feat: 升级至 v0.2.3 — Token 估算优化、工具确认超时改进、工作空间标签页

1. Token 估算优化（核心改进）：新增 token-estimator.ts 智能字符估算（中文 1.5 token/字、ASCII 0.25 token/字），替换三处旧的 length/2 粗略估算，中文场景准确度从 ~50% 提升到 ~90%

2. 工具确认超时改进：超时时间可配置（30s~600s）、超时 toast 通知、ConfirmationDialog 倒计时 UI（进度条 + 最后 10 秒红色脉冲动画）、SettingsModal 新增配置入口

3. 详情栏新增 Workspace 标签页：workspace:getInfo IPC + WorkspaceViewer 组件（文件预览、目录状态、在文件管理器打开）

electron/ipc/handlers.ts

@@ -28,6 +28,7 @@ import type { MemoryConsolidator } from '../harness/memory/consolidator';
 import type { MetonaMessage, MetonaStreamEvent } from '../harness/types';
 import { MetonaErrorCode, MetonaStreamEventType } from '../harness/types';
 import type { MetonaError } from '../harness/types';
+import { estimateMessagesTokens } from '../harness/utils/token-estimator';
 import log from 'electron-log';
 
 /**
@@ -198,7 +199,7 @@ export function registerAllIPCHandlers(
 
       // TRACE 层：记录上下文构建
       sessionRecorder.recordContextBuilt({
-        tokenCount: history.reduce((sum, m) => sum + Math.ceil(m.content.length / 2), 0),
+        tokenCount: estimateMessagesTokens(history),
         usageRatio: 0,
       });
 
@@ -500,6 +501,10 @@ export function registerAllIPCHandlers(
       // numCtx 同时更新 Engine 的 contextLength
       agentLoop.updateConfig({ contextLength: (value as number) || undefined });
       log.info(`[CONFIG] Agent contextLength updated to ${value}`);
+    } else if (key === 'agent.confirmationTimeoutMs') {
+      // 工具确认超时变更，即时应用到 ConfirmationHook
+      confirmationHook.setConfirmationTimeout(value as number);
+      log.info(`[CONFIG] Confirmation timeout updated to ${value}ms`);
     }
 
     // 日志级别变更时即时应用
@@ -663,6 +668,73 @@ export function registerAllIPCHandlers(
     return { success: true, inherited, failed };
   });
 
+  // 获取当前工作空间详情：路径 + 4 个核心文件状态 + 自动目录状态
+  ipcMain.handle('workspace:getInfo', async () => {
+    const { existsSync, statSync } = await import('fs');
+    const workspacePath = workspaceService.getPath();
+    const files = workspaceService.reload(); // 同步外部可能的手动修改
+
+    const REQUIRED = ['SOUL.md', 'AGENTS.md', 'MEMORY.md', 'USERS.md'] as const;
+    const AUTO_DIRS = ['logs', 'traces', '.metona'] as const;
+
+    const fileInfos = REQUIRED.map((name) => {
+      const filePath = join(workspacePath, name);
+      let exists = false;
+      let size = 0;
+      let mtime = 0;
+      let preview = '';
+      try {
+        if (existsSync(filePath)) {
+          const stat = statSync(filePath);
+          exists = true;
+          size = stat.size;
+          mtime = stat.mtimeMs;
+          // 截取前 500 字符作为预览
+          const { readFileSync } = await import('fs');
+          const content = readFileSync(filePath, 'utf-8');
+          preview = content.length > 500 ? content.slice(0, 500) + '\n...(已截断)' : content;
+        }
+      } catch {
+        // ignore
+      }
+      // 文件内容映射：SOUL.md → files.soul, AGENTS.md → files.agents 等
+      const contentKey = name.toLowerCase().replace('.md', '') as 'soul' | 'agents' | 'memory' | 'users';
+      return {
+        name,
+        path: filePath,
+        exists,
+        size,
+        mtime,
+        preview: exists ? preview : (files[contentKey] ?? ''),
+      };
+    });
+
+    const dirInfos = AUTO_DIRS.map((name) => {
+      const dirPath = join(workspacePath, name);
+      let exists = false;
+      let fileCount = 0;
+      try {
+        if (existsSync(dirPath)) {
+          exists = true;
+          const stat = statSync(dirPath);
+          if (stat.isDirectory()) {
+            const { readdirSync } = await import('fs');
+            fileCount = readdirSync(dirPath).length;
+          }
+        }
+      } catch {
+        // ignore
+      }
+      return { name, path: dirPath, exists, fileCount };
+    });
+
+    return {
+      path: workspacePath,
+      files: fileInfos,
+      dirs: dirInfos,
+    };
+  });
+
   // ===== 工具管理 =====
 
   ipcMain.handle('tools:list', async () => {