fix(i18n): replace useTranslation with useLazyTranslation in Base64Converter

Fix missing translations by ensuring base64Converter namespace is dynamically loaded.

pages/Base64Converter/Base64ConverterSection.tsx

@@ -1,6 +1,6 @@
 import { Image as ImageIcon, Trash2, Upload } from 'lucide-react';
 import TextInputArea from '@/components/TextInputArea';
-import { useTranslation } from 'react-i18next';
+import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import CopyButton from '@/components/CopyButton';
 import DecodeResultPaper from '@/components/DecodeResultPaper';
 import { Button } from '@/components/ui/button';
@@ -19,7 +19,7 @@ interface Base64ConverterSectionProps {
 }
 
 export default function Base64ConverterSection({ mode }: Base64ConverterSectionProps) {
-  const { t } = useTranslation('base64Converter');
+  const { t } = useLazyTranslation('base64Converter');
 
   const [direction, setDirection] = useStorageState(
     `base64Converter/${mode}Mode/direction`,

pages/Base64Converter/FileMode.tsx

@@ -1,6 +1,6 @@
 import { Trash2, Upload } from 'lucide-react';
 import TextInputArea from '@/components/TextInputArea';
-import { useTranslation } from 'react-i18next';
+import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import CopyButton from '@/components/CopyButton';
 import DecodeResultPaper from '@/components/DecodeResultPaper';
 import { Button } from '@/components/ui/button';
@@ -15,7 +15,7 @@ const isValidDirection = (val: unknown): val is Base64ConvertDirection =>
   val === 'encode' || val === 'decode';
 
 export default function FileMode() {
-  const { t } = useTranslation('base64Converter');
+  const { t } = useLazyTranslation('base64Converter');
   const [direction, setDirection] = useStorageState(
     'base64Converter/fileMode/direction',
     'encode',

pages/Base64Converter/ImageMode.tsx

@@ -1,6 +1,6 @@
 import { Image as ImageIcon, Trash2 } from 'lucide-react';
 import TextInputArea from '@/components/TextInputArea';
-import { useTranslation } from 'react-i18next';
+import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import CopyButton from '@/components/CopyButton';
 import DecodeResultPaper from '@/components/DecodeResultPaper';
 import { Button } from '@/components/ui/button';
@@ -15,7 +15,7 @@ const isValidDirection = (val: unknown): val is Base64ConvertDirection =>
   val === 'encode' || val === 'decode';
 
 export default function ImageMode() {
-  const { t } = useTranslation('base64Converter');
+  const { t } = useLazyTranslation('base64Converter');
   const [direction, setDirection] = useStorageState(
     'base64Converter/imageMode/direction',
     'encode',

pages/Base64Converter/TextMode.tsx

@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useMemo, useState } from 'react';
 import TextInputArea from '@/components/TextInputArea';
-import { useTranslation } from 'react-i18next';
+import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import CopyButton from '@/components/CopyButton';
 import { base64ToText, textToBase64 } from '@/utils/base64Converter';
 import SwitchButtonGroup from '@/components/SwitchButtonGroup';
@@ -20,7 +20,7 @@ interface TextModeProps {
 }
 
 export default function TextMode({ onSwitchToImageMode }: TextModeProps = {}) {
-  const { t } = useTranslation('base64Converter');
+  const { t } = useLazyTranslation('base64Converter');
 
   // 1. 纯净的核心源状态机：只保留输入源和转换方向
   const [input, setInput] = useState('');

pages/Base64Converter/useBase64Converter.ts

@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { useTranslation } from 'react-i18next';
+import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import type { FileToBase64Result } from '@/utils/base64Converter';
 import {
   base64ToBlob,
@@ -21,7 +21,7 @@ interface UseBase64ConverterProps {
 }
 
 export function useBase64Converter({ mode }: UseBase64ConverterProps) {
-  const { t } = useTranslation('base64Converter');
+  const { t } = useLazyTranslation('base64Converter');
 
   const [result, setResult] = useState<FileToBase64Result | null>(null);
   const [info, setInfo] = useState<FileInfo | null>(null);