[nik13]

Summary

• Add installable traceAI-openrouter for the dedicated Speakeasy Python SDK (not an OpenAI subclass). Covers synchronous and asynchronous Chat, Embeddings, Responses and deprecated beta.responses, including streaming usage and error status.
• Attribute the official OpenAI-compatible openrouter.ai host to OpenRouter while leaving look-alike hosts as OpenAI.
• Register release automation and loopback-only CI at the declared floor (SDK 1.3.0 / Python 3.10) and current release (SDK 1.3.107 / Python 3.13).

Verification

• On current dev, provider_from_host("openrouter.ai") returned openai; after change, host contract tests cover the genuine host and look-alikes.
• Synthetic HTTPX transports: 68 tests passed against Python 3.13 + SDK 1.3.107, including existing OpenAI provider contracts; 11 package tests passed on a clean wheel install with Python 3.10 + SDK 1.3.0.
• Release plan check and wheel/sdist builds pass. No vendor credentials or external API calls.

Release and documentation

• New Python package cannot publish until the PyPI new-project limit clears. Customer-facing page is staged locally and is not submitted to docs while this package is unpublished. Existing OpenAI-client and Broadcast docs remain available; using multiple routes for the same call duplicates observations.
• Streaming spans finish when consumed or explicitly closed; early close is marked incomplete and does not claim a complete answer. Prompt text defaults to on per TraceConfig, with hide flags. No embedding vectors or error bodies are captured.

E2E coverage

Not applicable: no product application routes, migrations, or frontend behavior changed. Package-level real SDK fake-transport contracts are in this PR.

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