Retrieves a single request with complete details including content, assignee information, priority, status,
custom properties, associations, and metadata. This endpoint is useful for direct request access, deep linking,
and detailed request display in user interfaces.

Key Features:

• Retrieves complete request details with all metadata and relationships
• Includes assignee, assigner, and creator information
• Returns custom property values and request form associations
• Validates user access permissions before returning request data
• Supports direct request linking and reference resolution

Authorization Logic:

1. User must have a valid JWT token with viewing or management scopes
2. Valid token is required for retrieval
3. User must have access to the request and its parent space
4. Request visibility is filtered based on user's access permissions

Usage Example:

Retrieve specific request details for display in request management interfaces or notification systems.