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: mit
 tags:
-  - theorem-proving
-  - formal-methods
-  - dafny
-  - verification
-  - imperative-programming
+- theorem-proving
+- formal-methods
+- dafny
+- verification
+- imperative-programming
 task_categories:
-  - text-generation
-  - feature-extraction
+- text-generation
+- feature-extraction
 language:
-  - en
+- en
 size_categories:
-  - 1K<n<10K
+- 1K<n<10K
+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: 1829470
+    num_examples: 9572
+  download_size: 256624
+  dataset_size: 1829470
 ---
 
 # Dafny

data/train-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:fde68124bf71cebbbd221662e1fcaefe8ecd73834298b2fcfbf9f89d96617f29
-size 256231
+oid sha256:94f095615509da5b3291b9003a3527dc007bc5158e924fdb7de42e12a45a8320
+size 256624