[FEATURE] Allow to pick authentication method when using Claude Code and Azure Foundry

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Currently when using Claude Code with Azure Foundry and RBAC role based access Claude Code seems to strictly follow DefaultAzureCredential priority chain. This is problematic when running in environments with multiple identities for example Azure VM with user az login, system assigned identity on the VM and User Assigned Identity.

Proposed Solution

Either prioritize session that was authenticated in the shell where claude code is running or add option to pick which identity to use for authentication.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

1. When using Claude Code with Azure Foundry, use identity that was authenticated using az login instead of defaulting to managed identity present on the system.

Additional Context

_No response_