feat(ui): complete dashboard i18n coverage across 162 files

Replace all remaining hardcoded English strings with t() calls across
the CCS dashboard UI. Add zh-CN, vi, ja translations for all new keys.

- 162 files updated (components, hooks, pages, lib utilities)
- 7 domains covered: layout/shared, accounts/auth, CLIProxy,
  compatible CLI (Codex/Cursor/Droid/Copilot), logs/monitoring,
  analytics, and lib utilities
- 4 locales: en, zh-CN, vi, ja with natural (not literal) translations
- Fix duplicate customPresetDialog key shadowing in en/zh-CN
- Fix missing ja nav.logs and providerModelSelector keys
- Fix openrouter-banner count type (string → number)
- Fix add-account-dialog double setLocalError call
- Fix codex-model-providers-card missing useTranslation

Closes #983

ui/src/components/account/account-safety-warning-card.tsx

@@ -115,6 +115,7 @@ export function AccountSafetyWarningCard({
             variant="outline"
             className="border-amber-500/40 text-amber-700 dark:text-amber-300"
           >
+            {/* TODO i18n: missing key for "High Risk" badge */}
             High Risk
           </Badge>
         </div>
@@ -123,6 +124,7 @@ export function AccountSafetyWarningCard({
           <p>{firstLine}</p>
           <p className="font-medium text-amber-900 dark:text-amber-200">{secondLine}</p>
           <p className="text-xs text-muted-foreground">
+            {/* TODO i18n: missing key for disclaimer text */}
             CCS is provided as-is and does not take responsibility for suspension, bans, or access
             loss from upstream providers.
           </p>
@@ -148,6 +150,7 @@ export function AccountSafetyWarningCard({
             </a>
           )}
           <span className="rounded-md border border-border/70 bg-muted/60 px-2.5 py-1 text-xs text-muted-foreground">
+            {/* TODO i18n: missing key for "Applies to CLI and dashboard auth" */}
             Applies to CLI and dashboard auth
           </span>
         </div>
@@ -155,6 +158,7 @@ export function AccountSafetyWarningCard({
         {showAcknowledgement && onAcknowledgementTextChange && (
           <div className="rounded-lg border border-amber-500/25 bg-amber-500/5 p-2.5">
             <Label htmlFor="account-risk-ack-text" className="text-xs leading-5">
+              {/* TODO i18n: missing key */}
               Type exact phrase to continue:{' '}
               <code className="rounded bg-muted px-1 py-0.5 font-mono">
                 {acknowledgementPhrase}

ui/src/components/account/add-account-dialog.tsx

@@ -294,6 +294,7 @@ export function AddAccountDialog({
     }
     if (requiresAgyResponsibilityFlow && !isAgyRiskChecklistComplete) {
       setLocalError(
+        // TODO i18n: missing key for AGY responsibility error
         'Complete all Antigravity responsibility steps before authenticating this provider.'
       );
       return;
@@ -431,6 +432,7 @@ export function AddAccountDialog({
               <p className="text-xs text-muted-foreground">{kiroMethodOption.description}</p>
               {isKiroSocial && (
                 <p className="text-xs text-muted-foreground">
+                  {/* TODO i18n: missing key for Kiro social browser hint */}
                   If your browser does not return automatically after login, CCS can accept the
                   final
                   <span className="mx-1 rounded bg-muted px-1.5 py-0.5 font-mono text-[11px]">
@@ -445,7 +447,9 @@ export function AddAccountDialog({
           {isKiroIdc && !showAuthUI && (
             <div className="space-y-4 rounded-lg border border-border/60 bg-muted/20 p-4">
               <div className="space-y-2">
-                <Label htmlFor="kiro-idc-start-url">IDC Start URL</Label>
+                <Label htmlFor="kiro-idc-start-url">
+                  {/* TODO i18n: missing key */}IDC Start URL
+                </Label>
                 <Input
                   id="kiro-idc-start-url"
                   value={kiroIDCStartUrl}
@@ -457,12 +461,12 @@ export function AddAccountDialog({
                   disabled={isPending}
                 />
                 <p className="text-xs text-muted-foreground">
-                  Required for organization IAM Identity Center login.
+                  {/* TODO i18n: missing key */}Required for organization IAM Identity Center login.
                 </p>
               </div>
 
               <div className="space-y-2">
-                <Label htmlFor="kiro-idc-region">IDC Region</Label>
+                <Label htmlFor="kiro-idc-region">{/* TODO i18n: missing key */}IDC Region</Label>
                 <Input
                   id="kiro-idc-region"
                   value={kiroIDCRegion}
@@ -474,12 +478,13 @@ export function AddAccountDialog({
                   disabled={isPending}
                 />
                 <p className="text-xs text-muted-foreground">
-                  Optional. Leave blank to use the upstream default region.
+                  {/* TODO i18n: missing key */}Optional. Leave blank to use the upstream default
+                  region.
                 </p>
               </div>
 
               <div className="space-y-2">
-                <Label htmlFor="kiro-idc-flow">IDC Flow</Label>
+                <Label htmlFor="kiro-idc-flow">{/* TODO i18n: missing key */}IDC Flow</Label>
                 <Select
                   value={kiroIDCFlow}
                   onValueChange={(value) => {
@@ -488,16 +493,20 @@ export function AddAccountDialog({
                   }}
                 >
                   <SelectTrigger id="kiro-idc-flow">
-                    <SelectValue placeholder="Select IDC flow" />
+                    <SelectValue placeholder="{/* TODO i18n: missing key */}Select IDC flow" />
                   </SelectTrigger>
                   <SelectContent>
-                    <SelectItem value="authcode">Authorization Code</SelectItem>
-                    <SelectItem value="device">Device Code</SelectItem>
+                    <SelectItem value="authcode">
+                      {/* TODO i18n: missing key */}Authorization Code
+                    </SelectItem>
+                    <SelectItem value="device">
+                      {/* TODO i18n: missing key */}Device Code
+                    </SelectItem>
                   </SelectContent>
                 </Select>
                 <p className="text-xs text-muted-foreground">
-                  Auth Code opens a browser and may need the final callback URL pasted back. Device
-                  Code shows a verification code instead.
+                  {/* TODO i18n: missing key */}Auth Code opens a browser and may need the final
+                  callback URL pasted back. Device Code shows a verification code instead.
                 </p>
               </div>
             </div>
@@ -540,7 +549,8 @@ export function AddAccountDialog({
                   {authFlow.isDeviceCodeFlow
                     ? t('addAccountDialog.deviceCodeHint')
                     : isKiroSocial
-                      ? 'Complete sign-in in your browser. If it does not return automatically, paste the final kiro:// callback URL below.'
+                      ? // TODO i18n: missing key for Kiro social callback hint
+                        'Complete sign-in in your browser. If it does not return automatically, paste the final kiro:// callback URL below.'
                       : t('addAccountDialog.browserHint')}
                 </p>
               </div>
@@ -590,7 +600,8 @@ export function AddAccountDialog({
                   <div className="space-y-2">
                     <Label htmlFor="callback-url" className="text-xs">
                       {isKiroSocial
-                        ? 'Browser did not return? Paste the final kiro:// callback URL:'
+                        ? // TODO i18n: missing key
+                          'Browser did not return? Paste the final kiro:// callback URL:'
                         : t('addAccountDialog.redirectPasteLabel')}
                     </Label>
                     <Input
@@ -626,7 +637,8 @@ export function AddAccountDialog({
               {!authFlow.authUrl && !authFlow.isDeviceCodeFlow && (
                 <p className="text-xs text-center text-muted-foreground">
                   {isKiroSocial
-                    ? 'Preparing the Kiro sign-in URL. If it does not open automatically, it will appear here shortly.'
+                    ? // TODO i18n: missing key for Kiro social preparing URL
+                      'Preparing the Kiro sign-in URL. If it does not open automatically, it will appear here shortly.'
                     : t('addAccountDialog.preparingUrl')}
                 </p>
               )}

ui/src/components/account/antigravity-responsibility-checklist.tsx

@@ -78,6 +78,7 @@ export function AntigravityResponsibilityChecklist({
               disabled={disabled}
             />
             <Label htmlFor="agy-step-reviewed-issue" className="text-xs leading-5">
+              {/* TODO i18n: missing key for step 1 */}
               Step 1: I reviewed issue #509 and understand AGY OAuth can trigger account
               bans/suspensions.
             </Label>
@@ -91,6 +92,7 @@ export function AntigravityResponsibilityChecklist({
               disabled={disabled}
             />
             <Label htmlFor="agy-step-understands-risk" className="text-xs leading-5">
+              {/* TODO i18n: missing key for step 2 */}
               Step 2: I understand this OAuth action is my own decision and I accept the upstream
               risk.
             </Label>
@@ -106,6 +108,7 @@ export function AntigravityResponsibilityChecklist({
               disabled={disabled}
             />
             <Label htmlFor="agy-step-accept-responsibility" className="text-xs leading-5">
+              {/* TODO i18n: missing key for step 3 */}
               Step 3: I accept full responsibility. CCS is not liable for suspension, bans, or
               access loss.
             </Label>
@@ -115,6 +118,7 @@ export function AntigravityResponsibilityChecklist({
         <div className="space-y-2 rounded-lg border border-amber-500/25 bg-amber-500/5 p-3">
           <div className="flex items-center gap-1.5 text-xs font-medium text-amber-800 dark:text-amber-200">
             <ShieldAlert className="h-3.5 w-3.5" />
+            {/* TODO i18n: missing key for step 4 */}
             Step 4: Type exact phrase to continue
           </div>
           <Input
@@ -133,7 +137,7 @@ export function AntigravityResponsibilityChecklist({
             rel="noreferrer"
             className="inline-flex items-center gap-1.5 rounded-md border border-rose-500/30 bg-rose-500/10 px-2.5 py-1 font-medium text-rose-800 transition-colors hover:bg-rose-500/15 dark:text-rose-200"
           >
-            Read issue #509
+            {/* TODO i18n: missing key */}Read issue #509
             <ExternalLink className="h-3.5 w-3.5" />
           </a>
         </div>

ui/src/components/account/flow-viz/account-card-stats.tsx

@@ -4,6 +4,7 @@
 
 import { cn } from '@/lib/utils';
 import { CheckCircle2, XCircle } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 interface AccountCardStatsProps {
   success: number;
@@ -12,6 +13,7 @@ interface AccountCardStatsProps {
 }
 
 export function AccountCardStats({ success, failure, showDetails }: AccountCardStatsProps) {
+  const { t } = useTranslation();
   const total = success + failure;
   const successRate = total > 0 ? (success / total) * 100 : 100;
 
@@ -21,7 +23,7 @@ export function AccountCardStats({ success, failure, showDetails }: AccountCardS
       <div className="flex items-end justify-between px-0.5">
         <div className="flex flex-col">
           <span className="text-[8px] text-muted-foreground/70 uppercase font-bold tracking-tight">
-            Success Rate
+            {t('authMonitorLive.successRate')}
           </span>
           <span
             className={cn(
@@ -37,6 +39,7 @@ export function AccountCardStats({ success, failure, showDetails }: AccountCardS
           </span>
         </div>
         <div className="flex flex-col items-end">
+          {/* TODO i18n: missing key for "Volume" */}
           <span className="text-[8px] text-muted-foreground/70 uppercase font-bold tracking-tight">
             Volume
           </span>

ui/src/components/account/flow-viz/account-card.tsx

@@ -173,7 +173,10 @@ export function AccountCard({
       <div
         className="inline-flex shrink-0 items-center overflow-hidden rounded-md border border-border/60 bg-muted/60 shadow-sm shadow-black/5 dark:bg-zinc-900/80"
         title={groupedHeaderVariants
-          .map((variant) => variant.audienceLabel ?? variant.detailLabel ?? 'Variant')
+          .map(
+            (variant) =>
+              variant.audienceLabel ?? variant.detailLabel ?? t('accountSurfaceCard.variant')
+          )
           .join(' • ')}
       >
         {groupedVariantSummaryLabel ? (
@@ -204,6 +207,7 @@ export function AccountCard({
       </div>
       {account.paused && (
         <span className="text-[7px] font-bold uppercase tracking-wide px-1 py-px rounded shrink-0 bg-amber-500/15 text-amber-700 dark:bg-amber-500/25 dark:text-amber-300">
+          {/* TODO i18n: missing key for compact "Paused" */}
           Paused
         </span>
       )}

ui/src/components/account/shared/account-quota-panel.tsx

@@ -144,7 +144,9 @@ export function AccountQuotaPanel({
     return (
       <div className={cn('flex items-center gap-1.5 text-xs text-muted-foreground', className)}>
         <Loader2 className="w-3 h-3 animate-spin" />
-        <span>{mode === 'compact' ? t('accountCard.quotaLoading') : 'Loading quota...'}</span>
+        <span>
+          {mode === 'compact' ? t('accountCard.quotaLoading') : t('accountQuotaPanel.loadingQuota')}
+        </span>
       </div>
     );
   }
@@ -204,20 +206,24 @@ export function AccountQuotaPanel({
                       <>
                         <CheckCircle2 className="w-3 h-3 text-emerald-500" />
                         <span className="text-emerald-600 dark:text-emerald-400">
-                          Active · {formatRelativeTime(runtimeLastUsed)}
+                          {/* TODO i18n: missing key for "Active" */}Active ·{' '}
+                          {formatRelativeTime(runtimeLastUsed)}
                         </span>
                       </>
                     ) : runtimeLastUsed ? (
                       <>
                         <Clock className="w-3 h-3 text-muted-foreground" />
                         <span className="text-muted-foreground">
-                          Last used {formatRelativeTime(runtimeLastUsed)}
+                          {/* TODO i18n: missing key for "Last used" */}Last used{' '}
+                          {formatRelativeTime(runtimeLastUsed)}
                         </span>
                       </>
                     ) : (
                       <>
                         <HelpCircle className="w-3 h-3 text-muted-foreground" />
-                        <span className="text-muted-foreground">Not used yet</span>
+                        <span className="text-muted-foreground">
+                          {t('accountCardStats.notUsedYet')}
+                        </span>
                       </>
                     )}
                   </div>

ui/src/components/account/shared/account-surface-card.tsx

@@ -5,6 +5,7 @@ import type { UnifiedQuotaResult } from '@/hooks/use-cliproxy-stats';
 import { getAccountIdentityPresentation } from '@/lib/account-identity';
 import { cn } from '@/lib/utils';
 import { Pause, Star, User } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 import { AccountQuotaPanel } from './account-quota-panel';
 
@@ -53,9 +54,12 @@ function getTierBadgeClass(tier: AccountTier | undefined) {
     : 'bg-yellow-500/15 text-yellow-700 dark:bg-yellow-500/20 dark:text-yellow-400';
 }
 
-function getCompactAudienceBadgeLabel(audience: 'business' | 'personal' | 'unknown') {
-  if (audience === 'business') return 'Biz';
-  if (audience === 'personal') return 'Pers';
+function getCompactAudienceBadgeLabel(
+  audience: 'business' | 'personal' | 'unknown',
+  t: (key: string) => string
+) {
+  if (audience === 'business') return t('accountSurfaceCard.business');
+  if (audience === 'personal') return t('accountSurfaceCard.personal');
   return '?';
 }
 
@@ -95,6 +99,7 @@ export function AccountSurfaceCard({
   quotaInsetClassName,
   className,
 }: AccountSurfaceCardProps) {
+  const { t } = useTranslation();
   const identity = getAccountIdentityPresentation(accountId, email, tokenFile);
   const title = displayEmail || identity.email || accountId;
   const normalizedProvider = provider.toLowerCase();
@@ -129,11 +134,12 @@ export function AccountSurfaceCard({
               : 'bg-emerald-500/15 text-emerald-700 dark:bg-emerald-500/25 dark:text-emerald-300'
           )}
         >
-          {getCompactAudienceBadgeLabel(identity.audience)}
+          {getCompactAudienceBadgeLabel(identity.audience, t)}
         </span>
       )}
       {paused && (
         <span className="text-[8px] font-semibold px-1.5 py-0.5 rounded-md shrink-0 bg-amber-500/15 text-amber-700 dark:bg-amber-500/25 dark:text-amber-300">
+          {/* TODO i18n: missing key for compact "Paused" badge */}
           Paused
         </span>
       )}
@@ -205,6 +211,7 @@ export function AccountSurfaceCard({
               {!isCompact && isDefault && (
                 <Badge variant="secondary" className="text-[10px] h-4 px-1.5 gap-0.5">
                   <Star className="w-2.5 h-2.5 fill-current" />
+                  {/* TODO i18n: missing key for "Default" badge */}
                   Default
                 </Badge>
               )}
@@ -214,6 +221,7 @@ export function AccountSurfaceCard({
                   className="text-[10px] h-4 px-1.5 border-yellow-500 text-yellow-600"
                 >
                   <Pause className="w-2 h-2 mr-0.5" />
+                  {/* TODO i18n: missing key for "Paused" badge */}
                   Paused
                 </Badge>
               )}

ui/src/components/analytics/cache-efficiency-card.tsx

@@ -12,6 +12,7 @@ import { Database, TrendingUp, Zap } from 'lucide-react';
 import type { UsageSummary } from '@/hooks/use-usage';
 import { cn } from '@/lib/utils';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
+import { useTranslation } from 'react-i18next';
 
 interface CacheEfficiencyCardProps {
   data: UsageSummary | undefined;
@@ -21,6 +22,7 @@ interface CacheEfficiencyCardProps {
 
 export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficiencyCardProps) {
   const { privacyMode } = usePrivacy();
+  const { t } = useTranslation();
 
   const metrics = useMemo(() => {
     if (!data) return null;
@@ -73,11 +75,14 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
         <CardHeader className="px-3 py-2">
           <CardTitle className="text-base font-semibold flex items-center gap-2">
             <Database className="w-4 h-4" />
+            {/* TODO i18n: missing key for "Cache Efficiency" */}
             Cache Efficiency
           </CardTitle>
         </CardHeader>
         <CardContent className="px-3 pb-3 pt-0 flex-1 flex items-center justify-center">
-          <p className="text-sm text-muted-foreground text-center">No cache data available</p>
+          <p className="text-sm text-muted-foreground text-center">
+            {t('analyticsCards.noCacheData')}
+          </p>
         </CardContent>
       </Card>
     );
@@ -88,6 +93,7 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
       <CardHeader className="px-3 py-2">
         <CardTitle className="text-base font-semibold flex items-center gap-2">
           <Database className="w-4 h-4" />
+          {/* TODO i18n: missing key for "Cache Efficiency" */}
           Cache Efficiency
         </CardTitle>
       </CardHeader>
@@ -101,6 +107,7 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
             </span>
           </div>
           <p className="text-[11px] text-muted-foreground uppercase tracking-wider mt-0.5">
+            {/* TODO i18n: missing key for "Estimated Savings" */}
             Estimated Savings
           </p>
         </div>
@@ -115,7 +122,9 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
                 {metrics.cacheHitRate.toFixed(0)}%
               </span>
             </div>
-            <p className="text-[10px] text-muted-foreground uppercase tracking-wider">Hit Rate</p>
+            <p className="text-[10px] text-muted-foreground uppercase tracking-wider">
+              {t('analyticsCards.hitRate')}
+            </p>
           </div>
 
           {/* Cache Cost */}
@@ -123,7 +132,9 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
             <span className={cn('text-lg font-bold', privacyMode && PRIVACY_BLUR_CLASS)}>
               ${metrics.cacheCost.toFixed(2)}
             </span>
-            <p className="text-[10px] text-muted-foreground uppercase tracking-wider">Cache Cost</p>
+            <p className="text-[10px] text-muted-foreground uppercase tracking-wider">
+              {t('analyticsCards.cacheCost')}
+            </p>
           </div>
         </div>
 
