Task 580: Add from/to Planet Fields to TimelineTransfer

Status: DONE

Description

The getOrbitForTransfer() function in orbital-3d-viewer.js uses a hardcoded

episodeRoutes mapping (episode→planet pair) instead of deriving planet names

from the transfer data. This is fragile and fails for episode 5.

Fix: Add from and to planet name fields to TimelineTransfer interface,

populate them from transfer data, and use them directly in getOrbitForTransfer.

Files

• ts/src/orbital-3d-viewer-data.ts — add fields to interface and builder
• ts/src/orbital-3d-viewer.js — use transfer.from/to instead of hardcoded map
• ts/src/templates.ts — update inline viewer
• ts/examples/orbital-3d.html — update standalone
• ts/src/orbital-3d-viewer-data.test.ts — test new fields