feat(calendar): add overlapping layout and event attachments

server/db-schema-test.js

@@ -419,6 +419,12 @@ const MIGRATIONS_SQL = {
     CREATE INDEX IF NOT EXISTS idx_family_documents_created_by ON family_documents(created_by);
     CREATE INDEX IF NOT EXISTS idx_family_document_access_user ON family_document_access(user_id);
   `,
+  20: `
+    ALTER TABLE calendar_events ADD COLUMN attachment_name TEXT;
+    ALTER TABLE calendar_events ADD COLUMN attachment_mime TEXT;
+    ALTER TABLE calendar_events ADD COLUMN attachment_size INTEGER;
+    ALTER TABLE calendar_events ADD COLUMN attachment_data TEXT;
+  `,
 };
 
 export { MIGRATIONS_SQL };