feat(FN-3892): honor assigned runtime model for merger sessions

- Add resolveMergerSessionModel helper to centralize merger model selection precedence
- Route merger session creation paths through the helper for commit, push/rebase, and autostash recovery flows
- Add comprehensive engine tests for merger model resolution and fallback behavior
- Document merger model hierarchy in settings reference and add a patch changeset for @runfusion/fusion

Fusion-Task-Id: FN-3892
This commit is contained in:
Fusion
2026-05-09 21:41:18 -07:00
committed by gsxdsm
parent 392713f851
commit 4051dabe4d
5 changed files with 142 additions and 35 deletions

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"@runfusion/fusion": patch
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Merger sessions now honor the assigned agent's `runtimeConfig.model` before falling back to project/global defaults, matching executor and planning lanes.