release: 3.6.0 (#308)

* chore: sync repo

* feat: Add executionModel serialization to api client

* feat(client): add custom JSON encoder for extended type support

* Update example link text

* chore(internal): codegen related update

* Add remote Browserbase Playwright SSE example.

* Add local browser SSE example

* chore(internal): codegen related update

* chore(internal): bump dependencies

* chore(internal): fix lint error on Python 3.14

* codegen metadata

* STG-1308: update examples to use SSE and examples env

* chore: format all `api.md` files

* STG-1308: fix ruff import ordering

* STG-1306: update model names and README examples

* STG-1306: use opus for agent examples

* feat: randomize region used for evals, split out pnpm and turbo cache, veri…

* codegen metadata

* chore(internal): remove mock server code

* chore: update mock server docs

* chore(internal): add request options to SSE classes

* chore(internal):  make `test_proxy_environment_variables` more resilient

* codegen metadata

* chore(internal): make `test_proxy_environment_variables` more resilient to env

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

* codegen metadata

* codegen metadata

* release: 3.6.0

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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>