feat: add calendar event deletion with confirmation

app/api/calendar/route.ts

@@ -145,3 +145,31 @@ export async function POST(req: Request) {
     return NextResponse.json({ error: err.message || 'Failed to create event' }, { status: 500 })
   }
 }
+
+export async function DELETE(req: Request) {
+  const { searchParams } = new URL(req.url)
+  const eventId = searchParams.get('eventId')
+  const calendarId = searchParams.get('calendarId')
+
+  if (!eventId) {
+    return NextResponse.json({ error: 'eventId is required' }, { status: 400 })
+  }
+
+  const auth = getAuth(false)
+  if (!auth) {
+    return NextResponse.json({ error: 'not_configured' }, { status: 500 })
+  }
+
+  const targetCalendarId = calendarId || process.env.DANIIL_CALENDAR_ID || 'daniilklimov25@gmail.com'
+  const calendarClient = google.calendar({ version: 'v3', auth: auth as any })
+
+  try {
+    await calendarClient.events.delete({
+      calendarId: targetCalendarId,
+      eventId,
+    })
+    return NextResponse.json({ success: true })
+  } catch (err: any) {
+    return NextResponse.json({ error: err.message || 'Failed to delete event' }, { status: 500 })
+  }
+}