2be7b5e193
Theme simplification (theme/theme.go): - Remove Purple and BorderHover fields from Theme struct — neither was referenced in the new tab renderers, reducing per-theme boilerplate from 14 to 12 color definitions Component extraction (components/): - Move Sparkline() and BarChart() from card.go to new chart.go, giving visualization components their own file as complexity grows - card.go retains MetricCard, ContentCard, LayoutRow, and CardInnerWidth which are layout-focused - New chart.go: Sparkline (unicode block chars) and BarChart (multi-row with anchored Y-axis, optional X-axis labels, dynamic height/width) - New progress.go: ProgressBar component with customizable width, color, and percentage display — used by rate-limit and budget views Status bar and tab bar updates: - statusbar.go: adapt to simplified theme struct - tabbar.go: adapt to simplified theme struct