Replace toast notifications and reconciliation module for improved stability

Replace the existing toast notification system and the BL Reconciliation module with robust, independent implementations to resolve React errors and improve performance.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: b163d4c0-de5e-4f4e-a9c0-aed4c7049718
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/b163d4c0-de5e-4f4e-a9c0-aed4c7049718/l61v0JT

client/src/components/ToasterRobust.tsx

@@ -0,0 +1,62 @@
+import { useToast } from "@/hooks/use-toast-robust";
+import { X, CheckCircle, AlertCircle, XCircle } from "lucide-react";
+
+export function ToasterRobust() {
+  const { toasts, dismiss } = useToast();
+
+  if (toasts.length === 0) return null;
+
+  return (
+    <div className="fixed top-4 right-4 z-[100] flex max-h-screen w-full max-w-[420px] flex-col-reverse gap-2">
+      {toasts.map((toast) => {
+        const variants = {
+          default: {
+            container: "border border-blue-200 bg-blue-50 text-blue-900",
+            icon: <CheckCircle className="h-5 w-5 text-blue-600" />
+          },
+          success: {
+            container: "border border-green-200 bg-green-50 text-green-900",
+            icon: <CheckCircle className="h-5 w-5 text-green-600" />
+          },
+          destructive: {
+            container: "border border-red-200 bg-red-50 text-red-900",
+            icon: <XCircle className="h-5 w-5 text-red-600" />
+          }
+        };
+
+        const variant = variants[toast.variant || "default"];
+
+        return (
+          <div
+            key={toast.id}
+            className={`group pointer-events-auto relative flex w-full items-start space-x-3 overflow-hidden rounded-lg p-4 shadow-lg transition-all duration-200 ${variant.container}`}
+          >
+            <div className="flex-shrink-0">
+              {variant.icon}
+            </div>
+            
+            <div className="flex-1 min-w-0">
+              {toast.title && (
+                <div className="text-sm font-medium">
+                  {toast.title}
+                </div>
+              )}
+              {toast.description && (
+                <div className="mt-1 text-sm opacity-90">
+                  {toast.description}
+                </div>
+              )}
+            </div>
+            
+            <button
+              onClick={() => dismiss(toast.id)}
+              className="flex-shrink-0 ml-3 inline-flex text-gray-400 hover:text-gray-600 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-gray-500 transition-colors"
+            >
+              <X className="h-4 w-4" />
+            </button>
+          </div>
+        );
+      })}
+    </div>
+  );
+}