feat: unified portal server, single database migration & railway configuration

WebGIS_ChloroplethData_ImportGeoJSON_FromArcMap/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "webgis_chloropleth",
+  "version": "1.0.0",
+  "description": "Static WebGIS Chloropleth app wrapped in an Express server",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "express": "^5.2.1"
+  }
+}

WebGIS_ChloroplethData_ImportGeoJSON_FromArcMap/server.js

@@ -0,0 +1,10 @@
+const express = require('express');
+const path = require('path');
+const app = express();
+
+app.use(express.static(__dirname));
+
+const PORT = process.env.PORT || 3000;
+app.listen(PORT, () => {
+    console.log(`WebGIS Chloropleth static server running on port ${PORT}`);
+});