Rename unused struct fields and methods with _ prefix across 39 files in risk, services, fxt, and test crates. Fixes CorrelationMatrix field reference after rename. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Rename unused struct fields and methods with _ prefix across 39 files in risk, services, fxt, and test crates. Fixes CorrelationMatrix field reference after rename. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>