Petru Paler 876e8174ee feat: add animal cohort creation projection and service ...

Implements Step 3.3: Animal Cohort Creation

- Add AnimalRegistryProjection for animal_registry and live_animals_by_location
- Add EventAnimalsProjection for event_animals link table
- Add IntervalProjection for location and attribute intervals
- Add AnimalService with create_cohort() for coordinating event + projections
- Add seeded_db fixture to conftest.py
- Update projections/__init__.py with new exports

All operations atomic within single transaction. Includes validation for
location (exists, active) and species (exists, active).

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2025-12-29 06:52:23 +00:00

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