Add Ayu Dark theme to theme options

src/lib/components/ThemeSwitcher.svelte

@@ -14,7 +14,7 @@
   const themeGroups = [
     {
       label: "Dark",
-      themes: ["catppuccin", "dracula", "monokaiPro", "tokyoNight"],
+      themes: ["catppuccin", "dracula", "monokaiPro", "tokyoNight", "ayuDark"],
     },
     {
       label: "Light",

src/lib/styles/index.ts

@@ -567,4 +567,31 @@ export const themes: Record<string, Theme> = {
       teal: "#94e2d5",
     },
   },
+  ayuDark: {
+    name: "ayuDark",
+    label: "Ayu Dark",
+    colors: {
+      base: "#0D1017",
+      mantle: "#131721",
+      crust: "#232834",
+      text: "#BFBDB6",
+      subtext0: "#707a8c",
+      subtext1: "#8b939e",
+      surface0: "#0f1419",
+      surface1: "#131721",
+      surface2: "#212733",
+      overlay0: "#E6B450",
+      overlay1: "#434c5e",
+      blue: "#36a3d9",
+      lavender: "#d2a8ff",
+      sapphire: "#0f958a",
+      sky: "#c9d1d9",
+      red: "#D95757",
+      maroon: "#e06c75",
+      peach: "#f07178",
+      yellow: "#ffb454",
+      green: "#b8cc52",
+      teal: "#95e6cb",
+    },
+  },
 };