增加即梦图片5.0和视频2.5的能力

tests/image-templates.test.ts

@@ -97,6 +97,11 @@ describe("image templates", () => {
     });
     expect(() => normalizeImageTemplateCreate({ name: "", prompt: "x" })).toThrow("模板名称不能为空");
     expect(() => normalizeImageTemplateCreate({ name: "x", prompt: "x", previewImageUrl: "javascript:alert(1)" })).toThrow("效果预览图地址");
+    expect(normalizeImageTemplateCreate({
+      name: "Seedream",
+      prompt: "基础生图",
+      settings: { engine: "seedream", size: "1.5k", outputFormat: "JPEG", optimizeMode: "fast" }
+    }).settings).toEqual({ engine: "seedream", size: "1.5K", outputFormat: "jpeg", optimizeMode: "fast" });
   });
 
   it("extracts prompt material placeholders for template upload slots", () => {