замечания 3

server/routers/procurement/models/Experience.js

@@ -0,0 +1,46 @@
+const mongoose = require('mongoose');
+
+const experienceSchema = new mongoose.Schema({
+  companyId: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: 'Company',
+    required: true,
+    index: true
+  },
+  confirmed: {
+    type: Boolean,
+    default: false
+  },
+  customer: {
+    type: String,
+    required: true
+  },
+  subject: {
+    type: String,
+    required: true
+  },
+  volume: {
+    type: String
+  },
+  contact: {
+    type: String
+  },
+  comment: {
+    type: String
+  },
+  createdAt: {
+    type: Date,
+    default: Date.now,
+    index: true
+  },
+  updatedAt: {
+    type: Date,
+    default: Date.now
+  }
+});
+
+// Индексы для оптимизации поиска
+experienceSchema.index({ companyId: 1, createdAt: -1 });
+
+module.exports = mongoose.model('Experience', experienceSchema);
+