fix: 添加 React Error Boundary 防止生产环境渲染崩溃

增强 SentryErrorBoundary 组件，捕获渲染错误时输出诊断信息
（错误消息 + component stack）到 stderr 和终端，而非静默返回
null。在 replLauncher 根节点和 Messages 组件层级包裹 Error
Boundary，防止 Ink 内部的 Error Boundary 直接终止进程。

Co-Authored-By: glm-5-turbo <zai-org@claude-code-best.win>

src/replLauncher.tsx

@@ -18,11 +18,14 @@ export async function launchRepl(
   renderAndRun: (root: Root, element: React.ReactNode) => Promise<void>,
 ): Promise<void> {
   const { App } = await import('./components/App.js');
+  const { SentryErrorBoundary } = await import('./components/SentryErrorBoundary.js');
   const { REPL } = await import('./screens/REPL.js');
   await renderAndRun(
     root,
-    <App {...appProps}>
-      <REPL {...replProps} />
-    </App>,
+    <SentryErrorBoundary name="RootREPLBoundary">
+      <App {...appProps}>
+        <REPL {...replProps} />
+      </App>
+    </SentryErrorBoundary>,
   );
 }