Task 226: Fix stale relativistic analysis conclusion + regenerate calculations

Status: DONE

Description

1. Stale "479日" in relativistic conclusion: The relativistic-analysis.ts had a hardcoded "479日" (sum of all scenario durations from the pre-455→87d correction era). Replaced with dynamically computed values: "全6シナリオ（計136日分）". This clarifies that the cumulative dilation is summed across multiple alternative scenarios, not a single journey.
2. EP02 cruise velocity correction: The generated relativistic_effects.json had stale EP02 values (1500 km/s peak, β=0.5%, 94s dilation) from before the trim-thrust correction. Regenerated with correct 65 km/s cruise velocity (β=0.02%, 0.18s dilation). Cumulative dilation: 665.9s → 174.0s.
3. Tech-overview stats update: Tasks 222→225, TS tests 1815→1818, commits 339→343.

Files

• ts/src/relativistic-analysis.ts — dynamic conclusion text
• reports/data/calculations/relativistic_effects.json — regenerated
• reports/data/summary/tech-overview.md — updated stats