallback(async () => {
     setIsLoading(true);
     try {
-      const { data } = await listSessions();
-      setSessions(data);
+      const [sessionsResult, summaryResult] = await Promise.all([
+        listSessions(),
+        getTokenStatsSummary(),
+      ]);
+      setSessions(sessionsResult.data);
+
+      // 设置项目统计
+      if (summaryResult.success && summaryResult.data?.project) {
+        setProjectStats(summaryResult.data.project);
+      }
+
+      // 加载每个会话的 Token 统计
+      const statsPromises = sessionsResult.data.map(async (session) => {
+        try {
+          const result = await getSessionTokenStats(session.id);
+          if (result.success && result.data) {
+            return { id: session.id, stats: result.data };
+          }
+        } catch {
+          // 忽略单个会话统计加载失败
+        }
+        return null;
+      });
+
+      const statsResults = await Promise.all(statsPromises);
+      const newStats: Record<string, SessionTokenStats> = {};
+      for (const result of statsResults) {
+        if (result) {
+          newStats[result.id] = result.stats;
+        }
+      }
+      setSessionStats(newStats);
     } catch (error) {
       console.error('Failed to load sessions:', error);
       toast.error('Failed to load sessions');
@@ -109,41 +161,60 @@ export function SessionPanel({
   }, [sessionTitleUpdate]);
 
   // 会话列表项
-  const SessionItem = forwardRef<HTMLDivElement, { session: Session }>(({ session }, ref) => (
-    <motion.div
-      ref={ref}
-      layout
-      variants={fadeInUp}
-      initial="initial"
-      animate="animate"
-      exit="exit"
-      transition={smoothTransition}
-      onClick={() => handleSelectSession(session.id)}
-      className={cn(
-        'flex items-center gap-3 p-3 rounded-lg cursor-pointer group',
-        'hover:bg-surface-muted transition-colors',
-        'active:bg-surface-emphasis',
-        currentSessionId === session.id && 'bg-primary-500/20 border border-primary-500/30'
-      )}
-    >
-      <MessageSquare size={18} className="text-fg-muted flex-shrink-0" />
-      <div className="flex-1 min-w-0">
-        <div className="text-sm truncate text-fg">
-          {session.name || `Chat ${session.id.slice(0, 8)}`}
-        </div>
-        <div className="text-xs text-fg-subtle">{session.messageCount} messages</div>
-      </div>
-      <motion.button
-        whileHover={{ scale: 1.1 }}
-        whileTap={{ scale: 0.9 }}
-        onClick={(e) => handleDelete(session.id, e)}
-        className="opacity-0 group-hover:opacity-100 p-1.5 hover:bg-red-500/20 rounded transition-all"
-        aria-label="Delete session"
+  const SessionItem = forwardRef<HTMLDivElement, { session: Session }>(({ session }, ref) => {
+    const stats = sessionStats[session.id];
+    const totalTokens = stats?.total.totalTokens ?? 0;
+
+    return (
+      <motion.div
+        ref={ref}
+        layout
+        variants={fadeInUp}
+        initial="initial"
+        animate="animate"
+        exit="exit"
+        transition={smoothTransition}
+        onClick={() => handleSelectSession(session.id)}
+        className={cn(
+          'flex items-center gap-3 p-3 rounded-lg cursor-pointer group',
+          'hover:bg-surface-muted transition-colors',
+          'active:bg-surface-emphasis',
+          currentSessionId === session.id && 'bg-primary-500/20 border border-primary-500/30'
+        )}
       >
-        <Trash2 size={14} className="text-red-400" />
-      </motion.button>
-    </motion.div>
-  ));
+        <MessageSquare size={18} className="text-fg-muted flex-shrink-0" />
+        <div className="flex-1 min-w-0">
+          <div className="text-sm truncate text-fg">
+            {session.name || `Chat ${session.id.slice(0, 8)}`}
+          </div>
+          <div className="flex items-center gap-2 text-xs text-fg-subtle">
+            <span>{session.messageCount} messages</span>
+            {totalTokens > 0 && (
+              <>
+                <span className="text-fg-muted/40">•</span>
+                <span
+                  className="flex items-center gap-0.5"
+                  title={`输入: ${formatTokens(stats.total.inputTokens)} | 输出: ${formatTokens(stats.total.outputTokens)}`}
+                >
+                  <Coins size={10} />
+                  {formatTokens(totalTokens)}
+                </span>
+              </>
+            )}
+          </div>
+        </div>
+        <motion.button
+          whileHover={{ scale: 1.1 }}
+          whileTap={{ scale: 0.9 }}
+          onClick={(e) => handleDelete(session.id, e)}
+          className="opacity-0 group-hover:opacity-100 p-1.5 hover:bg-red-500/20 rounded transition-all"
+          aria-label="Delete session"
+        >
+          <Trash2 size={14} className="text-red-400" />
+        </motion.button>
+      </motion.div>
+    );
+  });
 
