Reporting System

class Report(CremeEntity):
    """
    Custom report entity for business intelligence.

    Attributes:
    - name: str, report name
    - description: TextField, report description
    - ct: ContentType, target entity type
    
    Methods:
    - execute(): Run report and get results
    """

class Graph(CremeEntity):
    """
    Graph entity for data visualization.

    Attributes:
    - name: str, graph name
    - chart_type: str, chart type (bar, line, pie)
    
    Methods:
    - generate(): Create chart data
    """