feat: sync backend with frontend - add all UserEquity fields (brandIcon, brandIconImage, brandColor, platformType, hasUsedBenefit, benefit sub-fields, etc.) and new routes

src/models/VersionLog.js

@@ -0,0 +1,41 @@
+const mongoose = require('mongoose');
+
+const versionLogSchema = new mongoose.Schema({
+  version: {
+    type: String,
+    required: true,
+    trim: true
+  },
+  versionName: {
+    type: String,
+    default: ''
+  },
+  releaseDate: {
+    type: Date,
+    default: Date.now
+  },
+  features: [{
+    type: String
+  }],
+  fixes: [{
+    type: String
+  }],
+  improvements: [{
+    type: String
+  }],
+  isPublished: {
+    type: Boolean,
+    default: true
+  },
+  sortOrder: {
+    type: Number,
+    default: 0
+  }
+}, {
+  timestamps: true
+});
+
+versionLogSchema.index({ version: 1 });
+versionLogSchema.index({ isPublished: 1, sortOrder: -1 });
+
+module.exports = mongoose.model('VersionLog', versionLogSchema);