Update dataset statistics table

README.md

@@ -97,6 +97,10 @@ The 3-digit `NNN` index restarts at 0 within each `<object>`.
 |---|---|---|---:|---:|---:|---:|
 | `pickup_table` | Tabletop pick-up — grasp an object from a table surface, lift, transport | RoboCasa-derived 3D assets | 685 | 2,991 | 10 s | 747,750 |
 | `pickup_ground` | Ground pick-up — kneel to grasp an object from the floor and stand back up | RoboCasa-derived 3D assets | 631 | 1,613 | 15 s | 611,625 |
+| `sitting` | Sitting — sit down on chair-like objects | Hunyuan3D-generated 3D assets | 189 | 1,748 | 5 s | 218,500 |
+| `slope` | Terrain slope locomotion — walk over inclined surfaces | Procedural terrain assets | 200 | 1,880 | 10 s | 470,000 |
+| `curb` | Terrain curb locomotion — step over curb assets | Procedural terrain assets | 200 | 1,769 | 10 s | 442,250 |
+| `stair` (`stair_p1` + `stair_p2`) | Stair locomotion — ascend and descend stair assets | Generated synthetic and real stair assets | 5,626 | 12,188 | 10 s | 3,047,000 |
 
 Additional categories (tabletop / ground manipulation) are planned for subsequent releases.