backend/models/Memory.js

const mongoose = require('mongoose');

const memorySchema = new mongoose.Schema({
  userId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    required: true
  },
  content: {
    type: String,
    required: true
  },
  type: {
    type: String,
    enum: ['directive', 'fact'],
    default: 'fact'
  },
  createdAt: {
    type: Date,
    default: Date.now
  }
});

module.exports = mongoose.model('Memory', memorySchema);