Add a dedicated focus mode to help users enhance concentration and productivity

Implements FocusPage with Pomodoro timer, ambient sounds, and distraction blocking; adds route in App.tsx and sidebar link.

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/d79f2b79-df7a-44d0-b937-b161f4d6d0d7.jpg

client/src/i18n/locales/en.json

@@ -29,6 +29,7 @@
     "finances": "Finances",
     "professionals": "Professional Directory",
     "ai": "AI Assistant",
+    "focus": "Focus Mode",
     "voice": "Voice Commands",
     "analytics": "Analytics",
     "monitoring": "System Monitor",
@@ -136,6 +137,48 @@
     "conversationSaved": "Conversation saved",
     "noHistory": "No conversation history"
   },
+  "focus": {
+    "title": "Focus Mode",
+    "description": "Minimize distractions and maximize your productivity with our advanced focus tools.",
+    "startSession": "Start Focus Session",
+    "pauseSession": "Pause Session",
+    "resumeSession": "Resume Session",
+    "stopSession": "Stop Session",
+    "workSession": "Work Session",
+    "breakSession": "Break Session",
+    "sessionComplete": "Work session complete!",
+    "breakComplete": "Break time over!",
+    "settings": "Focus Settings",
+    "workDuration": "Work Duration",
+    "breakDuration": "Break Duration",
+    "longBreakDuration": "Long Break Duration",
+    "sessionsBeforeLongBreak": "Sessions Before Long Break",
+    "enableNotifications": "Enable Notifications",
+    "blockDistractions": "Block Distractions",
+    "ambientSounds": "Ambient Sounds",
+    "volume": "Volume",
+    "sessionHistory": "Session History",
+    "totalSessions": "Total Sessions",
+    "totalTime": "Total Time",
+    "features": {
+      "timer": "Pomodoro Timer",
+      "timerDesc": "Work in focused intervals with built-in breaks",
+      "ambient": "Ambient Sounds",
+      "ambientDesc": "Choose from nature sounds to enhance concentration",
+      "blocking": "Distraction Blocking",
+      "blockingDesc": "Block notifications and visual distractions",
+      "tracking": "Session Tracking",
+      "trackingDesc": "Monitor your focus patterns and productivity"
+    },
+    "sounds": {
+      "none": "No Sound",
+      "rain": "Rain",
+      "ocean": "Ocean Waves",
+      "forest": "Forest",
+      "cafe": "Cafe Ambience",
+      "whitenoise": "White Noise"
+    }
+  },
   "voice": {
     "title": "Voice Commands",
     "listening": "Listening...",