feat(i18n): migrate Settings page batch 1 (7 files, 28+ strings)

- Main page.tsx: tab labels, footer
- AppearanceTab: dark mode, health check logs
- CacheStatsCard: prompt cache stats
- ProxyTab: global proxy
- SystemPromptTab: global system prompt
- ThinkingBudgetTab: mode labels, effort levels
- Expanded settings namespace from 63 to 100 keys

src/app/(dashboard)/dashboard/settings/components/AppearanceTab.tsx

@@ -4,9 +4,11 @@ import { useState, useEffect } from "react";
 import { Card, Toggle } from "@/shared/components";
 import { useTheme } from "@/shared/hooks/useTheme";
 import { cn } from "@/shared/utils/cn";
+import { useTranslations } from "next-intl";
 
 export default function AppearanceTab() {
   const { theme, setTheme, isDark } = useTheme();
+  const t = useTranslations("settings");
   const [settings, setSettings] = useState<Record<string, any>>({});
   const [loading, setLoading] = useState(true);
 
@@ -48,13 +50,13 @@ export default function AppearanceTab() {
             palette
           </span>
         </div>
-        <h3 className="text-lg font-semibold">Appearance</h3>
+        <h3 className="text-lg font-semibold">{t("appearance")}</h3>
       </div>
       <div className="flex flex-col gap-4">
         <div className="flex items-center justify-between">
           <div>
-            <p className="font-medium">Dark Mode</p>
-            <p className="text-sm text-text-muted">Switch between light and dark themes</p>
+            <p className="font-medium">{t("darkMode")}</p>
+            <p className="text-sm text-text-muted">{t("switchThemes")}</p>
           </div>
           <Toggle checked={isDark} onChange={() => setTheme(isDark ? "light" : "dark")} />
         </div>
@@ -90,10 +92,8 @@ export default function AppearanceTab() {
         <div className="pt-4 border-t border-border">
           <div className="flex items-center justify-between">
             <div>
-              <p className="font-medium">Hide Health Check Logs</p>
-              <p className="text-sm text-text-muted">
-                When ON, suppress [HealthCheck] messages in server console
-              </p>
+              <p className="font-medium">{t("hideHealthLogs")}</p>
+              <p className="text-sm text-text-muted">{t("hideHealthLogsDesc")}</p>
             </div>
             <Toggle
               checked={settings.hideHealthCheckLogs === true}

src/app/(dashboard)/dashboard/settings/components/CacheStatsCard.tsx

@@ -2,10 +2,12 @@
 
 import { useState, useEffect } from "react";
 import { Card } from "@/shared/components";
+import { useTranslations } from "next-intl";
 
 export default function CacheStatsCard() {
   const [cache, setCache] = useState(null);
   const [flushing, setFlushing] = useState(false);
+  const t = useTranslations("settings");
 
   const fetchStats = () => {
     fetch("/api/cache/stats")
@@ -31,40 +33,40 @@ export default function CacheStatsCard() {
       <div className="flex items-center justify-between mb-4">
         <h3 className="text-lg font-semibold text-text-main flex items-center gap-2">
           <span className="material-symbols-outlined text-[20px]">cached</span>
-          Prompt Cache
+          {t("promptCache")}
         </h3>
         <button
           onClick={handleFlush}
           disabled={flushing}
           className="px-3 py-1.5 text-xs rounded-lg bg-red-500/10 text-red-400 hover:bg-red-500/20 transition-colors disabled:opacity-50"
         >
-          {flushing ? "Flushing…" : "Flush Cache"}
+          {flushing ? t("flushing") : t("flushCache")}
         </button>
       </div>
 
