Add note to reactivation request

src/types/index.ts

@@ -273,6 +273,13 @@ export interface TenantRequest {
    * domain-uniqueness check on subsequent registrations.
    */
   isPersonal?: boolean;
+  /**
+   * Feature 6: free-form note from the customer, attached at request
+   * creation time. Currently used by resume requests (customer's
+   * explanation of why they want reactivation); kept optional and
+   * generic so future flows can reuse without schema work.
+   */
+  customerNotes?: string | null;
   /**
    * Bug 13: when set, the customer has explicitly dismissed a rejected
    * request from their dashboard. Used by `listActiveTenantRequestsByOrgId`