fix(i18n, ui): correct syntax error in generateDynamicTypeLabel method

- Move generateDynamicTypeLabel method from inside updateAuthFileFilterButtons to proper class method location
- Fix JavaScript syntax error that prevented app from loading
- Preserve all internationalization functionality from 257260b

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.js

@@ -3259,17 +3259,6 @@ class CLIProxyManager {
                     btn.setAttribute('data-i18n-text', dynamicKey);
                     btn.textContent = this.generateDynamicTypeLabel(type);
                 }
-    // 生成动态类型标签
-    generateDynamicTypeLabel(type) {
-        if (!type) return '';
-        const key = `auth_files.type_${type}`;
-        const translated = i18n.t(key);
-        if (translated && translated !== key) {
-            return translated;
-        }
-        if (type.toLowerCase() === 'iflow') return 'iFlow';
-        return type.charAt(0).toUpperCase() + type.slice(1);
-    }
 
                 // 插入到 Empty 按钮之前（如果存在）
                 const emptyBtn = filterContainer.querySelector('[data-type="empty"]');
@@ -3307,6 +3296,18 @@ class CLIProxyManager {
         this.refreshFilterButtonTexts();
     }
 
+    // 生成动态类型标签
+    generateDynamicTypeLabel(type) {
+        if (!type) return '';
+        const key = `auth_files.type_${type}`;
+        const translated = i18n.t(key);
+        if (translated && translated !== key) {
+            return translated;
+        }
+        if (type.toLowerCase() === 'iflow') return 'iFlow';
+        return type.charAt(0).toUpperCase() + type.slice(1);
+    }
+
     // 绑定认证文件筛选事件
     bindAuthFileFilterEvents() {
         const filterContainer = document.querySelector('.auth-file-filter');