feat: redesign UI to match lovable compact sidebar layout

- Replace green hacker theme with professional blue-toned design
- Light theme default, manual toggle only (no system detection)
- Compact w-60 sidebar with collapsible sections
- New CSS tokens: sidebar, chart, candle, annotation colors
- Tools displayed as compact grid buttons
- Color swatches as inline bar
- Chart top bar with keyboard shortcut hints
- Inter + JetBrains Mono font pairing
- All components updated for compact styling
- Tailwind config extended with sidebar/chart tokens

tailwind.config.js

@@ -0,0 +1,73 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  darkMode: ["class"],
+  content: [
+    "./src/**/*.{js,ts,jsx,tsx,mdx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        background: "hsl(var(--background))",
+        foreground: "hsl(var(--foreground))",
+        card: {
+          DEFAULT: "hsl(var(--card))",
+          foreground: "hsl(var(--card-foreground))",
+        },
+        popover: {
+          DEFAULT: "hsl(var(--popover))",
+          foreground: "hsl(var(--popover-foreground))",
+        },
+        primary: {
+          DEFAULT: "hsl(var(--primary))",
+          foreground: "hsl(var(--primary-foreground))",
+        },
+        secondary: {
+          DEFAULT: "hsl(var(--secondary))",
+          foreground: "hsl(var(--secondary-foreground))",
+        },
+        muted: {
+          DEFAULT: "hsl(var(--muted))",
+          foreground: "hsl(var(--muted-foreground))",
+        },
+        accent: {
+          DEFAULT: "hsl(var(--accent))",
+          foreground: "hsl(var(--accent-foreground))",
+        },
+        destructive: {
+          DEFAULT: "hsl(var(--destructive))",
+          foreground: "hsl(var(--destructive-foreground))",
+        },
+        border: "hsl(var(--border))",
+        input: "hsl(var(--input))",
+        ring: "hsl(var(--ring))",
+        sidebar: {
+          DEFAULT: "hsl(var(--sidebar-background))",
+          foreground: "hsl(var(--sidebar-foreground))",
+          primary: "hsl(var(--sidebar-primary))",
+          "primary-foreground": "hsl(var(--sidebar-primary-foreground))",
+          accent: "hsl(var(--sidebar-accent))",
+          "accent-foreground": "hsl(var(--sidebar-accent-foreground))",
+          border: "hsl(var(--sidebar-border))",
+          ring: "hsl(var(--sidebar-ring))",
+        },
+        "candle-bull": "hsl(var(--candle-bull))",
+        "candle-bear": "hsl(var(--candle-bear))",
+      },
+      borderRadius: {
+        lg: "var(--radius)",
+        md: "calc(var(--radius) - 2px)",
+        sm: "calc(var(--radius) - 4px)",
+      },
+      keyframes: {
+        "fade-in": {
+          from: { opacity: "0" },
+          to: { opacity: "1" },
+        },
+      },
+      animation: {
+        "fade-in": "fade-in 0.2s ease-in-out",
+      },
+    },
+  },
+  plugins: [],
+};