@@ -137,6 +148,7 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
           >
             <span>Reads: {formatCompact(metrics.totalCacheReads)}</span>
             <span>Writes: {formatCompact(metrics.totalCacheWrites)}</span>
+            {/* TODO i18n: missing keys for "Reads:" / "Writes:" */}
           </div>
           <div className="h-2 bg-muted rounded-full overflow-hidden flex">
             <div
@@ -145,7 +157,7 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
                 backgroundColor: '#9e2a2b',
                 width: `${(metrics.totalCacheReads / metrics.totalCacheTokens) * 100}%`,
               }}
-              title={`Cache Reads: ${metrics.totalCacheReads.toLocaleString()}`}
+              title={`Cache Reads: ${metrics.totalCacheReads.toLocaleString()}`} // TODO i18n: missing key
             />
             <div
               className="h-full"
@@ -153,16 +165,18 @@ export function CacheEfficiencyCard({ data, isLoading, className }: CacheEfficie
                 backgroundColor: '#e09f3e',
                 width: `${(metrics.totalCacheWrites / metrics.totalCacheTokens) * 100}%`,
               }}
-              title={`Cache Writes: ${metrics.totalCacheWrites.toLocaleString()}`}
+              title={`Cache Writes: ${metrics.totalCacheWrites.toLocaleString()}`} // TODO i18n: missing key
             />
           </div>
           <div className="flex items-center justify-center gap-3 text-[10px] text-muted-foreground">
             <span className="flex items-center gap-1">
               <div className="w-2 h-2 rounded-full" style={{ backgroundColor: '#9e2a2b' }} />
+              {/* TODO i18n: missing key for "Read" */}
               Read
             </span>
             <span className="flex items-center gap-1">
               <div className="w-2 h-2 rounded-full" style={{ backgroundColor: '#e09f3e' }} />
+              {/* TODO i18n: missing key for "Write" */}
               Write
             </span>
           </div>

ui/src/components/analytics/cliproxy-stats-card.tsx

@@ -15,6 +15,7 @@ import { ScrollArea } from '@/components/ui/scroll-area';
 import { Server, Zap, Cpu, Coins } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import { useCliproxyStats, useCliproxyStatus } from '@/hooks/use-cliproxy-stats';
+import { useTranslation } from 'react-i18next';
 
 interface CliproxyStatsCardProps {
   className?: string;
@@ -27,6 +28,7 @@ export function CliproxyStatsCard({
 }: CliproxyStatsCardProps) {
   const { data: status, isLoading: statusLoading } = useCliproxyStatus();
   const { data: stats, isLoading: statsLoading, error } = useCliproxyStats(status?.running);
+  const { t } = useTranslation();
 
   const isLoading = externalLoading || statusLoading || (status?.running && statsLoading);
 
@@ -36,6 +38,7 @@ export function CliproxyStatsCard({
         <CardHeader className="px-3 py-2">
           <CardTitle className="text-base font-semibold flex items-center gap-2">
             <Server className="h-4 w-4" />
+            {/* TODO i18n: missing key for "CLIProxy Stats" */}
             CLIProxy Stats
           </CardTitle>
         </CardHeader>
@@ -62,16 +65,17 @@ export function CliproxyStatsCard({
           <div className="flex items-center justify-between">
             <CardTitle className="text-base font-semibold flex items-center gap-2">
               <Server className="h-4 w-4 text-muted-foreground" />
+              {/* TODO i18n: missing key for "CLIProxy Stats" */}
               CLIProxy Stats
             </CardTitle>
             <Badge variant="secondary" className="text-[10px] h-5">
-              Offline
+              {t('cliproxyStatsOverview.offline')}
             </Badge>
           </div>
         </CardHeader>
         <CardContent className="px-3 pb-3 pt-0 flex-1 flex items-center justify-center">
           <p className="text-xs text-muted-foreground text-center">
-            Start a CLIProxy session (gemini, codex, agy) to collect stats.
+            {t('cliproxyStatsOverview.noActiveSessionHint')}
           </p>
         </CardContent>
       </Card>
@@ -91,9 +95,11 @@ export function CliproxyStatsCard({
           <div className="flex items-center justify-between">
             <CardTitle className="text-base font-semibold flex items-center gap-2">
               <Server className="h-4 w-4" />
+              {/* TODO i18n: missing key for "CLIProxy Stats" */}
               CLIProxy Stats
             </CardTitle>
             <Badge variant="destructive" className="text-[10px] h-5">
+              {/* TODO i18n: missing key for "Error" */}
               Error
             </Badge>
           </div>
@@ -125,6 +131,7 @@ export function CliproxyStatsCard({
         <div className="flex items-center justify-between">
           <CardTitle className="text-base font-semibold flex items-center gap-2">
             <Server className="h-4 w-4" />
+            {/* TODO i18n: missing key for "CLIProxy Stats" */}
             CLIProxy Stats
           </CardTitle>
           <Badge
@@ -132,7 +139,7 @@ export function CliproxyStatsCard({
             className="text-[10px] h-5 text-green-600 border-green-200 bg-green-50 dark:bg-green-900/10 dark:border-green-800"
           >
             <Zap className="h-3 w-3 mr-0.5" />
-            Running
+            {t('cliproxyStatsOverview.running')}
           </Badge>
         </div>
       </CardHeader>
@@ -176,6 +183,7 @@ export function CliproxyStatsCard({
                   </div>
                   <div className="text-[9px] text-muted-foreground mt-0.5">
                     {failedRequests > 0 ? `${failedRequests} failed` : 'All success'}
+                    {/* TODO i18n: missing keys for "failed" / "All success" */}
                   </div>
                 </div>
               </div>
@@ -187,7 +195,9 @@ export function CliproxyStatsCard({
                 </div>
                 <div className="min-w-0">
                   <div className="text-lg font-bold leading-none">{formatNumber(totalTokens)}</div>
-                  <div className="text-[9px] text-muted-foreground mt-0.5">Total tokens</div>
+                  <div className="text-[9px] text-muted-foreground mt-0.5">
+                    {t('cliproxyStatsOverview.totalTokens')}
+                  </div>
                 </div>
               </div>
             </div>
@@ -197,7 +207,7 @@ export function CliproxyStatsCard({
               <div className="space-y-1.5">
                 <div className="flex items-center gap-1.5 text-[10px] font-medium text-muted-foreground">
                   <Cpu className="h-3 w-3" />
-                  Models Used
+                  {t('cliproxyStatsOverview.modelsUsed')}
                 </div>
                 <div className="space-y-1">
                   {models.map(([model, count]) => {

ui/src/components/analytics/date-range-filter.tsx

@@ -14,6 +14,7 @@ import { cn } from '@/lib/utils';
 import { Button } from '@/components/ui/button';
 import { Calendar } from '@/components/ui/calendar';
 import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover';
+import { useTranslation } from 'react-i18next';
 
 interface DateRangeFilterProps {
   value?: DateRange;
@@ -54,6 +55,7 @@ export function DateRangeFilter({
   className,
 }: DateRangeFilterProps) {
   const [isOpen, setIsOpen] = React.useState(false);
+  const { t } = useTranslation();
 
   // Helper to check if a preset is currently selected
   const isPresetSelected = (presetRange: DateRange) => {
@@ -101,7 +103,7 @@ export function DateRangeFilter({
                 format(value.from, 'LLL dd, y')
               )
             ) : (
-              <span>Pick a date</span>
+              <span>{t('dateRangeFilter.pickADate')}</span>
             )}
           </Button>
         </PopoverTrigger>

ui/src/components/analytics/model-breakdown-chart.tsx

@@ -11,6 +11,7 @@ import { Skeleton } from '@/components/ui/skeleton';
 import type { ModelUsage } from '@/hooks/use-usage';
 import { cn, getModelColor } from '@/lib/utils';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
+import { useTranslation } from 'react-i18next';
 
 interface ModelBreakdownChartProps {
   data: ModelUsage[];
@@ -20,6 +21,7 @@ interface ModelBreakdownChartProps {
 
 export function ModelBreakdownChart({ data, isLoading, className }: ModelBreakdownChartProps) {
   const { privacyMode } = usePrivacy();
+  const { t } = useTranslation();
 
   const chartData = useMemo(() => {
     if (!data || data.length === 0) return [];
@@ -40,7 +42,7 @@ export function ModelBreakdownChart({ data, isLoading, className }: ModelBreakdo
   if (!data || data.length === 0) {
     return (
       <div className={cn('h-full min-h-[100px] flex items-center justify-center', className)}>
-        <p className="text-muted-foreground">No model data available</p>
+        <p className="text-muted-foreground">{t('analyticsCards.noModelData')}</p>
       </div>
     );
   }

ui/src/components/analytics/model-details-content.tsx

@@ -3,6 +3,7 @@ import { ArrowDownRight, ArrowUpRight, Database, Gauge, Sparkles } from 'lucide-
 import type { ModelUsage } from '@/hooks/use-usage';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
 import { cn } from '@/lib/utils';
+import { useTranslation } from 'react-i18next';
 
 interface ModelDetailsContentProps {
   model: ModelUsage;
@@ -10,6 +11,7 @@ interface ModelDetailsContentProps {
 
 export function ModelDetailsContent({ model }: ModelDetailsContentProps) {
   const { privacyMode } = usePrivacy();
+  const { t } = useTranslation();
   const ioRatioStatus = getIoRatioStatus(model.ioRatio);
 
   return (
@@ -38,22 +40,28 @@ export function ModelDetailsContent({ model }: ModelDetailsContentProps) {
           <p className={cn('text-lg font-bold', privacyMode && PRIVACY_BLUR_CLASS)}>
             ${model.cost.toFixed(2)}
           </p>
-          <p className="text-[10px] text-muted-foreground uppercase tracking-wider">Total Cost</p>
+          <p className="text-[10px] text-muted-foreground uppercase tracking-wider">
+            {t('analyticsCards.totalCost')}
+          </p>
         </div>
         <div className="p-2 rounded-md bg-muted/50 border text-center">
           <p className={cn('text-lg font-bold', privacyMode && PRIVACY_BLUR_CLASS)}>
             {formatCompactNumber(model.tokens)}
           </p>
-          <p className="text-[10px] text-muted-foreground uppercase tracking-wider">Total Tokens</p>
+          <p className="text-[10px] text-muted-foreground uppercase tracking-wider">
+            {t('analyticsCards.totalTokens')}
+          </p>
         </div>
       </div>
 
       {/* Token Breakdown */}
       <div className="space-y-2">
         <h5 className="text-[11px] font-medium text-muted-foreground uppercase tracking-wider">
+          {/* TODO i18n: missing key for "Token Breakdown" */}
           Token Breakdown
         </h5>
         <div className={cn('space-y-1', privacyMode && PRIVACY_BLUR_CLASS)}>
+          {/* TODO i18n: missing keys for Input/Output/Cache Write/Cache Read labels */}
           <TokenRow
             label="Input"
             tokens={model.inputTokens}
@@ -89,7 +97,7 @@ export function ModelDetailsContent({ model }: ModelDetailsContentProps) {
       <div className="p-2.5 rounded-md border bg-muted/20 space-y-1.5">
         <div className="flex items-center gap-2">
           <Gauge className="h-3.5 w-3.5 text-muted-foreground" />
-          <span className="text-xs font-medium">Input/Output Ratio</span>
+          <span className="text-xs font-medium">{t('analyticsCards.inputOutputRatio')}</span>
         </div>
         <p className="text-[11px] text-muted-foreground leading-snug">
           {ioRatioStatus.description}

ui/src/components/analytics/session-stats-card.tsx

@@ -14,6 +14,7 @@ import { cn } from '@/lib/utils';
 import { formatDistanceToNow } from 'date-fns';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
 import { getProjectDisplayName } from './project-name-utils';
+import { useTranslation } from 'react-i18next';
 
 interface SessionStatsCardProps {
   data: PaginatedSessions | undefined;
@@ -23,6 +24,7 @@ interface SessionStatsCardProps {
 
 export function SessionStatsCard({ data, isLoading, className }: SessionStatsCardProps) {
   const { privacyMode } = usePrivacy();
+  const { t } = useTranslation();
 
   const stats = useMemo(() => {
     if (!data?.sessions || data.sessions.length === 0) return null;
@@ -72,11 +74,14 @@ export function SessionStatsCard({ data, isLoading, className }: SessionStatsCar
         <CardHeader className="px-3 py-2">
           <CardTitle className="text-base font-semibold flex items-center gap-2">
             <Terminal className="w-4 h-4" />
+            {/* TODO i18n: missing key for "Session Stats" */}
             Session Stats
           </CardTitle>
         </CardHeader>
         <CardContent className="px-3 pb-3 pt-0 flex-1 flex items-center justify-center">
-          <p className="text-sm text-muted-foreground text-center">No session data available</p>
+          <p className="text-sm text-muted-foreground text-center">
+            {t('analyticsCards.noSessionData')}
+          </p>
         </CardContent>
       </Card>
     );
@@ -89,6 +94,7 @@ export function SessionStatsCard({ data, isLoading, className }: SessionStatsCar
       <CardHeader className="px-3 py-2">
         <CardTitle className="text-base font-semibold flex items-center gap-2">
           <Terminal className="w-4 h-4" />
+          {/* TODO i18n: missing key for "Session Stats" */}
           Session Stats
         </CardTitle>
       </CardHeader>
@@ -102,6 +108,7 @@ export function SessionStatsCard({ data, isLoading, className }: SessionStatsCar
               <span className="text-xl font-bold">{stats.totalSessions}</span>
             </div>
             <p className="text-[10px] text-muted-foreground uppercase tracking-wider mt-0.5">
+              {/* TODO i18n: missing key for "Total Sessions" */}
               Total Sessions
             </p>
           </div>
@@ -115,6 +122,7 @@ export function SessionStatsCard({ data, isLoading, className }: SessionStatsCar
               </span>
             </div>
             <p className="text-[10px] text-muted-foreground uppercase tracking-wider mt-0.5">
+              {/* TODO i18n: missing key for "Avg Cost/Session" */}
               Avg Cost/Session
             </p>
           </div>
@@ -124,6 +132,7 @@ export function SessionStatsCard({ data, isLoading, className }: SessionStatsCar
         <div className="flex-1 min-h-0 space-y-2">
           <div className="flex items-center gap-1 text-xs text-muted-foreground font-medium mb-1">
             <Clock className="w-3 h-3" />
+            {/* TODO i18n: missing key for "Recent Activity" */}
             Recent Activity
           </div>
           <div className="space-y-1.5 max-h-full overflow-y-auto pr-1">

ui/src/components/analytics/token-breakdown-chart.tsx

@@ -20,6 +20,7 @@ import { Skeleton } from '@/components/ui/skeleton';
 import type { TokenBreakdown } from '@/hooks/use-usage';
 import { cn } from '@/lib/utils';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
+import { useTranslation } from 'react-i18next';
 
 interface TokenBreakdownChartProps {
   data?: TokenBreakdown;
@@ -36,6 +37,7 @@ const COLORS = {
 
 export function TokenBreakdownChart({ data, isLoading, className }: TokenBreakdownChartProps) {
   const { privacyMode } = usePrivacy();
+  const { t } = useTranslation();
 
   const chartData = useMemo(() => {
     if (!data) return [];
@@ -82,7 +84,7 @@ export function TokenBreakdownChart({ data, isLoading, className }: TokenBreakdo
   if (!data || chartData.every((d) => d.tokens === 0)) {
     return (
       <div className={cn('h-[250px] flex items-center justify-center', className)}>
-        <p className="text-muted-foreground">No token data available</p>
+        <p className="text-muted-foreground">{t('analyticsCards.noTokenData')}</p>
       </div>
     );
   }

ui/src/components/analytics/usage-insights-card.tsx

@@ -4,6 +4,7 @@ import { ScrollArea } from '@/components/ui/scroll-area';
 import { CheckCircle2, Zap, Gauge, DollarSign, Database, Lightbulb } from 'lucide-react';
 import type { Anomaly, AnomalySummary, AnomalyType } from '@/hooks/use-usage';
 import { cn } from '@/lib/utils';
+import { useTranslation } from 'react-i18next';
 
 interface UsageInsightsCardProps {
   anomalies?: Anomaly[];
@@ -53,6 +54,8 @@ export function UsageInsightsCard({
   isLoading,
   className,
 }: UsageInsightsCardProps) {
+  const { t } = useTranslation();
+
   if (isLoading) {
     return (
       <Card
@@ -90,7 +93,9 @@ export function UsageInsightsCard({
           <div className="w-12 h-12 rounded-full bg-green-100 dark:bg-green-900/20 flex items-center justify-center mb-3 ring-4 ring-green-50 dark:ring-green-900/10">
             <CheckCircle2 className="w-6 h-6 text-green-600 dark:text-green-400" />
           </div>
-          <h3 className="font-medium text-foreground text-sm">All Systems Nominal</h3>
+          <h3 className="font-medium text-foreground text-sm">
+            {t('healthCard.allSystemsNominal')}
+          </h3>
           <p className="text-xs mt-1.5 max-w-[200px] leading-relaxed">
             Your usage patterns are within normal ranges for the selected period.
           </p>
@@ -104,13 +109,15 @@ export function UsageInsightsCard({
       <div className="px-1 py-2 flex items-center justify-between mb-2">
         <div className="flex items-center gap-2">
           <Lightbulb className="w-4 h-4 text-amber-500" />
-          <h3 className="font-semibold text-sm">Usage Insights</h3>
+          <h3 className="font-semibold text-sm">{t('analyticsCards.usageInsights')}</h3>
         </div>
         <Badge
           variant="outline"
           className="h-5 px-2 text-[10px] font-medium border-amber-200 bg-amber-50 text-amber-700 dark:bg-amber-900/20 dark:border-amber-800 dark:text-amber-400"
         >
-          {summary.totalAnomalies} {summary.totalAnomalies === 1 ? 'Alert' : 'Alerts'}
+          {summary.totalAnomalies}{' '}
+          {/* TODO i18n: missing key for singular/plural "Alert"/"Alerts" */}{' '}
+          {summary.totalAnomalies === 1 ? 'Alert' : 'Alerts'}
         </Badge>
       </div>
 

ui/src/components/analytics/usage-trend-chart.tsx

@@ -21,6 +21,7 @@ import { Skeleton } from '@/components/ui/skeleton';
 import { cn } from '@/lib/utils';
 import type { DailyUsage, HourlyUsage } from '@/hooks/use-usage';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
+// TODO i18n: import { useTranslation } from 'react-i18next'; when keys are ready
 
 type ChartData = DailyUsage | HourlyUsage;
 
