Introduce messaging feature allowing users to communicate with contacts

Implements a new ChatPage component with WebSocket for real-time messaging.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: c5f0c281-8dd8-4846-b452-4a07bcd21062
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/9777c70b-fc38-4831-8d6b-78dfffe041b0/9d44895d-6eba-4363-a24d-e3722f77b5e9.jpg

client/src/App.tsx

@@ -27,6 +27,7 @@ import SettingsPage from "@/pages/SettingsPage";
 import FocusPage from "@/pages/FocusPage";
 import ThemePage from "@/pages/ThemePage";
 import BenchmarkPage from "@/pages/BenchmarkPage";
+import ChatPage from "@/pages/ChatPage";
 import NotFound from "@/pages/not-found";
 
 function Router() {
@@ -45,6 +46,7 @@ function Router() {
       <Route path="/monitoring" component={SystemMonitoringPage} />
       <Route path="/focus" component={FocusPage} />
       <Route path="/themes" component={ThemePage} />
+      <Route path="/chat" component={ChatPage} />
       <Route path="/settings" component={SettingsPage} />
       <Route path="/professionals" component={ProfessionalDirectory} />
       <Route component={NotFound} />

client/src/i18n/locales/en.json

@@ -34,6 +34,7 @@
     "voice": "Voice Commands",
     "analytics": "Analytics",
     "monitoring": "System Monitor",
+    "chat": "Messages",
     "settings": "Settings",
     "logout": "Logout",
     "profile": "Profile"
@@ -70,6 +71,44 @@
     "taskUpdated": "Task updated successfully",
     "taskDeleted": "Task deleted successfully"
   },
+  "chat": {
+    "title": "Messages",
+    "searchPlaceholder": "Search conversations...",
+    "professionalServices": "Professional Services",
+    "typeMessage": "Type a message...",
+    "welcome": "Welcome to Messages",
+    "welcomeDescription": "Select a conversation to start messaging with your contacts and professional service providers.",
+    "selectedChat": "Selected Contact",
+    "lastSeen": "Last seen",
+    "minutesAgo": "minutes ago",
+    "noMessages": "No messages yet",
+    "edited": "edited",
+    "online": "Online",
+    "offline": "Offline",
+    "newContact": "Add Contact",
+    "newGroup": "New Group",
+    "callContact": "Call",
+    "videoCall": "Video Call",
+    "moreOptions": "More Options",
+    "messageStatus": {
+      "sent": "Sent",
+      "delivered": "Delivered", 
+      "read": "Read"
+    },
+    "messageTypes": {
+      "text": "Text",
+      "image": "Image",
+      "document": "Document",
+      "voice": "Voice Message",
+      "video": "Video",
+      "location": "Location"
+    },
+    "attachments": "Attachments",
+    "voiceMessage": "Voice Message",
+    "sendMessage": "Send Message",
+    "today": "Today",
+    "yesterday": "Yesterday"
+  },
   "finances": {
     "title": "Finances",
     "overview": "Financial Overview",