[herber]

Note

Low Risk
Generated schema-only additions with optional fields; no auth or runtime logic changes.

Overview
Adds support for a new exec URL on sandbox machine access token responses across the generated Magnetar client models.

Each *OutputUrls dataclass now includes optional exec_ (mapped from JSON key exec in from_dict), alongside existing shell, files, and ports URLs. The same update is applied in parallel for dashboard, management, and sandbox access resources (files, ports, and shell).

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