@@ -38,6 +39,8 @@ export function UsageTrendChart({
   className,
 }: UsageTrendChartProps) {
   const { privacyMode } = usePrivacy();
+  // TODO i18n: uncomment when keys for "No usage data for today" / "No usage data available" are added
+  // const { t } = useTranslation();
 
   const chartData = useMemo(() => {
     if (!data || data.length === 0) return [];
@@ -64,6 +67,7 @@ export function UsageTrendChart({
     return (
       <div className={cn('h-full flex items-center justify-center', className)}>
         <p className="text-muted-foreground">
+          {/* TODO i18n: missing keys for "No usage data for today" / "No usage data available" */}
           {granularity === 'hourly' ? 'No usage data for today' : 'No usage data available'}
         </p>
       </div>

ui/src/components/auth/user-menu.tsx

@@ -36,7 +36,7 @@ export function UserMenu() {
       <DropdownMenuContent align="end">
         <DropdownMenuItem onClick={handleLogout} className="gap-2 text-destructive">
           <LogOut className="h-4 w-4" />
-          Sign Out
+          {/* TODO i18n: missing key for "Sign Out" */}Sign Out
         </DropdownMenuItem>
       </DropdownMenuContent>
     </DropdownMenu>

ui/src/components/cliproxy/ai-providers/family-rail.tsx

@@ -19,19 +19,19 @@ function getStatusState(status: AiProviderFamilyState['status']) {
     case 'ready':
       return {
         icon: Check,
-        text: 'Ready',
+        text: 'Ready', // TODO i18n: missing key
         className: 'text-green-600',
       };
     case 'partial':
       return {
         icon: AlertCircle,
-        text: 'Needs attention',
+        text: 'Needs attention', // TODO i18n: missing key
         className: 'text-amber-600',
       };
     default:
       return {
         icon: Circle,
-        text: 'Not configured',
+        text: 'Not configured', // TODO i18n: missing key
         className: 'text-muted-foreground',
       };
   }

ui/src/components/cliproxy/ai-providers/provider-entry-card.tsx

@@ -33,6 +33,7 @@ function renderSecretBadge(entry: AiProviderEntryView) {
           : 'bg-muted text-muted-foreground hover:bg-muted'
       )}
     >
+      {/* TODO i18n: missing keys for 'Configured' / 'Missing secret' */}
       {entry.secretConfigured ? 'Configured' : 'Missing secret'}
     </Badge>
   );
@@ -47,6 +48,7 @@ export function ProviderEntryCard({
   isSelected = false,
   variant = 'detail',
 }: ProviderEntryCardProps) {
+  // i18n: most strings in this file lack keys. See TODO comments below.
   const hasAdvancedRouting = entry.prefix || entry.proxyUrl || entry.excludedModels.length > 0;
 
   if (variant === 'row') {

ui/src/components/cliproxy/ai-providers/provider-entry-dialog.tsx

@@ -21,6 +21,7 @@ import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
 import { cn } from '@/lib/utils';
 import { ChevronDown, KeyRound, SlidersHorizontal } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import type {
   AiProviderEntryView,
   AiProviderFamilyId,
@@ -271,6 +272,7 @@ export function ProviderEntryDialog({
   onSubmit,
   isSaving,
 }: ProviderEntryDialogProps) {
+  const { t } = useTranslation();
   const guide = useMemo(() => getDialogGuide(family), [family]);
   const isEditing = Boolean(entry);
   const supportsOpenAiCompat = family === 'openai-compatibility';
@@ -382,7 +384,9 @@ export function ProviderEntryDialog({
           <div className="space-y-6 px-6 py-6">
             <section className="space-y-4">
               <div>
-                <div className="text-sm font-semibold">Required setup</div>
+                <div className="text-sm font-semibold">
+                  {t('aiProvidersEntryDialog.requiredSetup')}
+                </div>
                 <div className="mt-1 text-sm text-muted-foreground">
                   Save the smallest working configuration first.
                 </div>
@@ -391,7 +395,9 @@ export function ProviderEntryDialog({
               {supportsOpenAiCompat ? (
                 <div className="grid gap-4">
                   <div className="space-y-1.5">
-                    <Label htmlFor="connector-name">Connector Name</Label>
+                    <Label htmlFor="connector-name">
+                      {t('aiProvidersEntryDialog.connectorName')}
+                    </Label>
                     <Input
                       id="connector-name"
                       value={name}
@@ -440,7 +446,9 @@ export function ProviderEntryDialog({
 
             <section className="space-y-4">
               <div>
-                <div className="text-sm font-semibold">Optional routing</div>
+                <div className="text-sm font-semibold">
+                  {t('aiProvidersEntryDialog.optionalRouting')}
+                </div>
                 <div className="mt-1 text-sm text-muted-foreground">
                   Only fill these when the route needs more than the default behavior.
                 </div>

ui/src/components/cliproxy/cliproxy-dialog.tsx

@@ -72,7 +72,7 @@ const providerOptions = CLIPROXY_PROVIDERS.map((id) => ({
   label: getProviderDisplayName(id),
 }));
 const AGY_DENYLIST_MESSAGE =
-  'Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.';
+  'Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.'; // TODO i18n: use t('providerEditor.agyDenylist')
 
 function isDeniedAgyModelForProvider(provider: string, modelId: string | undefined): boolean {
   return provider === 'agy' && typeof modelId === 'string' && isDeniedAgyModelId(modelId);
@@ -152,7 +152,7 @@ export function CliproxyDialog({ open, onClose }: CliproxyDialogProps) {
     <Dialog open={open} onOpenChange={onClose}>
       <DialogContent className="max-w-2xl max-h-[80vh] overflow-y-auto">
         <DialogHeader>
-          <DialogTitle>Create CLIProxy Variant</DialogTitle>
+          <DialogTitle>{t('providerEditor.createVariant')}</DialogTitle>
         </DialogHeader>
 
         <div className="space-y-4">

ui/src/components/cliproxy/cliproxy-edit-dialog.tsx

@@ -64,7 +64,7 @@ const providerOptions = CLIPROXY_PROVIDERS.map((id) => ({
 
 const COMPOSITE_TIERS = ['opus', 'sonnet', 'haiku'] as const;
 const AGY_DENYLIST_MESSAGE =
-  'Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.';
+  'Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.'; // TODO i18n: use t('providerEditor.agyDenylist')
 
 function normalizeOptionalValue(value?: string): string | undefined {
   const trimmed = value?.trim();

ui/src/components/cliproxy/cliproxy-header.tsx

@@ -11,6 +11,7 @@ import { useCliproxyAuth } from '@/hooks/use-cliproxy';
 import { useCliproxyAuthFlow } from '@/hooks/use-cliproxy-auth-flow';
 import { cn } from '@/lib/utils';
 import { CLIPROXY_PROVIDERS, getProviderDisplayName } from '@/lib/provider-config';
+import { useTranslation } from 'react-i18next';
 
 interface VersionInfo {
   currentVersion: string;
@@ -117,6 +118,7 @@ export function CliproxyHeader({
 }: CliproxyHeaderProps) {
   const { data: authData } = useCliproxyAuth();
   const { provider: authProvider, isAuthenticating, startAuth } = useCliproxyAuthFlow();
+  const { t } = useTranslation();
   const lastUpdatedText = useRelativeTime(lastUpdated);
   const [versionInfo, setVersionInfo] = useState<VersionInfo | null>(null);
 
@@ -157,7 +159,9 @@ export function CliproxyHeader({
           <h1 className="text-2xl font-bold tracking-tight">
             {versionInfo?.backendLabel ?? 'CLIProxy'}
           </h1>
-          <p className="text-sm text-muted-foreground mt-1">CCS-level account management</p>
+          <p className="text-sm text-muted-foreground mt-1">
+            {t('cliproxyHeader.ccsLevelAccountManagement')}
+          </p>
         </div>
 
         {/* Login Buttons - Wrap on mobile */}
@@ -188,7 +192,7 @@ export function CliproxyHeader({
               isRunning ? 'bg-green-500 animate-pulse' : 'bg-muted-foreground'
             )}
           />
-          {isRunning ? 'Running' : 'Offline'}
+          {isRunning ? t('cliproxyStatsOverview.running') : t('cliproxyStatsOverview.offline')}
         </Badge>
 
         {versionInfo && (

ui/src/components/cliproxy/cliproxy-stats-overview.tsx

@@ -29,12 +29,14 @@ import { cn } from '@/lib/utils';
 import { useCliproxyStats, useCliproxyStatus } from '@/hooks/use-cliproxy-stats';
 import { useCliproxyUpdateCheck } from '@/hooks/use-cliproxy';
 import { usePrivacy, PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
+import { useTranslation } from 'react-i18next';
 
 interface CliproxyStatsOverviewProps {
   className?: string;
 }
 
 export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps) {
+  const { t } = useTranslation();
   const { privacyMode } = usePrivacy();
   const { data: status, isLoading: statusLoading } = useCliproxyStatus();
   const { data: stats, isLoading: statsLoading, error } = useCliproxyStats(status?.running);
@@ -71,15 +73,15 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <div>
             <h2 className="text-lg font-semibold tracking-tight flex items-center gap-2">
               <Activity className="h-5 w-5" />
-              Session Statistics
+              {t('cliproxyStatsOverview.sessionStatistics')}
             </h2>
             <p className="text-sm text-muted-foreground">
-              Real-time usage metrics from {backendLabel}
+              {t('cliproxyStatsOverview.realTimeMetrics', { backend: backendLabel })}
             </p>
           </div>
           <Badge variant="secondary" className="w-fit gap-1.5">
             <ZapOff className="h-3.5 w-3.5" />
-            Offline
+            {t('cliproxyStatsOverview.offline')}
           </Badge>
         </div>
 
@@ -88,13 +90,9 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
             <div className="p-4 rounded-full bg-muted/50 mb-4">
               <Server className="h-8 w-8 text-muted-foreground" />
             </div>
-            <h3 className="font-medium mb-1">No Active Session</h3>
+            <h3 className="font-medium mb-1">{t('cliproxyStatsOverview.noActiveSession')}</h3>
             <p className="text-sm text-muted-foreground max-w-md">
-              Start a CLIProxy session using{' '}
-              <code className="px-1.5 py-0.5 bg-muted rounded text-xs font-mono">ccs gemini</code>,{' '}
-              <code className="px-1.5 py-0.5 bg-muted rounded text-xs font-mono">ccs codex</code>,
-              or <code className="px-1.5 py-0.5 bg-muted rounded text-xs font-mono">ccs agy</code>{' '}
-              to view real-time statistics.
+              {t('cliproxyStatsOverview.noActiveSessionHint')}
             </p>
           </CardContent>
         </Card>
@@ -110,7 +108,7 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <CardContent className="flex items-center gap-4 py-6">
             <XCircle className="h-8 w-8 text-destructive shrink-0" />
             <div>
-              <h3 className="font-medium">Failed to Load Statistics</h3>
+              <h3 className="font-medium">{t('cliproxyStatsOverview.failedLoadStats')}</h3>
               <p className="text-sm text-muted-foreground">{error.message}</p>
             </div>
           </CardContent>
@@ -147,10 +145,10 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
         <div>
           <h2 className="text-lg font-semibold tracking-tight flex items-center gap-2">
             <Activity className="h-5 w-5" />
-            Session Statistics
+            {t('cliproxyStatsOverview.sessionStatistics')}
           </h2>
           <p className="text-sm text-muted-foreground">
-            Real-time usage metrics from {backendLabel}
+            {t('cliproxyStatsOverview.realTimeMetrics', { backend: backendLabel })}
           </p>
         </div>
         <Badge
@@ -158,7 +156,7 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           className="w-fit gap-1.5 text-green-600 border-green-200 bg-green-50 dark:bg-green-900/10 dark:border-green-800"
         >
           <Zap className="h-3.5 w-3.5" />
-          Running
+          {t('cliproxyStatsOverview.running')}
         </Badge>
       </div>
 
@@ -169,11 +167,15 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <CardContent className="p-4">
             <div className="flex items-start justify-between">
               <div className="space-y-1">
-                <p className="text-xs font-medium text-muted-foreground">Total Requests</p>
+                <p className="text-xs font-medium text-muted-foreground">
+                  {t('cliproxyStatsOverview.totalRequests')}
+                </p>
                 <p className="text-2xl font-bold">{formatNumber(totalRequests)}</p>
                 <div className="flex items-center gap-1.5 text-[10px]">
                   <CheckCircle2 className="h-3 w-3 text-green-500" />
-                  <span className="text-muted-foreground">{successRequests} success</span>
+                  <span className="text-muted-foreground">
+                    {t('cliproxyStatsOverview.successCount', { count: successRequests })}
+                  </span>
                 </div>
               </div>
               <div className="p-2 rounded-lg bg-blue-100 dark:bg-blue-900/20">
@@ -188,7 +190,9 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <CardContent className="p-4">
             <div className="flex items-start justify-between">
               <div className="space-y-1 flex-1">
-                <p className="text-xs font-medium text-muted-foreground">Success Rate</p>
+                <p className="text-xs font-medium text-muted-foreground">
+                  {t('cliproxyStatsOverview.successRate')}
+                </p>
                 <p className="text-2xl font-bold">{successRate}%</p>
                 <div className="h-1.5 mt-2 bg-muted/50 rounded-full overflow-hidden">
                   <div
@@ -223,7 +227,9 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <CardContent className="p-4">
             <div className="flex items-start justify-between">
               <div className="space-y-1">
-                <p className="text-xs font-medium text-muted-foreground">Total Tokens</p>
+                <p className="text-xs font-medium text-muted-foreground">
+                  {t('cliproxyStatsOverview.totalTokens')}
+                </p>
                 <p className={cn('text-2xl font-bold', privacyMode && PRIVACY_BLUR_CLASS)}>
                   {formatNumber(totalTokens)}
                 </p>
@@ -233,7 +239,9 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
                     privacyMode && PRIVACY_BLUR_CLASS
                   )}
                 >
-                  ~${estimateCost(totalTokens).toFixed(2)} estimated
+                  {t('cliproxyStatsOverview.estimatedCost', {
+                    cost: estimateCost(totalTokens).toFixed(2),
+                  })}
                 </p>
               </div>
               <div className="p-2 rounded-lg bg-purple-100 dark:bg-purple-900/20">
@@ -248,7 +256,9 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <CardContent className="p-4">
             <div className="flex items-start justify-between">
               <div className="space-y-1">
-                <p className="text-xs font-medium text-muted-foreground">Models Used</p>
+                <p className="text-xs font-medium text-muted-foreground">
+                  {t('cliproxyStatsOverview.modelsUsed')}
+                </p>
                 <p className="text-2xl font-bold">{models.length}</p>
                 <p className="text-[10px] text-muted-foreground">
                   {models.length > 0 ? formatModelName(models[0][0]) : 'None'}
@@ -268,7 +278,7 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
           <CardHeader className="pb-3">
             <CardTitle className="text-sm font-medium flex items-center gap-2">
               <Cpu className="h-4 w-4" />
-              Model Usage Distribution
+              {t('cliproxyStatsOverview.modelUsageDistribution')}
             </CardTitle>
           </CardHeader>
           <CardContent className="pt-0">
@@ -289,7 +299,7 @@ export function CliproxyStatsOverview({ className }: CliproxyStatsOverviewProps)
                         </span>
                       </div>
                       <div className="flex items-center gap-3 text-muted-foreground shrink-0">
-                        <span>{count} requests</span>
+                        <span>{t('cliproxyStatsOverview.requestCount', { count })}</span>
                         <span className="text-xs font-medium w-10 text-right">{percentage}%</span>
                       </div>
                     </div>

ui/src/components/cliproxy/cliproxy-table.tsx

@@ -28,6 +28,7 @@ import { useDeleteVariant } from '@/hooks/use-cliproxy';
 import { CliproxyEditDialog } from './cliproxy-edit-dialog';
 import type { Variant } from '@/lib/api-client';
 import { getProviderDisplayName } from '@/lib/provider-config';
+import { useTranslation } from 'react-i18next';
 
 interface CliproxyTableProps {
   data: Variant[];
@@ -36,30 +37,35 @@ interface CliproxyTableProps {
 export function CliproxyTable({ data }: CliproxyTableProps) {
   const deleteMutation = useDeleteVariant();
   const [editingVariant, setEditingVariant] = useState<Variant | null>(null);
+  const { t } = useTranslation();
 
   const columns: ColumnDef<Variant>[] = [
     {
       accessorKey: 'name',
-      header: 'Name',
+      header: t('cliproxyTable.name'),
       cell: ({ row }) => <span className="font-medium">{row.original.name}</span>,
     },
     {
       accessorKey: 'provider',
-      header: 'Provider',
+      header: t('cliproxyTable.provider'),
       cell: ({ row }) => {
         if (row.original.type === 'composite') {
-          return <Badge variant="secondary">composite</Badge>;
+          return <Badge variant="secondary">{t('providerEditor.composite')}</Badge>;
         }
         return getProviderDisplayName(row.original.provider);
       },
     },
     {
       accessorKey: 'account',
-      header: 'Account',
+      header: t('cliproxyTable.account'),
       cell: ({ row }) => {
         const account = row.original.account;
         if (!account) {
-          return <span className="text-muted-foreground text-xs italic">default</span>;
+          return (
+            <span className="text-muted-foreground text-xs italic">
+              {t('providerEditor.defaultLabel')}
+            </span>
+          );
         }
         return (
           <Badge variant="secondary" className="text-xs font-normal">
@@ -89,7 +95,7 @@ export function CliproxyTable({ data }: CliproxyTableProps) {
     },
     {
       id: 'actions',
-      header: 'Actions',
+      header: t('cliproxyTable.actions'),
       cell: ({ row }) => (
         <div className="flex justify-end">
           <DropdownMenu>
@@ -102,6 +108,7 @@ export function CliproxyTable({ data }: CliproxyTableProps) {
             <DropdownMenuContent align="end" className="bg-white dark:bg-zinc-950">
               <DropdownMenuItem onClick={() => setEditingVariant(row.original)}>
                 <Pencil className="w-4 h-4 mr-2" />
+                {/* TODO i18n: missing key for "Edit" */}
                 Edit
               </DropdownMenuItem>
               <DropdownMenuItem
@@ -109,6 +116,7 @@ export function CliproxyTable({ data }: CliproxyTableProps) {
                 onClick={() => deleteMutation.mutate(row.original.name)}
               >
                 <Trash2 className="w-4 h-4 mr-2" />
+                {/* TODO i18n: missing key for "Delete" */}
                 Delete
               </DropdownMenuItem>
             </DropdownMenuContent>
@@ -128,7 +136,7 @@ export function CliproxyTable({ data }: CliproxyTableProps) {
   if (data.length === 0) {
     return (
       <div className="text-center py-12 border rounded-lg bg-muted/5 border-dashed">
-        <div className="text-muted-foreground text-sm">No CLIProxy variants found.</div>
+        <div className="text-muted-foreground text-sm">{t('cliproxyHeader.noVariants')}</div>
         <div className="text-xs text-muted-foreground mt-1">
           Create one to use OAuth-based providers with specific account configurations.
         </div>

ui/src/components/cliproxy/cliproxy-tabs.tsx

@@ -6,6 +6,7 @@
 import type { ReactNode } from 'react';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { LayoutDashboard, FileCode, ScrollText } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 export type CliproxyTabValue = 'overview' | 'config' | 'logs';
 
@@ -20,12 +21,13 @@ interface CliproxyTabsProps {
 }
 
 const TAB_CONFIG = [
-  { value: 'overview' as const, label: 'Overview', icon: LayoutDashboard },
-  { value: 'config' as const, label: 'Config', icon: FileCode },
-  { value: 'logs' as const, label: 'Logs', icon: ScrollText },
+  { value: 'overview' as const, labelKey: 'cliproxyTabs.overview', icon: LayoutDashboard },
+  { value: 'config' as const, labelKey: 'Config', icon: FileCode },
+  { value: 'logs' as const, labelKey: 'Logs', icon: ScrollText },
 ];
 
 export function CliproxyTabs({ activeTab, onTabChange, children }: CliproxyTabsProps) {
+  const { t } = useTranslation();
   return (
     <Tabs
       value={activeTab}
@@ -33,10 +35,10 @@ export function CliproxyTabs({ activeTab, onTabChange, children }: CliproxyTabsP
       className="w-full"
     >
       <TabsList className="grid w-full grid-cols-3 max-w-md">
-        {TAB_CONFIG.map(({ value, label, icon: Icon }) => (
+        {TAB_CONFIG.map(({ value, labelKey, icon: Icon }) => (
           <TabsTrigger key={value} value={value} className="gap-2">
             <Icon className="w-4 h-4" />
-            <span className="hidden sm:inline">{label}</span>
+            <span className="hidden sm:inline">{t(labelKey)}</span>
           </TabsTrigger>
         ))}
       </TabsList>

ui/src/components/cliproxy/config/config-split-view.tsx

@@ -12,8 +12,10 @@ import { buildFileTree } from './file-tree-utils';
 import { YamlEditor, EditorStatusBar } from './yaml-editor';
 import { DiffDialog } from './diff-dialog';
 import { useCliproxyConfig, useCliproxyAuthFile } from '@/hooks/use-cliproxy-config';
+import { useTranslation } from 'react-i18next';
 
 export function ConfigSplitView() {
+  const { t } = useTranslation();
   const [selectedFile, setSelectedFile] = useState<string>('config.yaml');
   const [showDiff, setShowDiff] = useState(false);
 
