Fix HF viewer: non-empty chat_template_kwargs; add YAML metadata

README.md

@@ -1,7 +1,21 @@
+---
+license: mit
+language:
+- en
+tags:
+- sft
+- chat
+- synthetic
+- reverse-text
+- keep-numbers
+task_categories:
+- text-generation
+---
+
 # Reverse Keep Numbers
 
-This dataset contains synthetic chat-style examples where the assistant reverses non-digit characters while keeping digits in-place and unchanged.
+Synthetic chat-style SFT dataset where the assistant reverses non-digit characters while keeping digits in-place and unchanged.
 
 - Input format: OpenAI-style chat messages in `prompt` and `completion`.
-- Tokenization-agnostic: examples are whitespace-delimited tokens; each token is reversed independently (digits fixed).
+- Per-token reversal: whitespace-delimited tokens; each token reversed independently (digits fixed).
 - Splits: `train` (3000 rows), `validation` (300 rows).