fusion

Files

gsxdsm f76716e55b FN-5833: fix custom Responses API model lookup

Ensure custom OpenAI Responses providers resolve configured models without requiring registry entries.

- update global settings model resolution to preserve custom provider model configuration
- adjust engine custom-provider and fn-agent creation paths to avoid false 'model not found' failures
- add regression tests for OpenAI Responses custom providers and pi create-fn-agent flows
- document the custom provider model behavior and add a changeset for @runfusion/fusion

Files changed:
 .../FN-5833-custom-provider-responses-fix.md       | 10 ++++
 docs/settings-reference.md                         |  2 +-
 packages/core/src/global-settings.ts               | 56 +++++++++----------
 packages/core/src/index.ts                         |  2 +-
 .../custom-providers-openai-responses.test.ts      | 64 ++++++++++++++++++++++
 .../engine/src/__tests__/custom-providers.test.ts  | 33 ++++++++++-
 .../src/__tests__/pi-create-fn-agent.test.ts       | 11 +++-
 packages/engine/src/custom-providers.ts            |  4 +-
 packages/engine/src/pi.ts                          | 21 +++++--
 9 files changed, 162 insertions(+), 41 deletions(-)

Fusion-Task-Id: FN-5833

Fusion-Task-Lineage: a59481cf-faf5-42b8-97ce-7b3eca27b4fb

2026-06-01 08:23:02 -07:00