修复翻译键：添加缺失的platform、originalLink翻译键，修正backToList的使用

Author: CC11001100

src/components/ChallengeDetailPage/ChallengeActions.tsx

@@ -38,7 +38,7 @@ const ChallengeActions: React.FC<ChallengeActionsProps> = ({ challenge, isMobile
                         maxWidth: '400px'
                     }}
                 >
-                    {t('challenge.detail.backToList')}
+                    {t('challenge.actions.backToList')}
                 </Button>
             </div>
         );
@@ -68,7 +68,7 @@ const ChallengeActions: React.FC<ChallengeActionsProps> = ({ challenge, isMobile
                 )}
             </div>
             <Link to="/challenges" style={{ color: '#1890ff' }}>
-                {t('challenge.detail.backToList')}
+                {t('challenge.actions.backToList')}
             </Link>
         </div>
     );

src/locales/en.ts

@@ -147,9 +147,11 @@ export default {
             relatedChallenges: 'Related Challenges',
             technicalTags: 'Technical Tags',
             targetWebsite: 'Target Website',
+            platform: 'Platform',
             difficulty: 'Difficulty',
             created: 'Created',
             updated: 'Updated',
+            originalLink: 'Original Link',
             startChallenge: 'Try It',
             startChallengeShort: 'Try',
             viewSolution: 'View Solution',
@@ -165,7 +167,9 @@ export default {
             correction: 'Correction',
             correctionTooltip: 'Think the content could be improved or has errors? Don\'t hesitate to submit a PR on GitHub',
             reportIssue: 'Report Issue',
-            issueTooltip: 'Having a problem? Click to submit a GitHub Issue'
+            issueTooltip: 'Having a problem? Click to submit a GitHub Issue',
+            backToList: 'Back to Challenge List',
+            unspecified: 'Unspecified'
         },
         actions: {
             backToList: 'Back to Challenge List'

src/locales/zh.ts

@@ -147,9 +147,11 @@ const zhTranslations = {
             relatedChallenges: '相关挑战',
             technicalTags: '技术标签',
             targetWebsite: '目标网站',
+            platform: '平台',
             difficulty: '难度级别',
             created: '创建时间',
             updated: '更新时间',
+            originalLink: '原始链接',
             startChallenge: '去试试',
             startChallengeShort: '试试',
             viewSolution: '查看解决方案',
@@ -165,7 +167,9 @@ const zhTranslations = {
             correction: '纠错',
             correctionTooltip: '感觉内容可以优化甚至有错误？别犹豫点此去GitHub提PR',
             reportIssue: '反馈问题',
-            issueTooltip: '遇到问题？点此提交GitHub Issue'
+            issueTooltip: '遇到问题？点此提交GitHub Issue',
+            backToList: '返回挑战列表',
+            unspecified: '未指定'
         },
         actions: {
             backToList: '返回挑战列表'