feat(tokens): add earth theme

packages/tokens/src/index.ts

@@ -1,4 +1,4 @@
-export const themeNames = ["morandi", "brand"] as const;
+export const themeNames = ["morandi", "earth", "brand"] as const;
 export type ThemeName = (typeof themeNames)[number];
 
 export const defaultTheme: ThemeName = "morandi";
@@ -8,6 +8,10 @@ export const themeDetails = {
     label: "Morandi",
     note: "Muted dusty neutrals with a calm, understated luxury mood"
   },
+  earth: {
+    label: "Earth",
+    note: "Organic browns, terracotta warmth, olive depth, and sandstone calm"
+  },
   brand: {
     label: "Brand",
     note: "Verdant accent scaffold"