数据结构优化

client/src/components/CodePreview.vue

@@ -26,7 +26,7 @@
       <div class="flex items-center gap-4">
         <CustomSelect
           v-model="selectedLanguage"
-          :options="languageOptions.filter(opt => !opt.disabled)"
+          :options="languageOptions"
           @update:modelValue="handleLanguageChange"
           placeholder="选择语言"
           style="width: 180px; font-family: monospace; font-size: 0.75rem;"
@@ -449,13 +449,15 @@ const getConsoleTemplate = (jsCode: string) => {
   `
 }
 
+let runTimer: ReturnType<typeof setTimeout> | null = null
+
 const handleCodeChange = () => {
   highlightCode()
   // 对于非 Web 语言（如 Python/React），不自动运行，等待用户点击 Run
   if (['html', 'css', 'javascript'].includes(selectedLanguage.value)) {
     // Debounce auto-run for lightweight languages
-    clearTimeout(window.runTimer)
-    window.runTimer = setTimeout(() => runCode(), 1000)
+    if (runTimer) clearTimeout(runTimer)
+    runTimer = setTimeout(() => runCode(), 1000)
   }
 }