3D 提交失败提示不再直接显示传输层英文文案

- resolveModel3dGenerationErrorMessage 对超时单独给出中文可重试提示
- fetch 失败与中断收敛到中文兜底，服务端文案仍原样透出
- 补服务端文案透出、传输层兜底与超时提示的用例

src/components/image-editor/model3d-generation/Model3dGenerationSubmission.test.ts

@@ -11,9 +11,12 @@ import {
 } from './Model3dGenerationFormModel';
 import {
   buildModel3dSubmissionPlan,
+  MODEL3D_GENERATION_FAILURE_MESSAGE,
+  MODEL3D_GENERATION_TIMEOUT_MESSAGE,
   MODEL3D_IMAGE_SOURCE_REQUIRED_MESSAGE,
   MODEL3D_PROJECT_REQUIRED_MESSAGE,
   MODEL3D_TEXT_PROMPT_REQUIRED_MESSAGE,
+  resolveModel3dGenerationErrorMessage,
   resolveModel3dImageSource,
   resolveModel3dRequestKey,
   resolveModel3dResultTitle,
@@ -336,3 +339,39 @@ describe('Idempotency-Key', () => {
     expect(right).toBe(left);
   });
 });
+
+describe('resolveModel3dGenerationErrorMessage', () => {
+  it('服务端给的文案原样透出', () => {
+    expect(
+      resolveModel3dGenerationErrorMessage(
+        new Error('3D 生成服务当前限流，请稍后重试。'),
+      ),
+    ).toBe('3D 生成服务当前限流，请稍后重试。');
+    expect(resolveModel3dGenerationErrorMessage('落点不可用')).toBe(
+      '落点不可用',
+    );
+  });
+
+  it('传输层英文技术文案换成中文兜底', () => {
+    expect(
+      resolveModel3dGenerationErrorMessage(new TypeError('Failed to fetch')),
+    ).toBe(MODEL3D_GENERATION_FAILURE_MESSAGE);
+    expect(
+      resolveModel3dGenerationErrorMessage(
+        new DOMException('The operation was aborted.', 'AbortError'),
+      ),
+    ).toBe(MODEL3D_GENERATION_FAILURE_MESSAGE);
+    expect(resolveModel3dGenerationErrorMessage(null)).toBe(
+      MODEL3D_GENERATION_FAILURE_MESSAGE,
+    );
+  });
+
+  it('超时单独给出可重试的提示', () => {
+    const timeout = new Error('请求超时：60000ms');
+    timeout.name = 'TimeoutError';
+
+    expect(resolveModel3dGenerationErrorMessage(timeout)).toBe(
+      MODEL3D_GENERATION_TIMEOUT_MESSAGE,
+    );
+  });
+});

src/components/image-editor/model3d-generation/Model3dGenerationSubmission.ts

@@ -1,5 +1,6 @@
 import type { ExternalGenerationJobStatusRecord } from '../../../../packages/shared/src/contracts/externalGeneration';
 import type { Model3dGenerationSource } from '../../../../packages/shared/src/contracts/model3d';
+import { isAbortError, isTimeoutError } from '../../../services/apiClient';
 import type {
   EditorCanvasGenerationCompletionInput,
   Model3dGenerationSubmissionResponse,
@@ -22,6 +23,10 @@ export const MODEL3D_IMAGE_SOURCE_REQUIRED_MESSAGE =
   '请先选择一张画布图片或素材库图片';
 export const MODEL3D_PROJECT_REQUIRED_MESSAGE =
   '请先保存当前画布工程，再生成 3D 模型';
+export const MODEL3D_GENERATION_FAILURE_MESSAGE =
+  '生成 3D 模型失败，请稍后重试。';
+export const MODEL3D_GENERATION_TIMEOUT_MESSAGE =
+  '3D 生成请求超时，请稍后重试。';
 
 export type Model3dSubmissionPlan = {
   endpoint: Model3dPricingEndpoint;
@@ -213,11 +218,26 @@ export function model3dQueueStateFromResponse(
 }
 
 export function resolveModel3dGenerationErrorMessage(error: unknown): string {
+  if (isTimeoutError(error)) {
+    return MODEL3D_GENERATION_TIMEOUT_MESSAGE;
+  }
+  // 传输层失败的 message 是英文技术文案（`Failed to fetch` / `The operation was
+  // aborted.`），不能直接当用户提示；只有服务端给出的 message 才是面向用户的。
+  if (isAbortError(error) || isFetchFailureError(error)) {
+    return MODEL3D_GENERATION_FAILURE_MESSAGE;
+  }
   if (error instanceof Error && error.message.trim()) {
     return error.message.trim();
   }
   if (typeof error === 'string' && error.trim()) {
     return error.trim();
   }
-  return '生成 3D 模型失败，请稍后重试。';
+  return MODEL3D_GENERATION_FAILURE_MESSAGE;
+}
+
+/** fetch 的网络层失败统一是 `TypeError: Failed to fetch`。 */
+function isFetchFailureError(error: unknown) {
+  return (
+    error instanceof TypeError && /failed to fetch|network/i.test(error.message)
+  );
 }