Integrate AI voice assistant throughout the app for improved user experience

Adds voice control with speech recognition to App, TasksPage, and new VoiceShortcuts components using useVoiceIntegration hook.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ff0be73b-afdd-4747-978b-bb8301fb0a82
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/9777c70b-fc38-4831-8d6b-78dfffe041b0/e8e3b3ae-293b-4d28-8c9c-bd319f1aca2f.jpg

client/src/App.tsx

@@ -3,6 +3,7 @@ import { queryClient } from "./lib/queryClient";
 import { QueryClientProvider } from "@tanstack/react-query";
 import { Toaster } from "@/components/ui/toaster";
 import { TooltipProvider } from "@/components/ui/tooltip";
+import { FloatingVoiceControl } from "@/components/voice/FloatingVoiceControl";
 import { AuthProvider } from "@/context/AuthContext";
 import { ThemeProvider } from "@/context/ThemeContext";
 import { VoiceProvider } from "@/context/VoiceProvider";
@@ -50,6 +51,7 @@ function App() {
               <TooltipProvider>
                 <Toaster />
                 <Router />
+                <FloatingVoiceControl />
               </TooltipProvider>
             </VoiceProvider>
           </NotificationProvider>