       {cache ? (
         <div className="grid grid-cols-2 gap-4 text-sm">
           <div>
-            <p className="text-text-muted">Size</p>
+            <p className="text-text-muted">{t("size")}</p>
             <p className="font-mono text-lg text-text-main">
               {cache.size}/{cache.maxSize}
             </p>
           </div>
           <div>
-            <p className="text-text-muted">Hit Rate</p>
+            <p className="text-text-muted">{t("hitRate")}</p>
             <p className="font-mono text-lg text-text-main">{cache.hitRate?.toFixed(1) ?? 0}%</p>
           </div>
           <div>
-            <p className="text-text-muted">Hits</p>
+            <p className="text-text-muted">{t("hits")}</p>
             <p className="font-mono text-text-main">{cache.hits ?? 0}</p>
           </div>
           <div>
-            <p className="text-text-muted">Evictions</p>
+            <p className="text-text-muted">{t("evictions")}</p>
             <p className="font-mono text-text-main">{cache.evictions ?? 0}</p>
           </div>
         </div>
       ) : (
-        <p className="text-sm text-text-muted">Loading cache stats…</p>
+        <p className="text-sm text-text-muted">{t("loadingCacheStats")}</p>
       )}
     </Card>
   );

src/app/(dashboard)/dashboard/settings/components/ProxyTab.tsx

@@ -2,11 +2,14 @@
 
 import { useState, useEffect, useRef } from "react";
 import { Card, Button, ProxyConfigModal } from "@/shared/components";
+import { useTranslations } from "next-intl";
 
 export default function ProxyTab() {
   const [proxyModalOpen, setProxyModalOpen] = useState(false);
   const [globalProxy, setGlobalProxy] = useState(null);
   const mountedRef = useRef(true);
+  const t = useTranslations("settings");
+  const tc = useTranslations("common");
 
   const loadGlobalProxy = async () => {
     try {
@@ -44,12 +47,9 @@ export default function ProxyTab() {
             <span className="material-symbols-outlined text-xl text-primary" aria-hidden="true">
               vpn_lock
             </span>
-            <h2 className="text-lg font-bold">Global Proxy</h2>
+            <h2 className="text-lg font-bold">{t("globalProxy")}</h2>
           </div>
-          <p className="text-sm text-text-muted mb-4">
-            Configure a global outbound proxy for all API calls. Individual providers, combos, and
-            keys can override this.
-          </p>
+          <p className="text-sm text-text-muted mb-4">{t("globalProxyDesc")}</p>
           <div className="flex items-center gap-3">
             {globalProxy ? (
               <div className="flex items-center gap-2">
@@ -58,7 +58,7 @@ export default function ProxyTab() {
                 </span>
               </div>
             ) : (
-              <span className="text-sm text-text-muted">No global proxy configured</span>
+              <span className="text-sm text-text-muted">{t("noGlobalProxy")}</span>
             )}
             <Button
               size="sm"
@@ -69,7 +69,7 @@ export default function ProxyTab() {
                 setProxyModalOpen(true);
               }}
             >
-              {globalProxy ? "Edit" : "Configure"}
+              {globalProxy ? tc("edit") : t("configure")}
             </Button>
           </div>
         </div>

src/app/(dashboard)/dashboard/settings/components/SystemPromptTab.tsx

@@ -2,12 +2,14 @@
 
 import { useState, useEffect } from "react";
 import { Card, Toggle } from "@/shared/components";
+import { useTranslations } from "next-intl";
 
 export default function SystemPromptTab() {
   const [config, setConfig] = useState({ enabled: false, prompt: "" });
   const [loading, setLoading] = useState(true);
   const [status, setStatus] = useState("");
   const [debounceTimer, setDebounceTimer] = useState(null);
+  const t = useTranslations("settings");
 
