Task 43: Full-Route Orbital Diagram & EP05 Lines Fix

Task 043: Full-Route Orbital Diagram & EP05 Lines Fix

EP05 ep05_lines.json gap: EP01-04 all have Phase 1 extraction files committed to reports/data/episodes/, but EP05's ep05_lines.json only exists in gitignored raw_data/whisper/. This breaks the consistency of the two-phase dialogue pipeline and prevents future sessions from inspecting EP05's source extraction without re-running Whisper.
Cross-episode full-route diagram: The cross-episode summary report describes the full 5-episode route (Mars → Ganymede → Jupiter escape → Enceladus → Titania → Earth, 35.9 AU total) in the "航路の連続性" section, but has no orbital diagram. The SummarySection type already supports orbitalDiagrams, and individual episode reports all have diagrams. A full-route heliocentric diagram would visually unify the entire journey.

[x] Copied raw_data/whisper/ep05_lines.json to reports/data/episodes/ep05_lines.json
[x] All 830 TS tests pass (no validation test changes needed)

[x] Designed heliocentric diagram showing all 5 planetary orbits (Earth, Mars, Jupiter, Saturn, Uranus)
[x] Added 4 transfer arcs with distinct episode colors (Codex-reviewed):

- EP01 Mars→Jupiter: #3fb950 (green, brachistochrone)

- EP02 Jupiter→Saturn: #8b949e (gray, ballistic/hyperbolic)

- EP03 Saturn→Uranus: #ff6600 (orange, brachistochrone)

- EP05 Uranus→Earth: #ff4444 (red, composite brachistochrone)

[x] EP05 shown as canonical route (Codex recommendation: EP04 theoretical route omitted)
[x] Animation with compressed timing (520,000s timeline) — each leg gets visible animation time
[x] 10 burn markers: EP1 accel/decel, EP2 escape/capture, EP3 accel/decel, EP5 escape/flyby/decel/capture
[x] Planetary positions from computed 2241-2242 ephemeris (consistent with episode diagrams)
[x] Site builds and renders correctly