Add Xiaomi MiMo V2.5 (subscription) parameters

[guillaumegay13]

What this changes

Adds configurable request parameters for Xiaomi MiMo V2.5 on the subscription route (e.g. the OpenCode Go subscription), filed as #47.

Exposes the user-facing toggles: max_completion_tokens, thinking.type (default enabled), temperature, top_p, and response_format.type. As on the API-key entry, temperature/top_p carry the except: { thinking.type: enabled } rule (forced to 1.0/0.95 while thinking is on).

Type of change

• Add a model (new YAML file under models/)

Source

• Deep thinking: https://mimo.mi.com/docs/en-US/quick-start/usage-guide/text-generation/deep-thinking
• OpenCode Go: https://opencode.ai/docs/go/

Params follow MiMo provenance (the subscription is a transport over the same model). Smoke-tested live through a local Manifest server against the underlying Xiaomi MiMo V2.5 (via OpenRouter): all accepted (200).

Closes #47

[vercel]

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[guillaumegay13]

Superseded by #80, which bundles the remaining model-param requests into a single PR so the merge cuts one modelparams release instead of four. Same files, same live smoke tests.