   // 空状态
   const EmptyState = () => (
@@ -189,30 +260,48 @@ export function SessionPanel({
       onClick={(e) => e.stopPropagation()}
     >
       {/* Header */}
-      <div className="flex items-center justify-between p-4 border-b border-line">
-        <div className="flex items-center gap-2">
-          <MessageSquare size={20} className="text-primary-400" />
-          <h2 className="text-lg font-semibold text-fg">Sessions</h2>
-          {!isLoading && (
-            <span className="text-xs text-fg-muted bg-surface-muted px-2 py-0.5 rounded-full">
-              {sessions.length}
-            </span>
-          )}
-        </div>
-        <div className="flex items-center gap-2">
-          <Button onClick={handleCreate} variant="default" size="sm">
-            <Plus size={16} />
-            New
-          </Button>
-          <motion.button
-            whileHover={{ scale: 1.1 }}
-            whileTap={{ scale: 0.9 }}
-            onClick={onClose}
-            className="p-1.5 hover:bg-surface-muted rounded-lg transition-colors"
-          >
-            <X size={20} className="text-fg-muted" />
-          </motion.button>
+      <div className="border-b border-line">
+        <div className="flex items-center justify-between p-4">
+          <div className="flex items-center gap-2">
+            <MessageSquare size={20} className="text-primary-400" />
+            <h2 className="text-lg font-semibold text-fg">Sessions</h2>
+            {!isLoading && (
+              <span className="text-xs text-fg-muted bg-surface-muted px-2 py-0.5 rounded-full">
+                {sessions.length}
+              </span>
+            )}
+          </div>
+          <div className="flex items-center gap-2">
+            <Button onClick={handleCreate} variant="default" size="sm">
+              <Plus size={16} />
+              New
+            </Button>
+            <motion.button
+              whileHover={{ scale: 1.1 }}
+              whileTap={{ scale: 0.9 }}
+              onClick={onClose}
+              className="p-1.5 hover:bg-surface-muted rounded-lg transition-colors"
+            >
+              <X size={20} className="text-fg-muted" />
+            </motion.button>
+          </div>
         </div>
+        {/* 项目 Token 统计 */}
+        {projectStats && projectStats.totalTokens > 0 && (
+          <div className="px-4 pb-3 flex items-center gap-4 text-xs text-fg-muted">
+            <div
+              className="flex items-center gap-1"
+              title={`总输入: ${formatTokens(projectStats.totalInputTokens)} | 总输出: ${formatTokens(projectStats.totalOutputTokens)}`}
+            >
+              <Coins size={12} className="text-primary-400" />
+              <span>项目总计:</span>
+              <span className="text-fg-secondary font-medium">{formatTokens(projectStats.totalTokens)}</span>
+            </div>
+            <div className="text-fg-subtle">
+              {projectStats.sessionCount} 个会话
+            </div>
+          </div>
+        )}
       </div>
 