   useEffect(() => {
     fetch("/api/settings/system-prompt")
@@ -57,13 +59,14 @@ export default function SystemPromptTab() {
           </span>
         </div>
         <div className="flex-1">
-          <h3 className="text-lg font-semibold">Global System Prompt</h3>
-          <p className="text-sm text-text-muted">Injected into all requests at proxy level</p>
+          <h3 className="text-lg font-semibold">{t("globalSystemPrompt")}</h3>
+          <p className="text-sm text-text-muted">{t("systemPromptDesc")}</p>
         </div>
         <div className="flex items-center gap-3">
           {status === "saved" && (
             <span className="text-xs font-medium text-emerald-500 flex items-center gap-1">
-              <span className="material-symbols-outlined text-[14px]">check_circle</span> Saved
+              <span className="material-symbols-outlined text-[14px]">check_circle</span>{" "}
+              {t("saved")}
             </span>
           )}
           <Toggle
@@ -80,7 +83,7 @@ export default function SystemPromptTab() {
             <textarea
               value={config.prompt}
               onChange={(e) => handlePromptChange(e.target.value)}
-              placeholder="Enter system prompt to inject into all requests..."
+              placeholder={t("systemPromptPlaceholder")}
               rows={5}
               className="w-full px-4 py-3 rounded-lg border border-border/50 bg-surface/30 text-sm
                          placeholder:text-text-muted/50 resize-y min-h-[120px]
@@ -94,8 +97,9 @@ export default function SystemPromptTab() {
           </div>
           <p className="text-xs text-text-muted/70 flex items-center gap-1.5">
             <span className="material-symbols-outlined text-[14px]">info</span>
-            This prompt is prepended to the system message of every request. Use for global instructions,
-            safety guidelines, or response formatting rules. Send <code className="px-1 py-0.5 rounded bg-surface/50">_skipSystemPrompt: true</code> in a request to bypass.
+            {t("systemPromptHint")} Send{" "}
+            <code className="px-1 py-0.5 rounded bg-surface/50">_skipSystemPrompt: true</code> in a
+            request to bypass.
           </p>
         </div>
       )}

src/app/(dashboard)/dashboard/settings/components/ThinkingBudgetTab.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect } from "react";
 import { Card, Button, Select } from "@/shared/components";
+import { useTranslations } from "next-intl";
 
 const MODES = [
   {
@@ -46,6 +47,7 @@ export default function ThinkingBudgetTab() {
   const [loading, setLoading] = useState(true);
   const [saving, setSaving] = useState(false);
   const [status, setStatus] = useState("");
+  const t = useTranslations("settings");
 
   useEffect(() => {
     fetch("/api/settings/thinking-budget")
@@ -90,12 +92,12 @@ export default function ThinkingBudgetTab() {
           </span>
         </div>
         <div>
-          <h3 className="text-lg font-semibold">Thinking Budget</h3>
-          <p className="text-sm text-text-muted">Control AI reasoning token usage across all requests</p>
+          <h3 className="text-lg font-semibold">{t("thinkingBudgetTitle")}</h3>
+          <p className="text-sm text-text-muted">{t("thinkingBudgetDesc")}</p>
         </div>
         {status === "saved" && (
           <span className="ml-auto text-xs font-medium text-emerald-500 flex items-center gap-1">
-            <span className="material-symbols-outlined text-[14px]">check_circle</span> Saved
+            <span className="material-symbols-outlined text-[14px]">check_circle</span> {t("saved")}
           </span>
         )}
       </div>
@@ -121,7 +123,9 @@ export default function ThinkingBudgetTab() {
               {m.icon}
             </span>
             <div className="min-w-0">
-              <p className={`text-sm font-medium ${config.mode === m.value ? "text-violet-400" : ""}`}>
+              <p
+                className={`text-sm font-medium ${config.mode === m.value ? "text-violet-400" : ""}`}
+              >
                 {m.label}
               </p>
               <p className="text-xs text-text-muted mt-0.5 leading-relaxed">{m.desc}</p>
@@ -134,9 +138,9 @@ export default function ThinkingBudgetTab() {
       {config.mode === "custom" && (
         <div className="p-4 rounded-lg bg-surface/30 border border-border/30 mb-4">
           <div className="flex items-center justify-between mb-3">
-            <p className="text-sm font-medium">Token Budget</p>
+            <p className="text-sm font-medium">{t("tokenBudget")}</p>
             <span className="text-sm font-mono tabular-nums text-violet-400">
-              {config.customBudget.toLocaleString()} tokens
+              {config.customBudget.toLocaleString()} {t("tokens")}
             </span>
           </div>
           <input
@@ -161,10 +165,8 @@ export default function ThinkingBudgetTab() {
       {/* Adaptive effort level */}
       {config.mode === "adaptive" && (
         <div className="p-4 rounded-lg bg-surface/30 border border-border/30">
-          <p className="text-sm font-medium mb-3">Base Effort Level</p>
-          <p className="text-xs text-text-muted mb-3">
-            Adaptive mode scales from this base level based on message count, tool usage, and prompt length.
-          </p>
+          <p className="text-sm font-medium mb-3">{t("baseEffortLevel")}</p>
+          <p className="text-xs text-text-muted mb-3">{t("adaptiveHint")}</p>
           <div className="grid grid-cols-4 gap-2">
             {EFFORTS.map((e) => (
               <button

