Add placeholder docstring column for schema consistency

- Added empty string docstring column as placeholder
- Ensures compatibility when training across all Coq/Lean4 datasets
- Real docstrings to be extracted and added in future update
- Prevents training errors from schema mismatch

README.md

@@ -1,19 +1,46 @@
 ---
 license: bsd-3-clause
 task_categories:
-  - text-generation
-  - feature-extraction
+- text-generation
+- feature-extraction
 language:
-  - en
+- en
 tags:
-  - theorem-proving
-  - formal-methods
-  - coq
-  - separation-logic
-  - iris
-  - concurrent-programming
+- theorem-proving
+- formal-methods
+- coq
+- separation-logic
+- iris
+- concurrent-programming
 size_categories:
-  - 10K<n<100K
+- 10K<n<100K
+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: 6186201
+    num_examples: 10229
+  download_size: 777517
+  dataset_size: 6186201
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
 ---
 
 # Coq-Iris

data/train-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:67903e0d5fd3ad7afb7734fab74b2dec62b60d0d77204c3fd2db0e140f7f2137
-size 777124
+oid sha256:578a937d811c08bb2479307025aca74776ad0e4beb3be27d857001bd12f9f8a3
+size 777517