feat(FN-3905): use merger session model for post-merge workflow steps

The merge implements post-merge model resolution, using the merger's own session model for executing post-merge prompt workflow steps instead of falling back to executor model defaults. Tests cover the resolution hierarchy, and documentation clarifies the precedence order for downstream consumers.

Fusion-Task-Id: FN-3905
This commit is contained in:
Fusion
2026-05-11 09:19:57 -07:00
committed by gsxdsm
parent 758073c799
commit 3c2f1bdff0
13 changed files with 379 additions and 46 deletions

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"@runfusion/fusion": patch
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Post-merge prompt workflow-step agent sessions now honor the assigned agent runtime model (`runtimeConfig.model`) when the workflow step does not provide its own model override, matching the rest of the merger session model resolution path.