Task 023: Episode 5 (Finale) Analysis

Status: DONE

Episode Info

• Title: SOLAR LINE Part5 END（ソーラーライン）【良いソフトウェアトーク劇場】
• Niconico: sm45987761
• YouTube: TBD (uploaded 2026-02-24, not yet on YouTube)
• Duration: 27:11
• Upload date: 2026-02-24
• Note: Series finale. Creator originally planned 4 parts, expanded to 5.

Progress

• [x] Identify video IDs and metadata (Niconico API)
• [x] Add lunar constants to orbital.ts
• [x] Create ep05-analysis.ts (6 analysis functions, Codex design review)
• [x] Write ep05-analysis.test.ts (38 tests, all passing)
• [x] Build ep05.json report (5 transfers, 3 explorations, 2 orbital diagrams)
• [x] Update cross-episode consistency analysis for 5 episodes
• [x] Regenerate cross-episode.json
• [x] Whisper STT extraction: 164 lines (Task 036)
• [x] Speaker attribution: 5 speakers, 13 scenes, 113 dialogue entries (Task 009)
• [x] Report updated: 24 dialogue quotes, all 5 transfers linked to evidence
• [x] Summary updated: removed "暫定" markers, added actual EP05 parameters
• [x] Verdicts updated: transfer-03 and transfer-04 upgraded from "conditional" to "plausible"
• [x] All tests pass (830 TS + 79 Rust = 909 total)
• [x] Site builds: 5 episodes, 24 transfers, 3 summaries, 7 logs

Key Analysis Results (Updated with Dialogue Data)

• Route plan: 4 burns over 507h (21.1 days), not pure brachistochrone

- Burn 1: Uranus escape + cruise acceleration → 1500 km/s

- Burn 2: Jupiter powered flyby (Oberth effect +3%)

- Burn 3: Mars deceleration → Earth entry trajectory

- Burn 4: Earth LEO 400km insertion (manual override)

• Final speed: 2100 km/s (nuclear torpedo evasion threshold)
• Nozzle lifetime: 55h38m remaining vs 55h12m needed (26min margin)
• Navigation: Stellar autonomous nav, 20km accuracy (vs 50m with beacons)
• Political: Earth shuts down all solar system navigation (700 ships affected)
• Allies: Muse (Enceladus) provides calibration signal, Rai (Ganymede) creates decoy tracks
• Outcome: LEO achieved, nozzle destroyed, "この船はもう飛べません"

Files Created/Modified

• ts/src/orbital.ts — Added MU.MOON, EARTH_RADIUS, MOON_ORBIT_RADIUS, LEO_ALTITUDE
• ts/src/ep05-analysis.ts — 6 analysis functions
• ts/src/ep05-analysis.test.ts — 38 tests
• reports/data/episodes/ep05.json — Episode 5 report (complete)
• reports/data/episodes/ep05_speakers.json — 5 speakers
• reports/data/episodes/ep05_dialogue.json — 113 entries, 13 scenes
• ts/src/cross-episode-analysis.ts — Updated for 5 episodes
• reports/data/summary/cross-episode.json — Regenerated

Depends on

• Task 020 (Episode 4 analysis) — DONE
• Task 021 (Cross-episode consistency) — DONE
• Task 036 (Whisper STT) — DONE
• Task 009 (Dialogue attribution) — DONE