feat: implement keyframe animation system

Add keyframe support for transform, opacity, and volume properties.
Includes animation engine (interpolation, mutations, resolvers), timeline
markers with selection/snapping, properties panel toggles, keyframe-aware
renderer, and full undo/redo command support.

Also refactor element command constructors to object params, extract
timeline pixel math to pixel-utils.ts, and update cursor rules.
This commit is contained in:
Maze Winther
2026-02-27 16:33:57 +01:00
parent 9b94f89def
commit 49426f19cd
55 changed files with 4139 additions and 312 deletions
@@ -0,0 +1,2 @@
export const TIME_EPSILON_SECONDS = 1 / 1000;
export const MIN_TRANSFORM_SCALE = 0.01;