8cf6b3da9d
The opencode-go relay defaults max_tokens to 262144 when none is sent, but Xiami mimo-v2.5-pro only supports 131072 completion tokens — every request 400s with "max_tokens is too large: 262144" before the agent can do anything. Add a get_max_tokens(model) hook on ProviderProfile (default returns default_max_tokens) so profiles fronting multiple upstreams can vary the cap per-model. Wire chat_completions transport through the hook. Override on OpenCodeGoProfile with mimo-v2.5-pro=131072. Only mimo-v2.5-pro is capped — other opencode-go models (kimi, glm, qwen, minimax, other mimo variants) unchanged.