98eaa9fb27
DotGridProgress replaced GeometryReader + 200+ Circle view nodes with a single Canvas draw call. Canvas receives its own size parameter so no GeometryReader is needed; SwiftUI interpolates the progress value through the .animation modifier for smooth fill transitions. FloatingTabState ScrollYKey made private to TabBarScrollModifier to limit its PreferenceKey scope and prevent unintended propagation across unrelated subtrees.