fix(i18n): replace hardcoded text with translation in file preview (#207)

Author: lyzno1

components/file-preview/file-preview-canvas.tsx

@@ -334,6 +334,7 @@ export const FilePreviewCanvas = () => {
     useFilePreviewStore();
   const { isDark } = useTheme();
   const pathname = usePathname();
+  const t = useTranslations('filePreview');
 
   // Auto-close preview when route changes (best practice for modal state management)
   useEffect(() => {
@@ -396,7 +397,7 @@ export const FilePreviewCanvas = () => {
                     ? 'text-stone-300 hover:bg-stone-700 hover:text-stone-200'
                     : 'text-stone-600 hover:bg-stone-200 hover:text-stone-800'
                 )}
-                aria-label="Close preview"
+                aria-label={t('closeButton')}
               >
                 <XIcon className="h-5 w-5" />
               </button>

messages/en-US.json

@@ -2338,6 +2338,7 @@
     "retryButton": "Retry",
     "dismissButton": "Dismiss",
     "downloadButton": "Download File",
+    "closeButton": "Close preview",
     "noFileSelected": "No file selected",
     "previewNotSupported": "Preview not supported for this file type. You can download it to view the content.",
     "textPreview": {

messages/zh-CN.json

@@ -2338,6 +2338,7 @@
     "retryButton": "重试",
     "dismissButton": "关闭",
     "downloadButton": "下载文件",
+    "closeButton": "关闭预览",
     "noFileSelected": "未选择文件",
     "previewNotSupported": "不支持预览此文件类型。您可以下载查看内容。",
     "textPreview": {