[Dhruv Shaswat (Dhruv-Sh-git)]

Fixes #8828

Summary

When AGUIEventConverter converted a RUN_ERROR event, it hard-coded error_code="RUN_ERROR", discarding any specific error code emitted by the server, such as APPROVAL_INVOCATION_DISABLED, APPROVAL_RESUME_INVALID, or TimeoutError.
This PR preserves the event's code field when present and falls back to "RUN_ERROR" when it is missing. This allows AGUIChatClient callers to inspect and handle specific error types.

Changes

• packages/ag-ui/agent_framework_ag_ui/_event_converters.py: Preserve the event's code field, falling back to "RUN_ERROR" when absent.
• packages/ag-ui/tests/ag_ui/test_event_converters.py: Add a regression test verifying that specific error codes are preserved.
• packages/ag-ui/tests/ag_ui/test_ag_ui_client.py: Add a streaming regression test verifying that the preserved error code is propagated in client updates.

Validation

• Ruff checks passed.
• All 1,695 tests passed in packages/ag-ui.

[Copilot]

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[Eduard van Valkenburg (eavanvalkenburg)]

/review

[github-actions]

MAF Automated Review — Iteration 1

Result: No findings
Scope: full PR (1 commit(s)): e3420f5b623f
Model: gpt-5.6-sol

Overview

The change preserves meaningful server-provided RUN_ERROR.code values while retaining the existing "RUN_ERROR" fallback for events without a usable code. Direct converter and streaming client tests cover both the fallback and specific-code propagation, and the existing partial-tool invalidation path still intercepts terminal errors before conversion. No publishable Critical, High, or Medium issue was established.

Reviewed the supplied pull-request change set across correctness, security/reliability, architecture, and failure behavior.
No publishable findings remained after source verification for this scope.

[agent-framework-automation]

Dhruv Shaswat (@Dhruv-Sh-git), this pull request is waiting on your response. If there is no further activity within 4 days, it will be closed automatically. (This is an automated message.)