Project: pixel-dash · Branch: feat/theme · Mode: default · Model: qwen3-coder Summary Introduced design tokens as CSS custom properties, a system-aware dark mode with a manual override persisted in localStorage, and fixed three charts that hard-coded colors. Conversation Turn 1 — User Add dark mode that follows the OS but can be overridden. Turn 1 — Assistant Tokens in :root and [data-theme=dark], a tiny useTheme hook, and an inline script in index.html that sets the theme before first paint to avoid a flash. Tools used in this turn: - Write: src/theme/tokens.css - Write: src/theme/useTheme.ts - Edit: index.html — pre-paint theme script - Bash: pnpm test — 24 passed Connections - pixel-dash - DesignTokens - DarkMode - CSSCustomProperties