Add migration for libraryReferences trashedAt indexes

GitOrigin-RevId: 4a850c11560df3ae3053fbc66048b083e750b8d3

tools/migrations/20260722120000_create_libraryReferences_trashedAt_indexes.mjs

@@ -0,0 +1,36 @@
+import Helpers from './lib/helpers.mjs'
+
+const tags = ['auxiliary']
+
+// Two partial indexes (docs without trashedAt are not indexed) supporting the
+// soft-delete (trash) feature
+//   - userId_1_trashedAt_1__id_1 serves the per-user trash listing/search,
+//   - trashedAt_1 serves the daily expiry cron's cross-user
+const newIndexes = [
+  {
+    key: { userId: 1, trashedAt: 1, _id: 1 },
+    name: 'userId_1_trashedAt_1__id_1',
+    partialFilterExpression: { trashedAt: { $exists: true } },
+  },
+  {
+    key: { trashedAt: 1 },
+    name: 'trashedAt_1',
+    partialFilterExpression: { trashedAt: { $exists: true } },
+  },
+]
+
+const migrate = async client => {
+  const { db } = client
+  await Helpers.addIndexesToCollection(db.libraryReferences, newIndexes)
+}
+
+const rollback = async client => {
+  const { db } = client
+  await Helpers.dropIndexesFromCollection(db.libraryReferences, newIndexes)
+}
+
+export default {
+  tags,
+  migrate,
+  rollback,
+}