       {/* Session List */}

packages/ui/src/components/StatusBar.tsx

@@ -1,18 +1,28 @@
 /**
  * StatusBar Component
  *
- * 底部状态栏，显示 Git 分支、诊断信息、连接状态等
+ * 底部状态栏，显示 Git 分支、诊断信息、连接状态、Token 统计等
  */
 
 import { useState, useEffect, useCallback } from 'react';
-import { GitBranch, AlertTriangle, AlertCircle, WifiOff, RefreshCw, CheckCircle } from 'lucide-react';
+import { GitBranch, AlertTriangle, AlertCircle, WifiOff, RefreshCw, CheckCircle, Coins } from 'lucide-react';
 import { cn } from '../utils/cn.js';
-import { getLSPDiagnostics, getGitInfo, getHealth, type DiagnosticsSummary, type GitInfo } from '../api/client.js';
+import {
+  getLSPDiagnostics,
+  getGitInfo,
+  getHealth,
+  getSessionTokenStats,
+  type DiagnosticsSummary,
+  type GitInfo,
+  type SessionTokenStats,
+} from '../api/client.js';
 
 interface StatusBarProps {
   className?: string;
   /** 是否连接到服务器 */
   isConnected?: boolean;
+  /** 当前会话 ID */
+  sessionId?: string | null;
   /** 点击诊断信息回调 */
   onDiagnosticsClick?: () => void;
   /** 刷新间隔 (ms) */
@@ -22,25 +32,39 @@ interface StatusBarProps {
 export function StatusBar({
   className,
   isConnected: isConnectedProp,
+  sessionId,
   onDiagnosticsClick,
   refreshInterval = 30000,
 }: StatusBarProps) {
   const [diagnostics, setDiagnostics] = useState<DiagnosticsSummary | null>(null);
   const [gitInfo, setGitInfo] = useState<GitInfo | null>(null);
+  const [tokenStats, setTokenStats] = useState<SessionTokenStats | null>(null);
   const [loading, setLoading] = useState(false);
   const [connectionStatus, setConnectionStatus] = useState(true);
 
   // 如果外部传入了 isConnected，使用外部值；否则使用内部检测
   const isConnected = isConnectedProp ?? connectionStatus;
 
-  // 加载诊断信息和 Git 信息
+  // 加载诊断信息、Git 信息和 Token 统计
   const loadData = useCallback(async () => {
     setLoading(true);
     try {
-      const [diagResult, gitResult] = await Promise.all([
+      const promises: Promise<unknown>[] = [
         getLSPDiagnostics(),
         getGitInfo(),
-      ]);
+      ];
+
+      // 如果有 sessionId，加载 Token 统计
+      if (sessionId) {
+        promises.push(getSessionTokenStats(sessionId));
+      }
+
+      const results = await Promise.all(promises);
+      const [diagResult, gitResult, tokenResult] = results as [
+        Awaited<ReturnType<typeof getLSPDiagnostics>>,
+        Awaited<ReturnType<typeof getGitInfo>>,
+        Awaited<ReturnType<typeof getSessionTokenStats>> | undefined,
+      ];
 
       if (diagResult.success && diagResult.data.summary) {
         setDiagnostics(diagResult.data.summary);
@@ -50,6 +74,10 @@ export function StatusBar({
         setGitInfo(gitResult.data);
       }
 
+      if (tokenResult?.success && tokenResult.data) {
+        setTokenStats(tokenResult.data);
+      }
+
       // 如果没有外部传入连接状态，内部检测
       if (isConnectedProp === undefined) {
         setConnectionStatus(true);
@@ -62,7 +90,7 @@ export function StatusBar({
     } finally {
       setLoading(false);
     }
-  }, [isConnectedProp]);
+  }, [isConnectedProp, sessionId]);
 
   // 检测连接状态（如果没有外部传入）
   const checkConnection = useCallback(async () => {
@@ -92,6 +120,17 @@ export function StatusBar({
   const warningCount = diagnostics?.totalWarnings ?? 0;
   const hasIssues = errorCount > 0 || warningCount > 0;
 
+  // 格式化 Token 数量
+  const formatTokens = (tokens: number): string => {
+    if (tokens >= 1000000) {
+      return `${(tokens / 1000000).toFixed(2)}M`;
+    }
+    if (tokens >= 1000) {
+      return `${(tokens / 1000).toFixed(1)}k`;
+    }
+    return `${tokens}`;
+  };
+
   return (
     <div
       className={cn(
@@ -149,6 +188,17 @@ export function StatusBar({
 
