Improve UI

frontend/src/utils/currency.ts

@@ -27,7 +27,15 @@ export const CURRENCY_CONFIG = {
   },
 } as const;
 
-type CurrencyCode = keyof typeof CURRENCY_CONFIG;
+export type CurrencyCode = keyof typeof CURRENCY_CONFIG;
+
+// Default currency for the application (Euro)
+export const DEFAULT_CURRENCY: CurrencyCode = 'EUR';
+
+// Get currency symbol
+export const getCurrencySymbol = (currencyCode: CurrencyCode = DEFAULT_CURRENCY): string => {
+  return CURRENCY_CONFIG[currencyCode]?.symbol || '€';
+};
 
 // Format currency amount
 export const formatCurrency = (

frontend/src/utils/smartActionHandlers.ts

@@ -7,6 +7,8 @@
 
 import { useNavigate } from 'react-router-dom';
 import { SmartAction as ImportedSmartAction, SmartActionType } from '../api/types/events';
+import { useTenantStore } from '../stores/tenant.store';
+import { getTenantCurrencySymbol } from '../hooks/useTenantCurrency';
 
 // ============================================================
 // Types (using imported types from events.ts)
@@ -168,7 +170,7 @@ export class SmartActionHandler {
           body: JSON.stringify({
             action: 'approve',
             approved_by: 'current_user',
-            notes: `Approved via alert action${amount ? ` (€${amount})` : ''}`,
+            notes: `Approved via alert action${amount ? ` (${getTenantCurrencySymbol(useTenantStore.getState().currentTenant?.currency)}${amount})` : ''}`,
           }),
         }
       );

frontend/src/utils/validation.ts

@@ -2,14 +2,49 @@
  * Validation utilities for forms and data
  */
 
-// Email validation
+import { z } from 'zod';
+
+// =============================================================================
+// ZOD SCHEMAS - Centralized validation schemas for consistent validation
+// =============================================================================
+
+/**
+ * Email validation schema using Zod
+ * - Uses Zod's built-in email validator (RFC 5322 compliant)
+ * - Trims whitespace before validation
+ * - Provides consistent error messages in Spanish
+ */
+export const emailSchema = z
+  .string()
+  .trim()
+  .min(1, 'El email es requerido')
+  .email('Por favor, ingrese un email válido');
+
+/**
+ * Validates an email string using the centralized Zod schema
+ * @param email - The email string to validate
+ * @returns Object with isValid boolean and optional error message
+ */
+export const validateEmail = (email: string): { isValid: boolean; error?: string } => {
+  const result = emailSchema.safeParse(email);
+  if (result.success) {
+    return { isValid: true };
+  }
+  return { isValid: false, error: result.error.errors[0]?.message };
+};
+
+// =============================================================================
+// LEGACY VALIDATION FUNCTIONS - Kept for backward compatibility
+// =============================================================================
+
+// Email validation (legacy - use validateEmail or emailSchema instead)
 export const isValidEmail = (email: string): boolean => {
   if (!email || typeof email !== 'string') {
     return false;
   }
 
-  const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
-  return emailRegex.test(email.trim());
+  const result = emailSchema.safeParse(email);
+  return result.success;
 };
 
 // Spanish phone number validation