Sanitize train_config.json: drop internal cluster paths, point tokenizer at upstream hub id

train_config.json

@@ -1,7 +1,7 @@
 {
     "dataset": {
         "repo_id": "lerobot/robotwin_unified",
-        "root": "/lustre/fsw/portfolios/nvr/projects/nvr_elm_llm/users/zekail/data/robotwin_unified",
+        "root": null,
         "episodes": null,
         "image_transforms": {
             "enable": false,
@@ -131,7 +131,7 @@
         "private": null,
         "tags": null,
         "license": null,
-        "pretrained_path": "/lustre/fsw/portfolios/nvr/projects/nvr_elm_llm/users/zekail/models/flashvla_action_unified_clean_random_fsdp_bf16_bs32_100k/checkpoints/last/pretrained_model",
+        "pretrained_path": null,
         "attention_backend": "sdpa",
         "paligemma_variant": "gemma_2b",
         "action_expert_variant": "gemma_300m",
@@ -154,7 +154,7 @@
         ],
         "empty_cameras": 0,
         "num_frames_per_view": 1,
-        "tokenizer_name": "/lustre/fsw/portfolios/nvr/projects/nvr_elm_llm/users/zekail/models/google/paligemma-3b-pt-224",
+        "tokenizer_name": "google/paligemma-3b-pt-224",
         "tokenizer_max_length": 200,
         "normalization_mapping": {
             "VISUAL": "IDENTITY",
@@ -186,7 +186,7 @@
         "time_mlp_weight_decay": 0.0,
         "cold_start_mode": "current_state"
     },
-    "output_dir": "/lustre/fsw/portfolios/nvr/projects/nvr_elm_llm/users/zekail/models/flashvla_action_unified_clean_random_fsdp_bf16_bs32_100k",
+    "output_dir": null,
     "job_name": "flashvla-fsdp-bf16-bs32-clean-random-100k-20260628-134055",
     "resume": true,
     "seed": 1000,
@@ -240,7 +240,7 @@
     "rabc_epsilon": 1e-06,
     "rabc_head_mode": "sparse",
     "rename_map": {},
-    "checkpoint_path": "/lustre/fsw/portfolios/nvr/projects/nvr_elm_llm/users/zekail/models/flashvla_action_unified_clean_random_fsdp_bf16_bs32_100k/checkpoints/last",
+    "checkpoint_path": null,
     "grad_accum_steps": 1,
     "max_saved_checkpoints": 5,
     "fsdp": {