feat(castlove-preview): 透传 showSlider prop

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/components/lenticular/CastloveLenticularPreview.vue

@@ -7,6 +7,7 @@
 				gyro-source="simulation"
 				:approximate-preview="true"
 				tilt-hint-text="滑动卡片预览光栅效果"
+				:show-slider="showSlider"
 				@simulate="simulate"
 			/>
 		</view>
@@ -25,6 +26,7 @@ const props = defineProps({
 		type: String,
 		default: '',
 	},
+	showSlider: { type: Boolean, default: false },
 })
 
 const lenticularLayers = ref(buildLenticularLayers(props.imageSrc || ''))