docs: credit @CODING-DARSH for vision/audio vocab expansion (#291)

CHANGELOG.md

@@ -12,6 +12,13 @@ reproducing 70+ versions of notes.
 
 ## [Unreleased]
 
+### Fixed
+- Vision and audio SFT paths now apply configured vocabulary expansion
+  (`data.add_new_tokens` / `data.new_special_tokens`) via the shared
+  `apply_vocab_expansion()` helper, consistent with the text SFT path — they
+  previously ignored it. Closes #290
+  ([#291](https://github.com/MakazhanAlpamys/Soup/pull/291) by [@CODING-DARSH](https://github.com/CODING-DARSH)).
+
 ## [0.71.27] - 2026-07-03
 
 ### Added

CONTRIBUTORS.md

@@ -47,6 +47,7 @@ Listed by first contribution. PR numbers link the work.
 - **Darsh** ([@CODING-DARSH](https://github.com/CODING-DARSH))
   - Harden judge-URL validation against hostname prefix bypass (`startswith` → `urlparse`) in `eval/gate.py` ([#288](https://github.com/MakazhanAlpamys/Soup/pull/288))
   - Apply configured vocabulary expansion (`data.add_new_tokens` / `new_special_tokens`) during SFT trainer init ([#287](https://github.com/MakazhanAlpamys/Soup/pull/287))
+  - Reuse the shared vocab-expansion helper in the vision + audio SFT paths ([#291](https://github.com/MakazhanAlpamys/Soup/pull/291))
 
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