Enhance sidebar menu to support multiple languages for better accessibility

Implement i18n for Sidebar.tsx and add translations for "navigation" and "management" in ar.json and en.json.

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-78dfffe041b0/9a425c2c-163d-44cd-bc94-651bb15ed83f.jpg

client/src/i18n/locales/ar.json

@@ -19,17 +19,19 @@
     "close": "إغلاق",
     "open": "فتح",
     "yes": "نعم",
-    "no": "لا"
+    "no": "لا",
+    "navigation": "التنقل",
+    "management": "الإدارة"
   },
   "navigation": {
     "dashboard": "لوحة التحكم",
     "tasks": "المهام",
     "finances": "الماليات",
+    "professionals": "الدليل المهني",
     "ai": "المساعد الذكي",
-    "voice": "الصوت",
+    "voice": "الأوامر الصوتية",
     "analytics": "التحليلات",
     "monitoring": "مراقبة النظام",
-    "professionals": "الدليل المهني",
     "settings": "الإعدادات",
     "logout": "تسجيل الخروج",
     "profile": "الملف الشخصي"