# Plan: ClassifiedAd Domain Entity

## Status: COMPLETED

## Objective
Create the first Domain Entity representing a ClassifiedAd with the specified attributes.

## Decisions Made
- **Location**: `domain/marketplace/classified_ad.py`
- **Class style**: `@dataclass(frozen=True)` for immutability
- **Validation**: No validation, just hold data
- **Tests**: Yes, create unit tests

## Entity Structure
```python
@dataclass(frozen=True)
class ClassifiedAd:
    id: UUID
    _ownerId: UUID
    title: str
    text: str
    _price: Decimal
```

## Files Created
- `domain/__init__.py`
- `domain/marketplace/__init__.py`
- `domain/marketplace/classified_ad.py`
- `tests/test_classified_ad.py`
- `pyproject.toml`

## Test Results
- `test_classified_ad_creation` - PASSED
- `test_classified_ad_is_immutable` - PASSED
- `test_classified_ad_equality` - PASSED