fix management token validation function

[guyp-descope]

Fixes https://github.com/descope/etc/issues/13124

[Copilot]

Pull request overview

This PR fixes the management token validation by ensuring JWT responses generated through the management API use the proper token validation function. The key changes involve threading the Auth instance through the MGMT and JWT classes to enable proper token validation.

• Adds Auth dependency to the MGMT and JWT management classes
• Updates generate_jwt_response calls to use the Auth.validate_token method
• Exposes a public validate_token method in the Auth class

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
descope/mgmt.py	Adds auth parameter to MGMT.__init__ and passes it to the JWT instance
descope/management/jwt.py	Adds auth parameter to JWT.__init__ and updates generate_jwt_response calls to use auth.validate_token
descope/descope_client.py	Passes auth instance when instantiating MGMT
descope/auth.py	Adds public validate_token method that wraps the private _validate_token method

Comments suppressed due to low confidence (1)

descope/mgmt.py:37

• The docstring's Args section is incomplete. It documents http_client but is missing documentation for the newly added auth parameter and the existing fga_cache_url parameter.

    def __init__(
        self, http_client: HTTPClient, auth: Auth, fga_cache_url: Optional[str] = None
    ):
        """Create a management API facade.

        Args:
            http_client: HTTP client to use for all management HTTP calls.

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Coverage report

The coverage rate went from 98.19% to 98.12% ⬇️

92.3% of new lines are covered.

Diff Coverage details (click to unfold)

descope/management/jwt.py

100% of new lines are covered (100% of the complete file).

descope/auth.py

50% of new lines are covered (97.7% of the complete file).
Missing lines: 390

descope/mgmt.py

100% of new lines are covered (100% of the complete file).