feat(auth): add named account profiles

[rohan-patnaik]

Description

Adds named auth profiles so users can keep separate Google Workspace credentials and token caches for different accounts or tenants.

What changes:

• Adds a global --profile <name> flag and GOOGLE_WORKSPACE_CLI_PROFILE env var.
• Keeps the existing default profile paths unchanged.
• Stores named profile credentials and token caches under ~/.config/gws/profiles/<name>/.
• Makes auth login, auth status, and auth logout profile-aware.
• Clears profile token caches after auth login so a profile does not keep using stale tokens from a previous login.
• Keeps OAuth client configuration shared, so users do not need to duplicate client_secret.json for every profile.

This is intended to make account switching explicit and safer for users who work across multiple accounts, Workspace domains, or customers.

Refs #439, #572, #764, #780.

Dry Run Output:

// Not applicable: this adds auth profile storage/routing, not a request-building helper.

Checklist:

• My code follows the AGENTS.md guidelines (no generated google-* crates).
• I have run cargo fmt --all to format the code perfectly.
• I have run cargo clippy -- -D warnings and resolved all warnings. See testing note below.
• I have added tests that prove my fix is effective or that my feature works.
• I have provided a Changeset file (e.g. via pnpx changeset) to document my changes.

Testing

• cargo fmt --all --check
• cargo test -q
• cargo clippy -- -D warnings is blocked locally by the existing script.rs clippy warning on current main; that warning is fixed separately in fix(script): skip ignored directories during push #786.

[changeset-bot]

🦋 Changeset detected

Latest commit: 46af288

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@googleworkspace/cli	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[gemini-code-assist]

Summary of Changes

Hello, 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 enhances the CLI by adding support for named authentication profiles. This enables users to manage multiple Google Workspace identities independently without needing to duplicate OAuth client configurations. The changes include new command-line flags, environment variable support, and updated file path logic to ensure credentials and caches are isolated per profile.

Highlights

• Named Auth Profiles: Introduced support for named authentication profiles, allowing users to maintain separate Google Workspace credentials and token caches for different tenants or accounts.
• Global Configuration: Added a global --profile <name> flag and GOOGLE_WORKSPACE_CLI_PROFILE environment variable to manage profile selection.
• Isolated Storage: Configured profile-specific storage paths under ~/.config/gws/profiles/<name>/ while maintaining backward compatibility for the default profile.
• Auth Lifecycle Integration: Updated auth login, auth status, and auth logout to be profile-aware, including automatic token cache clearing upon login to prevent stale token usage.

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[gemini-code-assist]

Code Review

This pull request introduces named auth profiles to the CLI, allowing users to maintain isolated credentials and token caches. Users can specify a profile using the --profile flag or the GOOGLE_WORKSPACE_CLI_PROFILE environment variable. The implementation includes logic for profile-specific directory resolution, profile name validation, and updated argument parsing to handle global flags. I have no feedback to provide as no review comments were submitted.

[github-actions]

This PR has been inactive for 72 hours. Closing to keep the queue clean.

[github-actions]

This PR was closed because it has been stalled for 72 hours. Feel free to magically reopen it if you want to continue working on it!

[rohan-patnaik]

This PR was auto-closed for inactivity. The branch is still available, checks were passing, and Gemini had no remaining feedback. Could a maintainer reopen this for review when convenient?