Dashboard integrations need machine-readable optimize findings and yield ratios without parsing terminal output. This threads the existing analysis results into conservative JSON serializers while preserving text output as the default.
Constraint: Issue #419 asks for dashboard-friendly JSON for optimize and yield
Rejected: Build a separate analysis path | would risk drift from terminal output
Confidence: high
Scope-risk: narrow
Tested: npm test
Tested: npm run build
Tested: npm run dev -- optimize -p today --format json
Tested: npm run dev -- yield -p today --format json
Not-tested: Real downstream dashboard integration
