feat: Add IAM OAuth scope to appsscript.json

[PierrickVoulet]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @PierrickVoulet, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new OAuth scope to the application's configuration, enabling it to interact with Google Cloud Identity and Access Management (IAM) services. This change is crucial for functionalities that require managing permissions or accessing IAM-protected resources within the Google Cloud ecosystem.

Highlights

• OAuth Scope Addition: The https://www.googleapis.com/auth/iam OAuth scope has been added to the appsscript.json configuration file.

Changelog

• apps-script/chat/a2ui-ai-agent/appsscript.json
  • Added the https://www.googleapis.com/auth/iam OAuth scope to the list of required permissions.

Activity

• The pull request was created by PierrickVoulet.
• No human activity (comments, reviews) has been recorded yet.

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[gemini-code-assist]

Code Review

This pull request adds the https://www.googleapis.com/auth/iam OAuth scope to the application's manifest. My review identifies a critical security issue with this change. The added scope is overly permissive and not the one documented for the service account impersonation flow used in the code. I have recommended replacing it with the correct scope, https://www.googleapis.com/auth/cloud-platform, to adhere to the principle of least privilege and mitigate potential security risks.

[gemini-code-assist]

The https://www.googleapis.com/auth/iam scope is overly permissive and not the correct one for the intended operation. This scope grants broad permissions to manage all IAM policies, which introduces a significant security risk by violating the principle of least privilege. The Credentials.gs file shows a call to the iamcredentials.googleapis.com API to generate an access token. According to the official Google Cloud documentation, this operation requires the https://www.googleapis.com/auth/cloud-platform scope. Please use the documented scope to ensure the application only requests the permissions it strictly needs.

Suggested change

	"https://www.googleapis.com/auth/iam",
	"https://www.googleapis.com/auth/cloud-platform",