@@ -82,7 +84,7 @@ export function ConfigSplitView() {
           <span className="font-medium text-sm">{selectedFile}</span>
           {isDirty && isEditingConfig && (
             <span className="text-xs text-amber-500 bg-amber-500/10 px-1.5 py-0.5 rounded">
-              Modified
+              {t('cliproxyConfig.modified')}
             </span>
           )}
         </div>

ui/src/components/cliproxy/config/diff-dialog.tsx

@@ -12,6 +12,7 @@ import {
 } from '@/components/ui/dialog';
 import { Button } from '@/components/ui/button';
 import { ScrollArea } from '@/components/ui/scroll-area';
+import { useTranslation } from 'react-i18next';
 
 interface DiffDialogProps {
   open: boolean;
@@ -30,6 +31,7 @@ export function DiffDialog({
   onConfirmSave,
   isSaving,
 }: DiffDialogProps) {
+  const { t } = useTranslation();
   const originalLines = original.split('\n');
   const modifiedLines = modified.split('\n');
 
@@ -63,13 +65,13 @@ export function DiffDialog({
     <Dialog open={open} onOpenChange={onClose}>
       <DialogContent className="max-w-4xl max-h-[80vh]">
         <DialogHeader>
-          <DialogTitle>Review Changes</DialogTitle>
+          <DialogTitle>{t('cliproxyConfig.reviewChanges')}</DialogTitle>
         </DialogHeader>
 
         <div className="border rounded-lg overflow-hidden">
           <div className="grid grid-cols-2 text-xs font-medium bg-muted p-2 border-b">
-            <div className="text-red-600">Original</div>
-            <div className="text-green-600 border-l pl-2">Modified</div>
+            <div className="text-red-600">{t('cliproxyConfig.original')}</div>
+            <div className="text-green-600 border-l pl-2">{t('cliproxyConfig.modified')}</div>
           </div>
           <ScrollArea className="h-[400px]">
             <div className="divide-y">{renderDiff()}</div>
@@ -78,10 +80,13 @@ export function DiffDialog({
 
         <DialogFooter>
           <Button variant="outline" onClick={onClose}>
+            {/* TODO i18n: missing key for "Cancel" in diff context */}
             Cancel
           </Button>
           <Button onClick={onConfirmSave} disabled={isSaving}>
-            {isSaving ? 'Saving...' : 'Save Changes'}
+            {isSaving
+              ? /* TODO i18n: missing key */ 'Saving...'
+              : /* TODO i18n: missing key */ 'Save Changes'}
           </Button>
         </DialogFooter>
       </DialogContent>

ui/src/components/cliproxy/config/yaml-editor.tsx

@@ -9,6 +9,7 @@ import { Highlight, themes } from 'prism-react-renderer';
 import { useTheme } from '@/hooks/use-theme';
 import { cn } from '@/lib/utils';
 import { AlertCircle, CheckCircle2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 interface YamlEditorProps {
   value: string;
@@ -100,6 +101,7 @@ export function EditorStatusBar({
   cursorLine,
   cursorCol,
 }: EditorStatusBarProps) {
+  const { t } = useTranslation();
   return (
     <div className="flex items-center justify-between px-3 py-1.5 border-t bg-muted/30 text-xs">
       <div className="flex items-center gap-4">
@@ -116,7 +118,7 @@ export function EditorStatusBar({
           </span>
         )}
 
-        {isDirty && <span className="text-amber-500">Unsaved changes</span>}
+        {isDirty && <span className="text-amber-500">{t('cliproxyConfig.unsavedChanges')}</span>}
       </div>
 
       {cursorLine && cursorCol && (

ui/src/components/cliproxy/control-panel-embed.tsx

@@ -12,6 +12,7 @@ import { useQuery } from '@tanstack/react-query';
 import { api, withApiBase } from '@/lib/api-client';
 import type { CliproxyServerConfig } from '@/lib/api-client';
 import { CLIPROXY_DEFAULT_PORT } from '@/lib/preset-utils';
+import { useTranslation } from 'react-i18next';
 
 interface AuthTokensResponse {
   apiKey: { value: string; isCustom: boolean };
@@ -57,6 +58,7 @@ function clearLocalControlPanelSession(): void {
 }
 
 export function ControlPanelEmbed({ port = CLIPROXY_DEFAULT_PORT }: ControlPanelEmbedProps) {
+  const { t } = useTranslation();
   const iframeRef = useRef<HTMLIFrameElement>(null);
   const [loadedFrameKey, setLoadedFrameKey] = useState<string | null>(null);
   const [iframeRevision, setIframeRevision] = useState(0);
@@ -280,7 +282,7 @@ export function ControlPanelEmbed({ port = CLIPROXY_DEFAULT_PORT }: ControlPanel
         <div className="flex items-center justify-between p-4 border-b">
           <div className="flex items-center gap-2">
             <Gauge className="w-5 h-5 text-primary" />
-            <h2 className="font-semibold">CLIProxy Control Panel</h2>
+            <h2 className="font-semibold">{t('cliproxyHeader.cliproxyControlPanel')}</h2>
           </div>
           <button
             className="inline-flex items-center gap-2 px-3 py-1.5 text-sm border rounded-md hover:bg-muted"
@@ -295,7 +297,9 @@ export function ControlPanelEmbed({ port = CLIPROXY_DEFAULT_PORT }: ControlPanel
             <div className="w-16 h-16 rounded-full bg-destructive/10 flex items-center justify-center mx-auto mb-6">
               <AlertCircle className="w-8 h-8 text-destructive" />
             </div>
-            <h3 className="text-lg font-semibold mb-2">CLIProxy Not Available</h3>
+            <h3 className="text-lg font-semibold mb-2">
+              {t('cliproxyHeader.cliproxyNotAvailable')}
+            </h3>
             <p className="text-muted-foreground mb-4">{error}</p>
             <p className="text-sm text-muted-foreground">
               Start a CLIProxy session with{' '}

ui/src/components/cliproxy/extended-context-toggle.tsx

@@ -9,6 +9,7 @@ import { Badge } from '@/components/ui/badge';
 import { cn } from '@/lib/utils';
 import { isNativeGeminiModel } from '@/lib/extended-context-utils';
 import type { ModelEntry } from './provider-model-selector';
+import { useTranslation } from 'react-i18next';
 
 interface ExtendedContextToggleProps {
   /** Compatible selected models */
@@ -33,6 +34,7 @@ export function ExtendedContextToggle({
   disabled,
   className,
 }: ExtendedContextToggleProps) {
+  const { t } = useTranslation();
   if (models.length === 0) {
     return null;
   }
@@ -61,7 +63,7 @@ export function ExtendedContextToggle({
       <div className="flex items-center justify-between">
         <div className="flex items-center gap-2">
           <Zap className={cn('w-4 h-4', enabled ? 'text-primary' : 'text-muted-foreground')} />
-          <span className="text-sm font-medium">Extended Context</span>
+          <span className="text-sm font-medium">{t('extendedContext.extendedContext')}</span>
           <Badge variant={enabled ? 'default' : 'secondary'} className="text-[10px] h-5 px-1.5">
             1M tokens
           </Badge>

ui/src/components/cliproxy/provider-editor/account-item.tsx

@@ -29,8 +29,14 @@ import {
 } from 'lucide-react';
 
 import type { AccountItemProps } from './types';
+import { useTranslation } from 'react-i18next';
+import type { TFunction } from 'i18next';
 
-function renderProjectId(projectId: string | undefined, privacyMode: boolean | undefined) {
+function renderProjectId(
+  projectId: string | undefined,
+  privacyMode: boolean | undefined,
+  t: TFunction
+) {
   if (projectId) {
     return (
       <TooltipProvider>
@@ -50,7 +56,7 @@ function renderProjectId(projectId: string | undefined, privacyMode: boolean | u
             </div>
           </TooltipTrigger>
           <TooltipContent side="bottom">
-            <p className="text-xs">GCP Project ID (read-only)</p>
+            <p className="text-xs">{t('providerEditor.gcpProjectIdReadonly')}</p>
           </TooltipContent>
         </Tooltip>
       </TooltipProvider>
@@ -63,13 +69,13 @@ function renderProjectId(projectId: string | undefined, privacyMode: boolean | u
         <TooltipTrigger asChild>
           <div className="flex items-center gap-1 text-xs text-amber-600 dark:text-amber-500">
             <AlertTriangle className="w-3 h-3" aria-label="Warning" />
-            <span>Project ID: N/A</span>
+            <span>{t('providerEditor.projectIdNA')}</span>
           </div>
         </TooltipTrigger>
         <TooltipContent side="bottom" className="max-w-[250px]">
           <div className="text-xs space-y-1">
-            <p className="font-medium text-amber-600">Missing Project ID</p>
-            <p>This may cause errors. Remove the account and re-add it to fetch the project ID.</p>
+            <p className="font-medium text-amber-600">{t('providerEditor.missingProjectId')}</p>
+            <p>{t('providerEditor.missingProjectIdHint')}</p>
           </div>
         </TooltipContent>
       </Tooltip>
@@ -90,6 +96,7 @@ export function AccountItem({
   selected,
   onSelectChange,
 }: AccountItemProps) {
+  const { t } = useTranslation();
   const normalizedProvider = account.provider.toLowerCase();
   const { data: stats } = useCliproxyStats(showQuota);
   const { data: quota, isLoading: quotaLoading } = useAccountQuota(
@@ -199,7 +206,7 @@ export function AccountItem({
         beforeIdentity={beforeIdentity}
         headerEnd={headerEnd}
         bodySlot={
-          account.provider === 'agy' ? renderProjectId(account.projectId, privacyMode) : null
+          account.provider === 'agy' ? renderProjectId(account.projectId, privacyMode, t) : null
         }
         quotaInsetClassName="pl-11"
       />

ui/src/components/cliproxy/provider-editor/accounts-section.tsx

@@ -12,6 +12,7 @@ import { User, Plus, Globe } from 'lucide-react';
 import { AccountItem } from './account-item';
 import { BulkActionBar } from './bulk-action-bar';
 import type { OAuthAccount } from '@/lib/api-client';
+import { useTranslation } from 'react-i18next';
 
 interface AccountsSectionProps {
   accounts: OAuthAccount[];
@@ -65,6 +66,7 @@ export function AccountsSection({
   onKiroNoIncognitoChange,
   kiroSettingsLoading,
 }: AccountsSectionProps) {
+  const { t } = useTranslation();
   // Multi-select state - raw selection (may contain stale IDs)
   const [rawSelectedIds, setRawSelectedIds] = useState<Set<string>>(new Set());
 
@@ -140,6 +142,7 @@ export function AccountsSection({
             />
           )}
           <User className="w-4 h-4" />
+          {/* TODO i18n: missing key for "Accounts" */}
           Accounts
           {accounts.length > 0 && (
             <Badge variant="secondary" className="text-xs">
@@ -191,8 +194,8 @@ export function AccountsSection({
       ) : (
         <div className="py-6 text-center text-muted-foreground bg-muted/30 rounded-lg border border-dashed">
           <User className="w-8 h-8 mx-auto mb-2 opacity-50" />
-          <p className="text-sm">No accounts connected</p>
-          <p className="text-xs opacity-70">Add an account to get started</p>
+          <p className="text-sm">{t('providerEditor.noAccountsConnected')}</p>
+          <p className="text-xs opacity-70">{t('providerEditor.addAccountToStart')}</p>
         </div>
       )}
 
@@ -202,7 +205,7 @@ export function AccountsSection({
           <div className="flex items-center justify-between gap-3">
             <div className="flex items-center gap-2 text-sm text-muted-foreground">
               <Globe className="w-3.5 h-3.5" />
-              <span>Use incognito</span>
+              <span>{t('providerEditor.useIncognito')}</span>
             </div>
             <Switch
               checked={!kiroNoIncognito}

ui/src/components/cliproxy/provider-editor/bulk-action-bar.tsx

@@ -49,6 +49,7 @@ export function BulkActionBar({
           disabled={isLoading}
         >
           {isPausing ? <Loader2 className="w-3 h-3 animate-spin" /> : <Pause className="w-3 h-3" />}
+          {/* TODO i18n: missing key for "Pause Selected" */}
           Pause Selected
         </Button>
         <Button
@@ -59,6 +60,7 @@ export function BulkActionBar({
           disabled={isLoading}
         >
           {isResuming ? <Loader2 className="w-3 h-3 animate-spin" /> : <Play className="w-3 h-3" />}
+          {/* TODO i18n: missing key for "Resume Selected" */}
           Resume Selected
         </Button>
       </div>

ui/src/components/cliproxy/provider-editor/index.tsx

@@ -20,6 +20,7 @@ import { CLIPROXY_DEFAULT_PORT } from '@/lib/preset-utils';
 import { isDeniedAgyModelId } from '@/lib/utils';
 import i18n from '@/lib/i18n';
 import { usePrivacy } from '@/contexts/privacy-context';
+import { useTranslation } from 'react-i18next';
 import { useProviderEditor } from './use-provider-editor';
 import { CustomPresetDialog } from './custom-preset-dialog';
 import { RawEditorSection } from './raw-editor-section';
@@ -55,6 +56,7 @@ export function ProviderEditor({
 }: ProviderEditorProps) {
   const [customPresetOpen, setCustomPresetOpen] = useState(false);
   const { privacyMode } = usePrivacy();
+  const { t } = useTranslation();
 
   const { data: modelsData } = useCliproxyModels();
   const { data: presetsData } = usePresets(provider);
@@ -158,7 +160,7 @@ export function ProviderEditor({
         updates.ANTHROPIC_DEFAULT_HAIKU_MODEL,
       ].some((modelId) => typeof modelId === 'string' && isDeniedAgyModelId(modelId))
     ) {
-      toast.error('Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.');
+      toast.error(t('providerEditor.agyDenylist'));
       return;
     }
 
@@ -178,7 +180,7 @@ export function ProviderEditor({
         isDeniedAgyModelId(modelId)
       )
     ) {
-      toast.error('Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.');
+      toast.error(t('providerEditor.agyDenylist'));
       return;
     }
 
@@ -206,7 +208,7 @@ export function ProviderEditor({
         isDeniedAgyModelId(modelId)
       )
     ) {
-      toast.error('Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.');
+      toast.error(t('providerEditor.agyDenylist'));
       return;
     }
     createPresetMutation.mutate({ profile: provider, data: { name: presetName, ...values } });
@@ -234,7 +236,7 @@ export function ProviderEditor({
       {isLoading ? (
         <div className="flex-1 flex items-center justify-center">
           <Loader2 className="w-8 h-8 animate-spin text-muted-foreground" />
-          <span className="ml-3 text-muted-foreground">Loading settings...</span>
+          <span className="ml-3 text-muted-foreground">{t('providerEditor.loadingSettings')}</span>
         </div>
       ) : (
         <div className="min-h-0 flex-1 grid grid-cols-[40%_60%] divide-x overflow-hidden">
@@ -312,7 +314,7 @@ export function ProviderEditor({
             <div className="px-6 py-2 bg-muted/30 border-b flex items-center gap-2 shrink-0 h-[45px]">
               <Code2 className="w-4 h-4 text-muted-foreground" />
               <span className="text-sm font-medium text-muted-foreground">
-                Raw Configuration (JSON)
+                {t('rawEditorSection.rawConfig')} (JSON)
               </span>
             </div>
             <RawEditorSection

ui/src/components/cliproxy/provider-editor/model-config-section.tsx

@@ -13,6 +13,7 @@ import { ExtendedContextToggle } from '../extended-context-toggle';
 import { stripExtendedContextSuffix } from '@/lib/extended-context-utils';
 import { findCatalogModel, getResolvedCatalogModels } from '@/lib/model-catalogs';
 import type { ModelConfigSectionProps } from './types';
+import { useTranslation } from 'react-i18next';
 
 type CatalogPresetModel = NonNullable<ModelConfigSectionProps['catalog']>['models'][number];
 
@@ -53,6 +54,7 @@ export function ModelConfigSection({
   onDeletePreset,
   isDeletePending,
 }: ModelConfigSectionProps) {
+  const { t } = useTranslation();
   const pinningReady = (routing?.models ?? []).some((hint) => hint.pinnedAvailable);
   const routingHintMap = useMemo(
     () =>
@@ -118,9 +120,10 @@ export function ModelConfigSection({
         <div>
           <h3 className="text-sm font-medium mb-2 flex items-center gap-2">
             <Sparkles className="w-4 h-4" />
+            {/* TODO i18n: missing key for "Presets" */}
             Presets
           </h3>
-          <p className="text-xs text-muted-foreground mb-3">Apply pre-configured model mappings</p>
+          <p className="text-xs text-muted-foreground mb-3">{t('providerEditor.presets')}</p>
           <div className="space-y-4">
             {presetGroups.map((group) => (
               <div key={group.key}>
@@ -204,7 +207,7 @@ export function ModelConfigSection({
 
