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

i18n/locales/en.json

@@ -38,6 +38,11 @@
       "name": "Languages & Worldbuilding"
     },
     "contact": {
+      "name": "Contact",
+      "toast": {
+        "success": "Email sent!",
+        "error": "Failure sending message"
+      },
       "form": {
         "sendButton": "Send Message",
         "validation": {
@@ -59,8 +64,7 @@
           "message": "Hello, ...",
           "website": "https://example.com"
         }
-      },
-      "name": "Contact"
+      }
     }
   },
   "footer": {
@@ -81,7 +85,7 @@
       "unknown": "The website encountered an unknown error. Please try again later."
     },
     "contact": {
-      "success": "Email sent! We’ve also sent you a confirmation email!",
+      "success": "We’ve also sent you a confirmation email. If you haven’t received anything in a few minutes, please check your junk mail.",
       "honeypot": "Mmmmmh, I love me some honey from the honeypot!",
       "errors": {
         "internal": "The website encountered an internal error. Please try again later.",