Agenda refactor

lib/services/microsoft-calendar-sync.ts

@@ -1082,6 +1082,35 @@ export async function syncMicrosoftCalendar(
       }
     }
 
+    // Delete events that are no longer in Microsoft calendar
+    // Build a set of all Microsoft event IDs we just synced
+    const syncedMicrosoftIds = new Set<string>();
+    for (const caldavEvent of caldavEvents) {
+      if (caldavEvent.uid) {
+        syncedMicrosoftIds.add(caldavEvent.uid);
+      }
+    }
+
+    // Find events in DB that have externalEventId but are not in the synced list
+    // Only delete events that have an externalEventId (to avoid deleting manually created events)
+    for (const existingEvent of existingEvents) {
+      const externalId = (existingEvent as any).externalEventId;
+      if (externalId && !syncedMicrosoftIds.has(externalId)) {
+        // This event exists in DB but not in Microsoft - it was deleted in Microsoft
+        logger.info('Deleting event that no longer exists in Microsoft', {
+          eventId: existingEvent.id,
+          title: existingEvent.title,
+          externalEventId: externalId,
+        });
+        
+        await prisma.event.delete({
+          where: { id: existingEvent.id },
+        });
+        
+        deleted++;
+      }
+    }
+
     // Update sync timestamp
     await prisma.calendarSync.update({
       where: { id: calendarSyncId },