feat(alibaba-token-plan): add Qwen3.8 Max

[BaronCyrus]

Summary

• add provider-agnostic metadata for the production qwen3.8-max model
• add qwen3.8-max to the international and China Alibaba Token Plan catalogs
• retain qwen3.8-max-preview because it remains separately listed and is still referenced by another provider

Why

The catalog only contained qwen3.8-max-preview, while QwenCloud and the Qianwen AI Platform now list the production model ID qwen3.8-max. Without a separate production entry, clients cannot discover or resolve the official model ID.

Alibaba Token Plan is a first-party Alibaba API surface. The production entries keep the native controls already verified for the promoted model family: reasoning_effort with low, medium, and xhigh, plus the mutually exclusive thinking_budget range from 0 to 262144 tokens. Reasoning is returned through reasoning_content.

Sources

• https://docs.qwencloud.com/token-plan/personal/token-plan-personal-overview
• https://platform.qianwenai.com/docs/token-plan/personal/token-plan-personal-overview
• https://docs.qwencloud.com/developer-guides/getting-started/text-generation-models
• https://platform.qianwenai.com/docs/developer-guides/getting-started/text-generation-models
• https://docs.qwencloud.com/api-reference/chat/openai-chat
• https://platform.qianwenai.com/docs/api-reference/chat/openai-chat

Validation

• bun validate
• cd packages/web && bun run build

[github-actions]

No actionable findings.

[MstKenway]

Please also add a new config file for deepseek-v4-flash-0731, which is different from deepseek-v4-flash. Thanks!

[aic0d3r]

Independent verification on the international Alibaba Token Plan endpoint (https://token-plan.ap-southeast-1.maas.aliyuncs.com/compatible-mode/v1): qwen3.8-max completed a live OpenCode request successfully using a Token Plan credential. The current models.dev snapshot did not expose this ID until added as a local override. Alibaba's current OpenCode guide also lists qwen3.8-max for both Personal and Team Token Plans: https://www.alibabacloud.com/help/en/model-studio/opencode