feat(contact): add toast notifications for form feedback

- Add toast notifications for contact form success/error responses
- Add toast notifications for backend errors in AppFooter
- Add accessibility explanation for honeypot field
- Add loading state to contact form submit button
- Add i18n translations for toast messages (en/fr)
- Fix honeypot input missing v-model binding

app/composables/useApi.test.ts

@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import { nextTick } from 'vue';
 import type { FetchError } from 'ofetch';
@@ -14,10 +16,6 @@ vi.mock('#app', () => ({
 }));
 
 // Mock $fetch globally
-declare global {
-  var $fetch: ReturnType<typeof vi.fn>;
-}
-// global.$fetch = vi.fn();
 vi.mock('#app', () => ({
   useRuntimeConfig: vi.fn(() => ({
     public: {