Fix prop confirmation bug, add Wan 2.7 model, refine multiple UI details, improve prop generation quality and aspect ratio, remove text overlays from Asset Center created images, and optimize prop filtering logic

tests/unit/assets/location-backed-assets.test.ts

@@ -54,6 +54,7 @@ describe('location-backed assets service', () => {
       novelPromotionProjectId: 'novel-project-1',
       name: 'Bronze Dagger',
       summary: 'Old bronze dagger',
+      initialDescription: 'A bronze dagger with a carved handle and weathered blade',
       kind: 'prop',
     })
 
@@ -62,7 +63,7 @@ describe('location-backed assets service', () => {
         {
           locationId: result.id,
           imageIndex: 0,
-          description: 'Old bronze dagger',
+          description: 'A bronze dagger with a carved handle and weathered blade',
           availableSlots: '[]',
         },
       ],