Add voice AI capabilities and trial options to landing page

Implements i18n for voice commands, adds AI features and trial buttons to LandingPage.tsx, and updates ar.json/en.json.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 5a4f78b4-6a2e-4391-b005-5544e086dac8
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/9777c70b-fc38-4831-8d6b-78dfffe041b0/5512ebaf-680c-4b63-86d3-0a733fc165c0.jpg

client/src/i18n/locales/en.json

@@ -321,7 +321,38 @@
     "taskManagement": "Task Management",
     "taskManagementDesc": "Voice-powered task creation",
     "financialTracking": "Financial Tracking", 
-    "financialTrackingDesc": "Automated expense logging"
+    "financialTrackingDesc": "Automated expense logging",
+    "startFreeTrial": "Start Free Trial",
+    "viewDemo": "View Demo",
+    "tryVoiceCommands": "Try Voice Commands",
+    "stopListening": "Stop Listening",
+    "startVoiceDemo": "Start Voice Demo",
+    "trySaying": "Try saying:",
+    "createTaskExample": "Create a task to review budget",
+    "addExpenseExample": "Add $50 expense for groceries",
+    "showScheduleExample": "Show me today's schedule",
+    "completeOfflineVoiceAI": "Complete Offline Voice AI",
+    "enterpriseGradeDesc": "Enterprise-grade task and financial management with local AI processing",
+    "localAIModels": "Local AI Models",
+    "localAIDesc": "Speech-to-text and text-to-speech processing entirely offline. No data leaves your premises.",
+    "baseModelsIncluded": "Base models included",
+    "swappableArchitecture": "Swappable model architecture",
+    "voiceTaskCreation": "Voice Task Creation",
+    "voiceTaskDesc": "Create, update, and manage tasks using natural voice commands with intelligent parsing.",
+    "naturalLanguageProcessing": "Natural language processing",
+    "smartDateExtraction": "Smart date/time extraction",
+    "voiceFinancialTracking": "Voice Financial Tracking",
+    "voiceFinancialDesc": "Record expenses and income through voice with automatic categorization and receipt parsing.",
+    "autoCategorization": "Auto-categorization",
+    "receiptOCR": "Receipt OCR integration",
+    "completePrivacy": "Complete Privacy",
+    "privacyDesc": "All voice processing happens locally. Zero cloud dependencies, complete data sovereignty.",
+    "onPremiseDeployment": "On-premise deployment",
+    "encryptedStorage": "Encrypted local storage",
+    "realTimeProcessing": "Real-time Processing",
+    "realTimeDesc": "Instant voice-to-text conversion and immediate AI responses for seamless interaction.",
+    "subSecondResponse": "Sub-second response time",
+    "continuousListening": "Continuous listening mode"
   },
   "dashboard": {
     "title": "Dashboard",