fix(i18n): remove 24 duplicate JSON keys in en.json + pt-BR.json

- Removed duplicate providers/new keys (selectProvider, apiKeyRequired, etc.)
  that overlapped with pre-existing keys from earlier migration
- Removed duplicate backToProviders in both files
- Removed duplicate loadingPricing and databaseSize in settings namespace
- Updated providers/new/page.tsx to use original key names
- Verified 0 duplicates remain via Python namespace scan

src/app/(dashboard)/dashboard/providers/new/page.tsx

@@ -63,10 +63,10 @@ export default function NewProviderPage() {
         router.push("/dashboard/providers");
       } else {
         const data = await response.json();
-        setErrors({ submit: data.error || t("failedCreateProvider") });
+        setErrors({ submit: data.error || t("failedCreate") });
       }
     } catch (error) {
-      setErrors({ submit: t("errorOccurredRetry") });
+      setErrors({ submit: t("errorOccurred") });
     } finally {
       setLoading(false);
     }
@@ -98,7 +98,7 @@ export default function NewProviderPage() {
             options={providerOptions}
             value={formData.provider}
             onChange={(e) => handleChange("provider", e.target.value)}
-            placeholder={t("selectProviderPlaceholder")}
+            placeholder={t("selectProvider")}
             error={errors.provider as string}
             required
           />
@@ -156,7 +156,7 @@ export default function NewProviderPage() {
               value={formData.apiKey}
               onChange={(e) => handleChange("apiKey", e.target.value)}
               error={errors.apiKey as string}
-              hint={t("apiKeyEncrypted")}
+              hint={t("apiKeySecure")}
               required
             />
           )}
@@ -164,9 +164,9 @@ export default function NewProviderPage() {
           {/* OAuth2 Button */}
           {formData.authMethod === "oauth2" && (
             <Card.Section className="">
-              <p className="text-sm text-text-muted mb-4">{t("connectOAuth2")}</p>
+              <p className="text-sm text-text-muted mb-4">{t("oauth2Desc")}</p>
               <Button type="button" variant="secondary" icon="link">
-                {t("connectWithOAuth2")}
+                {t("oauth2Connect")}
               </Button>
             </Card.Section>
           )}
@@ -184,7 +184,7 @@ export default function NewProviderPage() {
           <Toggle
             checked={formData.isActive}
             onChange={(checked) => handleChange("isActive", checked)}
-            label={t("activeLabel")}
+            label={t("active")}
             description={t("activeDescription")}
           />
 

src/i18n/messages/en.json

@@ -579,7 +579,6 @@
     "connectionFailed": "Connection failed. Check URL and key.",
     "testKeyLabel": "Test API Key",
     "testKeyPlaceholder": "sk-... (for validation only)",
-    "backToProviders": "Back to Providers",
     "providerNotFound": "Provider not found",
     "deleteConnectionConfirm": "Delete this connection?",
     "failedSetAlias": "Failed to set alias",
@@ -612,24 +611,7 @@
     "disableRateLimitProtection": "Click to disable rate limit protection",
     "productionKey": "Production Key",
     "enterNewApiKey": "Enter new API key",
-    "optional": "Optional",
-    "selectProvider": "Please select a provider",
-    "apiKeyRequired": "API Key is required",
-    "failedCreateProvider": "Failed to create provider",
-    "errorOccurredRetry": "An error occurred. Please try again.",
-    "addNewProvider": "Add New Provider",
-    "configureNewProvider": "Configure a new AI provider to use with your applications.",
-    "selectProviderPlaceholder": "Select a provider",
-    "selectedProvider": "Selected provider",
-    "authMethod": "Authentication Method",
-    "enterApiKey": "Enter your API key",
-    "apiKeyEncrypted": "Your API key will be encrypted and stored securely.",
-    "connectOAuth2": "Connect your account using OAuth2 authentication.",
-    "connectWithOAuth2": "Connect with OAuth2",
-    "activeLabel": "Active",
-    "activeDescription": "Enable this provider for use in your applications",
-    "cancel": "Cancel",
-    "createProvider": "Create Provider"
+    "optional": "Optional"
   },
   "settings": {
     "title": "Settings",
@@ -916,8 +898,6 @@
     "model": "Model",
     "models": "models",
     "withPricing": "with pricing configured",
-    "loadingPricing": "Loading pricing data...",
-    "databaseSize": "Database Size",
     "policiesCircuitBreakers": "Policies & Circuit Breakers",
     "activeIssuesDetected": "Active issues detected",
     "off": "Off",

src/i18n/messages/pt-BR.json

@@ -579,7 +579,6 @@
     "connectionFailed": "Falha na conexão. Verifique URL e chave.",
     "testKeyLabel": "Chave de API de Teste",
     "testKeyPlaceholder": "sk-... (apenas para validação)",
-    "backToProviders": "Voltar para Provedores",
     "providerNotFound": "Provedor não encontrado",
     "deleteConnectionConfirm": "Excluir esta conexão?",
     "failedSetAlias": "Falha ao definir alias",
@@ -612,24 +611,7 @@
     "disableRateLimitProtection": "Clique para desabilitar proteção de limite de taxa",
     "productionKey": "Chave de Produção",
     "enterNewApiKey": "Insira a nova chave API",
-    "optional": "Opcional",
-    "selectProvider": "Por favor, selecione um provedor",
-    "apiKeyRequired": "Chave API é obrigatória",
-    "failedCreateProvider": "Falha ao criar provedor",
-    "errorOccurredRetry": "Ocorreu um erro. Tente novamente.",
-    "addNewProvider": "Adicionar Novo Provedor",
-    "configureNewProvider": "Configure um novo provedor de IA para usar com suas aplicações.",
-    "selectProviderPlaceholder": "Selecione um provedor",
-    "selectedProvider": "Provedor selecionado",
-    "authMethod": "Método de Autenticação",
-    "enterApiKey": "Insira sua chave API",
-    "apiKeyEncrypted": "Sua chave API será criptografada e armazenada com segurança.",
-    "connectOAuth2": "Conecte sua conta usando autenticação OAuth2.",
-    "connectWithOAuth2": "Conectar com OAuth2",
-    "activeLabel": "Ativo",
-    "activeDescription": "Habilitar este provedor para uso em suas aplicações",
-    "cancel": "Cancelar",
-    "createProvider": "Criar Provedor"
+    "optional": "Opcional"
   },
   "settings": {
     "title": "Configurações",
@@ -916,8 +898,6 @@
     "model": "Modelo",
     "models": "modelos",
     "withPricing": "com preço configurado",
-    "loadingPricing": "Carregando dados de preços...",
-    "databaseSize": "Tamanho do Banco de Dados",
     "policiesCircuitBreakers": "Políticas e Disjuntores",
     "activeIssuesDetected": "Problemas ativos detectados",
     "off": "Desligado",