do to formatters

apps/website/lib/contracts/formatters/Formatter.ts

@@ -1,5 +1,5 @@
 /**
- * DisplayObject contract
+ * Formatter contract
  * 
  * Deterministic, reusable, UI-only formatting/mapping logic.
  * 
@@ -12,18 +12,11 @@
  * - No business rules
  */
 
-export interface DisplayObject {
+export interface Formatter {
   /**
    * Format or map the display object
    * 
    * @returns Primitive values only (strings, numbers, booleans)
    */
   format(): unknown;
-  
-  /**
-   * Optional: Get multiple display variants
-   * 
-   * Allows a single DisplayObject to expose multiple presentation formats
-   */
-  variants?(): Record<string, unknown>;
 }