do to formatters

apps/website/lib/formatters/MemberFormatter.ts

@@ -0,0 +1,22 @@
+/**
+ * MemberDisplay
+ * 
+ * Deterministic display logic for members.
+ */
+
+export class MemberFormatter {
+  /**
+   * Formats a member count with pluralization.
+   * Example: 1 -> "1 member", 2 -> "2 members"
+   */
+  static formatCount(count: number): string {
+    return `${count} ${count === 1 ? 'member' : 'members'}`;
+  }
+
+  /**
+   * Formats a member count as "Units" (used in some contexts).
+   */
+  static formatUnits(count: number): string {
+    return `${count} ${count === 1 ? 'Unit' : 'Units'}`;
+  }
+}