src/app/(dashboard)/dashboard/settings/page.tsx

@@ -4,6 +4,7 @@ import { useState } from "react";
 import { useSearchParams } from "next/navigation";
 import { cn } from "@/shared/utils/cn";
 import { APP_CONFIG } from "@/shared/constants/config";
+import { useTranslations } from "next-intl";
 import SystemStorageTab from "./components/SystemStorageTab";
 import SecurityTab from "./components/SecurityTab";
 import RoutingTab from "./components/RoutingTab";
@@ -17,15 +18,16 @@ import CacheStatsCard from "./components/CacheStatsCard";
 import ResilienceTab from "./components/ResilienceTab";
 
 const tabs = [
-  { id: "general", label: "General", icon: "settings" },
-  { id: "ai", label: "AI", icon: "smart_toy" },
-  { id: "security", label: "Security", icon: "shield" },
-  { id: "routing", label: "Routing", icon: "route" },
-  { id: "resilience", label: "Resilience", icon: "electrical_services" },
-  { id: "advanced", label: "Advanced", icon: "tune" },
+  { id: "general", labelKey: "general", icon: "settings" },
+  { id: "ai", labelKey: "ai", icon: "smart_toy" },
+  { id: "security", labelKey: "security", icon: "shield" },
+  { id: "routing", labelKey: "routing", icon: "route" },
+  { id: "resilience", labelKey: "resilience", icon: "electrical_services" },
+  { id: "advanced", labelKey: "advanced", icon: "tune" },
 ];
 
 export default function SettingsPage() {
+  const t = useTranslations("settings");
   const searchParams = useSearchParams();
   const tabParam = searchParams.get("tab");
   const [userSelectedTab, setUserSelectedTab] = useState(null);
@@ -57,13 +59,16 @@ export default function SettingsPage() {
               <span className="material-symbols-outlined text-[18px]" aria-hidden="true">
                 {tab.icon}
               </span>
-              <span className="hidden sm:inline">{tab.label}</span>
+              <span className="hidden sm:inline">{t(tab.labelKey)}</span>
             </button>
           ))}
         </div>
 
         {/* Tab contents */}
-        <div role="tabpanel" aria-label={tabs.find((t) => t.id === activeTab)?.label}>
+        <div
+          role="tabpanel"
+          aria-label={t(tabs.find((t2) => t2.id === activeTab)?.labelKey || "general")}
+        >
           {activeTab === "general" && (
             <>
               <div className="flex flex-col gap-6">
@@ -100,7 +105,7 @@ export default function SettingsPage() {
           <p>
             {APP_CONFIG.name} v{APP_CONFIG.version}
           </p>
-          <p className="mt-1">Local Mode — All data stored on your machine</p>
+          <p className="mt-1">{t("localMode")}</p>
         </div>
       </div>
     </div>