       {/* Model Mapping */}
       <div>
-        <h3 className="text-sm font-medium mb-2">Model Mapping</h3>
+        <h3 className="text-sm font-medium mb-2">{t('providerEditor.modelMapping')}</h3>
         <p className="text-xs text-muted-foreground mb-4">
           Configure which models to use for each tier
         </p>

ui/src/components/cliproxy/provider-editor/provider-editor-header.tsx

@@ -8,6 +8,7 @@ import { Badge } from '@/components/ui/badge';
 import { Save, Loader2, RefreshCw, Globe, Network } from 'lucide-react';
 import { ProviderLogo } from '../provider-logo';
 import type { SettingsResponse } from './types';
+import { useTranslation } from 'react-i18next';
 
 interface ProviderEditorHeaderProps {
   provider: string;
@@ -38,6 +39,7 @@ export function ProviderEditorHeader({
   onRefetch,
   onSave,
 }: ProviderEditorHeaderProps) {
+  const { t } = useTranslation();
   return (
     <div className="px-6 py-4 border-b bg-background flex items-center justify-between shrink-0">
       <div className="flex items-center gap-3">
@@ -67,12 +69,13 @@ export function ProviderEditorHeader({
           </div>
           {isRemoteMode ? (
             <p className="text-xs text-blue-600 dark:text-blue-400 mt-0.5">
+              {/* TODO i18n: missing key for remote traffic text */}
               Traffic auto-routed to remote server
             </p>
           ) : (
             data && (
               <p className="text-xs text-muted-foreground mt-0.5">
-                Last modified: {new Date(data.mtime).toLocaleString()}
+                {t('providerEditor.lastModified')}: {new Date(data.mtime).toLocaleString()}
               </p>
             )
           )}

ui/src/components/cliproxy/provider-editor/provider-info-tab.tsx

@@ -10,6 +10,7 @@ import { Info, Shield } from 'lucide-react';
 import { UsageCommand } from './usage-command';
 import type { SettingsResponse } from './types';
 import type { AuthStatus, CliTarget } from '@/lib/api-client';
+import { useTranslation } from 'react-i18next';
 
 interface ProviderInfoTabProps {
   provider: string;
@@ -28,6 +29,7 @@ export function ProviderInfoTab({
   authStatus,
   supportsModelConfig = false,
 }: ProviderInfoTabProps) {
+  const { t } = useTranslation();
   const resolvedTarget = defaultTarget || 'claude';
   const isDroidTarget = resolvedTarget === 'droid';
   const isCodexProvider = provider === 'codex';
@@ -44,17 +46,22 @@ export function ProviderInfoTab({
         <div>
           <h3 className="text-sm font-medium flex items-center gap-2 mb-3">
             <Info className="w-4 h-4" />
+            {/* TODO i18n: missing key for "Provider Information" */}
             Provider Information
           </h3>
           <div className="space-y-3 bg-card rounded-lg border p-4 shadow-sm">
             <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-              <span className="font-medium text-muted-foreground">Provider</span>
+              <span className="font-medium text-muted-foreground">
+                {t('providerEditor.provider')}
+              </span>
               <span className="font-mono">{displayName}</span>
             </div>
             {data && (
               <>
                 <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-                  <span className="font-medium text-muted-foreground">File Path</span>
+                  <span className="font-medium text-muted-foreground">
+                    {t('providerEditor.filePath')}
+                  </span>
                   <div className="flex items-center gap-2 min-w-0">
                     <code className="bg-muted px-1.5 py-0.5 rounded text-xs break-all">
                       {data.path}
@@ -63,13 +70,17 @@ export function ProviderInfoTab({
                   </div>
                 </div>
                 <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-                  <span className="font-medium text-muted-foreground">Last Modified</span>
+                  <span className="font-medium text-muted-foreground">
+                    {t('providerEditor.lastModified')}
+                  </span>
                   <span className="text-xs">{new Date(data.mtime).toLocaleString()}</span>
                 </div>
               </>
             )}
             <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-              <span className="font-medium text-muted-foreground">Status</span>
+              <span className="font-medium text-muted-foreground">
+                {t('providerEditor.status')}
+              </span>
               {authStatus.authenticated ? (
                 <Badge
                   variant="outline"
@@ -85,7 +96,9 @@ export function ProviderInfoTab({
               )}
             </div>
             <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-              <span className="font-medium text-muted-foreground">Default Target</span>
+              <span className="font-medium text-muted-foreground">
+                {t('providerEditor.defaultTarget')}
+              </span>
               <span className="font-mono">{resolvedTarget}</span>
             </div>
           </div>
@@ -93,7 +106,7 @@ export function ProviderInfoTab({
 
         {/* Quick Usage */}
         <div>
-          <h3 className="text-sm font-medium mb-3">Quick Usage</h3>
+          <h3 className="text-sm font-medium mb-3">{t('providerEditor.quickUsage')}</h3>
           <div className="space-y-3 bg-card rounded-lg border p-4 shadow-sm">
             <UsageCommand label="Run with prompt" command={`ccs ${provider} "your prompt"`} />
             {isCodexProvider && (

ui/src/components/cliproxy/provider-editor/raw-editor-section.tsx

@@ -7,6 +7,7 @@ import { lazy, Suspense } from 'react';
 import { Loader2, X, AlertTriangle } from 'lucide-react';
 import { GlobalEnvIndicator } from '@/components/shared/global-env-indicator';
 import type { RawEditorSectionProps } from './types';
+import { useTranslation } from 'react-i18next';
 
 // Lazy load CodeEditor
 const CodeEditor = lazy(() =>
@@ -21,6 +22,7 @@ export function RawEditorSection({
   profileEnv,
   missingRequiredFields = [],
 }: RawEditorSectionProps) {
+  const { t } = useTranslation();
   const hasMissingFields = missingRequiredFields.length > 0;
 
   return (
@@ -28,7 +30,7 @@ export function RawEditorSection({
       fallback={
         <div className="flex items-center justify-center h-full">
           <Loader2 className="w-6 h-6 animate-spin text-muted-foreground" />
-          <span className="ml-2 text-muted-foreground">Loading editor...</span>
+          <span className="ml-2 text-muted-foreground">{t('providerEditor.loadingEditor')}</span>
         </div>
       }
     >

ui/src/components/cliproxy/provider-editor/use-provider-editor.ts

@@ -6,6 +6,7 @@
 import { useState, useMemo, useCallback } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { toast } from 'sonner';
+import i18n from '@/lib/i18n';
 import type { SettingsResponse, UseProviderEditorReturn } from './types';
 import type { ProviderCatalog } from '../provider-model-selector';
 import {
@@ -177,11 +178,11 @@ export function useProviderEditor(
       setRawJsonEdits(null);
       // Show warning if fields missing (runtime uses defaults)
       if (responseData?.warning) {
-        toast.success('Settings saved', {
+        toast.success(i18n.t('settings.saved'), {
           description: responseData.warning,
         });
       } else {
-        toast.success('Settings saved');
+        toast.success(i18n.t('settings.saved'));
       }
     },
     onError: (error: Error) => {

ui/src/components/cliproxy/provider-model-selector.tsx

@@ -379,12 +379,12 @@ export function FlexibleModelSelector({
         {model.tier === 'paid' && <PaidBadge label={t('providerModelSelector.paid')} />}
         {routingHints.get(model.id.toLowerCase())?.unprefixedStatus === 'shadowed' ? (
           <Badge variant="outline" className="text-[9px] h-4 px-1">
-            Shadowed
+            {t('providerModelSelector.shadowed')}
           </Badge>
         ) : null}
         {routingHints.get(model.id.toLowerCase())?.unprefixedStatus === 'prefix-only' ? (
           <Badge variant="outline" className="text-[9px] h-4 px-1">
-            Prefix only
+            {t('providerModelSelector.prefixOnly')}
           </Badge>
         ) : null}
         {isCodexProvider && <CodexEffortBadge modelId={model.id} />}
@@ -425,12 +425,12 @@ export function FlexibleModelSelector({
           </span>
           {routingHints.get(model.id.toLowerCase())?.unprefixedStatus === 'shadowed' ? (
             <Badge variant="outline" className="text-[9px] h-4 px-1">
-              Shadowed
+              {t('providerModelSelector.shadowed')}
             </Badge>
           ) : null}
           {routingHints.get(model.id.toLowerCase())?.unprefixedStatus === 'prefix-only' ? (
             <Badge variant="outline" className="text-[9px] h-4 px-1">
-              Prefix only
+              {t('providerModelSelector.prefixOnly')}
             </Badge>
           ) : null}
           {isCodexProvider && <CodexEffortBadge modelId={model.id} />}
@@ -450,7 +450,7 @@ export function FlexibleModelSelector({
           <div className="flex min-w-0 items-center gap-2">
             <span className="truncate font-mono text-xs">{value}</span>
             <Badge variant="outline" className="text-[9px] h-4 px-1">
-              Current
+              {t('providerModelSelector.current')}
             </Badge>
           </div>
         ),
@@ -458,7 +458,7 @@ export function FlexibleModelSelector({
           <div className="flex min-w-0 items-center gap-2">
             <span className="truncate font-mono text-xs">{value}</span>
             <Badge variant="outline" className="text-[9px] h-4 px-1">
-              Current
+              {t('providerModelSelector.current')}
             </Badge>
           </div>
         ),
@@ -489,7 +489,11 @@ export function FlexibleModelSelector({
             ? [
                 {
                   key: 'current',
-                  label: <span className="text-xs text-muted-foreground">Current value</span>,
+                  label: (
+                    <span className="text-xs text-muted-foreground">
+                      {t('providerModelSelector.currentValue')}
+                    </span>
+                  ),
                 },
               ]
             : []),
@@ -531,8 +535,8 @@ export function FlexibleModelSelector({
         >
           <div className="font-medium">
             {selectedRoutingHint.pinnedAvailable
-              ? 'Preferred pinned model:'
-              : 'Pinned route status:'}{' '}
+              ? t('providerModelSelector.preferredPinnedModel')
+              : t('providerModelSelector.pinnedRouteStatus')}{' '}
             <code>
               {selectedRoutingHint.pinnedAvailable
                 ? selectedRoutingHint.recommendedModelId
@@ -544,7 +548,7 @@ export function FlexibleModelSelector({
       ) : null}
       {value && !selectedRoutingHint && normalizeModelValue(value, routing) !== value ? (
         <div className="rounded-md border border-amber-300/60 bg-amber-50 px-2.5 py-2 text-[11px] text-amber-900 dark:border-amber-500/30 dark:bg-amber-950/25 dark:text-amber-100">
-          Pinned model is not currently advertised by the proxy: <code>{value}</code>
+          {t('providerModelSelector.pinnedModelNotAdvertised', { model: value })}
         </div>
       ) : null}
     </div>

ui/src/components/cliproxy/routing-guidance-card.tsx

@@ -4,6 +4,7 @@ import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import type { CliproxyRoutingState, RoutingStrategy } from '@/lib/api-client';
 import { cn } from '@/lib/utils';
+import { useTranslation } from 'react-i18next';
 
 interface RoutingGuidanceCardProps {
   className?: string;
@@ -35,6 +36,7 @@ export function RoutingGuidanceCard({
   error,
   onApply,
 }: RoutingGuidanceCardProps) {
+  const { t } = useTranslation();
   const currentStrategy = state?.strategy ?? 'round-robin';
   const [selected, setSelected] = useState<RoutingStrategy>(currentStrategy);
   const [detailsOpen, setDetailsOpen] = useState(false);
@@ -114,7 +116,7 @@ export function RoutingGuidanceCard({
             <div className="inline-flex h-7 w-7 items-center justify-center rounded-lg bg-muted text-primary">
               <ArrowRightLeft className="h-4 w-4" />
             </div>
-            <div className="text-sm font-medium">Routing strategy</div>
+            <div className="text-sm font-medium">{t('routingGuidance.routingStrategy')}</div>
             <Badge variant="secondary">{currentStrategy}</Badge>
             {state ? <Badge variant="outline">{sourceLabel}</Badge> : null}
             {state ? <Badge variant="outline">{state.target}</Badge> : null}
@@ -164,6 +166,7 @@ export function RoutingGuidanceCard({
               ) : (
                 <ChevronDown className="mr-1 h-3.5 w-3.5" />
               )}
+              {/* TODO i18n: missing key for detail toggle */}
               {detailToggleLabel}
             </Button>
             <Button size="sm" onClick={() => onApply(selected)} disabled={saveDisabled || !!error}>
@@ -173,9 +176,9 @@ export function RoutingGuidanceCard({
         </div>
 
         <div className="flex flex-wrap items-center gap-x-2 gap-y-1 text-[11px] text-muted-foreground xl:col-span-2">
-          <span>Round robin spreads usage.</span>
+          <span>{t('routingGuidance.roundRobin')}</span>
           <span className="hidden text-border sm:inline">•</span>
-          <span>Fill first keeps backup accounts cold until they are needed.</span>
+          <span>{t('routingGuidance.fillFirst')}</span>
         </div>
 
         {error ? (

ui/src/components/compatible-cli/codex-control-center-tab.tsx

@@ -1,4 +1,5 @@
 import { FileCode2, History, PenLine, Settings2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { CodexFeaturesCard } from '@/components/compatible-cli/codex-features-card';
 import { CodexMcpServersCard } from '@/components/compatible-cli/codex-mcp-servers-card';
 import { CodexModelProvidersCard } from '@/components/compatible-cli/codex-model-providers-card';
@@ -51,6 +52,8 @@ export function CodexControlCenterTab({
   saving,
   onPatch,
 }: CodexControlCenterTabProps) {
+  const { t } = useTranslation();
+
   return (
     <ScrollArea className="h-full">
       <div className="space-y-6 pr-1 pb-6">
@@ -65,7 +68,7 @@ export function CodexControlCenterTab({
                 </div>
                 <div>
                   <h2 className="text-base font-semibold tracking-tight text-foreground">
-                    Structured controls boundary
+                    {t('codex.controlCenter')}
                   </h2>
                 </div>
               </div>
@@ -74,6 +77,7 @@ export function CodexControlCenterTab({
                 <li className="flex items-start gap-2.5">
                   <PenLine className="h-4 w-4 shrink-0 text-muted-foreground/60 mt-0.5" />
                   <span className="leading-relaxed">
+                    {/* TODO i18n: missing key codex.writesUserLayer */}
                     Writes exclusively to user-layer{' '}
                     <code className="text-[11px] bg-muted/70 px-1.5 py-0.5 rounded border border-border/50">
                       config.toml
@@ -83,6 +87,7 @@ export function CodexControlCenterTab({
                 <li className="flex items-start gap-2.5">
                   <History className="h-4 w-4 shrink-0 text-muted-foreground/60 mt-0.5" />
                   <span className="leading-relaxed">
+                    {/* TODO i18n: missing key codex.noRepoTrustReflection */}
                     Does not reflect repo trust layers or CLI overrides
                   </span>
                 </li>
@@ -95,9 +100,11 @@ export function CodexControlCenterTab({
                   <FileCode2 className="mt-0.5 h-4 w-4 shrink-0 text-amber-600 dark:text-amber-400" />
                   <div className="space-y-1">
                     <p className="text-[11px] font-bold text-amber-700 dark:text-amber-300 uppercase tracking-wider">
+                      {/* TODO i18n: missing key codex.formattingNote */}
                       Formatting Note
                     </p>
                     <p className="text-[13px] leading-relaxed text-amber-800/80 dark:text-amber-200/70">
+                      {/* TODO i18n: missing key codex.formattingNoteDesc */}
                       Saves normalize TOML formatting and strip comments. Switch to the raw editor
                       if exact layout matters.
                     </p>
@@ -115,7 +122,7 @@ export function CodexControlCenterTab({
           disabledReason={disabledReason}
           saving={saving}
           onSave={(values: CodexTopLevelSettingsPatch) =>
-            onPatch({ kind: 'top-level', values }, 'Saved top-level Codex settings.')
+            onPatch({ kind: 'top-level', values }, t('toasts.codexSaved'))
           }
         />
 
@@ -128,6 +135,7 @@ export function CodexControlCenterTab({
           onSave={(projectPath, trustLevel) =>
             onPatch(
               { kind: 'project-trust', path: projectPath, trustLevel },
+              // TODO i18n: missing keys codex.savedProjectTrust / codex.removedProjectTrust
               trustLevel ? 'Saved project trust entry.' : 'Removed project trust entry.'
             )
           }
@@ -143,14 +151,23 @@ export function CodexControlCenterTab({
           onSave={(name, values: CodexProfilePatchValues, setAsActive) =>
             onPatch(
               { kind: 'profile', action: 'upsert', name, values, setAsActive },
+              // TODO i18n: missing key codex.savedProfile
               'Saved profile.'
             )
           }
           onDelete={(name) =>
-            onPatch({ kind: 'profile', action: 'delete', name }, 'Deleted profile.')
+            onPatch(
+              { kind: 'profile', action: 'delete', name },
+              // TODO i18n: missing key codex.deletedProfile
+              'Deleted profile.'
+            )
           }
           onSetActive={(name) =>
-            onPatch({ kind: 'profile', action: 'set-active', name }, 'Set active profile.')
+            onPatch(
+              { kind: 'profile', action: 'set-active', name },
+              // TODO i18n: missing key codex.setActiveProfile
+              'Set active profile.'
+            )
           }
         />
 
@@ -162,11 +179,16 @@ export function CodexControlCenterTab({
           onSave={(name, values) =>
             onPatch(
               { kind: 'model-provider', action: 'upsert', name, values },
+              // TODO i18n: missing key codex.savedModelProvider
               'Saved model provider.'
             )
           }
           onDelete={(name) =>
-            onPatch({ kind: 'model-provider', action: 'delete', name }, 'Deleted model provider.')
+            onPatch(
+              { kind: 'model-provider', action: 'delete', name },
+              // TODO i18n: missing key codex.deletedModelProvider
+              'Deleted model provider.'
+            )
           }
         />
 
@@ -176,10 +198,18 @@ export function CodexControlCenterTab({
           disabledReason={disabledReason}
           saving={saving}
           onSave={(name, values) =>
-            onPatch({ kind: 'mcp-server', action: 'upsert', name, values }, 'Saved MCP server.')
+            onPatch(
+              { kind: 'mcp-server', action: 'upsert', name, values },
+              // TODO i18n: missing key codex.savedMcpServer
+              'Saved MCP server.'
+            )
           }
           onDelete={(name) =>
-            onPatch({ kind: 'mcp-server', action: 'delete', name }, 'Deleted MCP server.')
+            onPatch(
+              { kind: 'mcp-server', action: 'delete', name },
+              // TODO i18n: missing key codex.deletedMcpServer
+              'Deleted MCP server.'
+            )
           }
         />
 
@@ -189,7 +219,11 @@ export function CodexControlCenterTab({
           disabled={disabled}
           disabledReason={disabledReason}
           onToggle={(feature, enabled) =>
-            onPatch({ kind: 'feature', feature, enabled }, 'Saved feature toggle.')
+            onPatch(
+              { kind: 'feature', feature, enabled },
+              // TODO i18n: missing key codex.savedFeatureToggle
+              'Saved feature toggle.'
+            )
           }
         />
       </div>

ui/src/components/compatible-cli/codex-docs-tab.tsx

@@ -1,5 +1,6 @@
 import { type ReactNode } from 'react';
 import { ExternalLink, ShieldCheck } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { Separator } from '@/components/ui/separator';
@@ -85,6 +86,8 @@ interface CodexDocsTabProps {
 }
 
 export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
+  const { t } = useTranslation();
+
   const docsReference = diagnostics.docsReference ?? {
     notes: [],
     links: [],
@@ -103,15 +106,18 @@ export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <ShieldCheck className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.ccsBridgeRecipe */}
               CCS bridge recipe
             </CardTitle>
           </CardHeader>
           <CardContent className="space-y-3 text-sm text-muted-foreground">
             <div className="space-y-1.5">
               <p>
+                {/* TODO i18n: missing key codex.builtInLabel */}
                 <strong>Built-in:</strong> Use <code>ccsxp</code> for the CCS provider shortcut.
               </p>
               <p>
+                {/* TODO i18n: missing key codex.nativeLabelRecipe */}
                 <strong>Native:</strong> Configure the recipe below to use CLIProxy directly with{' '}
                 <code>codex</code>.
               </p>
@@ -121,12 +127,15 @@ export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
             </pre>
             <ol className="ml-4 list-decimal space-y-1.5 [&>li]:pl-1">
               <li>
+                {/* TODO i18n: missing key codex.saveCliproxyProvider */}
                 Save the <code>cliproxy</code> provider in your user config.
               </li>
               <li>
+                {/* TODO i18n: missing key codex.setTopLevelModelProvider */}
                 Set top-level <code>model_provider</code> to <code>cliproxy</code>.
               </li>
               <li>
+                {/* TODO i18n: missing key codex.exportCliproxyApiKey */}
                 Export <code>CLIPROXY_API_KEY</code> before launching native Codex.
               </li>
             </ol>
@@ -137,6 +146,7 @@ export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <ShieldCheck className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.upstreamNotes */}
               Upstream notes
             </CardTitle>
           </CardHeader>
@@ -150,7 +160,9 @@ export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
             )}
             <Separator />
             <div className="space-y-2">
-              <p className="text-xs uppercase tracking-wide text-muted-foreground">Codex docs</p>
+              <p className="text-xs uppercase tracking-wide text-muted-foreground">
+                {t('codex.codexDocs')}
+              </p>
               <div className="space-y-1.5">
                 {docsLinks.map((link) => (
                   <a
@@ -175,6 +187,7 @@ export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
             <Separator />
             <div className="space-y-2">
               <p className="text-xs uppercase tracking-wide text-muted-foreground">
+                {/* TODO i18n: missing key codex.providerBridgeReference */}
                 Provider / bridge reference
               </p>
               <div className="space-y-1.5">
@@ -204,12 +217,14 @@ export function CodexDocsTab({ diagnostics }: CodexDocsTabProps) {
               <>
                 <Separator />
                 <p className="text-xs text-muted-foreground">
+                  {/* TODO i18n: missing key codex.providerValues */}
                   Provider values: {docsReference.providerValues.join(', ')}
                 </p>
               </>
             )}
             {docsReference.settingsHierarchy.length > 0 && (
               <p className="text-xs text-muted-foreground">
+                {/* TODO i18n: missing key codex.settingsHierarchy */}
                 Settings hierarchy: {docsReference.settingsHierarchy.join(' -> ')}
               </p>
             )}

