fix: 添加邮箱验证重发功能

- 登录时检测 403 错误（邮箱未验证）
- 显示重发验证邮件按钮
- 修复邮件发送失败时静默忽略的问题
- 添加 8 种语言的验证相关翻译

messages/de-DE.json

@@ -175,7 +175,12 @@
     "requestNewToken": "Neuen Reset-Link anfordern",
     "resetPasswordSuccess": "Passwort erfolgreich zurückgesetzt",
     "resetPasswordSuccessTitle": "Passwort-Zurücksetzung abgeschlossen",
-    "resetPasswordSuccessHint": "Ihr Passwort wurde erfolgreich zurückgesetzt. Sie können sich jetzt mit Ihrem neuen Passwort anmelden."
+    "resetPasswordSuccessHint": "Ihr Passwort wurde erfolgreich zurückgesetzt. Sie können sich jetzt mit Ihrem neuen Passwort anmelden.",
+    "emailNotVerified": "Bitte verifizieren Sie Ihre E-Mail-Adresse",
+    "emailNotVerifiedHint": "Ihre E-Mail-Adresse wurde nicht verifiziert. Bitte überprüfen Sie Ihren Posteingang oder fordern Sie eine neue Verifizierungs-E-Mail an.",
+    "resendVerification": "Verifizierungs-E-Mail erneut senden",
+    "resendSuccess": "Verifizierungs-E-Mail gesendet! Bitte überprüfen Sie Ihren Posteingang.",
+    "resendFailed": "Verifizierungs-E-Mail konnte nicht gesendet werden"
   },
   "memorize": {
     "deck_selector": {

messages/en-US.json

@@ -166,7 +166,12 @@
     "requestNewToken": "Request New Reset Link",
     "resetPasswordSuccess": "Password reset successfully",
     "resetPasswordSuccessTitle": "Password Reset Complete",
-    "resetPasswordSuccessHint": "Your password has been reset successfully. You can now log in with your new password."
+    "resetPasswordSuccessHint": "Your password has been reset successfully. You can now log in with your new password.",
+    "emailNotVerified": "Please verify your email address",
+    "emailNotVerifiedHint": "Your email has not been verified. Please check your inbox or request a new verification email.",
+    "resendVerification": "Resend Verification Email",
+    "resendSuccess": "Verification email sent! Please check your inbox.",
+    "resendFailed": "Failed to send verification email"
   },
   "memorize": {
     "deck_selector": {

messages/fr-FR.json

@@ -175,7 +175,12 @@
     "requestNewToken": "Demander un nouveau lien de réinitialisation",
     "resetPasswordSuccess": "Mot de passe réinitialisé avec succès",
     "resetPasswordSuccessTitle": "Réinitialisation du mot de passe terminée",
-    "resetPasswordSuccessHint": "Votre mot de passe a été réinitialisé avec succès. Vous pouvez maintenant vous connecter avec votre nouveau mot de passe."
+    "resetPasswordSuccessHint": "Votre mot de passe a été réinitialisé avec succès. Vous pouvez maintenant vous connecter avec votre nouveau mot de passe.",
+    "emailNotVerified": "Veuillez vérifier votre adresse e-mail",
+    "emailNotVerifiedHint": "Votre adresse e-mail n'a pas été vérifiée. Veuillez vérifier votre boîte de réception ou demander un nouvel e-mail de vérification.",
+    "resendVerification": "Renvoyer l'e-mail de vérification",
+    "resendSuccess": "E-mail de vérification envoyé ! Veuillez vérifier votre boîte de réception.",
+    "resendFailed": "Échec de l'envoi de l'e-mail de vérification"
   },
   "memorize": {
     "deck_selector": {

messages/it-IT.json

@@ -175,7 +175,12 @@
     "requestNewToken": "Richiedi Nuovo Link di Reset",
     "resetPasswordSuccess": "Password reimpostata con successo",
     "resetPasswordSuccessTitle": "Reimpostazione Password Completata",
-    "resetPasswordSuccessHint": "La tua password è stata reimpostata con successo. Ora puoi accedere con la tua nuova password."
+    "resetPasswordSuccessHint": "La tua password è stata reimpostata con successo. Ora puoi accedere con la tua nuova password.",
+    "emailNotVerified": "Verifica il tuo indirizzo email",
+    "emailNotVerifiedHint": "Il tuo indirizzo email non è stato verificato. Controlla la tua casella di posta o richiedi una nuova email di verifica.",
+    "resendVerification": "Invia di nuovo email di verifica",
+    "resendSuccess": "Email di verifica inviata! Controlla la tua casella di posta.",
+    "resendFailed": "Impossibile inviare l'email di verifica"
   },
   "memorize": {
     "deck_selector": {

