实现 SFX V2 T1 契约与提示词基础

统一前后端 SFX Prompt Unicode canonicalization、字符计数和 2048 边界
固化 52 个音效预设、追加规则及跨语言测试向量
演进共享音频请求响应、duration、Loop 和 V2 metadata 契约
增加 External model 输入矩阵纯函数并保持正式接线归属 T5
补齐前端提交、读取、深拷贝与请求边界回归测试
更新共享计划并标记 T1 完成且当前不可发布

src/components/image-editor/ImageCanvasLayerCommandModel.test.ts

@@ -190,6 +190,34 @@ describe('ImageCanvasLayerCommandModel', () => {
     expect(removeCanvasLayers(layers, ['first'])).toEqual([layers[1]]);
   });
 
+  it('deep-clones authoritative SFX metadata with generation inputs', () => {
+    const layer = createLayer({
+      id: 'sound-effect',
+      generationInputs: {
+        fields: [{ title: '用户描述', value: '金币落地' }],
+        references: [],
+        soundEffect: {
+          schemaVersion: 2,
+          userPrompt: '金币落地',
+          actualPrompt: 'A coin landing sound',
+          model: 'eleven_text_to_sound_v2',
+          durationMode: 'auto',
+          requestedDurationSeconds: null,
+          actualDurationSeconds: 4.8,
+          loop: false,
+        },
+      },
+    });
+    const clipboard = createCanvasLayerClipboard([layer], [layer.id], 'copy');
+    const cloned = clipboard?.layers[0];
+
+    expect(cloned?.generationInputs).toEqual(layer.generationInputs);
+    expect(cloned?.generationInputs).not.toBe(layer.generationInputs);
+    expect(cloned?.generationInputs?.soundEffect).not.toBe(
+      layer.generationInputs?.soundEffect,
+    );
+  });
+
   it('moves layer z-indexes with the same commands as the context menu', () => {
     const layers = [
       createLayer({ id: 'bottom', zIndex: 1 }),