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Charles YaoandClaude Opus 4.8
2a574c7f74
Build wrote the Builder's session/cognition model (e.g. deepseek) into every
generated node's model block, ignoring the model the user picked at resource
confirmation (e.g. gpt). _ground always used the generation model, and the
selected model resource only reached the plan as label text (bind_resources) —
so a workflow got a model with no runtime credentials -> ModelNotExistError ->
instant test failure.
Thread the selected resource_ids from resource_selection through
agent.build_nodes into build.build_nodes, resolve the selected MODEL resource
(id is `{provider}/{name}`) via _selected_workflow_model, and ground node model
blocks to it — falling back to the session/generator model when the user
selected no model. The generator still runs on the session model (cognition);
only the built workflow's runtime model follows the user's choice.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>