text: const mongoose = require("mongoose");
  const Budget = new mongoose.Schema({
    amount: {
      type: Number,
      required: true,
    },
    currency: {
      type: String,
      default: "₦",
    },
    trip: { type: mongoose.Schema.Types.ObjectId, ref: "Trip" },
    userId: { type: mongoose.Schema.Types.ObjectId, ref: "User" },
    createdAt: { type: Date, default: Date.now },
  });
  
  module.exports = mongoose.model("Budget", Budget);
  