simvx.editor.panels._animation_timeline

_TimelineRenderer – dope-sheet drawing for the animation panel.

Private sibling helper of :class:~simvx.editor.panels.animation.AnimationPanel. Holds only a back-reference to the owning panel and reads its view/selection state to render the header, ruler, track rows, playhead, and context menu. The panel is injected at runtime, so this module never imports it.