Task 606: 3D Viewer Time Slider Scene-Switch Sync

Status: DONE

Summary

Human directive: time slider の幅が可視化種類切り替えに追従してない。

Fix: Added total duration indicator (/ X日Y時間) next to the current time display. When switching scenes, the total duration updates to show the new scene's duration, making it visually clear that the slider range has changed. Moved fmtDay() function to module scope so it's available during scene switch. Applied to both inline viewer (templates.ts) and standalone viewer (orbital-3d.html). 2 new E2E tests verify the indicator appears and updates on scene switch.

Key Files

• ts/src/orbital-3d.html — standalone 3D viewer
• ts/src/templates.ts — inline 3D viewer rendering
• ts/e2e/reports.spec.ts — E2E tests for 3D viewer