Release v1.2.4

Dashboard

• Recoloured the dashboard to a warm, neutral palette aligned with the Claude Code interface (less blue): page #161617, cards #1E1F20, lighter text #BFBFBF, plus a --raised hover layer and a dedicated --red. Switched to an elevated layering model — cards sit above the page (lighter), hover lighter still — replacing the previous inverted scheme.
• Reworked chart colours: a warm, Anthropic-leaning donut palette (clay/tan/sage/dusty-blue/…); token series are blue / coral / green / amber; chart axis & legend text use a slightly lighter shade so small labels stay legible on the dark cards.
• Chart hovers now lighten consistently (bars/series go to full opacity; the doughnut pops the hovered slice). Tooltip colour swatches are solid and borderless — removed Chart.js's default white multiKeyBackground edge. The hourly chart's legend/tooltip use a coral circle for the output line and a blue square for the turns bars.
• Legend series toggles now persist across repaints (filter changes, auto-refresh, sorting) for every chart, including per-slice visibility on the doughnut.
• Header title and gauge icon now use the lightest text colour (neutral) instead of coral. Selected model chips use a neutral background with a coral border; range / timezone tabs use a neutral selected background (no orange).
• Cost values use thousand separators (e.g. $1,050.49).
• Header meta puts "Auto-refresh in 30s" on its own line, with more space before the Rescan button.
• Removed the ⚡ peak-hour markers from the hourly axis labels (they collided with the axis; peak hours are still shown by the red bars and the legend).
• Fixed a stale "Apr 2026" stat sublabel → "May 2026".

Extension

• The loading / status screen now matches the dashboard header — same gauge icon (served via a webview URI), title, and elevated-palette colours — instead of the old coral heading on a mismatched background.