fix: add missing i18n fields in admin and fix Surge template issue

app/Http/Controllers/V2/Admin/ConfigController.php

@@ -218,7 +218,7 @@ class ConfigController extends Controller
                     )
                 ),
                 'subscribe_template_surge' => (string) $this->getTemplateContent(
-                    $this->getRuleFile(Stash::CUSTOM_TEMPLATE_FILE, Stash::DEFAULT_TEMPLATE_FILE)
+                    $this->getRuleFile(Surge::CUSTOM_TEMPLATE_FILE, Surge::DEFAULT_TEMPLATE_FILE)
                 ),
                 'subscribe_template_surfboard' => (string) $this->getTemplateContent(
                     $this->getRuleFile(Surfboard::CUSTOM_TEMPLATE_FILE, Surfboard::DEFAULT_TEMPLATE_FILE)

public/assets/admin/locales/en-US.js

@@ -798,6 +798,10 @@ window.XBOARD_TRANSLATIONS['en-US'] = {
       "surge": {
         "title": "Surge Template",
         "description": "Configure subscription template format for Surge"
+      },
+      "surfboard": {
+        "title": "Surfboard Template",
+        "description": "Configure subscription template format for Surfboard"
       }
     }
   },

public/assets/admin/locales/ko-KR.js

@@ -796,6 +796,10 @@ window.XBOARD_TRANSLATIONS['ko-KR'] = {
       "surge": {
         "title": "Surge 템플릿",
         "description": "Surge의 구독 템플릿 형식 설정"
+      },
+      "surfboard": {
+        "title": "Surfboard 템플릿",
+        "description": "Surfboard의 구독 템플릿 형식 설정"
       }
     }
   },

public/assets/admin/locales/zh-CN.js

@@ -803,6 +803,10 @@ window.XBOARD_TRANSLATIONS['zh-CN'] = {
       "surge": {
         "title": "Surge 配置模板",
         "description": "配置 Surge 订阅模板，支持 Surge 配置文件格式"
+      },
+      "surfboard": {
+        "title": "Surfboard 配置模版",
+        "description": "配额 Surfboard 订阅模版"
       }
     }
   },