feat(events): calendar popup respects the selected category filter

The date-picker popup showed dots for all events regardless of the
active category filter. Feed it a category-filtered set so its per-day
dots reflect what the user is browsing (temporal/day filters still don't
apply — the calendar is for picking any date). No categories selected
behaves as before (all events).

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

src/modules/events/views/EventsPage.vue

@@ -61,6 +61,18 @@ const {
 const filtersOpen = ref(false)
 const calendarOpen = ref(false)
 
+// Events feeding the calendar popup's per-day dots. Respects the active
+// category filter (so the calendar reflects what the user is browsing),
+// but not the temporal/day filters — the calendar is for picking any
+// date. No categories selected ⇒ all events.
+const calendarEvents = computed(() =>
+  selectedCategories.value.length
+    ? allEvents.value.filter(
+        (e) => e.category && selectedCategories.value.includes(e.category),
+      )
+    : allEvents.value,
+)
+
 // Human label for the active day filter, shown as a removable chip.
 const selectedDateLabel = computed(() =>
   selectedDate.value
@@ -255,7 +267,7 @@ onBeforeRouteLeave(() => {
          day filters the feed to it and closes. -->
     <EventCalendarPopup
       v-model:open="calendarOpen"
-      :events="allEvents"
+      :events="calendarEvents"
       :title="t('events.nav.calendar', 'Calendar')"
       :description="t('events.calendar.pickDay', 'Pick a day to see its events')"
       @select-date="onSelectDate"