release: 3.21.0 (#33)

* codegen metadata

* codegen metadata

* feat: [feat]: add `ignoreSelectors` to `observe()`

* ci: pin GitHub Actions to commit SHAs

Pin all GitHub Actions referenced in generated workflows (both
first-party `actions/*` and third-party) to immutable commit SHAs.
Updating pinned actions is now a deliberate codegen-side bump rather
than implicit on every workflow run.

* fix(client): elide content type header on requests without body

* feat: STG-1756 add Vertex auth params to Stagehand spec

* feat: Add `screenshot` option to Extract

* feat: [STG-1756] forward Vertex model config

* release: 3.21.0

---------

Co-authored-by: stainless-app[bot] <142633134+stainless-app[bot]@users.noreply.github.com>

release: 3.20.0

release: 3.19.3

release: 3.18.0

release: 3.7.1

release: 3.7.0

release: 3.6.1 (#27)

* codegen metadata

* chore(internal): remove mock server code

* chore: update mock server docs

* codegen metadata

* STG-1301: add CLAUDE.md and AGENTS.md

* codegen metadata

* release: 3.6.1

---------

Co-authored-by: stainless-app[bot] <142633134+stainless-app[bot]@users.noreply.github.com>
Co-authored-by: monadoid <sam.finton@gmail.com>
Co-authored-by: Sam F <43347795+monadoid@users.noreply.github.com>

release: 3.6.0

release: 3.5.2

release: 3.5.1