Vastly improved new character UX

Characters now can limit which libraries they allow

app/imports/api/library/getUserLibraryIds.js

@@ -0,0 +1,31 @@
+import LibraryCollections from '/imports/api/library/LibraryCollections.js';
+import Libraries from '/imports/api/library/Libraries.js';
+import { union } from 'lodash';
+
+export default function getUserLibraryIds(userId) {
+  if (!userId) return [];
+  const user = Meteor.users.findOne(userId);
+  let subbedIds = user?.subscribedLibraries || [];
+  const subCollections = user?.subscribedLibraryCollections || [];
+  LibraryCollections.find({
+    $or: [
+      { owner: userId },
+      { writers: userId },
+      { readers: userId },
+      { _id: { $in: subCollections }, public: true },
+    ]
+  }, { fields: { libraries: 1 } }).forEach(collection => {
+    subbedIds = union(subbedIds, collection.libraries);
+  });
+  const libraryIds = Libraries.find({
+    $or: [
+      { owner: userId },
+      { writers: userId },
+      { readers: userId },
+      { _id: { $in: subbedIds }, public: true },
+    ]
+  }, {
+    fields: { _id: 1 }
+  }).map(lib => lib._id);
+  return libraryIds;
+}