Huge bunch of UI/UX improvements and tweaks!

server/models/member.js

@@ -181,6 +181,8 @@ const memberSchema = new mongoose.Schema({
   // Session revocation via token versioning
   tokenVersion: { type: Number, default: 0 },
 
+  memberNumber: { type: Number, unique: true, sparse: true },
+
   createdAt: { type: Date, default: Date.now },
   lastLogin: Date,
 });