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## 4.96.0

**`(feat):`** Add optional `baseProperties` field to `UndiscriminatedUnionTypeDeclaration` in the IR schema.
Both the V3 importer and the legacy OpenAPI importer now extract sibling properties from
`oneOf`/`anyOf` schemas and populate `baseProperties` on undiscriminated unions.

## 4.95.0

**`(feat):`** Add `placeholder` field to auth scheme configuration (basic, bearer, header) for controlling
example values in dynamic code snippets. The fallback chain is: explicit placeholder > generic placeholder.
Configurable via Fern definition YAML and OpenAPI extensions (x-fern-basic, x-fern-bearer, x-fern-header).