Fix Task 2 model artifact paths

topic2/best_model_summary.json

@@ -7,7 +7,7 @@
       "best_step": 14000,
       "validation_action_l1": 0.47554418712854385,
       "zero_shot_D_action_l1": 0.4962553956359625,
-      "path_in_repo": "act_calvin_A_best/pretrained_model",
+      "path_in_repo": "topic2/act_calvin_A_best/pretrained_model",
       "files": [
         "config.json",
         "model.safetensors",
@@ -24,7 +24,7 @@
       "best_step": 27000,
       "validation_action_l1": 0.42779327780008314,
       "zero_shot_D_action_l1": 0.44709823302924634,
-      "path_in_repo": "act_calvin_ABC_best/pretrained_model",
+      "path_in_repo": "topic2/act_calvin_ABC_best/pretrained_model",
       "files": [
         "config.json",
         "model.safetensors",
@@ -41,4 +41,4 @@
     "Both folders contain LeRobot pretrained_model artifacts.",
     "Environment D has no reliable success signal in the converted offline data; Action L1 is reported instead."
   ]
-}
+}