fix: add openai-codex to providers that don't require API key

[roomote]

Fixes bug where users with ChatGPT Pro subscription were getting stuck on the "Choose your provider" screen.

Changes

• Added openai-codex to the list of providers that don't require API key configuration in checkExistKey()
• Added comprehensive test coverage for all OAuth-based providers (fake-ai, claude-code, openai-codex, qwen-code, roo)

Context

The openai-codex provider uses OAuth authentication (similar to claude-code), so it doesn't require users to manually provide an API key. Without this fix, the extension would incorrectly require API key configuration, preventing users from progressing past the provider selection screen.

Testing

• All existing tests pass
• Added 5 new test cases to verify behavior for all OAuth providers

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View task on Roo Code Cloud

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Important

Adds openai-codex to providers not requiring API key in checkExistKey() and updates tests for OAuth providers.

• Behavior:
  • Adds openai-codex to providers that don't require API key in checkExistKey() in checkExistApiConfig.ts.
  • Fixes bug preventing users with ChatGPT Pro from progressing past provider selection.
• Testing:
  • Adds test cases for openai-codex and other OAuth providers in checkExistApiConfig.spec.ts.
  • Verifies behavior for fake-ai, claude-code, qwen-code, and roo providers.

^{This description was created by for a30c8df. You can customize this summary. It will automatically update as commits are pushed.}

[roomote]

Rooviewer   See task on Roo Cloud

Review complete. No issues found.

The fix correctly adds openai-codex to OAuth-based providers that don't require API key configuration. The implementation is consistent with existing patterns for similar providers like claude-code.

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}

[roomote]

Rooviewer   See task on Roo Cloud

Review complete. No issues found.

The fix correctly adds openai-codex to the list of OAuth-based providers that don't require API key configuration. The change is consistent with existing patterns for similar providers like claude-code, and the provider's OAuth authentication is properly implemented in src/integrations/openai-codex/oauth.ts. Test coverage has been added for all OAuth providers.

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}