Clarify compatibility mirror duration

README.md

@@ -14,7 +14,7 @@ tags:
 
 > This is a noncanonical compatibility mirror. Use [`FormosanBank/ILRDF_Dicts`](https://huggingface.co/datasets/FormosanBank/ILRDF_Dicts) for the complete canonical dataset and stable download contract.
 
-This mirror contains 9,995 public Rukai audio files (approximately 14.69 hours). Its public source baseline is [`FormosanBank/FormosanBank@98df3773bf26ae2ef5373cd97e0841762126e61d`](https://github.com/FormosanBank/FormosanBank/tree/98df3773bf26ae2ef5373cd97e0841762126e61d/Corpora/ILRDF_Dicts/XML/Rukai).
+This mirror contains 9,995 public Rukai audio files. The current XML-referenced canonical Rukai partition reports approximately 14.69 hours; this mirror can include files outside the canonical contract. Its public source baseline is [`FormosanBank/FormosanBank@98df3773bf26ae2ef5373cd97e0841762126e61d`](https://github.com/FormosanBank/FormosanBank/tree/98df3773bf26ae2ef5373cd97e0841762126e61d/Corpora/ILRDF_Dicts/XML/Rukai).
 
 ## License and AI Use