🧪 Add tests for osvToThreatProfile

[miccy]

🎯 What: The testing gap addressed

• Added unit tests for the osvToThreatProfile function in the engine's ingestion module.

📊 Coverage: What scenarios are now tested

• Basic conversion of OSV records to the internal ThreatProfile format.
• CVSS_V3 score mapping to severity levels (CRITICAL, HIGH, MEDIUM, LOW).
• Handling of non-CVSS_V3 severity types and missing severity data.
• Handling of multiple affected packages and missing package information.
• Mapping of references and handling of missing summaries or references.

✨ Result: The improvement in test coverage

• The osvToThreatProfile function is now fully covered by unit tests, ensuring reliability in how OSV vulnerability data is ingested into the system.

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PR created automatically by Jules for task 9645515008650289582 started by @miccy

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test-osv-to-threat-profile-9645515008650289582

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[miccy]

✅ Merged into dev/feat-grant-ready-foundation (commit 001710d).