feat(events): organizer name + reply-to fields in the event editor

Pairs with aiolabs/events v1.6.1-aio.11: `extra.organizer_name` becomes
the From display name of ticket emails ("Organizer via <site>") and
`extra.reply_to_email` the Reply-To (blank = the organizer's account
email). Both live under the notifications section next to the per-event
subject/body; the reply-to is validated as an email or left empty.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EYwoAkZZmXMMmaBp4WGUBo

src/modules/events/components/CreateEventDialog.vue

@@ -71,6 +71,10 @@ interface Props {
   autoApprove?: boolean
 }
 
+// Instance name used in the From display name of ticket emails
+// (the LNbits site title on the backend; the standalone's brand here).
+const siteName = (import.meta.env.VITE_APP_NAME as string) || 'Events'
+
 const props = defineProps<Props>()
 const emit = defineEmits<{
   'update:open': [value: boolean]
@@ -144,6 +148,12 @@ const formSchema = toTypedSchema(
       nostr_notifications: z.boolean().default(false),
       notification_subject: z.string().max(200).default(''),
       notification_body: z.string().max(2000).default(''),
+      organizer_name: z.string().trim().max(100).default(''),
+      reply_to_email: z
+        .string()
+        .trim()
+        .default('')
+        .refine((v) => v === '' || z.string().email().safeParse(v).success, 'Invalid email address'),
     })
     .superRefine((v, ctx) => {
       // End must not precede start. Compare on the folded date+time
@@ -193,6 +203,8 @@ const form = useForm({
     nostr_notifications: false,
     notification_subject: '',
     notification_body: '',
+    organizer_name: '',
+    reply_to_email: '',
   }
 })
 
@@ -299,6 +311,8 @@ async function populateFromEvent(event: TicketedEvent) {
     nostr_notifications: event.extra?.nostr_notifications ?? false,
     notification_subject: event.extra?.notification_subject ?? '',
     notification_body: event.extra?.notification_body ?? '',
+    organizer_name: event.extra?.organizer_name ?? '',
+    reply_to_email: event.extra?.reply_to_email ?? '',
   })
   selectedCategories.value = [...(event.categories ?? [])]
   if (event.banner) {
@@ -425,6 +439,8 @@ const onSubmit = form.handleSubmit(async (formValues) => {
       nostr_notifications: formValues.nostr_notifications,
       notification_subject: formValues.notification_subject,
       notification_body: formValues.notification_body,
+      organizer_name: formValues.organizer_name,
+      reply_to_email: formValues.reply_to_email || null,
     }
 
     if (isEditMode.value) {
@@ -851,6 +867,35 @@ const handleOpenChange = (open: boolean) => {
                   <FormMessage />
                 </FormItem>
               </FormField>
+
+              <!-- Sender identity: the From address stays the instance
+                   mailbox (that is what DKIM signs); the organizer only
+                   controls the display name and where replies land. -->
+              <FormField v-slot="{ componentField }" name="organizer_name">
+                <FormItem>
+                  <FormLabel class="text-sm">Organizer name</FormLabel>
+                  <FormControl>
+                    <Input placeholder="Château du Faune" v-bind="componentField" />
+                  </FormControl>
+                  <FormDescription class="text-xs">
+                    Ticket emails arrive from "Organizer name via {{ siteName }}".
+                  </FormDescription>
+                  <FormMessage />
+                </FormItem>
+              </FormField>
+
+              <FormField v-slot="{ componentField }" name="reply_to_email">
+                <FormItem>
+                  <FormLabel class="text-sm">Reply-to email</FormLabel>
+                  <FormControl>
+                    <Input type="email" inputmode="email" autocapitalize="none" placeholder="you@example.com" v-bind="componentField" />
+                  </FormControl>
+                  <FormDescription class="text-xs">
+                    Where attendee replies go. Leave blank to use your account email.
+                  </FormDescription>
+                  <FormMessage />
+                </FormItem>
+              </FormField>
             </CollapsibleContent>
           </Collapsible>
 

src/modules/events/types/ticket.ts

@@ -26,6 +26,12 @@ export interface EventExtra {
   nostr_notifications: boolean
   notification_subject: string
   notification_body: string
+  /** Shown as "<organizer_name> via <site>" in the From line of ticket
+   *  emails. Optional. */
+  organizer_name?: string
+  /** Reply-To for ticket emails; null/absent = the organizer's LNbits
+   *  account email. */
+  reply_to_email?: string | null
   /** Rails the organizer enabled (`lightning`, `fiat`). Empty / absent
    *  means the legacy rule: Lightning always, fiat iff `allow_fiat`.
    *  Same shape as upstream v2's `extra.payment_methods`. */