fix(frontend): sync with main and finalize i18n & component optimizations

frontend/src/views/admin/RedeemView.vue

@@ -140,7 +140,7 @@
                     : 'badge-danger'
               ]"
             >
-              {{ t('admin.redeem.statuses.' + value) }}
+              {{ t('admin.redeem.status.' + value) }}
             </span>
           </template>
 

frontend/src/views/admin/SettingsView.vue

@@ -240,7 +240,7 @@
                       href="https://dash.cloudflare.com/"
                       target="_blank"
                       class="text-primary-600 hover:text-primary-500"
-                      >Cloudflare Dashboard</a
+                      >{{ t('admin.settings.turnstile.cloudflareDashboard') }}</a
                     >
                   </p>
                 </div>

frontend/src/views/auth/LoginView.vue

@@ -295,12 +295,12 @@ function onTurnstileVerify(token: string): void {
 
 function onTurnstileExpire(): void {
   turnstileToken.value = ''
-  errors.turnstile = 'Verification expired, please try again'
+  errors.turnstile = t('auth.turnstileExpired')
 }
 
 function onTurnstileError(): void {
   turnstileToken.value = ''
-  errors.turnstile = 'Verification failed, please try again'
+  errors.turnstile = t('auth.turnstileFailed')
 }
 
 // ==================== Validation ====================
@@ -315,25 +315,25 @@ function validateForm(): boolean {
 
   // Email validation
   if (!formData.email.trim()) {
-    errors.email = 'Email is required'
+    errors.email = t('auth.emailRequired')
     isValid = false
   } else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(formData.email)) {
-    errors.email = 'Please enter a valid email address'
+    errors.email = t('auth.invalidEmail')
     isValid = false
   }
 
   // Password validation
   if (!formData.password) {
-    errors.password = 'Password is required'
+    errors.password = t('auth.passwordRequired')
     isValid = false
   } else if (formData.password.length < 6) {
-    errors.password = 'Password must be at least 6 characters'
+    errors.password = t('auth.passwordMinLength')
     isValid = false
   }
 
   // Turnstile validation
   if (turnstileEnabled.value && !turnstileToken.value) {
-    errors.turnstile = 'Please complete the verification'
+    errors.turnstile = t('auth.completeVerification')
     isValid = false
   }
 
@@ -362,7 +362,7 @@ async function handleLogin(): Promise<void> {
     })
 
     // Show success toast
-    appStore.showSuccess('Login successful! Welcome back.')
+    appStore.showSuccess(t('auth.loginSuccess'))
 
     // Redirect to dashboard or intended route
     const redirectTo = (router.currentRoute.value.query.redirect as string) || '/dashboard'
@@ -382,7 +382,7 @@ async function handleLogin(): Promise<void> {
     } else if (err.message) {
       errorMessage.value = err.message
     } else {
-      errorMessage.value = 'Login failed. Please check your credentials and try again.'
+      errorMessage.value = t('auth.loginFailed')
     }
 
     // Also show error toast

frontend/src/views/auth/RegisterView.vue

@@ -340,12 +340,12 @@ function onTurnstileVerify(token: string): void {
 
 function onTurnstileExpire(): void {
   turnstileToken.value = ''
-  errors.turnstile = 'Verification expired, please try again'
+  errors.turnstile = t('auth.turnstileExpired')
 }
 
 function onTurnstileError(): void {
   turnstileToken.value = ''
-  errors.turnstile = 'Verification failed, please try again'
+  errors.turnstile = t('auth.turnstileFailed')
 }
 
 // ==================== Validation ====================
@@ -365,25 +365,25 @@ function validateForm(): boolean {
 
   // Email validation
   if (!formData.email.trim()) {
-    errors.email = 'Email is required'
+    errors.email = t('auth.emailRequired')
     isValid = false
   } else if (!validateEmail(formData.email)) {
-    errors.email = 'Please enter a valid email address'
+    errors.email = t('auth.invalidEmail')
     isValid = false
   }
 
   // Password validation
   if (!formData.password) {
-    errors.password = 'Password is required'
+    errors.password = t('auth.passwordRequired')
     isValid = false
   } else if (formData.password.length < 6) {
-    errors.password = 'Password must be at least 6 characters'
+    errors.password = t('auth.passwordMinLength')
     isValid = false
   }
 
   // Turnstile validation
   if (turnstileEnabled.value && !turnstileToken.value) {
-    errors.turnstile = 'Please complete the verification'
+    errors.turnstile = t('auth.completeVerification')
     isValid = false
   }
 
@@ -429,7 +429,7 @@ async function handleRegister(): Promise<void> {
     })
 
     // Show success toast
-    appStore.showSuccess('Account created successfully! Welcome to ' + siteName.value + '.')
+    appStore.showSuccess(t('auth.accountCreatedSuccess', { siteName: siteName.value }))
 
     // Redirect to dashboard
     await router.push('/dashboard')
@@ -448,7 +448,7 @@ async function handleRegister(): Promise<void> {
     } else if (err.message) {
       errorMessage.value = err.message
     } else {
-      errorMessage.value = 'Registration failed. Please try again.'
+      errorMessage.value = t('auth.registrationFailed')
     }
 
     // Also show error toast

frontend/src/views/user/RedeemView.vue

@@ -500,7 +500,7 @@ const getHistoryItemTitle = (item: RedeemHistoryItem) => {
   } else if (item.type === 'subscription') {
     return t('redeem.subscriptionAssigned')
   }
-  return 'Unknown'
+  return t('common.unknown')
 }
 
 const formatHistoryValue = (item: RedeemHistoryItem) => {

frontend/src/views/user/SubscriptionsView.vue

@@ -279,7 +279,7 @@ async function loadSubscriptions() {
     subscriptions.value = await subscriptionsAPI.getMySubscriptions()
   } catch (error) {
     console.error('Failed to load subscriptions:', error)
-    appStore.showError('Failed to load subscriptions')
+    appStore.showError(t('userSubscriptions.failedToLoad'))
   } finally {
     loading.value = false
   }