Task 495: Relativistic Effects JSON → Report Cross-Checks

Status: DONE

Summary

Added cross-checks validating that relativistic_effects.json calculation values are properly cited in episode reports and the cross-episode summary.

Changes

• Added relativistic_effects.json → report cross-checks describe block to article-content-validation.test.ts
• 12 new tests: peak velocity and β% for each episode (EP01-05), plus max β% and max γ in cross-episode report
• Used primary (first) transfer per episode via Map deduplication to avoid false failures from duplicate transfers (EP01 has both closest and mid-distance scenarios)
• Uses classicalPeakVelocityKms (not relativistic-corrected) since reports cite classical values

Impact

• Catches drift between relativistic calculations JSON and episode/summary report prose
• Consistent with analysis-derived cross-check pattern used across all reports