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# Sales Management
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Sales pipeline management, opportunity tracking, sales phase configuration, and revenue forecasting.
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## Capabilities
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### Opportunity Management
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```python { .api }
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class Opportunity(CremeEntity):
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    """
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    Sales opportunity entity for pipeline management.
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    Attributes:
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    - name: str, opportunity name
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    - sales_phase: ForeignKey, current sales phase
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    - estimated_sales: DecimalField, potential revenue
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    - made_sales: DecimalField, actual revenue
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    - closing_date: DateField, expected close date
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    Methods:
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    - advance_phase(): Move to next sales phase
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    - calculate_probability(): Get close probability
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    """
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```
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### Sales Phase
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```python { .api }
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class SalesPhase(models.Model):
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    """
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    Sales phase for opportunity progression.
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    Attributes:
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    - name: str, phase name
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    - order: int, phase sequence order
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    - won: bool, indicates successful close
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    - lost: bool, indicates lost opportunity
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    """
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```