[FEATURE] Code tab in Claude desktop app should support independent Bedrock authentication (like VS Code extension)

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

The Claude desktop app's Code tab does not support Amazon Bedrock authentication.
Even when ~/.claude/settings.json correctly sets CLAUDE_CODE_USE_BEDROCK=1,
the Code tab is overridden by the OAuth token cached in
%APPDATA%\Roaming\Claude\config.json, causing all Code tab requests to target
https://api.anthropic.com instead of Bedrock.

Environment

• Desktop app: v1.1.5368.0 (MSIX)
• Code tab binary: %APPDATA%\Roaming\Claude\claude-code\2.1.63\claude.exe
• Platform: Windows 11 Enterprise
• Auth target: Amazon Bedrock (us-west-2, profile: ai-bedrock)

Current Behavior

The Code tab reads ~/.claude/settings.json for model and env settings, but
also reads config.json for the OAuth token cache. When an OAuth token is
present, it takes precedence over CLAUDE_CODE_USE_BEDROCK=1, and the Code tab
sends:

• Auth: Bearer <oauth_token> -> https://api.anthropic.com
• Model: claude-sonnet-4-6 (short-form, invalid for Bedrock)

This results in:

API Error (claude-sonnet-4-6): 400 The provided model identifier is invalid.

Expected Behavior

The Code tab should support a Bedrock authentication path equivalent to what the
VS Code extension provides via claudeCode.environmentVariables in VS Code's
settings.json. Specifically:

• When CLAUDE_CODE_USE_BEDROCK=1 is set (in ~/.claude/settings.json env block

or equivalent), the Code tab should bypass the OAuth token and use Bedrock
credentials (AWS profile/region).

• The Code tab binary should respect the same env configuration that governs the

CLI -- the OAuth token should not silently override it.

Workaround (Current)

The only current workaround is to manually remove the oauth:tokenCache key from
%APPDATA%\Roaming\Claude\config.json. This forces the Code tab to fall back to
Bedrock but causes the Chat tab to lose its session and prompt for re-login.

This is not a sustainable solution for enterprise environments where Bedrock is the
required authentication method.

Requested Feature

1. Honor CLAUDE_CODE_USE_BEDROCK=1 in the Code tab regardless of OAuth token

presence in config.json.

1. OR: Add a codeTab.environmentVariables config in claude_desktop_config.json

(analogous to VS Code's claudeCode.environmentVariables) so enterprise users
can configure Bedrock independently for the Code tab without affecting the Chat tab.

Impact

Affects enterprise/corporate users required to use Amazon Bedrock -- cannot use
the Code tab at all if an OAuth token exists from a prior personal login.

Proposed Solution

Honor CLAUDE_CODE_USE_BEDROCK=1 in the Code tab regardless of OAuth token
presence in config.json.
OR: Add a codeTab.environmentVariables config in claude_desktop_config.json
(analogous to VS Code's claudeCode.environmentVariables) so enterprise users
can configure Bedrock independently for the Code tab without affecting the Chat tab.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

Configuration and settings

Use Case Example

_No response_

Additional Context

_No response_