messages/ja-JP.json

@@ -166,7 +166,12 @@
     "requestNewToken": "新しいリセットリンクをリクエスト",
     "resetPasswordSuccess": "パスワードのリセットに成功しました",
     "resetPasswordSuccessTitle": "パスワードリセット完了",
-    "resetPasswordSuccessHint": "パスワードが正常にリセットされました。新しいパスワードでログインできます。"
+    "resetPasswordSuccessHint": "パスワードが正常にリセットされました。新しいパスワードでログインできます。",
+    "emailNotVerified": "メールアドレスを確認してください",
+    "emailNotVerifiedHint": "メールアドレスが確認されていません。受信トレイをご確認いただくか、新しい確認メールをリクエストしてください。",
+    "resendVerification": "確認メールを再送信",
+    "resendSuccess": "確認メールを送信しました！受信トレイをご確認ください。",
+    "resendFailed": "確認メールの送信に失敗しました"
   },
   "memorize": {
     "deck_selector": {

messages/ko-KR.json

@@ -175,7 +175,12 @@
     "requestNewToken": "새 재설정 링크 요청",
     "resetPasswordSuccess": "비밀번호 재설정 성공",
     "resetPasswordSuccessTitle": "비밀번호 재설정 완료",
-    "resetPasswordSuccessHint": "비밀번호가 성공적으로 재설정되었습니다. 새 비밀번호로 로그인할 수 있습니다."
+    "resetPasswordSuccessHint": "비밀번호가 성공적으로 재설정되었습니다. 새 비밀번호로 로그인할 수 있습니다.",
+    "emailNotVerified": "이메일 주소를 인증해 주세요",
+    "emailNotVerifiedHint": "이메일이 인증되지 않았습니다. 받은 편지함을 확인하거나 새 인증 이메일을 요청해 주세요.",
+    "resendVerification": "인증 이메일 다시 보내기",
+    "resendSuccess": "인증 이메일이 발송되었습니다! 받은 편지함을 확인해 주세요.",
+    "resendFailed": "인증 이메일 발송에 실패했습니다"
   },
   "memorize": {
     "deck_selector": {

messages/ug-CN.json

@@ -175,7 +175,12 @@
     "requestNewToken": "يېڭى ئەسلىگە قايتۇرۇش ئۇلانمىسى سوراش",
     "resetPasswordSuccess": "پارول مۇۋەپپەقىيەتلىك ئەسلىگە قايتۇرۇلدى",
     "resetPasswordSuccessTitle": "پارول ئەسلىگە قايتۇرۇش تاماملاندى",
-    "resetPasswordSuccessHint": "پارولىڭىز مۇۋەپپەقىيەتلىك ئەسلىگە قايتۇرۇلدى. يېڭى پارول بىلەن كىرسىڭىز بولىدۇ."
+    "resetPasswordSuccessHint": "پارولىڭىز مۇۋەپپەقىيەتلىك ئەسلىگە قايتۇرۇلدى. يېڭى پارول بىلەن كىرسىڭىز بولىدۇ.",
+    "emailNotVerified": "ئېلخەت ئادرېسىڭىزنى دەلىللەڭ",
+    "emailNotVerifiedHint": "ئېلخەت ئادرېسىڭىز دەلىللەنمىگەن. ئېلخەت ساندۇقىڭىزنى تەكشۈرۈڭ ياكى يېڭى دەلىللەش ئېلخېتى سوراڭ.",
+    "resendVerification": "دەلىللەش ئېلخېتىنى قايتا ئەۋەتىش",
+    "resendSuccess": "دەلىللەش ئېلخېتى ئەۋەتىلدى! ئېلخەت ساندۇقىڭىزنى تەكشۈرۈڭ.",
+    "resendFailed": "دەلىللەش ئېلخېتى ئەۋەتىش مەغلۇپ بولدى"
   },
   "memorize": {
     "deck_selector": {

messages/zh-CN.json

@@ -166,7 +166,12 @@
     "requestNewToken": "重新申请重置链接",
     "resetPasswordSuccess": "密码重置成功",
     "resetPasswordSuccessTitle": "密码重置完成",
-    "resetPasswordSuccessHint": "您的密码已成功重置，现在可以使用新密码登录了。"
+    "resetPasswordSuccessHint": "您的密码已成功重置，现在可以使用新密码登录了。",
+    "emailNotVerified": "请验证您的邮箱地址",
+    "emailNotVerifiedHint": "您的邮箱尚未验证。请检查收件箱或重新发送验证邮件。",
+    "resendVerification": "重新发送验证邮件",
+    "resendSuccess": "验证邮件已发送！请检查您的收件箱。",
+    "resendFailed": "发送验证邮件失败"
   },
   "memorize": {
     "deck_selector": {

