* refactor(canvas): adopt immutable CanvasKit paths
- Upgrade CanvasKit to 0.41.1 across app, Core, CLI, and Vue peers
- Build mutable geometry with PathBuilder and detach immutable paths for drawing
- Replace in-place strokes, transforms, and boolean operations with immutable results
- Update renderer mocks and path construction tests for the new API
* test(canvas): model immutable path ownership
- Return detached path instances from CanvasKit builder mocks
- Assert shadow ring and combined path disposal
- Preserve recorded vector operations across ownership transfer
* fix(build): align CanvasKit workspace versions
- Use polygon, star, and vector paths for shadows when geometry blobs are unavailable
- Apply shadow spread to copied geometry paths without mutating caches
- Clip and cut out inner shadows with the same path geometry
Co-authored-by: Joseph Cumines <joeycumines@gmail.com>