src/i18n/messages/en.json

@@ -629,7 +629,44 @@
     "ipWhitelist": "IP Whitelist",
     "ipBlacklist": "IP Blacklist",
     "addIP": "Add IP",
-    "savedSuccessfully": "Settings saved successfully"
+    "savedSuccessfully": "Settings saved successfully",
+    "ai": "AI",
+    "advanced": "Advanced",
+    "localMode": "Local Mode — All data stored on your machine",
+    "switchThemes": "Switch between light and dark themes",
+    "hideHealthLogs": "Hide Health Check Logs",
+    "hideHealthLogsDesc": "When ON, suppress [HealthCheck] messages in server console",
+    "promptCache": "Prompt Cache",
+    "flushCache": "Flush Cache",
+    "flushing": "Flushing…",
+    "size": "Size",
+    "hits": "Hits",
+    "evictions": "Evictions",
+    "loadingCacheStats": "Loading cache stats…",
+    "globalProxy": "Global Proxy",
+    "globalProxyDesc": "Configure a global outbound proxy for all API calls. Individual providers, combos, and keys can override this.",
+    "noGlobalProxy": "No global proxy configured",
+    "configure": "Configure",
+    "globalSystemPrompt": "Global System Prompt",
+    "systemPromptDesc": "Injected into all requests at proxy level",
+    "saved": "Saved",
+    "systemPromptPlaceholder": "Enter system prompt to inject into all requests...",
+    "systemPromptHint": "This prompt is prepended to the system message of every request. Use for global instructions, safety guidelines, or response formatting rules.",
+    "chars": "{count} chars",
+    "thinkingBudgetTitle": "Thinking Budget",
+    "thinkingBudgetDesc": "Control AI reasoning token usage across all requests",
+    "passthrough": "Passthrough",
+    "passthroughDesc": "No changes — client controls thinking budget",
+    "auto": "Auto",
+    "autoDesc": "Strip all thinking config — let provider decide",
+    "custom": "Custom",
+    "customDesc": "Set a fixed token budget for all requests",
+    "adaptive": "Adaptive",
+    "adaptiveDesc": "Scale budget based on request complexity",
+    "tokenBudget": "Token Budget",
+    "tokens": "tokens",
+    "baseEffortLevel": "Base Effort Level",
+    "adaptiveHint": "Adaptive mode scales from this base level based on message count, tool usage, and prompt length."
   },
   "translator": {
     "title": "Translator",

src/i18n/messages/pt-BR.json

@@ -629,7 +629,44 @@
     "ipWhitelist": "Lista de IPs Permitidos",
     "ipBlacklist": "Lista de IPs Bloqueados",
     "addIP": "Adicionar IP",
-    "savedSuccessfully": "Configurações salvas com sucesso"
+    "savedSuccessfully": "Configurações salvas com sucesso",
+    "ai": "IA",
+    "advanced": "Avançado",
+    "localMode": "Modo Local — Todos os dados armazenados na sua máquina",
+    "switchThemes": "Alternar entre temas claro e escuro",
+    "hideHealthLogs": "Ocultar Logs de Health Check",
+    "hideHealthLogsDesc": "Quando ATIVADO, suprime mensagens [HealthCheck] no console do servidor",
+    "promptCache": "Cache de Prompt",
+    "flushCache": "Limpar Cache",
+    "flushing": "Limpando…",
+    "size": "Tamanho",
+    "hits": "Acertos",
+    "evictions": "Remoções",
+    "loadingCacheStats": "Carregando estatísticas do cache…",
+    "globalProxy": "Proxy Global",
+    "globalProxyDesc": "Configure um proxy de saída global para todas as chamadas de API. Provedores individuais, combos e chaves podem sobrescrever.",
+    "noGlobalProxy": "Nenhum proxy global configurado",
+    "configure": "Configurar",
+    "globalSystemPrompt": "Prompt de Sistema Global",
+    "systemPromptDesc": "Injetado em todas as requisições no nível do proxy",
+    "saved": "Salvo",
+    "systemPromptPlaceholder": "Digite o prompt de sistema para injetar em todas as requisições...",
+    "systemPromptHint": "Este prompt é adicionado antes da mensagem de sistema de cada requisição. Use para instruções globais, diretrizes de segurança ou regras de formatação.",
+    "chars": "{count} caracteres",
+    "thinkingBudgetTitle": "Orçamento de Raciocínio",
+    "thinkingBudgetDesc": "Controle o uso de tokens de raciocínio da IA em todas as requisições",
+    "passthrough": "Passagem Direta",
+    "passthroughDesc": "Sem alterações — cliente controla orçamento de raciocínio",
+    "auto": "Automático",
+    "autoDesc": "Remove toda configuração de raciocínio — provedor decide",
+    "custom": "Personalizado",
+    "customDesc": "Define um orçamento fixo de tokens para todas as requisições",
+    "adaptive": "Adaptativo",
+    "adaptiveDesc": "Escala orçamento baseado na complexidade da requisição",
+    "tokenBudget": "Orçamento de Tokens",
+    "tokens": "tokens",
+    "baseEffortLevel": "Nível de Esforço Base",
+    "adaptiveHint": "Modo adaptativo escala a partir deste nível base baseado na quantidade de mensagens, uso de ferramentas e tamanho do prompt."
   },
   "translator": {
     "title": "Tradutor",