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a88b0eea60
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feat(02-01): add gnomAD constraint data models and download module
- Create evidence layer package structure
- Define ConstraintRecord Pydantic model with NULL preservation
- Implement streaming download with httpx and tenacity retry
- Add lazy TSV parser with column name variant handling
- Add httpx and structlog dependencies
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2026-02-11 18:11:49 +08:00 |
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