docs(changelog): typing spans read and write paths

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
 
-- Column names are typed as `ColumnName` throughout the read path, not raw `String`. `DType.Struct.fieldNames()` returns `List<ColumnName>` (the builder already validated then discarded the type — now it keeps it), `VortexReader.columnStats()` is keyed by `ColumnName`, `RowFilter.Column.column` is a `ColumnName`, and the writer's internal column maps follow. User-facing sugar is unchanged — `structBuilder().field(String)`, `RowFilter.eq(String, …)`, `ScanOptions.columns(String...)`, and `writeChunk(Map<String,Object>)` still take strings and validate at the edge. A footgun field name (blank/control) is now rejected structurally at `ColumnName` construction — a footgun-named schema can no longer be built. Framework/IO boundaries (Calcite, CSV, JDBC, Parquet, display) keep `String`. Wire output unchanged (integration oracle green). ([84769863](https://github.com/dfa1/vortex-java/commit/84769863))
+- Column names are typed as `ColumnName` throughout vortex's own read and write APIs, not raw `String`. `DType.Struct.fieldNames()` returns `List<ColumnName>` (the builder already validated then discarded the type — now it keeps it), `VortexReader.columnStats()` is keyed by `ColumnName`, `RowFilter.Column.column` is a `ColumnName`, and the writer's internal column maps and typed `Chunk.put(ColumnName, …)` builder follow. User-facing sugar is unchanged — `structBuilder().field(String)`, `RowFilter.eq(String, …)`, `ScanOptions.columns(String...)`, and `writeChunk(Map<String,Object>)` still take strings and validate at the edge. A footgun field name (blank/control) is now rejected structurally at `ColumnName` construction — a footgun-named schema can no longer be built. Framework/IO boundaries (Calcite, CSV, JDBC, Parquet, display) keep `String`. Wire output unchanged (integration oracle green). ([84769863](https://github.com/dfa1/vortex-java/commit/84769863))
 
 - `ScanOptions.columns()` returns `List<ColumnName>` instead of `List<String>`. The `columns(String...)` / `withColumns(String...)` factories still take strings at the API boundary but validate them into `ColumnName`, so a blank or control-character projection name fails fast rather than silently matching nothing. ([e478a3a7](https://github.com/dfa1/vortex-java/commit/e478a3a7))