Fix Datasets auto-split: move id lists under meta/splits and pin parquet configs.

README.md

@@ -11,6 +11,13 @@ tags:
   - wgo-bench
 size_categories:
   - n<1K
+configs:
+  - config_name: default
+    data_files:
+      - split: train
+        path: data/train.parquet
+      - split: test
+        path: data/test.parquet
 ---
 
 # WGO-Bench — Localization Given Labels
@@ -26,7 +33,7 @@ Derived from [Macrodata Labs' WGO-Bench](https://huggingface.co/datasets/macroda
 | `train` | `dev_80` | 80 | 623 |
 | `test` | `heldout_20` | 20 | 120 |
 
-Construction seed is frozen at **0**. Shuffled `label_specs` and `prompt_text` are materialized per row so order is byte-stable without re-running the RNG. Split id lists are also under `splits/`.
+Construction seed is frozen at **0**. Shuffled `label_specs` and `prompt_text` are materialized per row so order is byte-stable without re-running the RNG. Split id lists are also under `meta/splits/`.
 
 **Challenge leakage rule:** train localization models only on `train`. Score free-mode segmentation F1@0.75 on the untouched `test` episodes (or an external set). Do not train on `test`.