src/app/(auth)/login/page.tsx

@@ -8,7 +8,7 @@ import { toast } from "sonner";
 import { useTranslations } from "next-intl";
 import { Card, CardBody } from "@/design-system/base/card";
 import { Input } from "@/design-system/base/input";
-import { PrimaryButton } from "@/design-system/base/button";
+import { PrimaryButton, LinkButton } from "@/design-system/base/button";
 import { VStack } from "@/design-system/layout/stack";
 
 export default function LoginPage() {
@@ -16,6 +16,9 @@ export default function LoginPage() {
   const [username, setUsername] = useState("");
   const [password, setPassword] = useState("");
   const [loading, setLoading] = useState(false);
+  const [resendLoading, setResendLoading] = useState(false);
+  const [showResendOption, setShowResendOption] = useState(false);
+  const [unverifiedEmail, setUnverifiedEmail] = useState("");
 
   const searchParams = useSearchParams();
   const redirectTo = searchParams.get("redirect");
@@ -25,10 +28,31 @@ export default function LoginPage() {
 
   useEffect(() => {
     if (!isPending && session?.user?.username && !redirectTo) {
-      router.push("/folders");
+      router.push("/decks");
     }
   }, [session, isPending, router, redirectTo]);
 
+  const handleResendVerification = async () => {
+    if (!unverifiedEmail) return;
+    
+    setResendLoading(true);
+    try {
+      const { error } = await authClient.sendVerificationEmail({
+        email: unverifiedEmail,
+        callbackURL: "/login",
+      });
+      
+      if (error) {
+        toast.error(t("resendFailed"));
+      } else {
+        toast.success(t("resendSuccess"));
+        setShowResendOption(false);
+      }
+    } finally {
+      setResendLoading(false);
+    }
+  };
+
   const handleLogin = async () => {
     if (!username || !password) {
       toast.error(t("enterCredentials"));
@@ -36,6 +60,7 @@ export default function LoginPage() {
     }
 
     setLoading(true);
+    setShowResendOption(false);
     try {
       if (username.includes("@")) {
         const { error } = await authClient.signIn.email({
@@ -43,7 +68,13 @@ export default function LoginPage() {
           password: password,
         });
         if (error) {
+          if (error.status === 403) {
+            setUnverifiedEmail(username);
+            setShowResendOption(true);
+            toast.error(t("emailNotVerified"));
+          } else {
             toast.error(error.message ?? t("loginFailed"));
+          }
           return;
         }
       } else {
@@ -52,11 +83,15 @@ export default function LoginPage() {
           password: password,
         });
         if (error) {
+          if (error.status === 403) {
+            toast.error(t("emailNotVerified"));
+          } else {
             toast.error(error.message ?? t("loginFailed"));
+          }
           return;
         }
       }
-      router.push(redirectTo ?? "/folders");
+      router.push(redirectTo ?? "/decks");
     } finally {
       setLoading(false);
     }
@@ -91,6 +126,21 @@ export default function LoginPage() {
               {t("forgotPassword")}
             </Link>
             
+            {showResendOption && (
+              <div className="w-full p-3 bg-yellow-50 dark:bg-yellow-900/20 rounded-lg text-sm">
+                <p className="text-yellow-800 dark:text-yellow-200 mb-2">
+                  {t("emailNotVerifiedHint")}
+                </p>
+                <LinkButton 
+                  onClick={handleResendVerification}
+                  loading={resendLoading}
+                  size="sm"
+                >
+                  {t("resendVerification")}
+                </LinkButton>
+              </div>
+            )}
+            
             <PrimaryButton 
               onClick={handleLogin} 
               loading={loading}

src/auth.ts

@@ -18,21 +18,27 @@ export const auth = betterAuth({
     enabled: true,
     requireEmailVerification: true,
     sendResetPassword: async ({ user, url }) => {
-      void sendEmail({
+      const result = await sendEmail({
         to: user.email,
         subject: "重置您的密码 - Learn Languages",
         html: generateResetPasswordEmailHtml(url, user.name || "用户"),
       });
+      if (!result.success) {
+        console.error("[email] Failed to send reset password email:", result.error);
+      }
     },
   },
   emailVerification: {
     sendOnSignUp: true,
     sendVerificationEmail: async ({ user, url }) => {
-      void sendEmail({
+      const result = await sendEmail({
         to: user.email,
         subject: "验证您的邮箱 - Learn Languages",
         html: generateVerificationEmailHtml(url, user.name || "用户"),
       });
+      if (!result.success) {
+        console.error("[email] Failed to send verification email:", result.error);
+      }
     },
   },
   socialProviders: {