增加即梦图片5.0和视频2.5的能力

tests/video-settings.test.ts

@@ -4,10 +4,12 @@ import {
   VIDEO_DURATION_DEFAULT,
   VIDEO_DURATION_MAX,
   VIDEO_DURATION_MIN,
+  SEEDANCE_25_MODEL,
   clampVideoDuration,
   normalizeVideoDuration,
   normalizeVideoRatio,
-  normalizeVideoResolution
+  normalizeVideoResolution,
+  seedanceDurationOptions
 } from "@/lib/video-settings";
 
 describe("video settings", () => {
@@ -22,6 +24,12 @@ describe("video settings", () => {
     expect(clampVideoDuration(VIDEO_DURATION_AUTO, VIDEO_DURATION_DEFAULT, { allowAuto: false })).toBe(VIDEO_DURATION_MIN);
   });
 
+  it("allows Seedance 2.5 durations through 30 seconds without changing 2.0", () => {
+    expect(clampVideoDuration(30, VIDEO_DURATION_DEFAULT, { model: SEEDANCE_25_MODEL })).toBe(30);
+    expect(clampVideoDuration(30)).toBe(VIDEO_DURATION_MAX);
+    expect(seedanceDurationOptions(SEEDANCE_25_MODEL).at(-1)).toBe(30);
+  });
+
   it("keeps empty duration optional and falls back for invalid values", () => {
     expect(normalizeVideoDuration(undefined)).toBeUndefined();
     expect(normalizeVideoDuration("")).toBeUndefined();