[TESTING] Add missing test coverage: DatabaseManager, API routes, Sentinel ingest, RAG pipeline

[TFT444]

Objective

Close the four test coverage gaps from the audit so critical code paths are validated in CI.

Findings addressed

• CI-001 GAP: DatabaseManager has zero unit tests
• CI-002 GAP: Five API route files have zero tests, score, compliance, drift, resources, prioritization
• CI-003 GAP: sentinel/ingest.py HMAC signing and field mappings untested
• CI-004 GAP: Full RAG pipeline untested, ai/embed.py, ai/retriever.py, ai/loader.py

Acceptance criteria

• DatabaseManager has unit tests
• All five API route files have tests
• Sentinel HMAC signing and field mappings tested
• RAG pipeline has tests using the existing mock patterns
• CI passes, base branch dev

Category

CI and Testing

[emon22-ts]

Hi, I want to work on this.Can you please assign it to me

[TFT444]

done go on.