       {/* 右侧 */}
       <div className="flex items-center gap-3">
+        {/* Token 统计 */}
+        {tokenStats && tokenStats.total.totalTokens > 0 && (
+          <div
+            className="flex items-center gap-1 text-fg-muted hover:text-fg-secondary cursor-default"
+            title={`输入: ${formatTokens(tokenStats.total.inputTokens)} | 输出: ${formatTokens(tokenStats.total.outputTokens)} | 消息: ${tokenStats.messageCount}${tokenStats.children.totalTokens > 0 ? ` | 子任务: ${formatTokens(tokenStats.children.totalTokens)}` : ''}`}
+          >
+            <Coins size={12} />
+            <span>{formatTokens(tokenStats.total.totalTokens)}</span>
+          </div>
+        )}
+
         {/* 诊断信息 */}
         <button
           onClick={onDiagnosticsClick}

packages/ui/src/hooks/useChat.ts

@@ -415,6 +415,12 @@ export function useChat({ sessionId, onError, onSessionNotFound, onSessionUpdate
               const content = message.payload?.content || streaming?.content || '';
               // 从服务器 payload 获取 agentName，或使用当前 agentMode
               const agentName = message.payload?.agentName || prev.agentMode;
+              // 获取 token usage 信息
+              const usage = message.payload?.usage as {
+                inputTokens?: number;
+                outputTokens?: number;
+                totalTokens?: number;
+              } | undefined;
 
               const newMessage: Message = streaming
                 ? {
@@ -422,7 +428,13 @@ export function useChat({ sessionId, onError, onSessionNotFound, onSessionUpdate
                     id: message.payload?.id || streaming.id,
                     timestamp: message.payload?.timestamp || streaming.timestamp,
                     content,
-                    metadata: { ...streaming.metadata, agentName },
+                    metadata: {
+                      ...streaming.metadata,
+                      agentName,
+                      inputTokens: usage?.inputTokens,
+                      outputTokens: usage?.outputTokens,
+                      totalTokens: usage?.totalTokens,
+                    },
                   }
                 : {
                     id: message.payload?.id || `assistant-${Date.now()}-${Math.random().toString(36).slice(2, 9)}`,
@@ -430,7 +442,12 @@ export function useChat({ sessionId, onError, onSessionNotFound, onSessionUpdate
                     timestamp: message.payload?.timestamp || new Date().toISOString(),
                     parts: [{ type: 'text', id: `text-${Date.now()}`, text: content }],
                     content,
-                    metadata: { agentName },
+                    metadata: {
+                      agentName,
+                      inputTokens: usage?.inputTokens,
+                      outputTokens: usage?.outputTokens,
+                      totalTokens: usage?.totalTokens,
+                    },
                   };
 
               return {

packages/ui/src/index.ts

@@ -105,6 +105,12 @@ export {
   stopLSPServer,
   getRunningLSPServers,
   getLSPDiagnostics,
+  // Services API
+  listServices,
+  getService,
+  updateService,
+  deleteService,
+  type ServiceListItem,
 } from './api/client.js';
 
 // Types
@@ -235,6 +241,7 @@ export { AgentEditor } from './components/AgentEditor.js';
 export { AgentDefaultsEditor } from './components/AgentDefaultsEditor.js';
 export { ProvidersPanel } from './components/ProvidersPanel.js';
 export { ProviderEditor } from './components/ProviderEditor.js';
+export { ServicesPanel } from './components/ServicesPanel.js';
 export { CheckpointPanel } from './components/CheckpointPanel.js';
 export { CheckpointDiffViewer } from './components/CheckpointDiffViewer.js';
 export { RestoreDialog } from './components/RestoreDialog.js';

packages/web/src/App.tsx

@@ -13,6 +13,7 @@ import {
   AgentsPanel,
   CheckpointPanel,
   ProvidersPanel,
+  ServicesPanel,
   LSPPanel,
   DiagnosticsPanel,
   SessionPanel,
@@ -37,6 +38,7 @@ export function App() {
   const [showAgents, setShowAgents] = useState(false);
   const [showCheckpoints, setShowCheckpoints] = useState(false);
   const [showProviders, setShowProviders] = useState(false);
+  const [showServices, setShowServices] = useState(false);
   const [showLSP, setShowLSP] = useState(false);
   const [showDiagnostics, setShowDiagnostics] = useState(false);
   const [showSessions, setShowSessions] = useState(false);
@@ -64,8 +66,6 @@ export function App() {
 