ui/src/components/compatible-cli/codex-features-card.tsx

@@ -1,4 +1,5 @@
 import { Sparkles } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Switch } from '@/components/ui/switch';
 import { Badge } from '@/components/ui/badge';
@@ -20,6 +21,8 @@ export function CodexFeaturesCard({
   disabledReason,
   onToggle,
 }: CodexFeaturesCardProps) {
+  const { t } = useTranslation();
+
   const knownFeatureNames = new Set(catalog.map((feature) => feature.name));
   const configOnlyFeatures = Object.entries(state)
     .filter(([name]) => !knownFeatureNames.has(name))
@@ -27,9 +30,11 @@ export function CodexFeaturesCard({
 
   return (
     <CodexConfigCardShell
+      // TODO i18n: missing key codex.features
       title="Features"
       badge="features"
       icon={<Sparkles className="h-4 w-4" />}
+      // TODO i18n: missing key codex.featuresDesc
       description="Toggle the supported Codex feature flags CCS can safely manage."
       disabledReason={disabledReason}
     >
@@ -58,7 +63,7 @@ export function CodexFeaturesCard({
                     onClick={() => onToggle(feature.name, null)}
                     disabled={disabled}
                   >
-                    Use default
+                    {t('codex.useDefault')}
                   </Button>
                 ) : null}
                 <Switch
@@ -76,9 +81,11 @@ export function CodexFeaturesCard({
         <div className="space-y-2">
           <div className="space-y-1">
             <p className="text-xs font-medium uppercase tracking-wide text-muted-foreground">
+              {/* TODO i18n: missing key codex.configOnlyFlags */}
               Existing config-only flags
             </p>
             <p className="text-xs text-muted-foreground">
+              {/* TODO i18n: missing key codex.configOnlyFlagsDesc */}
               These feature keys already exist in your `config.toml`, so CCS can surface them
               without claiming full catalog coverage.
             </p>
@@ -92,17 +99,19 @@ export function CodexFeaturesCard({
                 <div className="flex items-center gap-2">
                   <p className="text-sm font-medium">{name}</p>
                   <Badge variant="secondary" className="text-[10px]">
+                    {/* TODO i18n: missing key codex.existing */}
                     existing
                   </Badge>
                 </div>
                 <p className="text-xs text-muted-foreground">
+                  {/* TODO i18n: missing keys codex.nonBooleanForm / codex.discoveredFromFile */}
                   {current === null
                     ? 'Stored in a non-boolean form. Use raw TOML if you need to edit it.'
                     : "Discovered from the current file instead of CCS's built-in catalog."}
                 </p>
               </div>
               {current === null ? (
-                <Badge variant="outline">Raw only</Badge>
+                <Badge variant="outline">{t('codex.rawOnly')}</Badge>
               ) : (
                 <div className="flex items-center gap-2">
                   <Button
@@ -111,7 +120,7 @@ export function CodexFeaturesCard({
                     onClick={() => onToggle(name, null)}
                     disabled={disabled}
                   >
-                    Use default
+                    {t('codex.useDefault')}
                   </Button>
                   <Switch
                     checked={current === true}

ui/src/components/compatible-cli/codex-mcp-servers-card.tsx

@@ -1,5 +1,6 @@
 import { useMemo, useState } from 'react';
 import { Loader2, PlugZap, Trash2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Switch } from '@/components/ui/switch';
@@ -67,6 +68,7 @@ function McpServerEditor({
   onSave,
   onDelete,
 }: McpServerEditorProps) {
+  const { t } = useTranslation();
   const [draft, setDraft] = useState<CodexMcpServerEntry>(initialDraft);
 
   return (
@@ -92,8 +94,8 @@ function McpServerEditor({
             <SelectValue />
           </SelectTrigger>
           <SelectContent>
-            <SelectItem value="stdio">stdio</SelectItem>
-            <SelectItem value="streamable-http">streamable-http</SelectItem>
+            <SelectItem value="stdio">{t('codex.stdio')}</SelectItem>
+            <SelectItem value="streamable-http">{t('codex.streamableHttp')}</SelectItem>
           </SelectContent>
         </Select>
         {draft.transport === 'stdio' ? (
@@ -136,6 +138,7 @@ function McpServerEditor({
               startupTimeoutSec: event.target.value ? Number(event.target.value) : null,
             }))
           }
+          // TODO i18n: missing key codex.startupTimeoutSec
           placeholder="Startup timeout (sec)"
           disabled={disabled}
         />
@@ -149,6 +152,7 @@ function McpServerEditor({
               toolTimeoutSec: event.target.value ? Number(event.target.value) : null,
             }))
           }
+          // TODO i18n: missing key codex.toolTimeoutSec
           placeholder="Tool timeout (sec)"
           disabled={disabled}
         />
@@ -172,6 +176,7 @@ function McpServerEditor({
 
       <div className="grid gap-3 sm:grid-cols-2">
         <label className="flex items-center justify-between rounded-md border px-3 py-2 text-sm">
+          {/* TODO i18n: missing key codex.enabled */}
           Enabled
           <Switch
             checked={draft.enabled}
@@ -180,6 +185,7 @@ function McpServerEditor({
           />
         </label>
         <label className="flex items-center justify-between rounded-md border px-3 py-2 text-sm">
+          {/* TODO i18n: missing key codex.required */}
           Required
           <Switch
             checked={draft.required}
@@ -192,6 +198,7 @@ function McpServerEditor({
       <div className="flex justify-between gap-2">
         <Button variant="outline" onClick={onDelete} disabled={disabled || saving || !canDelete}>
           <Trash2 className="mr-2 h-4 w-4" />
+          {/* TODO i18n: missing key common.delete */}
           Delete
         </Button>
         <Button
@@ -212,6 +219,7 @@ function McpServerEditor({
           disabled={disabled || saving || draft.name.trim().length === 0}
         >
           {saving ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+          {/* TODO i18n: missing key codex.saveMcpServer */}
           Save MCP server
         </Button>
       </div>
@@ -227,6 +235,8 @@ export function CodexMcpServersCard({
   onSave,
   onDelete,
 }: CodexMcpServersCardProps) {
+  const { t } = useTranslation();
+
   const [selectedName, setSelectedName] = useState('new');
   const selectedEntry = useMemo(
     () => entries.find((entry) => entry.name === selectedName) ?? null,
@@ -237,18 +247,21 @@ export function CodexMcpServersCard({
 
   return (
     <CodexConfigCardShell
+      // TODO i18n: missing key codex.mcpServers
       title="MCP servers"
       badge="mcp_servers"
       icon={<PlugZap className="h-4 w-4" />}
+      // TODO i18n: missing key codex.mcpServersDesc
       description="Manage the safe MCP transport fields. Keep auth headers and bearer tokens in raw TOML."
       disabledReason={disabledReason}
     >
       <Select value={selectedName} onValueChange={setSelectedName} disabled={disabled}>
         <SelectTrigger>
+          {/* TODO i18n: missing key codex.selectMcpServer */}
           <SelectValue placeholder="Select MCP server" />
         </SelectTrigger>
         <SelectContent>
-          <SelectItem value="new">Create new MCP server</SelectItem>
+          <SelectItem value="new">{t('codex.createNewMcpServer')}</SelectItem>
           {entries.map((entry) => (
             <SelectItem key={entry.name} value={entry.name}>
               {entry.name}

ui/src/components/compatible-cli/codex-model-providers-card.tsx

@@ -1,5 +1,6 @@
 import { useMemo, useState } from 'react';
 import { KeyRound, Loader2, Trash2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Switch } from '@/components/ui/switch';
@@ -62,6 +63,7 @@ function ModelProviderEditor({
   onSave,
   onDelete,
 }: ModelProviderEditorProps) {
+  const { t } = useTranslation();
   const [draft, setDraft] = useState<CodexModelProviderEntry>(initialDraft);
 
   return (
@@ -69,8 +71,10 @@ function ModelProviderEditor({
       {isNew && (
         <div className="flex flex-wrap items-center justify-between gap-2 rounded-md border border-dashed px-3 py-2 text-xs text-muted-foreground">
           <p>
+            {/* TODO i18n: missing key codex.cliproxyQuickStart */}
             Quick start: apply the CLIProxy Codex preset here, then set{' '}
-            <strong>Default provider</strong> to <code>cliproxy</code> in Top-level settings.
+            <strong>{t('codex.defaultProvider')}</strong> to <code>cliproxy</code> in Top-level
+            settings.
           </p>
           <Button
             variant="outline"
@@ -78,6 +82,7 @@ function ModelProviderEditor({
             onClick={() => setDraft(CLIPROXY_CODEX_PROVIDER_PRESET)}
             disabled={disabled}
           >
+            {/* TODO i18n: missing key codex.useCliproxyCodexPreset */}
             Use CLIProxy Codex preset
           </Button>
         </div>
@@ -87,6 +92,7 @@ function ModelProviderEditor({
         <Input
           value={draft.name}
           onChange={(event) => setDraft((current) => ({ ...current, name: event.target.value }))}
+          // TODO i18n: missing key codex.providerId
           placeholder="Provider id"
           disabled={disabled || !isNew}
         />
@@ -95,6 +101,7 @@ function ModelProviderEditor({
           onChange={(event) =>
             setDraft((current) => ({ ...current, displayName: event.target.value || null }))
           }
+          // TODO i18n: missing key codex.displayName
           placeholder="Display name"
           disabled={disabled}
         />
@@ -126,10 +133,11 @@ function ModelProviderEditor({
             <SelectValue />
           </SelectTrigger>
           <SelectContent>
-            <SelectItem value="responses">responses</SelectItem>
+            <SelectItem value="responses">{t('codex.responses')}</SelectItem>
           </SelectContent>
         </Select>
         <label className="flex items-center justify-between rounded-md border px-3 py-2 text-sm">
+          {/* TODO i18n: missing key codex.requiresOpenaiAuth */}
           Requires OpenAI auth
           <Switch
             checked={draft.requiresOpenaiAuth}
@@ -140,6 +148,7 @@ function ModelProviderEditor({
           />
         </label>
         <label className="flex items-center justify-between rounded-md border px-3 py-2 text-sm">
+          {/* TODO i18n: missing key codex.supportsWebsockets */}
           Supports websockets
           <Switch
             checked={draft.supportsWebsockets}
@@ -154,6 +163,7 @@ function ModelProviderEditor({
       <div className="flex justify-between gap-2">
         <Button variant="outline" onClick={onDelete} disabled={disabled || saving || !canDelete}>
           <Trash2 className="mr-2 h-4 w-4" />
+          {/* TODO i18n: missing key common.delete */}
           Delete
         </Button>
         <Button
@@ -170,14 +180,16 @@ function ModelProviderEditor({
           disabled={disabled || saving || draft.name.trim().length === 0}
         >
           {saving ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+          {/* TODO i18n: missing key codex.saveProvider */}
           Save provider
         </Button>
       </div>
 
       <p className="text-xs text-muted-foreground">
+        {/* TODO i18n: missing key codex.nativeCodexCliproxyHint */}
         If you want plain native <code>codex</code> to default to CLIProxy, save a provider named{' '}
         <code>cliproxy</code> with <code>CLIPROXY_API_KEY</code> here, then pick{' '}
-        <code>cliproxy</code> in the <strong>Default provider</strong> control above.
+        <code>cliproxy</code> in the <strong>{t('codex.defaultProvider')}</strong> control above.
       </p>
     </>
   );
@@ -191,6 +203,7 @@ export function CodexModelProvidersCard({
   onSave,
   onDelete,
 }: CodexModelProvidersCardProps) {
+  const { t } = useTranslation();
   const [selectedName, setSelectedName] = useState<string>('new');
   const selectedEntry = useMemo(
     () => entries.find((entry) => entry.name === selectedName) ?? null,
@@ -201,18 +214,21 @@ export function CodexModelProvidersCard({
 
   return (
     <CodexConfigCardShell
+      // TODO i18n: missing key codex.modelProviders
       title="Model providers"
       badge="model_providers"
       icon={<KeyRound className="h-4 w-4" />}
+      // TODO i18n: missing key codex.modelProvidersDesc
       description="Edit the common provider fields CCS can support safely. Keep secret migration and inline bearer tokens in raw TOML."
       disabledReason={disabledReason}
     >
       <Select value={selectedName} onValueChange={setSelectedName} disabled={disabled}>
         <SelectTrigger>
+          {/* TODO i18n: missing key codex.selectProvider */}
           <SelectValue placeholder="Select provider" />
         </SelectTrigger>
         <SelectContent>
-          <SelectItem value="new">Create new provider</SelectItem>
+          <SelectItem value="new">{t('codex.createNewProvider')}</SelectItem>
           {entries.map((entry) => (
             <SelectItem key={entry.name} value={entry.name}>
               {entry.name}

ui/src/components/compatible-cli/codex-overview-tab.tsx

@@ -8,6 +8,7 @@ import {
   TerminalSquare,
   XCircle,
 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { QuickCommands } from '@/components/shared';
 import { Badge } from '@/components/ui/badge';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
@@ -59,6 +60,8 @@ interface CodexOverviewTabProps {
 }
 
