feat: complete implementation of dynamic GlobeMap coordinates, TDD workflow, and UI/UX enhancements

backend/db/mongoose.js

@@ -0,0 +1,27 @@
+const mongoose = require('mongoose');
+const path = require('path');
+require('dotenv').config({ path: path.join(__dirname, '../../.env.local') });
+
+const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://127.0.0.1:27017/backone_dpi';
+
+async function connectDB() {
+  try {
+    if (mongoose.connection.readyState >= 1) return;
+    await mongoose.connect(MONGODB_URI, { serverSelectionTimeoutMS: 2000 });
+    console.log('[MongoDB] Connected successfully');
+  } catch (error) {
+    console.error('[MongoDB] Connection failed, switching to In-Memory DB:', error.message);
+    try {
+      const { MongoMemoryServer } = require('mongodb-memory-server');
+      const mongod = await MongoMemoryServer.create();
+      const uri = mongod.getUri();
+      await mongoose.connect(uri, {});
+      console.log('[MongoDB] Connected successfully to Virtual Memory Database!');
+    } catch (memErr) {
+      console.error('[MongoDB] Memory DB failed:', memErr.message);
+    }
+  }
+}
+
+module.exports = connectDB;
+