   // 初始化：加载会话
   useEffect(() => {
-    const HAS_SESSIONS_KEY = 'ai-assistant-has-sessions';
-
     async function init() {
       try {
         const sessionsResult = await listSessions();
@@ -74,18 +74,11 @@ export function App() {
         if (sessions.length > 0) {
           // 有会话，选择最近的
           setCurrentSessionId(sessions[0].id);
-          localStorage.setItem(HAS_SESSIONS_KEY, 'true');
         } else {
-          // 无会话：检查是否是首次启动
-          const hasHadSessions = localStorage.getItem(HAS_SESSIONS_KEY);
-
-          if (!hasHadSessions) {
-            // 首次启动，自动创建会话
-            const { data: newSession } = await createSession();
-            setCurrentSessionId(newSession.id);
-            localStorage.setItem(HAS_SESSIONS_KEY, 'true');
-          }
-          // 用户删除了所有会话：不自动创建，显示空状态
+          // 无会话，自动创建一个新会话
+          // 这处理了新 project 目录的情况
+          const { data: newSession } = await createSession();
+          setCurrentSessionId(newSession.id);
         }
       } catch (error) {
         console.error('Failed to initialize:', error);
@@ -203,6 +196,7 @@ export function App() {
                 onOpenAgents={() => setShowAgents(true)}
                 onOpenCheckpoints={() => setShowCheckpoints(true)}
                 onOpenProviders={() => setShowProviders(true)}
+                onOpenServices={() => setShowServices(true)}
                 onOpenLSP={() => setShowLSP(true)}
                 onOpenDiagnostics={() => setShowDiagnostics(true)}
                 onOpenSessions={() => setShowSessions(true)}
@@ -222,7 +216,10 @@ export function App() {
         </div>
 
         {/* 底部状态栏 */}
-        <StatusBar onDiagnosticsClick={() => setShowDiagnostics(true)} />
+        <StatusBar
+          sessionId={currentSessionId}
+          onDiagnosticsClick={() => setShowDiagnostics(true)}
+        />
 
         {/* 命令面板 */}
         {showCommands && <CommandPanel onClose={() => setShowCommands(false)} responsive />}
@@ -242,6 +239,9 @@ export function App() {
         {/* Providers 面板 */}
         {showProviders && <ProvidersPanel onClose={() => setShowProviders(false)} responsive />}
 
+        {/* Services 面板 */}
+        {showServices && <ServicesPanel onClose={() => setShowServices(false)} responsive />}
+
         {/* LSP 面板 */}
         {showLSP && (
           <LSPPanel

packages/web/src/pages/Chat.tsx

@@ -3,7 +3,7 @@
  */
 
 import { useEffect, useRef } from 'react';
-import { MessageSquare, Terminal, Plug, Zap, Bot, History, Server, MessagesSquare } from 'lucide-react';
+import { MessageSquare, Terminal, Plug, Zap, Bot, History, Server, MessagesSquare, Globe } from 'lucide-react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { toast } from 'sonner';
 import {
@@ -33,6 +33,7 @@ interface ChatPageProps {
   onOpenAgents?: () => void;
   onOpenCheckpoints?: () => void;
   onOpenProviders?: () => void;
+  onOpenServices?: () => void;
   onOpenLSP?: () => void;
   onOpenDiagnostics?: () => void;
   onOpenSessions?: () => void;
@@ -61,6 +62,7 @@ export function ChatPage({
   onOpenAgents,
   onOpenCheckpoints,
   onOpenProviders,
+  onOpenServices,
   onOpenLSP,
   onOpenDiagnostics,
   onOpenSessions,
@@ -197,6 +199,7 @@ export function ChatPage({
               items={[
                 { icon: History, label: 'Checkpoints', onClick: onOpenCheckpoints },
                 { icon: Server, label: 'Model Providers', onClick: onOpenProviders },
+                { icon: Globe, label: 'External Services', onClick: onOpenServices },
                 { icon: Bot, label: 'Agent Presets', onClick: onOpenAgents },
                 { icon: Zap, label: 'Hooks', onClick: onOpenHooks },
                 { icon: Plug, label: 'MCP Servers', onClick: onOpenMCP },

