Add generated Python SDK

[rgarcia]

Summary

• add a Python target backed by the new production and staging SDK repositories
• install the pinned Python generator and Rye toolchain in SDK generation CI
• include Python in preview, validation, promotion, and cleanup flows
• update the SDK generation runbook for three targets

Testing

• git diff --check
• parsed all changed YAML files with yq
• full generation, lint, and SDK tests run in the PR workflow

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Note

Medium Risk
Expands the release pipeline to a third package (PyPI) and new CI dependencies; changes follow the existing Go/TS pattern but increase blast radius if generation or publish misconfigures.

Overview
Adds a Python SDK target to the existing stlc generation flow so Hypeman ships Go, Python, and TypeScript from the same OpenAPI/Stainless config.

stainless.yaml defines the Python target (hypeman on PyPI) with kernel/hypeman-python and kernel/hypeman-python-staging. CI now installs a pinned stlc-python generator and Rye (for the Python SDK’s scripts/bootstrap / rye sync), and stlc-generate.yml includes Python in SDK_TARGETS, preview/integration pushes, app-token repo access, and preview-branch cleanup. The SDK generation runbook is updated for three staging repos and a full cutover checklist.

^{Reviewed by Cursor Bugbot for commit 0633f89. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

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✱ stlc build

✅ go code · compare

Your SDK build was successful.

generate ✅ → bootstrap ✅ → format ✅

114 files generated at bd76109 (pushed)

go get github.com/kernel/hypeman-go-staging@bd761097dca96dfe680af872a0202187dc2dffe3

✅ python code · compare

Your SDK build was successful.

generate ✅ → bootstrap ✅ → format ✅

221 files generated at 1924445 (pushed)

✅ typescript code · compare

Your SDK build was successful.

generate ✅ → bootstrap ✅ → format ✅

136 files generated at f142aa7 (pushed)

Diagnostics: ❗ 0 new / 1 total error, ⚠️ 0 new / 1 total warning, 💡 0 new / 5 total note

Level	Code	Message	Targets

Build metadata

Build	bd_768vGG89-pure-spade
Timestamp	2026-08-16T21:13:12.357Z
stlc	8413509
Spec hash	ff143be503cd
Config hash	6c5ca8dbb79e

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Last updated: 2026-08-16 21:13:35 UTC