diff --git a/apps/ai-game-creator-shell/tests/authFailureReporting.test.tsx b/apps/ai-game-creator-shell/tests/authFailureReporting.test.tsx
index c83a3a5fa..1b7c2bd4e 100644
--- a/apps/ai-game-creator-shell/tests/authFailureReporting.test.tsx
+++ b/apps/ai-game-creator-shell/tests/authFailureReporting.test.tsx
@@ -144,7 +144,10 @@ describe('认证失败的上报判据', () => {
       await waitFor(() => expect(reportCalls()).toHaveLength(1));
       expect(reportCalls()[0]?.[1]).toMatchObject({
         source: 'unhandledrejection',
-        message: '未知客户端错误',
+        message: JSON.stringify({
+          type: 'authNetworkFailure',
+          reason: 'unreachable',
+        }),
       });
     } finally {
       uninstall();
diff --git a/apps/ai-game-creator-shell/tests/clientAuthErrorCarrier.test.ts b/apps/ai-game-creator-shell/tests/clientAuthErrorCarrier.test.ts
index ac048cd8f..c343247a6 100644
--- a/apps/ai-game-creator-shell/tests/clientAuthErrorCarrier.test.ts
+++ b/apps/ai-game-creator-shell/tests/clientAuthErrorCarrier.test.ts
@@ -3,8 +3,8 @@
  * 认证命令失败的 JS 侧载体。
  *
  * `invokeClientAuth` 是薄包装：Rust 的结构化拒绝原样装进 `ClientAuthErrorWrapper.error`，不读变体
- * 字段（`serverMessage` 之类不保证每个变体都有）、不注入上下文、载体自身 `message` 留空；分流只按
- * `error.error.type`。另外用编译期用例钉住变体全集：无字段变体直接取固定文案，带载荷变体先
+ * 字段（`serverMessage` 之类不保证每个变体都有）、不注入上下文，载体构造时把整份载荷序列化进
+ * `Error.message`；分流只按 `error.error.type`。另外用编译期用例钉住变体全集：无字段变体直接取固定文案，带载荷变体先
  * `as` 取具名类型，可枚举的细分再按类型化 reason 分流；漏列任何变体或 reason，
  * `expectNever(...)` 都编译不过。
  */
@@ -147,7 +147,7 @@ describe('认证命令失败的 JS 侧载体', () => {
 
     expect(failure).toBeInstanceOf(ClientAuthErrorWrapper);
     expect((failure as ClientAuthErrorWrapper).error).toBe(rejection);
-    expect((failure as Error).message).toBe('');
+    expect((failure as Error).message).toBe(JSON.stringify(rejection));
   });
 
   it('认证桥未安装时保持原样抛出，不包装成命令失败', async () => {
@@ -175,7 +175,8 @@ describe('认证命令失败的 JS 侧载体', () => {
     ).catch((error: unknown) => error);
 
     expect(failure).toBeInstanceOf(ClientAuthErrorWrapper);
-    expect((failure as Error).message).toBe('');
+    // Error 没有可枚举属性，序列化就是空对象；上报链路对真 Error 优先用其自身 message/stack。
+    expect((failure as Error).message).toBe('{}');
     expect((failure as ClientAuthErrorWrapper).error).toBe(rejection);
   });
 });
diff --git a/apps/ai-game-creator-shell/tests/errorReporting.test.ts b/apps/ai-game-creator-shell/tests/errorReporting.test.ts
index 26f83c1bd..dc4e8e9c7 100644
--- a/apps/ai-game-creator-shell/tests/errorReporting.test.ts
+++ b/apps/ai-game-creator-shell/tests/errorReporting.test.ts
@@ -84,6 +84,7 @@ import {
   submitErrorReportBatch,
   subscribeClientErrorEvents,
 } from '../src/services/errorReporting';
+import type { ClientAuthError } from '../src/services/generated/ClientAuthError';
 
 describe('客户端错误报告池', () => {
   afterEach(() => {
@@ -209,7 +210,7 @@ describe('客户端错误报告池', () => {
     expect(await getPendingClientErrorEvents()).toEqual([event]);
   });
 
-  it('解包 ClientAuthErrorWrapper 里的原始拒绝值，上下文只认显式入参', async () => {
+  it('解包 ClientAuthErrorWrapper，把载体序列化后的 message 原样上报，上下文只认显式入参', async () => {
     const original = { type: 'authNetworkFailure', reason: 'unreachable' };
 
     await captureClientError(new ClientAuthErrorWrapper(original), {
@@ -219,13 +220,31 @@ describe('客户端错误报告池', () => {
 
     expect(invoke).toHaveBeenCalledWith('report_client_error', {
       source: 'unhandledrejection',
-      message: '未知客户端错误',
+      message: JSON.stringify(original),
       stack: expect.any(String),
       action: 'login',
       page: undefined,
     });
   });
 
+  it('包装的真 Error 仍优先用它的 message/stack，而不是空对象序列化', async () => {
+    // Tauri 在映射外抛真 Error 属于它的缺陷：载体照装，但取文案时仍用这颗 Error 自己。
+    const original = new Error('IPC 桥接异常');
+
+    await captureClientError(
+      new ClientAuthErrorWrapper(original as unknown as ClientAuthError),
+      { source: 'unhandledrejection' },
+    );
+
+    expect(invoke).toHaveBeenCalledWith('report_client_error', {
+      source: 'unhandledrejection',
+      message: 'IPC 桥接异常',
+      stack: original.stack,
+      action: undefined,
+      page: undefined,
+    });
+  });
+
   it('保留 API 路由但隐藏 URL origin 与查询参数', () => {
     const sanitized = normalizeDiagnosticText(
       '请求超时：https://dev.genarrative.world/api/llm/models?token=secret#fragment',