scripts/build-standalone.ts

@@ -0,0 +1,285 @@
+#!/usr/bin/env bun
+/**
+ * Build Standalone Server with Embedded Web UI and WASM
+ *
+ * 构建包含 Web UI 和 WASM 文件的独立服务器可执行文件
+ *
+ * Usage:
+ *   bun run scripts/build-standalone.ts
+ *   bun run scripts/build-standalone.ts --output ./dist/ai-assistant
+ */
+
+import * as fs from 'fs';
+import * as path from 'path';
+import { $ } from 'bun';
+
+const ROOT_DIR = path.join(import.meta.dir, '..');
+const WEB_DIR = path.join(ROOT_DIR, 'packages/web');
+const SERVER_DIR = path.join(ROOT_DIR, 'packages/server');
+const NODE_MODULES = path.join(ROOT_DIR, 'node_modules');
+const CORE_DIR = path.join(ROOT_DIR, 'packages/core');
+
+// 解析命令行参数
+function parseArgs(): { output: string } {
+  const args = process.argv.slice(2);
+  let output = path.join(ROOT_DIR, 'dist/ai-assistant');
+
+  for (let i = 0; i < args.length; i++) {
+    if (args[i] === '--output' || args[i] === '-o') {
+      output = args[i + 1];
+      i++;
+    } else if (args[i] === '--help' || args[i] === '-h') {
+      console.log(`
+Build Standalone Server with Embedded Web UI
+
+Usage:
+  bun run scripts/build-standalone.ts [options]
+
+Options:
+  -o, --output <path>  Output executable path (default: dist/ai-assistant)
+  -h, --help           Show this help message
+      `);
+      process.exit(0);
+    }
+  }
+
+  return { output };
+}
+
+async function main() {
+  const { output } = parseArgs();
+  const outputDir = path.dirname(output);
+
+  console.log('🚀 Building standalone AI Assistant...\n');
+
+  // 1. 构建 Core
+  console.log('📦 Building @ai-assistant/core...');
+  await $`pnpm --filter @ai-assistant/core build`.quiet();
+  console.log('   ✅ Core built\n');
+
+  // 2. 构建 Web
+  console.log('📦 Building @ai-assistant/web...');
+  await $`pnpm --filter @ai-assistant/web build`.quiet();
+  console.log('   ✅ Web built\n');
+
+  // 3. 生成嵌入式 Web 资源
+  console.log('📝 Embedding Web UI assets...');
+  const webDistDir = path.join(WEB_DIR, 'dist');
+  const embeddedAssetsFile = path.join(SERVER_DIR, 'src/embedded-assets.generated.ts');
+  await generateEmbeddedAssets(webDistDir, embeddedAssetsFile);
+  console.log('   ✅ Assets embedded\n');
+
+  // 3.5. 生成嵌入式 WASM 资源
+  console.log('📝 Embedding WASM files...');
+  const embeddedWasmFile = path.join(SERVER_DIR, 'src/embedded-wasm.generated.ts');
+  await generateEmbeddedWasm(embeddedWasmFile);
+  console.log('   ✅ WASM embedded\n');
+
+  // 4. 构建 Server（使用嵌入式入口）
+  console.log('📦 Building standalone server...');
+
+  // 确保输出目录存在
+  if (!fs.existsSync(outputDir)) {
+    fs.mkdirSync(outputDir, { recursive: true });
+  }
+
+  await $`bun build ${SERVER_DIR}/src/bin/standalone.ts --compile --outfile ${output}`.quiet();
+  console.log('   ✅ Server built\n');
+
+  // 5. 清理生成的文件
+  if (fs.existsSync(embeddedAssetsFile)) {
+    fs.unlinkSync(embeddedAssetsFile);
+  }
+  if (fs.existsSync(embeddedWasmFile)) {
+    fs.unlinkSync(embeddedWasmFile);
+  }
+
+  // 6. 显示结果
+  const stats = fs.statSync(output);
+  const sizeMB = (stats.size / 1024 / 1024).toFixed(1);
+
