SectionCard
fun SectionCard(modifier: Modifier = Modifier, title: String? = null, subtitle: String? = null, leadingIcon: ImageVector? = null, trailingAction: @Composable () -> Unit? = null, contentPadding: Dp = DesignTokens.Spacing.l, content: @Composable ColumnScope.() -> Unit)
Bordered surface card — the fundamental container: optional leading icon in a tinted rounded container, title + subtitle, and a trailing action slot, with the body rendered below in a Column.