The hook was incorrectly setting output.message.model.modelID to non-existent
variants like gpt-5-nano-high, causing ProviderModelNotFoundError.
OpenCode's native variant system only needs the variant field - it handles
the transformation automatically.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Drop provider-specific thinking config injection (THINKING_CONFIGS, getThinkingConfig,
resolveProvider) and instead rely on the provider to handle thinking based on the variant field.
Hook now fires on chat.message using model from input rather than from the message object.
🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
Z.ai GLM models don't support thinking/reasoning parameters.
Ensure these are omitted entirely to prevent empty responses.
Fixes#980
Community-reported-by: @iserifith
acamq