Rename path parameter {token} to {eventToken} in OpenAPI spec

Aligns the path parameter naming with the value object convention
used throughout the codebase (eventToken, rsvpToken, organizerToken).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/EventList.vue

@@ -76,10 +76,10 @@ async function confirmDelete() {
 
   if (rsvp) {
     try {
-      const { response } = await api.DELETE('/events/{token}/rsvps/{rsvpToken}', {
+      const { response } = await api.DELETE('/events/{eventToken}/rsvps/{rsvpToken}', {
         params: {
           path: {
-            token: eventToken,
+            eventToken: eventToken,
             rsvpToken: rsvp.rsvpToken,
           },
         },