feat(short-drama-agent-front): 调整工作台布局与图库瀑布流

tests/features/subject-images/layout.test.ts

@@ -1,31 +1,11 @@
 import { describe, expect, it } from 'vitest'
-import { formCoverAspectRatio } from '@/features/subject-images/layout'
-import { formFixture, imageFixture } from '@/features/subject-images/testing/fixtures'
+import { masonryRowSpan } from '@/features/subject-images/layout'
 
-describe('图库瀑布流图片比例', () => {
-    it.each([
-        [800, 1200],
-        [1600, 900],
-        [1024, 1024]
-    ])('保留正式图片尺寸 %s × %s', (width, height) => {
-        const form = formFixture()
-        form.images = [imageFixture({ width, height })]
-        expect(formCoverAspectRatio(form)).toBe(`${width} / ${height}`)
-    })
-
-    it.each([null, 0, -1, NaN, Infinity])('尺寸 %s 无效时使用稳定占位比例', width => {
-        const form = formFixture()
-        form.images = [imageFixture({ width })]
-        expect(formCoverAspectRatio(form)).toBe('4 / 3')
-        form.images = [imageFixture({ height: width })]
-        expect(formCoverAspectRatio(form)).toBe('4 / 3')
-    })
-
-    it('无图片时保留占位，候选封面也使用自己的尺寸', () => {
-        const form = formFixture()
-        form.images = []
-        expect(formCoverAspectRatio(form)).toBe('4 / 3')
-        form.images = [imageFixture({ isPrimary: false, width: 800, height: 1200 })]
-        expect(formCoverAspectRatio(form)).toBe('800 / 1200')
+describe('图库瀑布流卡片布局', () => {
+    it('按卡片实际高度计算网格跨度', () => {
+        expect(masonryRowSpan(420, 1, 20)).toBe(21)
+        expect(masonryRowSpan(421, 1, 20)).toBe(21)
+        expect(masonryRowSpan(422, 1, 20)).toBe(22)
+        expect(masonryRowSpan(0, 1, 20)).toBe(1)
     })
 })