+  console.log('═══════════════════════════════════════════');
+  console.log('✅ Build complete!');
+  console.log('═══════════════════════════════════════════');
+  console.log(`   Output: ${output}`);
+  console.log(`   Size:   ${sizeMB} MB`);
+  console.log('');
+  console.log('Usage:');
+  console.log(`   ${output} --help`);
+  console.log(`   ${output} --port 3000`);
+  console.log('═══════════════════════════════════════════');
+}
+
+/**
+ * 将 Web dist 目录的所有文件转换为嵌入式 TypeScript 模块
+ */
+async function generateEmbeddedAssets(webDistDir: string, outputFile: string): Promise<void> {
+  const assets: Map<string, { content: string; mimeType: string }> = new Map();
+
+  // 递归收集所有文件
+  function collectFiles(dir: string, basePath: string = '') {
+    const entries = fs.readdirSync(dir, { withFileTypes: true });
+
+    for (const entry of entries) {
+      const fullPath = path.join(dir, entry.name);
+      const relativePath = basePath ? `${basePath}/${entry.name}` : entry.name;
+
+      if (entry.isDirectory()) {
+        collectFiles(fullPath, relativePath);
+      } else {
+        const content = fs.readFileSync(fullPath);
+        const base64 = content.toString('base64');
+        const mimeType = getMimeType(entry.name);
+        assets.set('/' + relativePath, { content: base64, mimeType });
+      }
+    }
+  }
+
+  collectFiles(webDistDir);
+
+  // 生成 TypeScript 代码
+  const lines: string[] = [
+    '// Auto-generated by scripts/build-standalone.ts',
+    '// Do not edit manually',
+    '',
+    'export interface EmbeddedAsset {',
+    '  content: string;  // base64 encoded',
+    '  mimeType: string;',
+    '}',
+    '',
+    'export const EMBEDDED_ASSETS: Map<string, EmbeddedAsset> = new Map([',
+  ];
+
+  for (const [path, asset] of assets) {
+    // 转义特殊字符
+    const escapedContent = asset.content;
+    lines.push(`  ['${path}', { content: '${escapedContent}', mimeType: '${asset.mimeType}' }],`);
+  }
+
+  lines.push(']);');
+  lines.push('');
+  lines.push('export function getAsset(path: string): EmbeddedAsset | undefined {');
+  lines.push('  return EMBEDDED_ASSETS.get(path);');
+  lines.push('}');
+  lines.push('');
+  lines.push('export function decodeAsset(asset: EmbeddedAsset): Uint8Array {');
+  lines.push('  const binaryString = atob(asset.content);');
+  lines.push('  const bytes = new Uint8Array(binaryString.length);');
+  lines.push('  for (let i = 0; i < binaryString.length; i++) {');
+  lines.push('    bytes[i] = binaryString.charCodeAt(i);');
+  lines.push('  }');
+  lines.push('  return bytes;');
+  lines.push('}');
+  lines.push('');
+
+  fs.writeFileSync(outputFile, lines.join('\n'), 'utf-8');
+  console.log(`   Generated ${assets.size} embedded assets`);
+}
+
+/**
+ * 根据文件扩展名获取 MIME 类型
+ */
+function getMimeType(filename: string): string {
+  const ext = path.extname(filename).toLowerCase();
+  const mimeTypes: Record<string, string> = {
+    '.html': 'text/html',
+    '.css': 'text/css',
+    '.js': 'application/javascript',
+    '.json': 'application/json',
+    '.svg': 'image/svg+xml',
+    '.png': 'image/png',
