Task 484: Add Analysis-Derived Value Cross-Checks to EP02-EP04

Status: DONE

Summary

EP01 and EP05 have assertContainsApproxValue cross-checks that verify report prose matches analysis function outputs. EP02-EP04 only use basic string matching without analyzeEpisode*() cross-checks for key derived values.

Add analysis-derived cross-checks to EP02-EP04 to catch report-analysis drift:

• EP02: escape velocity, Saturn capture ΔV, radiation shield budget
• EP03: navigation crisis accuracy, mass boundary, Hohmann baseline
• EP04: plasmoid perturbation, fleet timeline values

Plan

1. Identify key analysis values from analyzeEpisode2(), 3(), 4() that should be cross-checked
2. Add tests using assertContainsApproxValue to verify these values appear in reports
3. Verify all tests pass
4. Commit

Impact

• Prevents silent report-analysis drift for critical values in 3 episodes
• Strengthens the "analysis → report" data integrity pipeline