 export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
+  const { t } = useTranslation();
+
   const inspectProfileCommand = diagnostics.config.activeProfile
     ? `codex --profile ${diagnostics.config.activeProfile}`
     : 'codex';
@@ -71,25 +74,29 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <Info className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.howCodexWorks */}
               How Codex works in CCS
             </CardTitle>
           </CardHeader>
           <CardContent className="text-sm text-muted-foreground">
             <ul className="ml-4 list-disc space-y-1.5 [&>li]:pl-1">
-              <li>Codex is a first-class, runtime-only target in CCS v1.</li>
+              <li>{t('codex.nativeDesc')}</li>
               <li>
+                {/* TODO i18n: missing key codex.nativeConfigLabel */}
                 <strong>Native config:</strong> <code>ccs-codex</code> and <code>ccsx</code> launch
                 native Codex using your saved defaults.
               </li>
               <li>
+                {/* TODO i18n: missing key codex.transientOverrides */}
                 <strong>Transient overrides:</strong> <code>ccsxp</code> (or{' '}
                 <code>ccs codex --target codex</code>) uses the CCS provider shortcut.
               </li>
               <li>
+                {/* TODO i18n: missing key codex.cliproxyDefault */}
                 <strong>CLIProxy default:</strong> To make plain <code>codex</code> use CLIProxy,
                 set <code>model_provider = "cliproxy"</code> and add the recipe below.
               </li>
-              <li>API profiles continue to default to Claude or Droid.</li>
+              <li>{t('codex.apiProfilesDefault')}</li>
             </ul>
           </CardContent>
         </Card>
@@ -98,16 +105,19 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <TerminalSquare className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.runtimeInstall */}
               Runtime install
             </CardTitle>
           </CardHeader>
           <CardContent className="space-y-2">
             <div className="flex items-center justify-between">
-              <span className="text-sm text-muted-foreground">Status</span>
+              <span className="text-sm text-muted-foreground">{t('codex.status')}</span>
               <Badge variant={diagnostics.binary.installed ? 'default' : 'secondary'}>
+                {/* TODO i18n: missing keys codex.detected / codex.notFound */}
                 {diagnostics.binary.installed ? 'Detected' : 'Not found'}
               </Badge>
             </div>
+            {/* TODO i18n: missing keys codex.detectionSource / codex.binaryPath / codex.installDirectory / codex.version / codex.nativeAliases / codex.ccsProviderShortcut / codex.configOverrideSupport */}
             <DetailRow label="Detection source" value={diagnostics.binary.source} mono />
             <DetailRow label="Binary path" value={diagnostics.binary.path || 'Not found'} mono />
             <DetailRow
@@ -121,6 +131,7 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
             <div className="flex items-center justify-between rounded-md border px-3 py-2">
               <span className="text-sm text-muted-foreground">--config override support</span>
               <Badge variant={diagnostics.binary.supportsConfigOverrides ? 'default' : 'secondary'}>
+                {/* TODO i18n: missing keys codex.available / codex.missing */}
                 {diagnostics.binary.supportsConfigOverrides ? 'Available' : 'Missing'}
               </Badge>
             </div>
@@ -131,6 +142,7 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <Route className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.cliproxyNativeCodex */}
               CLIProxy-backed native Codex
             </CardTitle>
           </CardHeader>
@@ -139,34 +151,39 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
               <>
                 <div className="space-y-1.5">
                   <p>
-                    <strong>Two supported paths:</strong>
+                    <strong>{t('codex.twoSupportedPaths')}</strong>
                   </p>
                   <ul className="ml-4 list-disc space-y-1 [&>li]:pl-1">
                     <li>
+                      {/* TODO i18n: missing key codex.builtInCcsxp */}
                       <strong>Built-in:</strong> Use <code>ccsxp</code> for the CCS provider
                       shortcut.
                     </li>
                     <li>
+                      {/* TODO i18n: missing key codex.nativeRecipe */}
                       <strong>Native:</strong> Configure the recipe below to use CLIProxy directly
                       with <code>codex</code>.
                     </li>
                   </ul>
                 </div>
                 <div className="rounded-md border bg-muted/20 p-3">
-                  <p className="font-medium text-foreground">Saved native Codex recipe</p>
+                  <p className="font-medium text-foreground">{t('codex.codexNativeRecipe')}</p>
                   <pre className="mt-2 overflow-x-auto rounded-md bg-background p-3 text-xs text-foreground">
                     {CLIPROXY_NATIVE_CODEX_RECIPE}
                   </pre>
                 </div>
                 <ol className="ml-4 list-decimal space-y-1.5 [&>li]:pl-1">
                   <li>
+                    {/* TODO i18n: missing key codex.saveProviderNamedCliproxy */}
                     Save a provider named <code>cliproxy</code> with the base URL and env key above.
                   </li>
                   <li>
+                    {/* TODO i18n: missing key codex.inTopLevelSetDefault */}
                     In <strong>Top-level settings</strong>, set <strong>Default provider</strong> to{' '}
                     <code>cliproxy</code>.
                   </li>
                   <li>
+                    {/* TODO i18n: missing key codex.exportCliproxyApiKey */}
                     Export <code>CLIPROXY_API_KEY</code> in your shell before launching native
                     Codex.
                   </li>
@@ -174,6 +191,7 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
               </>
             ) : (
               <p>
+                {/* TODO i18n: missing key codex.noConfigOverrides */}
                 This Codex build can still use the native path, but CCS-backed Codex routing via{' '}
                 <code>ccsxp</code> or <code>ccs codex --target codex</code> stays unavailable until
                 the detected Codex binary exposes <code>--config</code> overrides.
@@ -186,30 +204,34 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <Folder className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.configFile */}
               Config file
             </CardTitle>
           </CardHeader>
           <CardContent className="space-y-3">
             <div className="rounded-md border p-3 space-y-1.5">
               <div className="flex items-center justify-between gap-2">
-                <span className="font-medium text-sm">User config</span>
+                <span className="font-medium text-sm">{t('codex.userConfig')}</span>
                 {diagnostics.file.exists ? (
                   <CheckCircle2 className="h-4 w-4 text-green-600" />
                 ) : (
                   <XCircle className="h-4 w-4 text-muted-foreground" />
                 )}
               </div>
+              {/* TODO i18n: missing keys codex.path / codex.resolved / codex.size / codex.lastModified */}
               <DetailRow label="Path" value={diagnostics.file.path} mono />
               <DetailRow label="Resolved" value={diagnostics.file.resolvedPath} mono />
               <DetailRow label="Size" value={formatBytes(diagnostics.file.sizeBytes)} />
               <DetailRow label="Last modified" value={formatTimestamp(diagnostics.file.mtimeMs)} />
               {diagnostics.file.parseError && (
                 <p className="text-xs text-amber-600">
+                  {/* TODO i18n: missing key codex.tomlWarning */}
                   TOML warning: {diagnostics.file.parseError}
                 </p>
               )}
               {diagnostics.file.readError && (
                 <p className="text-xs text-destructive">
+                  {/* TODO i18n: missing key codex.readWarning */}
                   Read warning: {diagnostics.file.readError}
                 </p>
               )}
@@ -221,34 +243,46 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <ShieldCheck className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.currentUserLayerSummary */}
               Current user-layer summary
             </CardTitle>
           </CardHeader>
           <CardContent className="space-y-3">
-            <DetailRow label="Model" value={diagnostics.config.model || 'Not set'} mono />
+            {/* TODO i18n: missing key codex.notSet */}
             <DetailRow
-              label="Model provider"
+              label={t('codex.model')}
+              value={diagnostics.config.model || 'Not set'}
+              mono
+            />
+            <DetailRow
+              label={t('codex.defaultProvider')}
               value={diagnostics.config.modelProvider || 'Not set'}
               mono
             />
             <DetailRow
+              // TODO i18n: missing key codex.activeProfile
               label="Active profile"
               value={diagnostics.config.activeProfile || 'Not set'}
               mono
             />
             <DetailRow
-              label="Approval policy"
+              label={t('codex.approvalPolicy')}
               value={diagnostics.config.approvalPolicy || 'Not set'}
               mono
             />
             <DetailRow
-              label="Sandbox mode"
+              label={t('codex.sandboxMode')}
               value={diagnostics.config.sandboxMode || 'Not set'}
               mono
             />
-            <DetailRow label="Web search" value={diagnostics.config.webSearch || 'Not set'} mono />
+            <DetailRow
+              label={t('codex.webSearch')}
+              value={diagnostics.config.webSearch || 'Not set'}
+              mono
+            />
             <Separator />
             <div className="grid grid-cols-2 gap-2 text-xs">
+              {/* TODO i18n: missing keys codex.providersCount / codex.profilesCount / codex.enabledFeaturesCount / codex.mcpServersCount */}
               <Badge variant="outline" className="justify-center">
                 providers: {diagnostics.config.modelProviderCount}
               </Badge>
@@ -265,6 +299,7 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
             {diagnostics.config.topLevelKeys.length > 0 && (
               <div className="space-y-2">
                 <p className="text-xs uppercase tracking-wide text-muted-foreground">
+                  {/* TODO i18n: missing key codex.userLayerKeysPresent */}
                   User-layer keys present
                 </p>
                 <div className="flex flex-wrap gap-1.5">
@@ -282,28 +317,31 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
         <QuickCommands
           snippets={[
             {
+              // TODO i18n: missing key codex.nativeShortAlias
               label: 'Native short alias',
               command: 'ccsx',
               description: 'Launch the short native Codex runtime alias.',
             },
             {
+              // TODO i18n: missing key codex.ccsCodexShortcut
               label: 'CCS Codex shortcut',
               command: 'ccsxp "your prompt"',
               description: supportsManagedRouting
-                ? 'Run the built-in CCS Codex provider on native Codex.'
+                ? t('codex.runBuiltInCodex')
                 : 'Requires a Codex build that exposes --config overrides.',
             },
             {
+              // TODO i18n: missing key codex.explicitProviderRoute
               label: 'Explicit provider route',
               command: 'ccs codex --target codex "your prompt"',
               description: supportsManagedRouting
-                ? 'Use the explicit built-in Codex provider route.'
+                ? t('codex.runBuiltInCodexExplicit')
                 : 'Requires a Codex build that exposes --config overrides.',
             },
             {
               label: diagnostics.config.activeProfile
                 ? 'Inspect active profile'
-                : 'Open native Codex',
+                : t('codex.openNativeCodex'),
               command: inspectProfileCommand,
               description: diagnostics.config.activeProfile
                 ? 'Inspect the active named profile directly in native Codex.'
@@ -316,12 +354,13 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
           <CardHeader className="pb-2">
             <CardTitle className="flex items-center gap-2 text-base">
               <Route className="h-4 w-4" />
+              {/* TODO i18n: missing key codex.runtimeVsProvider */}
               Runtime vs provider
             </CardTitle>
           </CardHeader>
           <CardContent className="grid gap-3 md:grid-cols-2">
             <div className="flex flex-col rounded-md border p-3 text-sm">
-              <p className="font-medium text-foreground">Native Codex runtime</p>
+              <p className="font-medium text-foreground">{t('codex.nativeCodexRuntime')}</p>
               <ul className="mt-2 flex-grow list-disc space-y-1.5 pl-4 text-muted-foreground [&>li]:pl-1">
                 <li>
                   <code>ccs-codex</code>
@@ -334,11 +373,12 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
                 </li>
               </ul>
               <Badge variant="secondary" className="mt-4 w-fit justify-center font-normal">
+                {/* TODO i18n: missing key codex.honorsSavedNativeConfig */}
                 Honors saved native user config
               </Badge>
             </div>
             <div className="flex flex-col rounded-md border p-3 text-sm">
-              <p className="font-medium text-foreground">CCS Codex provider / bridge</p>
+              <p className="font-medium text-foreground">{t('codex.ccsCodexProvider')}</p>
               {supportsManagedRouting ? (
                 <>
                   <ul className="mt-2 flex-grow list-disc space-y-1.5 pl-4 text-muted-foreground [&>li]:pl-1">
@@ -350,11 +390,13 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
                     </li>
                   </ul>
                   <Badge variant="secondary" className="mt-4 w-fit justify-center font-normal">
+                    {/* TODO i18n: missing key codex.usesTransientOverrides */}
                     Uses transient overrides
                   </Badge>
                 </>
               ) : (
                 <p className="mt-2 text-muted-foreground">
+                  {/* TODO i18n: missing key codex.unavailableNoConfig */}
                   Unavailable (Codex build lacks <code>--config</code> support).
                 </p>
               )}
@@ -364,15 +406,15 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
 
         <Card>
           <CardHeader className="pb-2">
-            <CardTitle className="text-base">Supported flows</CardTitle>
+            <CardTitle className="text-base">{t('codex.supportedFlows')}</CardTitle>
           </CardHeader>
           <CardContent>
             <Table>
               <TableHeader>
                 <TableRow>
-                  <TableHead>Flow</TableHead>
-                  <TableHead>Status</TableHead>
-                  <TableHead>Notes</TableHead>
+                  <TableHead>{t('codex.flow')}</TableHead>
+                  <TableHead>{t('codex.status')}</TableHead>
+                  <TableHead>{t('codex.notes')}</TableHead>
                 </TableRow>
               </TableHeader>
               <TableBody>
@@ -381,6 +423,7 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
                     <TableCell className="font-mono text-xs">{entry.label}</TableCell>
                     <TableCell>
                       <Badge variant={entry.supported ? 'default' : 'secondary'}>
+                        {/* TODO i18n: missing keys common.yes / common.no */}
                         {entry.supported ? 'Yes' : 'No'}
                       </Badge>
                     </TableCell>
@@ -397,6 +440,7 @@ export function CodexOverviewTab({ diagnostics }: CodexOverviewTabProps) {
             <CardHeader className="pb-2">
               <CardTitle className="flex items-center gap-2 text-base">
                 <AlertTriangle className="h-4 w-4 text-amber-600" />
+                {/* TODO i18n: missing key codex.warnings */}
                 Warnings
               </CardTitle>
             </CardHeader>

ui/src/components/compatible-cli/codex-profiles-card.tsx

@@ -1,5 +1,6 @@
 import { useMemo, useState } from 'react';
 import { Layers3, Loader2, Trash2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import {
@@ -62,6 +63,7 @@ function ProfileEditor({
   onDelete,
   onSetActive,
 }: ProfileEditorProps) {
+  const { t } = useTranslation();
   const [nameDraft, setNameDraft] = useState(initialName);
   const [modelDraft, setModelDraft] = useState<string | null>(initialModel);
   const [providerDraft, setProviderDraft] = useState<string | null>(initialProvider);
@@ -88,10 +90,10 @@ function ProfileEditor({
           disabled={disabled}
         >
           <SelectTrigger>
-            <SelectValue placeholder="Use global provider" />
+            <SelectValue placeholder={t('codex.useGlobalProvider')} />
           </SelectTrigger>
           <SelectContent>
-            <SelectItem value="__unset__">Use global provider</SelectItem>
+            <SelectItem value="__unset__">{t('codex.useGlobalProvider')}</SelectItem>
             {providerNames.map((name) => (
               <SelectItem key={name} value={name}>
                 {name}
@@ -105,10 +107,10 @@ function ProfileEditor({
           disabled={disabled}
         >
           <SelectTrigger>
-            <SelectValue placeholder="Use global effort" />
+            <SelectValue placeholder={t('codex.useGlobalEffort')} />
           </SelectTrigger>
           <SelectContent>
-            <SelectItem value="__unset__">Use global effort</SelectItem>
+            <SelectItem value="__unset__">{t('codex.useGlobalEffort')}</SelectItem>
             {['minimal', 'low', 'medium', 'high', 'xhigh'].map((value) => (
               <SelectItem key={value} value={value}>
                 {value}
@@ -126,6 +128,7 @@ function ProfileEditor({
             disabled={disabled || saving || !selectedEntryName}
           >
             <Trash2 className="mr-2 h-4 w-4" />
+            {/* TODO i18n: missing key common.delete */}
             Delete
           </Button>
           <Button
@@ -135,6 +138,7 @@ function ProfileEditor({
               disabled || saving || !selectedEntryName || selectedEntryName === activeProfile
             }
           >
+            {/* TODO i18n: missing key codex.setActive */}
             Set active
           </Button>
         </div>
@@ -155,6 +159,7 @@ function ProfileEditor({
             disabled={disabled || saving || nameDraft.trim().length === 0}
           >
             {saving ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+            {/* TODO i18n: missing key codex.saveProfile */}
             Save profile
           </Button>
           <Button
@@ -172,6 +177,7 @@ function ProfileEditor({
             disabled={disabled || saving || nameDraft.trim().length === 0}
           >
             {saving ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+            {/* TODO i18n: missing key codex.saveAndActivate */}
             Save + activate
           </Button>
         </div>
@@ -191,6 +197,8 @@ export function CodexProfilesCard({
   onDelete,
   onSetActive,
 }: CodexProfilesCardProps) {
+  const { t } = useTranslation();
+
   const [selectedName, setSelectedName] = useState('new');
   const selectedEntry = useMemo(
     () => entries.find((entry) => entry.name === selectedName) ?? null,
@@ -200,21 +208,24 @@ export function CodexProfilesCard({
 
   return (
     <CodexConfigCardShell
-      title="Profiles"
+      title={t('codex.profiles')}
       badge="profiles"
       icon={<Layers3 className="h-4 w-4" />}
+      // TODO i18n: missing key codex.profilesDesc
       description="Create reusable Codex overlays and set the active default profile."
       disabledReason={disabledReason}
     >
       <Select value={selectedName} onValueChange={setSelectedName} disabled={disabled}>
         <SelectTrigger>
+          {/* TODO i18n: missing key codex.selectProfile */}
           <SelectValue placeholder="Select profile" />
         </SelectTrigger>
         <SelectContent>
-          <SelectItem value="new">Create new profile</SelectItem>
+          <SelectItem value="new">{t('codex.createNewProfile')}</SelectItem>
           {entries.map((entry) => (
             <SelectItem key={entry.name} value={entry.name}>
               {entry.name}
+              {/* TODO i18n: missing key codex.activeSuffix */}
               {entry.name === activeProfile ? ' (active)' : ''}
             </SelectItem>
           ))}

ui/src/components/compatible-cli/codex-project-trust-card.tsx

@@ -1,5 +1,6 @@
 import { useState } from 'react';
 import { FolderCheck, Loader2, Trash2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import {
@@ -34,6 +35,7 @@ function ProjectTrustComposer({
   saving,
   onSave,
 }: ProjectTrustComposerProps) {
+  const { t } = useTranslation();
   const [pathDraft, setPathDraft] = useState(workspacePath);
   const [trustLevel, setTrustLevel] = useState('trusted');
 
@@ -50,12 +52,13 @@ function ProjectTrustComposer({
           <SelectValue />
         </SelectTrigger>
         <SelectContent>
-          <SelectItem value="trusted">trusted</SelectItem>
-          <SelectItem value="untrusted">untrusted</SelectItem>
+          <SelectItem value="trusted">{t('codex.trusted')}</SelectItem>
+          <SelectItem value="untrusted">{t('codex.untrusted')}</SelectItem>
         </SelectContent>
       </Select>
       <Button onClick={() => onSave(pathDraft, trustLevel)} disabled={disabled || saving}>
         {saving ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+        {/* TODO i18n: missing key codex.saveTrust */}
         Save trust
       </Button>
     </div>
@@ -70,15 +73,20 @@ export function CodexProjectTrustCard({
   saving = false,
   onSave,
 }: CodexProjectTrustCardProps) {
+  const { t } = useTranslation();
+
   return (
     <CodexConfigCardShell
+      // TODO i18n: missing key codex.projectTrust
       title="Project trust"
       badge="projects"
       icon={<FolderCheck className="h-4 w-4" />}
+      // TODO i18n: missing key codex.projectTrustDesc
       description="Trust current workspaces or remove stale trust entries without opening raw TOML."
       disabledReason={disabledReason}
     >
       <p className="text-xs text-muted-foreground">
+        {/* TODO i18n: missing key codex.trustPathsHint */}
         Paths must be absolute or start with <code>~/</code>. Relative paths are rejected so CCS
         does not trust the wrong folder.
       </p>
@@ -96,12 +104,13 @@ export function CodexProjectTrustCard({
         onClick={() => onSave(workspacePath, 'trusted')}
         disabled={disabled || saving}
       >
+        {/* TODO i18n: missing key codex.trustCurrentWorkspace */}
         Trust current workspace
       </Button>
 
       <div className="space-y-2">
         {entries.length === 0 ? (
-          <p className="text-xs text-muted-foreground">No explicit project trust entries saved.</p>
+          <p className="text-xs text-muted-foreground">{t('codex.noProjectTrustEntries')}</p>
         ) : (
           entries.map((entry) => (
             <div
@@ -121,6 +130,7 @@ export function CodexProjectTrustCard({
                   }
                   disabled={disabled || saving}
                 >
+                  {/* TODO i18n: missing key codex.toggle */}
                   Toggle
                 </Button>
                 <Button

