Task 501: Expand Recalculate Pipeline with 3D Orbital + Transcription Accuracy

Status: DONE

Summary

Extended npm run recalculate to include 3D orbital analysis and transcription accuracy as sections 5 and 6, completing the "all analyses in one pass" requirement from CLAUDE.md.

Changes

Refactored modules

orbital-3d-analysis.ts: Extracted analyze3DOrbital() as exported function. Standalone CLI runs only when invoked directly.
transcription-accuracy-report.ts: Exported generateTranscriptionAccuracyReport(). Standalone CLI runs only when invoked directly.

recalculate.ts

Added section 5: 3D orbital analysis → 3d_orbital_analysis.json
Added section 6: Transcription accuracy → transcription_accuracy.json
Both skip when --episode N filter is used (cross-episode analyses)
Updated header comment documenting all 6 sections

Tests (recalculate.test.ts)

3 new tests:

- analyze3DOrbital() returns valid output with transfers, ring analysis, approach geometry

- generateTranscriptionAccuracyReport() returns valid episodes with accuracy metrics

- recalculate.ts source references both new functions and output filenames

Pipeline now covers

Section	Analysis	Output
1	Per-episode orbital mechanics (EP01-05)	`ep0X_calculations.json`
2	Reproduction command stamping	Episode report transfers
3	Summary report regeneration (optional)	`cross-episode.json`, `ship-kestrel.json`
4	Relativistic effects	`relativistic_effects.json`
5	3D orbital analysis	`3d_orbital_analysis.json`
6	Transcription accuracy	`transcription_accuracy.json`

Not included (by design)

integrator_comparison.json — generated by Rust tests (cargo test --test episode_integrator_comparison), not TS
ep0X_onscreen_crossref.json — manually curated data extraction, not computed