feat: adapt image tuning by engine

tests/evolink-image-client.test.ts

@@ -34,15 +34,18 @@ describe("EvoLink image client helpers", () => {
   it("maps inpainting original and mask URLs", () => {
     const payload = buildEvolinkImagePayload("image.inpaint", {
       prompt: "移除背景杂物",
+      quality: "high",
       imageUrls: ["https://example.com/original.png", "https://example.com/mask.png"]
     }, {
       baseUrl: "https://api.evolink.ai",
-      model: "gpt-image-2"
+      model: "gpt-image-2",
+      quality: "medium"
     });
 
     expect(payload).toMatchObject({
       image_urls: ["https://example.com/original.png"],
-      mask_url: "https://example.com/mask.png"
+      mask_url: "https://example.com/mask.png",
+      quality: "high"
     });
   });