pub fn render_heatmap(
data: &AnalyticsChartData,
metric: HeatmapMetric,
selection: usize,
area: Rect,
frame: &mut Frame<'_>,
dark_mode: bool,
)Expand description
Render the Heatmap view: GitHub-contributions-style calendar with metric selector, day-of-week labels, month headers, selection highlight, and legend.