Switch to local PostgreSQL configuration and improve data handling

Migrates from Neon serverless to local PostgreSQL, fixes timestamp comparisons, and applies Node.js 18 compatibility fixes.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/142044c4-d937-4abb-ae50-83d9764cfb4d.jpg

attached_assets/Pasted--Node-js-18-compatibility-fix-applied-file-app-node-modules-neondatabase-serverless-index-mj-1752100176873_1752100176874.txt

@@ -0,0 +1,124 @@
+✅ Node.js 18 compatibility fix applied
+
+file:///app/node_modules/@neondatabase/serverless/index.mjs:1345
+
+o?t(o):n(u)},"cb"),s=new r(function(o,u){n=o,t=u}).catch(o=>{throw Error.captureStackTrace(
+
+                                                                         ^
+
+␍ErrorEvent {
+
+  [Symbol(kTarget)]: WebSocket {
+
+    _events: [Object: null prototype] {
+
+      error: [Function: onError] {
+
+        [Symbol(kIsForOnEventAttribute)]: false,
+
+        [Symbol(kListener)]: [Function (anonymous)]
+
+      },
+
+      message: [Function: onMessage] {
+
+        [Symbol(kIsForOnEventAttribute)]: false,
+
+        [Symbol(kListener)]: [Function (anonymous)]
+
+      },
+
+      close: [Function: onClose] {
+
+        [Symbol(kIsForOnEventAttribute)]: false,
+
+        [Symbol(kListener)]: [Function (anonymous)]
+
+      },
+
+      open: [Function: onOpen] {
+
+        [Symbol(kIsForOnEventAttribute)]: false,
+
+        [Symbol(kListener)]: [Function: handleWebSocketOpen]
+
+      }
+
+    },
+
+    _eventsCount: 4,
+
+    _maxListeners: undefined,
+
+    _binaryType: 'arraybuffer',
+
+    _closeCode: 1006,
+
+    _closeFrameReceived: false,
+
+    _closeFrameSent: false,
+
+    _closeMessage: Buffer(0) [Uint8Array] [],
+
+    _closeTimer: null,
+
+    _errorEmitted: true,
+
+    _extensions: {},
+
+    _paused: false,
+
+    _protocol: '',
+
+    _readyState: 3,
+
+    _receiver: null,
+
+    _sender: null,
+
+    _socket: null,
+
+    _bufferedAmount: 0,
+
+    _isServer: false,
+
+    _redirects: 0,
+
+    _autoPong: true,
+
+    _url: 'wss://regisflow-db/v2',
+
+    _req: null,
+
+    [Symbol(kCapture)]: false
+
+  },
+
+  [Symbol(kType)]: 'error',
+
+  [Symbol(kError)]: Error: connect ECONNREFUSED 172.22.0.2:443
+
+      at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1555:16) {
+
+    errno: -111,
+
+    code: 'ECONNREFUSED',
+
+    syscall: 'connect',
+
+    address: '172.22.0.2',
+
+    port: 443
+
+  },
+
+  [Symbol(kMessage)]: 'connect ECONNREFUSED 172.22.0.2:443'
+
+}
+
+Node.js v18.20.8
+
+
+      
+      
+