Task 567: Add configurable animation speed to 3D viewer

Status: DONE

Summary

Added animation speed control button to 3D orbital viewer. Cycles through

0.5×, 1×, 2×, 4× speeds. At 1× the full mission completes in ~15 seconds.

Implementation

• orbital-3d-viewer.js: _animationSpeed state, setAnimationSpeed(), getAnimationSpeed() exports
• templates.ts: Speed button HTML in renderViewer3D, handler in generateViewer3dScript
• orbital-3d.html: Speed button in standalone viewer

Tests added (2 new unit + 1 E2E)

• templates.test.ts: episode speed button, summary speed button (in controls test)
• reports.spec.ts: E2E speed button presence check

Files changed

• ts/src/orbital-3d-viewer.js — speed state + exports
• ts/src/templates.ts — speed button HTML + JS handler
• ts/src/templates.test.ts — 2 speed button tests
• ts/examples/orbital-3d.html — standalone speed button
• ts/e2e/reports.spec.ts — 1 E2E test

Impact

• Human directive phase 30 item (2) addressed