Charts SWIFT CHARTS: - import Charts; use Chart { } container - BarMark, LineMark, AreaMark, PointMark, RuleMark for data visualization - .foregroundStyle(by: .value("Category", item.category)) for color coding - chartXAxis { AxisMarks() }, chartYAxis { AxisMarks() } for custom axis labels - Extract Chart into a separate computed property to avoid body complexity - Use .chartScrollableAxes(.horizontal) for large datasets ---