Implemented mailbox in ConsoleUI

PostFundManagement.ConsoleUI/src/components/layout/AppLayout.tsx

@@ -1,6 +1,8 @@
 import React, { useState } from 'react';
 import { NavLink, Outlet, useNavigate, Link } from 'react-router-dom';
+import { NotificationBell } from './NotificationBell';
 import {
+  Inbox,
   LayoutDashboard,
   Building2,
   FolderKanban,
@@ -121,6 +123,12 @@ const navItems: NavItem[] = [
     help: 'Multi-tenant partition directory, organizational onboarding, status lifecycle controls, and system-wide isolation boundaries.',
     claim: 'tenant_management',
   },
+  {
+    name: 'Mailbox & Inbox',
+    path: '/inbox',
+    icon: Inbox,
+    help: 'In-app notifications, communications, deliverable messages, drafts, and replies across active tenant users.',
+  },
   {
     name: 'Settings & Communications',
     path: '/settings',
@@ -525,6 +533,8 @@ export const AppLayout: React.FC = () => {
 
           {/* User Profile and Controls */}
           <div className="relative flex items-center gap-3">
+            {/* Notification Bell in close proximity to username */}
+            <NotificationBell />
             <div className="text-right hidden sm:block">
               <div className="flex items-center justify-end gap-1.5">
                 <p className="text-xs font-semibold text-white truncate max-w-[150px]" title={tokenUserName}>
@@ -562,6 +572,14 @@ export const AppLayout: React.FC = () => {
                   <p className="text-[10px] text-slate-400 mt-1">Role: <strong className="text-blue-300">{userRole}</strong></p>
                 </div>
 
+                <Link
+                  to="/inbox"
+                  onClick={() => setUserMenuOpen(false)}
+                  className="flex items-center gap-2 px-3 py-2 text-xs text-slate-300 hover:text-white hover:bg-slate-800/60 rounded-xl transition"
+                >
+                  <Inbox className="w-3.5 h-3.5 text-blue-400" />
+                  <span>In-App Mailbox</span>
+                </Link>
                 <Link
                   to="/"
                   onClick={() => setUserMenuOpen(false)}