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FN-5832: surface unsupported message-role provider errors

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Make unsupported provider message-role failures fail fast with actionable operator guidance.

- detect provider errors that reject `messages.[n].role` values via a dedicated transient-error detector helper
- classify unsupported message-role failures as operator-actionable/permanent to prevent retry loops
- annotate `promptSessionAndCheck` failures with model/provider compatibility guidance for imported company-role agents
- add regression tests for role-error detection, operator-actionable classification, and prompt-boundary error hinting
- add a patch changeset for `@runfusion/fusion`

Files changed:
 .changeset/fn-5832-unsupported-message-role.md     |  5 +++
 .../pi-prompt-session-and-check-recursion.test.ts  | 24 +++++++++++++++
 .../src/__tests__/transient-error-detector.test.ts | 36 ++++++++++++++++++++++
 packages/engine/src/pi.ts                          |  8 +++++
 packages/engine/src/transient-error-detector.ts    | 14 ++++++++-
 5 files changed, 86 insertions(+), 1 deletion(-)

Fusion-Task-Id: FN-5832

Fusion-Task-Lineage: b3f78f0e-d097-4cb7-a652-dc547f46fe1d
This commit is contained in:
gsxdsm
2026-06-01 07:53:56 -07:00
parent 1d3978e20a
commit e16893a3c7
5 changed files with 86 additions and 1 deletions
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5
.changeset/fn-5832-unsupported-message-role.md Normal file
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"@runfusion/fusion": patch
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Classify provider 400 errors for unsupported `messages.[n].role` values as operator-actionable agent errors, and annotate prompt-boundary failures with a clear model/provider compatibility hint. This stops invisible retry loops and makes misconfigured imported agent model/provider combinations fail fast with actionable diagnostics.