Add placeholder docstring column for schema consistency

- Added empty string docstring column as placeholder
- Ensures compatibility when training across all prover datasets
- Real docstrings to be extracted and added in future update
- Prevents training errors from schema mismatch

README.md

@@ -1,18 +1,45 @@
 ---
 license: bsd-3-clause
 tags:
-  - theorem-proving
-  - formal-methods
-  - acl2
-  - lisp
-  - hardware-verification
+- theorem-proving
+- formal-methods
+- acl2
+- lisp
+- hardware-verification
 task_categories:
-  - text-generation
-  - feature-extraction
+- text-generation
+- feature-extraction
 language:
-  - en
+- en
 size_categories:
-  - 100K<n<1M
+- 100K<n<1M
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
+dataset_info:
+  features:
+  - name: fact
+    dtype: string
+  - name: type
+    dtype: string
+  - name: library
+    dtype: string
+  - name: imports
+    list: string
+  - name: filename
+    dtype: string
+  - name: symbolic_name
+    dtype: string
+  - name: docstring
+    dtype: string
+  splits:
+  - name: train
+    num_bytes: 110107672
+    num_examples: 231000
+  download_size: 17676308
+  dataset_size: 110107672
 ---
 
 # ACL2

data/train-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:24441b97925e1d3bc976de5aa8c582d20b0dbf477f30d5bc3bb30b9e56d6fd1e
-size 17697774
+oid sha256:5924bdba5d22b08fd9e81ba5ecbb88344bcb4959b869eb1b3490badfc3d2aba5
+size 17676308