Rename run_030 -> ckpts; update model card description

README.md

@@ -21,7 +21,7 @@ generates two-person interactions phase-by-phase in a Ping-Pong manner.
 
 | file | description |
 |------|-------------|
-| `run_030/best.pt` | executor checkpoint (`HHIPartnerModel`), ~1.86 GB |
+| `ckpts/best.pt` | solo-to-social motion executor, ~1.86 GB |
 
 ## Usage
 
@@ -29,7 +29,7 @@ generates two-person interactions phase-by-phase in a Ping-Pong manner.
 # In the SocialStructureHHI repo:
 #   https://github.com/EngineeringAI-LAB/SocialStructureHHI
 from huggingface_hub import hf_hub_download
-ckpt = hf_hub_download("EngineeringAI-LAB/SocialStructure", "run_030/best.pt")
+ckpt = hf_hub_download("EngineeringAI-LAB/SocialStructure", "ckpts/best.pt")
 ```
 
 ```bash