feat(events): add reusable calendar date-picker popup

Add a pickerMode to EventCalendarView (month grid only, emits selectDate
on every day tap, no selected-day events panel) and a new
EventCalendarPopup dialog wrapping it. Picking a day emits the date and
closes. Groundwork for replacing the standalone calendar page with an
on-feed date-picker popup and a My-Tickets event-date visual.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/modules/events/components/EventCalendarPopup.vue

@@ -0,0 +1,49 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogDescription,
+} from '@/components/ui/dialog'
+import EventCalendarView from './EventCalendarView.vue'
+import type { Event } from '../types/event'
+
+// A date-picker popup: the month grid (with per-day event dots) in a
+// dialog. Picking a day emits selectDate and closes. Reused by the feed
+// (filter to a day) and My Tickets (visualise the user's event dates).
+const props = defineProps<{
+  open: boolean
+  events: Event[]
+  title: string
+  description: string
+}>()
+
+const emit = defineEmits<{
+  'update:open': [value: boolean]
+  selectDate: [date: Date]
+}>()
+
+const isOpen = computed({
+  get: () => props.open,
+  set: (v) => emit('update:open', v),
+})
+
+function onSelectDate(date: Date) {
+  emit('selectDate', date)
+  isOpen.value = false
+}
+</script>
+
+<template>
+  <Dialog v-model:open="isOpen">
+    <DialogContent class="max-w-sm">
+      <DialogHeader>
+        <DialogTitle>{{ title }}</DialogTitle>
+        <DialogDescription>{{ description }}</DialogDescription>
+      </DialogHeader>
+      <EventCalendarView :events="events" picker-mode @select-date="onSelectDate" />
+    </DialogContent>
+  </Dialog>
+</template>

src/modules/events/components/EventCalendarView.vue

@@ -12,6 +12,10 @@ import type { Event } from '../types/event'
 
 const props = defineProps<{
   events: Event[]
+  /** When true, render only the month grid for date-picking — no
+   *  selected-day events panel — and emit selectDate on every day tap
+   *  (used inside the calendar popup). */
+  pickerMode?: boolean
 }>()
 
 const emit = defineEmits<{
@@ -77,6 +81,12 @@ const selectedDayEvents = computed(() => {
 })
 
 function selectDay(date: Date) {
+  // Picker mode: every tap selects + emits (parent closes the popup).
+  if (props.pickerMode) {
+    selectedDay.value = date
+    emit('selectDate', date)
+    return
+  }
   if (selectedDay.value && isSameDay(selectedDay.value, date)) {
     selectedDay.value = null
   } else {
@@ -147,8 +157,9 @@ function nextMonth() {
       </button>
     </div>
 
-    <!-- Selected day events -->
-    <div v-if="selectedDay" class="border-t pt-4 space-y-2">
+    <!-- Selected day events (hidden in picker mode — the popup just
+         picks a day and closes). -->
+    <div v-if="selectedDay && !pickerMode" class="border-t pt-4 space-y-2">
       <h3 class="text-sm font-medium text-muted-foreground">
         {{ format(selectedDay, 'EEEE, MMMM d', { locale: dateLocale }) }}
         <span v-if="selectedDayEvents.length > 0" class="ml-1">