feat: add waitlist module, quick payment/transaction edit, and catering fee deduction from professor share

components/payments/paymentModel.js

@@ -42,9 +42,15 @@ const paymentSchema = new mongoose.Schema({
   },
   status: {
     type: String,
-    enum: ['pending', 'partial', 'paid', 'overdue'],
+    enum: ['pending', 'partial', 'paid', 'overdue', 'cancelled', 'reverted'],
     default: 'pending'
   },
+  type: {
+    type: String,
+    enum: ['regular', 'waiting_list'],
+    default: 'regular',
+    index: true
+  },
   notes: { type: String, trim: true, maxlength: 5000 },
   isDeleted: {
     type: Boolean,
@@ -72,6 +78,9 @@ paymentSchema.virtual('transactions', {
 paymentSchema.pre('save', function (next) {
   this.discount = normalizeDiscount(this.discount, this.amount);
   const payable = getPayableAmount(this);
+  if (this.status === 'cancelled' || this.status === 'reverted') {
+    return next();
+  }
   if (this.paidAmount >= payable) {
     this.status = 'paid';
   } else if (this.paidAmount > 0) {