docs(changelog): zstd guard commit reference

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: dfa1

CHANGELOG.md

@@ -31,7 +31,7 @@ claim measured against the Rust (JNI) oracle; behavior divergences documented in
 
 ### Changed
 
-- The zstd binding stays a two-artifact opt-in (`io.github.dfa1.zstd:zstd` + `zstd-platform`, both `optional`; no JNI anywhere), and touching `vortex.zstd` without it now fails with an actionable `VortexException` naming the two artifacts to add, instead of a raw `NoClassDefFoundError`. Default write/read paths never touch the binding (measured). ([pending-zstd](https://github.com/dfa1/vortex-java/commits/main))
+- The zstd binding stays a two-artifact opt-in (`io.github.dfa1.zstd:zstd` + `zstd-platform`, both `optional`; no JNI anywhere), and touching `vortex.zstd` without it now fails with an actionable `VortexException` naming the two artifacts to add, instead of a raw `NoClassDefFoundError`. Default write/read paths never touch the binding (measured). ([ae9f95cc](https://github.com/dfa1/vortex-java/commit/ae9f95cc))
 - The little-endian `ValueLayout` constants moved from `PTypeIO.LE_*` to `VortexFormat.LE_*` — endianness is a property of the wire format, not of ptypes, and `VortexFormat` is where format facts live. Six classes that carried private copies (including reversed-name duplicates like `SHORT_LE`) now share the single source; nothing outside `VortexFormat` defines a `withOrder(LITTLE_ENDIAN)` layout. ([c060d34f](https://github.com/dfa1/vortex-java/commit/c060d34f))
 - `Chunk.columns()` returns an order-preserving `SequencedMap<ColumnName, Chunk.Column>` — one map instead of two parallel string-keyed maps, with each column's `Array` and `DType` traveling together in the `Column` carrier. `column(String)` stays as boundary sugar (plus a `column(ColumnName)` overload); iteration order is the schema/projection order, now guaranteed even for 1–2 column chunks. Typed names originate in `ScanIterator` from the file's already-certified schema. ([f8ad15d1](https://github.com/dfa1/vortex-java/commit/f8ad15d1))