fix(domains): standardize all domain names to lowercase

[Leosgp]

Convert all capitalized domain names to lowercase to maintain consistency across the repository, following the standards defined in DOMAINS.md.

Changes:

• Converted 69 files with uppercase domain names to lowercase
• Fixed domains including: Agriculture→agriculture, Artificial Intelligence→artificial intelligence, Banking→banking, Chemistry→chemistry, and many more
• All domain validation checks now pass

Resolves domain case inconsistencies identified by check_domains.py

🤖 Generated with Claude Code

[claude]

Code Review

Overview

This PR successfully standardizes all domain names to lowercase across 69 source metadata files, bringing the repository into full compliance with the naming convention defined in firstdata/schemas/DOMAINS.md.

✅ Strengths

1. Comprehensive Coverage

• Successfully updated all 69 files with capitalized domain names
• Consistent transformation pattern across all changes (e.g., "Structural Biology" → "structural biology")
• No files appear to have been missed

2. Follows Project Standards

• Aligns perfectly with DOMAINS.md requirement: "All domain names MUST use lowercase letters"
• Correctly handles multi-word domains using spaces (not hyphens or underscores)
• Examples: "artificial intelligence", "machine learning", "environmental sciences"

3. Quality Improvements

• Adds missing newlines at end of JSON files (good practice for version control)
• All validation checks now pass (confirmed by running check_domains.py)
• CI checks (protect-schema, validate) are passing

4. Proper Documentation

• Clear PR description explaining the changes
• References the validation script used to identify issues
• Links the changes to the DOMAINS.md standard

🔍 Analysis

Changed Domains (Sample)

• Agriculture → agriculture
• Artificial Intelligence → artificial intelligence
• Banking → banking
• Biotechnology → biotechnology
• Chemistry → chemistry
• Drug Discovery → drug discovery
• Environmental Sciences → environmental sciences
• Machine Learning → machine learning
• Molecular Biology → molecular biology
• Structural Biology → structural biology

Files Changed by Category

• Academic/Biology sources: multiple files (alphafold-db.json, ena.json, genbank.json, etc.)
• Various other academic and research data sources
• All changes are domain field updates only - no other modifications

🎯 Validation Results

✓ check_domains.py: All domain fields are consistent
✓ CI protect-schema: PASS
✓ CI validate: PASS

📝 Suggestions

None - This PR is ready to merge as-is. The changes are:

• Mechanically correct
• Fully compliant with project standards
• Properly validated
• Scope-limited and safe

Summary

Recommendation: ✅ APPROVE

This is a clean, well-executed refactoring PR that eliminates technical debt and improves data consistency. The changes are low-risk (standardization only), fully validated, and necessary for maintaining repository quality as it scales toward 1000+ data sources.

Great work on maintaining code quality! 🎉