+    '.jpg': 'image/jpeg',
+    '.jpeg': 'image/jpeg',
+    '.gif': 'image/gif',
+    '.ico': 'image/x-icon',
+    '.woff': 'font/woff',
+    '.woff2': 'font/woff2',
+    '.ttf': 'font/ttf',
+    '.eot': 'application/vnd.ms-fontobject',
+    '.webmanifest': 'application/manifest+json',
+    '.txt': 'text/plain',
+    '.xml': 'application/xml',
+  };
+  return mimeTypes[ext] || 'application/octet-stream';
+}
+
+/**
+ * 生成嵌入式 WASM 模块
+ * 包含 tree-sitter.wasm 和可用的语言 WASM 文件
+ */
+async function generateEmbeddedWasm(outputFile: string): Promise<void> {
+  const wasmFiles: Map<string, string> = new Map();
+
+  // 查找 web-tree-sitter 的 tree-sitter.wasm
+  const treeSitterWasmPaths = [
+    path.join(NODE_MODULES, '.pnpm/web-tree-sitter@0.25.10/node_modules/web-tree-sitter/tree-sitter.wasm'),
+    path.join(NODE_MODULES, 'web-tree-sitter/tree-sitter.wasm'),
+  ];
+
+  for (const wasmPath of treeSitterWasmPaths) {
+    if (fs.existsSync(wasmPath)) {
+      const content = fs.readFileSync(wasmPath);
+      wasmFiles.set('tree-sitter.wasm', content.toString('base64'));
+      console.log(`   Found tree-sitter.wasm (${(content.length / 1024).toFixed(1)} KB)`);
+      break;
+    }
+  }
+
+  // 查找语言特定的 WASM 文件
+  const languageWasmPatterns = [
+    // pnpm 格式
+    { dir: path.join(NODE_MODULES, '.pnpm'), pattern: /tree-sitter-(\w+)@.*\/tree-sitter-\1\.wasm$/ },
+  ];
+
+  // 扫描 node_modules/.pnpm 查找语言 WASM
+  const pnpmDir = path.join(NODE_MODULES, '.pnpm');
+  if (fs.existsSync(pnpmDir)) {
+    const entries = fs.readdirSync(pnpmDir);
+    for (const entry of entries) {
+      if (entry.startsWith('tree-sitter-') && !entry.startsWith('tree-sitter-wasms')) {
+        // 提取语言名称
+        const match = entry.match(/^tree-sitter-(\w+)@/);
+        if (match) {
+          const lang = match[1];
+          const wasmPath = path.join(pnpmDir, entry, 'node_modules', `tree-sitter-${lang}`, `tree-sitter-${lang}.wasm`);
+          if (fs.existsSync(wasmPath)) {
+            const content = fs.readFileSync(wasmPath);
+            wasmFiles.set(`tree-sitter-${lang}.wasm`, content.toString('base64'));
+            console.log(`   Found tree-sitter-${lang}.wasm (${(content.length / 1024).toFixed(1)} KB)`);
+          }
+        }
+      }
+    }
+  }
+
+  if (wasmFiles.size === 0) {
+    console.warn('   ⚠️  No WASM files found');
+  }
+
+  // 生成 TypeScript 代码
+  const lines: string[] = [
+    '// Auto-generated by scripts/build-standalone.ts',
+    '// Do not edit manually',
+    '',
+    '/**',
+    ' * Embedded WASM files for tree-sitter',
+    ' * Keys: wasm filename, Values: base64 encoded content',
+    ' */',
+    'export const EMBEDDED_WASM: Map<string, string> = new Map([',
+  ];
+
+  for (const [name, base64] of wasmFiles) {
+    lines.push(`  ['${name}', '${base64}'],`);
+  }
+
+  lines.push(']);');
+  lines.push('');
+
+  fs.writeFileSync(outputFile, lines.join('\n'), 'utf-8');
+  console.log(`   Generated ${wasmFiles.size} embedded WASM files`);
+}
+
+main().catch((error) => {
+  console.error('❌ Build failed:', error);
+  process.exit(1);
+});