feat: enhance accessibility and testing with data-test attributes and improve error handling

apps/web/i18n/messages/en/events.json

@@ -0,0 +1,67 @@
+{
+  "nav": {
+    "events": "Events",
+    "newEvent": "New Event",
+    "registrations": "Registrations",
+    "holidayPasses": "Holiday Passes"
+  },
+  "list": {
+    "title": "Events",
+    "newEvent": "New Event",
+    "noEvents": "No events found",
+    "createFirst": "Create your first event.",
+    "upcoming": "Upcoming",
+    "totalRegistrations": "Total Registrations"
+  },
+  "detail": {
+    "notFound": "Event not found",
+    "date": "Date",
+    "time": "Time",
+    "location": "Location",
+    "registrations": "Registrations",
+    "description": "Description",
+    "noRegistrations": "No registrations yet",
+    "parentName": "Parent"
+  },
+  "form": {
+    "basicData": "Basic Data",
+    "name": "Event Name *",
+    "description": "Description",
+    "dateTime": "Date & Time",
+    "eventDate": "Date *",
+    "startTime": "Start Time",
+    "endDate": "End Date",
+    "location": "Location",
+    "contact": "Contact",
+    "contactName": "Contact Person",
+    "contactEmail": "Email",
+    "contactPhone": "Phone",
+    "participantsAndFees": "Participants & Fees",
+    "capacity": "Max Participants",
+    "minAge": "Minimum Age",
+    "maxAge": "Maximum Age",
+    "fee": "Fee (€)",
+    "registrationDeadline": "Registration Deadline",
+    "status": "Status",
+    "created": "Event created successfully",
+    "errorCreating": "Error creating event"
+  },
+  "status": {
+    "planned": "Planned",
+    "open": "Open",
+    "full": "Full",
+    "running": "Running",
+    "completed": "Completed",
+    "cancelled": "Cancelled"
+  },
+  "registrationStatus": {
+    "pending": "Pending",
+    "confirmed": "Confirmed",
+    "waitlisted": "Waitlisted",
+    "cancelled": "Cancelled"
+  },
+  "holidayPasses": {
+    "title": "Holiday Passes",
+    "noPasses": "No holiday passes found"
+  }
+}