- GET /v1/portfolios/{id}/trades and GET /v1/portfolios/{id}/pnl/realized endpoints
- Weighted Average Cost (WAC) realized PnL calculation in app/domain/pnl.py
- cost_basis and data_completeness_warning returned in pnl API response
- Test coverage: 50 passed (WAC 20 + trades 12 + pnl 18), full 427 passed regression ✓
- WAC validated against 199,300 unit e2e test cases
- DB migration: none required
- QC: qc-reviewer PASS-WITH-NOTES; team lead confirm-batch-verification → release-candidate
- Remaining non-blocking: symbol filter edge case testing, HTTP_422 deprecation
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5
