refactor: check proxy validity via donut-proxy

src/i18n/locales/en.json

@@ -296,8 +296,8 @@
       "formatTextHint": "Expects text like: host:port:username:password or protocol://user:pass@host:port",
       "testUrl": "Test URL",
       "testing": "Testing...",
-      "testSuccess": "Dynamic proxy resolved to {{host}}:{{port}}",
-      "testFailed": "Failed to fetch proxy: {{error}}",
+      "testSuccess": "Proxy working: {{host}}:{{port}}",
+      "testFailed": "Proxy test failed: {{error}}",
       "fetchFailed": "Failed to fetch dynamic proxy: {{error}}"
     },
     "check": {

src/i18n/locales/es.json

@@ -296,8 +296,8 @@
       "formatTextHint": "Espera texto como: host:port:username:password o protocol://user:pass@host:port",
       "testUrl": "Probar URL",
       "testing": "Probando...",
-      "testSuccess": "El proxy dinámico se resolvió a {{host}}:{{port}}",
-      "testFailed": "Error al obtener el proxy: {{error}}",
+      "testSuccess": "Proxy funcionando: {{host}}:{{port}}",
+      "testFailed": "Prueba de proxy fallida: {{error}}",
       "fetchFailed": "Error al obtener el proxy dinámico: {{error}}"
     },
     "check": {

src/i18n/locales/fr.json

@@ -296,8 +296,8 @@
       "formatTextHint": "Attend du texte comme : host:port:username:password ou protocol://user:pass@host:port",
       "testUrl": "Tester l'URL",
       "testing": "Test en cours...",
-      "testSuccess": "Le proxy dynamique a été résolu en {{host}}:{{port}}",
-      "testFailed": "Échec de la récupération du proxy : {{error}}",
+      "testSuccess": "Proxy fonctionnel : {{host}}:{{port}}",
+      "testFailed": "Échec du test de proxy : {{error}}",
       "fetchFailed": "Échec de la récupération du proxy dynamique : {{error}}"
     },
     "check": {

src/i18n/locales/ja.json

@@ -296,8 +296,8 @@
       "formatTextHint": "テキスト形式: host:port:username:password または protocol://user:pass@host:port",
       "testUrl": "URLをテスト",
       "testing": "テスト中...",
-      "testSuccess": "ダイナミックプロキシは {{host}}:{{port}} に解決されました",
-      "testFailed": "プロキシの取得に失敗しました: {{error}}",
+      "testSuccess": "プロキシ動作中: {{host}}:{{port}}",
+      "testFailed": "プロキシテスト失敗: {{error}}",
       "fetchFailed": "ダイナミックプロキシの取得に失敗しました: {{error}}"
     },
     "check": {

src/i18n/locales/pt.json

@@ -296,8 +296,8 @@
       "formatTextHint": "Espera texto como: host:port:username:password ou protocol://user:pass@host:port",
       "testUrl": "Testar URL",
       "testing": "Testando...",
-      "testSuccess": "O proxy dinâmico foi resolvido para {{host}}:{{port}}",
-      "testFailed": "Falha ao obter o proxy: {{error}}",
+      "testSuccess": "Proxy funcionando: {{host}}:{{port}}",
+      "testFailed": "Falha no teste de proxy: {{error}}",
       "fetchFailed": "Falha ao obter o proxy dinâmico: {{error}}"
     },
     "check": {

src/i18n/locales/ru.json

@@ -296,8 +296,8 @@
       "formatTextHint": "Ожидается текст вида: host:port:username:password или protocol://user:pass@host:port",
       "testUrl": "Проверить URL",
       "testing": "Проверка...",
-      "testSuccess": "Динамический прокси разрешён в {{host}}:{{port}}",
-      "testFailed": "Не удалось получить прокси: {{error}}",
+      "testSuccess": "Прокси работает: {{host}}:{{port}}",
+      "testFailed": "Тест прокси не пройден: {{error}}",
       "fetchFailed": "Не удалось получить динамический прокси: {{error}}"
     },
     "check": {

src/i18n/locales/zh.json

@@ -296,8 +296,8 @@
       "formatTextHint": "期望文本格式: host:port:username:password 或 protocol://user:pass@host:port",
       "testUrl": "测试URL",
       "testing": "测试中...",
-      "testSuccess": "动态代理已解析为 {{host}}:{{port}}",
-      "testFailed": "获取代理失败: {{error}}",
+      "testSuccess": "代理正常运行: {{host}}:{{port}}",
+      "testFailed": "代理测试失败: {{error}}",
       "fetchFailed": "获取动态代理失败: {{error}}"
     },
     "check": {