Complete world-model release: HTTP batch 1

Adds only verified files under world_models/v1/. Existing repository contents and main remain unchanged. Administrator merge requested.

world_models/v1/videos/seedance2/without_negative/bouncing_ball_rubber/seed_045.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:db086941753c87b782e509ad0e1167c48db2eb5106ccc78ca79763da5ada2f0d
+size 765996