feat: implement user authentication, profile management, and email verification with i18n support

Frontend-Learner/i18n/locales/en.json

@@ -113,10 +113,11 @@
     "updateError": "Failed to update profile",
     "passwordSuccess": "Password changed successfully",
     "passwordError": "Failed to change password",
-    "verifyEmail": "Verify Email",
+    "verifyEmail": "Please verify email",
     "verifyEmailSuccess": "Verification email sent successfully",
     "verifyEmailError": "Failed to send verification email",
-    "emailAlreadyVerified": "Your email is already verified"
+    "emailAlreadyVerified": "Your email is already verified",
+    "emailVerified": "Email Verified"
   },
   "userMenu": {
     "home": "Home",
@@ -133,7 +134,12 @@
   },
   "auth": {
     "login": "Log In",
-    "getStarted": "Get Started"
+    "getStarted": "Get Started",
+    "verifyingEmail": "Verifying Email...",
+    "emailVerified": "Email Verified Successfully!",
+    "emailVerifiedDesc": "Your account has been successfully verified.",
+    "invalidToken": "Invalid verification token",
+    "tokenExpired": "Token expired or invalid"
   },
   "language": {
     "label": "Language / ภาษา",
@@ -151,7 +157,9 @@
     "passwordTooShort": "At least 6 characters",
     "passwordsDoNotMatch": "Passwords do not match",
     "next": "Next",
-    "back": "Back"
+    "back": "Back",
+    "backToHome": "Back to Home",
+    "error": "Error"
   },
   "classroom": {
     "backToDashboard": "Back to My Courses",