ui/src/components/compatible-cli/codex-top-level-controls-card.tsx

@@ -1,5 +1,6 @@
 import { useState } from 'react';
 import { CircleAlert, Loader2, SlidersHorizontal } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -93,6 +94,8 @@ function TopLevelControlsForm({
   saving,
   onSave,
 }: TopLevelControlsFormProps) {
+  const { t } = useTranslation();
+
   const [draft, setDraft] = useState<CodexTopLevelSettingsView>(initialValues);
   const reasoningOptions = withCurrentValue(
     ['minimal', 'low', 'medium', 'high', 'xhigh'],
@@ -121,7 +124,7 @@ function TopLevelControlsForm({
     <>
       <div className="grid gap-3 sm:grid-cols-2">
         <div className="space-y-1">
-          <p className="text-xs font-medium">Model</p>
+          <p className="text-xs font-medium">{t('codex.model')}</p>
           <Input
             value={draft.model ?? ''}
             onChange={(event) =>
@@ -133,7 +136,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Reasoning effort</p>
+          <p className="text-xs font-medium">{t('codex.reasoningEffort')}</p>
           <Select
             value={toSelectValue(draft.modelReasoningEffort)}
             onValueChange={(next) =>
@@ -145,10 +148,10 @@ function TopLevelControlsForm({
             disabled={disabled}
           >
             <SelectTrigger>
-              <SelectValue placeholder="Use default" />
+              <SelectValue placeholder={t('codex.useDefault')} />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value={UNSET}>Use default</SelectItem>
+              <SelectItem value={UNSET}>{t('codex.useDefault')}</SelectItem>
               {reasoningOptions.map((value) => (
                 <SelectItem key={value} value={value}>
                   {value}
@@ -159,7 +162,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Default provider</p>
+          <p className="text-xs font-medium">{t('codex.defaultProvider')}</p>
           <Select
             value={toSelectValue(draft.modelProvider)}
             onValueChange={(next) =>
@@ -168,10 +171,10 @@ function TopLevelControlsForm({
             disabled={disabled}
           >
             <SelectTrigger>
-              <SelectValue placeholder="Use Codex default" />
+              <SelectValue placeholder={t('codex.useCodexDefault')} />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value={UNSET}>Use Codex default</SelectItem>
+              <SelectItem value={UNSET}>{t('codex.useCodexDefault')}</SelectItem>
               {providerOptions.map((name) => (
                 <SelectItem key={name} value={name}>
                   {name}
@@ -182,7 +185,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Approval policy</p>
+          <p className="text-xs font-medium">{t('codex.approvalPolicy')}</p>
           <Select
             value={toSelectValue(draft.approvalPolicy)}
             onValueChange={(next) =>
@@ -191,10 +194,10 @@ function TopLevelControlsForm({
             disabled={disabled}
           >
             <SelectTrigger>
-              <SelectValue placeholder="Use default" />
+              <SelectValue placeholder={t('codex.useDefault')} />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value={UNSET}>Use default</SelectItem>
+              <SelectItem value={UNSET}>{t('codex.useDefault')}</SelectItem>
               {approvalOptions.map((value) => (
                 <SelectItem key={value} value={value}>
                   {value}
@@ -205,7 +208,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Sandbox mode</p>
+          <p className="text-xs font-medium">{t('codex.sandboxMode')}</p>
           <Select
             value={toSelectValue(draft.sandboxMode)}
             onValueChange={(next) =>
@@ -214,10 +217,10 @@ function TopLevelControlsForm({
             disabled={disabled}
           >
             <SelectTrigger>
-              <SelectValue placeholder="Use default" />
+              <SelectValue placeholder={t('codex.useDefault')} />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value={UNSET}>Use default</SelectItem>
+              <SelectItem value={UNSET}>{t('codex.useDefault')}</SelectItem>
               {sandboxOptions.map((value) => (
                 <SelectItem key={value} value={value}>
                   {value}
@@ -228,7 +231,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Web search</p>
+          <p className="text-xs font-medium">{t('codex.webSearch')}</p>
           <Select
             value={toSelectValue(draft.webSearch)}
             onValueChange={(next) =>
@@ -237,10 +240,10 @@ function TopLevelControlsForm({
             disabled={disabled}
           >
             <SelectTrigger>
-              <SelectValue placeholder="Use default" />
+              <SelectValue placeholder={t('codex.useDefault')} />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value={UNSET}>Use default</SelectItem>
+              <SelectItem value={UNSET}>{t('codex.useDefault')}</SelectItem>
               {webSearchOptions.map((value) => (
                 <SelectItem key={value} value={value}>
                   {value}
@@ -251,7 +254,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Tool output token limit</p>
+          <p className="text-xs font-medium">{t('codex.toolOutputTokenLimit')}</p>
           <Input
             type="number"
             min={1}
@@ -268,7 +271,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="space-y-1">
-          <p className="text-xs font-medium">Personality</p>
+          <p className="text-xs font-medium">{t('codex.personality')}</p>
           <Select
             value={toSelectValue(draft.personality)}
             onValueChange={(next) =>
@@ -277,10 +280,10 @@ function TopLevelControlsForm({
             disabled={disabled}
           >
             <SelectTrigger>
-              <SelectValue placeholder="Use default" />
+              <SelectValue placeholder={t('codex.useDefault')} />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value={UNSET}>Use default</SelectItem>
+              <SelectItem value={UNSET}>{t('codex.useDefault')}</SelectItem>
               {personalityOptions.map((value) => (
                 <SelectItem key={value} value={value}>
                   {value}
@@ -296,21 +299,24 @@ function TopLevelControlsForm({
           <div className="space-y-2">
             <div className="flex flex-wrap items-center gap-2">
               <CircleAlert className="h-4 w-4 text-amber-600 dark:text-amber-300" />
-              <p className="text-sm font-semibold">Long context override</p>
+              <p className="text-sm font-semibold">{t('codex.longContextOverride')}</p>
               <Badge
                 variant="outline"
                 className="border-amber-500/40 bg-background/80 text-[10px] uppercase tracking-[0.16em] text-amber-700 dark:text-amber-300"
               >
+                {/* TODO i18n: missing key codex.manualOptInOnly */}
                 Manual opt-in only
               </Badge>
               <Badge
                 variant="secondary"
                 className="text-[10px] uppercase tracking-[0.16em] text-muted-foreground"
               >
+                {/* TODO i18n: missing keys codex.gpt54Selected / codex.gpt54Reference */}
                 {isGpt54Selected ? 'GPT-5.4 selected' : 'GPT-5.4 reference'}
               </Badge>
             </div>
             <p className="text-xs text-muted-foreground">
+              {/* TODO i18n: missing key codex.draftValuesOnly */}
               Draft values only. Nothing applies until Save.
             </p>
           </div>
@@ -329,6 +335,7 @@ function TopLevelControlsForm({
                 }))
               }
             >
+              {/* TODO i18n: missing key codex.fillCautiousPair */}
               Fill cautious pair
             </Button>
             <Button
@@ -343,6 +350,7 @@ function TopLevelControlsForm({
                 }))
               }
             >
+              {/* TODO i18n: missing key codex.setOfficialMaxWindow */}
               Set official max window
             </Button>
             <Button
@@ -358,6 +366,7 @@ function TopLevelControlsForm({
                 }))
               }
             >
+              {/* TODO i18n: missing key codex.clear */}
               Clear
             </Button>
           </div>
@@ -366,26 +375,31 @@ function TopLevelControlsForm({
         <div className="grid gap-2 sm:grid-cols-3">
           <div className="rounded-lg border bg-background/85 px-3 py-3 shadow-sm shadow-black/5">
             <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
+              {/* TODO i18n: missing key codex.officialMax */}
               Official max
             </p>
             <p className="mt-1 font-mono text-base font-semibold text-foreground">1.05M / 1M</p>
-            <p className="mt-1 text-[11px] text-muted-foreground">GPT-5.4 context cap</p>
+            <p className="mt-1 text-[11px] text-muted-foreground">{t('codex.gptContextCap')}</p>
           </div>
           <div className="rounded-lg border bg-background/85 px-3 py-3 shadow-sm shadow-black/5">
             <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
+              {/* TODO i18n: missing key codex.standardWindow */}
               Standard window
             </p>
             <p className="mt-1 font-mono text-base font-semibold text-foreground">
               {formatInteger(GPT_54_STANDARD_CONTEXT_WINDOW)}
             </p>
-            <p className="mt-1 text-[11px] text-muted-foreground">Normal usage window</p>
+            <p className="mt-1 text-[11px] text-muted-foreground">{t('codex.normalUsageWindow')}</p>
           </div>
           <div className="rounded-lg border bg-background/85 px-3 py-3 shadow-sm shadow-black/5">
             <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
+              {/* TODO i18n: missing key codex.above272k */}
               Above 272K
             </p>
-            <p className="mt-1 font-mono text-base font-semibold text-foreground">Counts 2x</p>
-            <p className="mt-1 text-[11px] text-muted-foreground">Usage-limit cost above 272K</p>
+            <p className="mt-1 font-mono text-base font-semibold text-foreground">
+              {t('codex.counts2x')}
+            </p>
+            <p className="mt-1 text-[11px] text-muted-foreground">{t('codex.usageLimitCost')}</p>
           </div>
         </div>
 
@@ -393,12 +407,15 @@ function TopLevelControlsForm({
           <div className="flex flex-wrap items-center justify-between gap-2">
             <div className="flex flex-wrap items-center gap-2">
               <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
+                {/* TODO i18n: missing key codex.oneCautiousPair */}
                 One cautious pair
               </p>
               <div className="rounded-full border bg-background px-2.5 py-1 font-mono text-[11px] font-medium">
+                {/* TODO i18n: missing key codex.context */}
                 Context {formatInteger(CCS_GPT_54_STARTER_CONTEXT_WINDOW)}
               </div>
               <div className="rounded-full border bg-background px-2.5 py-1 font-mono text-[11px] font-medium">
+                {/* TODO i18n: missing key codex.autoCompact */}
                 Auto-compact {formatInteger(CCS_GPT_54_STARTER_AUTO_COMPACT_TOKEN_LIMIT)}
               </div>
             </div>
@@ -407,20 +424,23 @@ function TopLevelControlsForm({
                 variant="outline"
                 className="border-border/70 bg-background/80 text-[10px] uppercase tracking-[0.14em] text-muted-foreground"
               >
+                {/* TODO i18n: missing key codex.notOfficial */}
                 Not official
               </Badge>
               <Badge
                 variant="outline"
                 className="border-border/70 bg-background/80 text-[10px] uppercase tracking-[0.14em] text-muted-foreground"
               >
+                {/* TODO i18n: missing key codex.draftOnly */}
                 Draft only
               </Badge>
             </div>
           </div>
           <div className="flex flex-wrap items-center gap-2 text-[11px] text-muted-foreground">
-            <span>Quick-fill only. Review before saving.</span>
+            <span>{t('codex.quickFillWarning')}</span>
             {!isGpt54Selected && draft.model ? (
               <span>
+                {/* TODO i18n: missing key codex.shouldBeCheckedSeparately */}
                 <code>{draft.model}</code> should be checked separately.
               </span>
             ) : null}
@@ -429,9 +449,9 @@ function TopLevelControlsForm({
 
         <div className="grid gap-3 sm:grid-cols-2">
           <div className="space-y-1">
-            <p className="text-xs font-medium">Model context window</p>
+            <p className="text-xs font-medium">{t('codex.modelContextWindow')}</p>
             <Input
-              aria-label="Model context window"
+              aria-label={t('codex.modelContextWindow')}
               type="number"
               min={1}
               value={draft.modelContextWindow ?? ''}
@@ -441,18 +461,20 @@ function TopLevelControlsForm({
                   modelContextWindow: parseOptionalInteger(event.target.value),
                 }))
               }
+              // TODO i18n: missing key codex.unset
               placeholder="Unset"
               disabled={disabled}
             />
             <p className="text-xs text-muted-foreground">
+              {/* TODO i18n: missing key codex.writesModelContextWindow */}
               Writes <code>model_context_window</code>. Leave unset to keep Codex defaults.
             </p>
           </div>
 
           <div className="space-y-1">
-            <p className="text-xs font-medium">Auto-compact token limit</p>
+            <p className="text-xs font-medium">{t('codex.autoCompactTokenLimit')}</p>
             <Input
-              aria-label="Auto-compact token limit"
+              aria-label={t('codex.autoCompactTokenLimit')}
               type="number"
               min={1}
               value={draft.modelAutoCompactTokenLimit ?? ''}
@@ -462,10 +484,12 @@ function TopLevelControlsForm({
                   modelAutoCompactTokenLimit: parseOptionalInteger(event.target.value),
                 }))
               }
+              // TODO i18n: missing key codex.unset
               placeholder="Unset"
               disabled={disabled}
             />
             <p className="text-xs text-muted-foreground">
+              {/* TODO i18n: missing key codex.writesAutoCompactTokenLimit */}
               Writes <code>model_auto_compact_token_limit</code>. Leave unset to keep model
               defaults.
             </p>
@@ -473,6 +497,7 @@ function TopLevelControlsForm({
         </div>
 
         <div className="flex flex-wrap items-center gap-2 text-[11px] text-muted-foreground">
+          {/* TODO i18n: missing key codex.docs */}
           <span className="text-[10px] uppercase tracking-[0.14em]">Docs</span>
           <a
             href="https://developers.openai.com/api/docs/models/gpt-5.4"
@@ -480,6 +505,7 @@ function TopLevelControlsForm({
             rel="noreferrer"
             className="underline underline-offset-2 hover:text-foreground"
           >
+            {/* TODO i18n: missing key codex.gpt54ModelPage */}
             GPT-5.4 model page
           </a>
           <a
@@ -488,6 +514,7 @@ function TopLevelControlsForm({
             rel="noreferrer"
             className="underline underline-offset-2 hover:text-foreground"
           >
+            {/* TODO i18n: missing key codex.releaseNotes */}
             Release notes
           </a>
           <a
@@ -496,6 +523,7 @@ function TopLevelControlsForm({
             rel="noreferrer"
             className="underline underline-offset-2 hover:text-foreground"
           >
+            {/* TODO i18n: missing key codex.configReference */}
             Config reference
           </a>
         </div>
@@ -504,6 +532,7 @@ function TopLevelControlsForm({
       <div className="flex justify-end">
         <Button onClick={() => onSave(patch)} disabled={disabled || saving || !hasChanges}>
           {saving ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+          {/* TODO i18n: missing key codex.saveTopLevelSettings */}
           Save top-level settings
         </Button>
       </div>
@@ -521,9 +550,11 @@ export function CodexTopLevelControlsCard({
 }: CodexTopLevelControlsCardProps) {
   return (
     <CodexConfigCardShell
+      // TODO i18n: missing key codex.topLevelControls
       title="Top-level controls"
       badge="config.toml"
       icon={<SlidersHorizontal className="h-4 w-4" />}
+      // TODO i18n: missing key codex.topLevelControlsDesc
       description="Structured controls for the stable top-level Codex settings users touch most often. Unsupported upstream shapes stay untouched and should be edited in raw TOML."
       disabledReason={disabledReason}
     >

ui/src/components/compatible-cli/droid-byok-reasoning-controls-card.tsx

@@ -1,4 +1,5 @@
 import { BrainCircuit } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Input } from '@/components/ui/input';
@@ -39,12 +40,14 @@ export function DroidByokReasoningControlsCard({
   onEffortChange,
   onAnthropicBudgetChange,
 }: DroidByokReasoningControlsCardProps) {
+  const { t } = useTranslation();
+
   return (
     <Card>
       <CardHeader className="pb-2">
         <CardTitle className="text-base flex items-center gap-2">
           <BrainCircuit className="h-4 w-4" />
-          BYOK Reasoning / Thinking
+          {t('droidSettings.reasoningControls')}
           <Badge variant="outline" className="text-[10px] font-normal">
             customModels
           </Badge>
@@ -55,6 +58,7 @@ export function DroidByokReasoningControlsCard({
 
         {models.length === 0 ? (
           <p className="text-xs text-muted-foreground">
+            {/* TODO i18n: missing key droidSettings.noByokModels */}
             No BYOK custom models found in settings.json (`customModels` or `custom_models`).
           </p>
         ) : (
@@ -75,7 +79,9 @@ export function DroidByokReasoningControlsCard({
 
                 <div className="grid gap-2 sm:grid-cols-2">
                   <div className="space-y-1">
-                    <p className="text-[11px] font-medium">Reasoning Effort</p>
+                    <p className="text-[11px] font-medium">
+                      {t('codex.reasoningEffortCapitalized')}
+                    </p>
                     <Select
                       value={model.effort ?? UNSET_VALUE}
                       onValueChange={(next) =>
@@ -84,9 +90,11 @@ export function DroidByokReasoningControlsCard({
                       disabled={disabled}
                     >
                       <SelectTrigger className="h-8 text-xs">
+                        {/* TODO i18n: missing key droidSettings.useProviderDefault */}
                         <SelectValue placeholder="Use provider default" />
                       </SelectTrigger>
                       <SelectContent>
+                        {/* TODO i18n: missing key droidSettings.useProviderDefault */}
                         <SelectItem value={UNSET_VALUE}>Use provider default</SelectItem>
                         {DROID_REASONING_EFFORT_OPTIONS.map((option) => (
                           <SelectItem key={option} value={option}>
@@ -99,7 +107,7 @@ export function DroidByokReasoningControlsCard({
 
                   {model.providerKind === 'anthropic' && (
                     <div className="space-y-1">
-                      <p className="text-[11px] font-medium">Thinking Budget Tokens</p>
+                      <p className="text-[11px] font-medium">{t('codex.thinkingBudgetTokens')}</p>
                       <Input
                         type="number"
                         min={1024}

ui/src/components/compatible-cli/droid-settings-quick-controls-card.tsx

@@ -1,4 +1,5 @@
 import { SlidersHorizontal } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Input } from '@/components/ui/input';
@@ -123,12 +124,14 @@ export function DroidSettingsQuickControlsCard({
   onBooleanSettingChange,
   onNumberSettingChange,
 }: DroidSettingsQuickControlsCardProps) {
+  const { t } = useTranslation();
+
   return (
     <Card>
       <CardHeader className="pb-2">
         <CardTitle className="text-base flex items-center gap-2">
           <SlidersHorizontal className="h-4 w-4" />
-          Quick Settings
+          {t('droidSettings.quickControls')}
           <Badge variant="outline" className="text-[10px] font-normal">
             settings.json
           </Badge>
@@ -140,6 +143,7 @@ export function DroidSettingsQuickControlsCard({
         <div className="grid gap-3 sm:grid-cols-2">
           {enumFieldConfig.map((field) => (
             <div key={field.key} className="space-y-1">
+              {/* TODO i18n: missing keys for droidSettings enum/boolean/number field labels */}
               <p className="text-xs font-medium">{field.label}</p>
               <Select
                 value={values[field.key] ?? UNSET_VALUE}
@@ -149,10 +153,10 @@ export function DroidSettingsQuickControlsCard({
                 disabled={disabled}
               >
                 <SelectTrigger className="h-8 text-xs">
-                  <SelectValue placeholder="Use default" />
+                  <SelectValue placeholder={t('codex.useDefault')} />
                 </SelectTrigger>
                 <SelectContent>
-                  <SelectItem value={UNSET_VALUE}>Use default</SelectItem>
+                  <SelectItem value={UNSET_VALUE}>{t('codex.useDefault')}</SelectItem>
                   {field.options.map((option) => (
                     <SelectItem key={option.value} value={option.value}>
                       {option.label}
@@ -166,6 +170,7 @@ export function DroidSettingsQuickControlsCard({
 
           {numberFieldConfig.map((field) => (
             <div key={field.key} className="space-y-1">
+              {/* TODO i18n: missing keys for droidSettings number field labels */}
               <p className="text-xs font-medium">{field.label}</p>
               <Input
                 type="number"
@@ -190,6 +195,7 @@ export function DroidSettingsQuickControlsCard({
 
           {booleanFieldConfig.map((field) => (
             <div key={field.key} className="space-y-1">
+              {/* TODO i18n: missing keys for droidSettings boolean field labels */}
               <p className="text-xs font-medium">{field.label}</p>
               <Select
                 value={toBooleanSelectValue(values[field.key])}
@@ -197,10 +203,10 @@ export function DroidSettingsQuickControlsCard({
                 disabled={disabled}
               >
                 <SelectTrigger className="h-8 text-xs">
-                  <SelectValue placeholder="Use default" />
+                  <SelectValue placeholder={t('codex.useDefault')} />
                 </SelectTrigger>
                 <SelectContent>
-                  <SelectItem value={UNSET_VALUE}>Use default</SelectItem>
+                  <SelectItem value={UNSET_VALUE}>{t('codex.useDefault')}</SelectItem>
                   <SelectItem value="true">true</SelectItem>
                   <SelectItem value="false">false</SelectItem>
                 </SelectContent>

ui/src/components/compatible-cli/raw-json-settings-editor-panel.tsx

@@ -67,6 +67,7 @@ export function RawConfigEditorPanel({
             {title}
             {dirty && (
               <Badge variant="secondary" className="text-[10px]">
+                {/* TODO i18n: missing key rawJsonSettingsEditor.unsaved */}
                 Unsaved
               </Badge>
             )}
@@ -80,15 +81,18 @@ export function RawConfigEditorPanel({
             ) : (
               <Save className="h-4 w-4 mr-1" />
             )}
+            {/* TODO i18n: missing key rawJsonSettingsEditor.save */}
             Save
           </Button>
           {onDiscard ? (
             <Button variant="outline" size="sm" onClick={onDiscard} disabled={!dirty || loading}>
+              {/* TODO i18n: missing key rawJsonSettingsEditor.discard */}
               Discard
             </Button>
           ) : null}
           <Button variant="outline" size="sm" onClick={handleCopy} disabled={!value}>
             <Copy className="h-4 w-4 mr-1" />
+            {/* TODO i18n: missing keys rawJsonSettingsEditor.copied / rawJsonSettingsEditor.copy */}
             {copied ? 'Copied' : 'Copy'}
           </Button>
           <Button variant="outline" size="sm" onClick={onRefresh} aria-label="Refresh raw config">
@@ -113,6 +117,7 @@ export function RawConfigEditorPanel({
             )}
             {readWarning && (
               <div className="mx-4 mt-4 rounded-md border border-destructive/40 bg-destructive/5 px-3 py-2 text-sm text-destructive">
+                {/* TODO i18n: missing key rawJsonSettingsEditor.readOnly */}
                 Read-only: {readWarning}
               </div>
             )}

ui/src/components/copilot/config-form/header-section.tsx

@@ -6,6 +6,7 @@
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
 import { Loader2, Save, RefreshCw } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 interface RawSettings {
   path: string;
@@ -35,12 +36,14 @@ export function HeaderSection({
   onRefresh,
   onSave,
 }: HeaderSectionProps) {
+  const { t } = useTranslation();
+
   return (
     <div className="px-6 py-4 border-b bg-background flex items-center justify-between shrink-0">
       <div className="flex items-center gap-3">
         <div>
           <div className="flex items-center gap-2">
-            <h2 className="text-lg font-semibold">Copilot Configuration</h2>
+            <h2 className="text-lg font-semibold">{t('copilotConfigForm.copilotConfiguration')}</h2>
             {rawSettings && (
               <Badge variant="outline" className="text-xs">
                 copilot.settings.json
@@ -49,7 +52,8 @@ export function HeaderSection({
           </div>
           {rawSettings && (
             <p className="text-xs text-muted-foreground mt-0.5">
-              Last modified:{' '}
+              {/* TODO i18n: missing key copilotConfigForm.lastModified */}
+              Last modified: {/* TODO i18n: missing key copilotConfigForm.neverSaved */}
               {rawSettings.exists ? new Date(rawSettings.mtime).toLocaleString() : 'Never saved'}
             </p>
           )}
@@ -67,11 +71,13 @@ export function HeaderSection({
           {isUpdating || isSavingRawSettings ? (
             <>
               <Loader2 className="w-4 h-4 mr-1 animate-spin" />
+              {/* TODO i18n: missing key copilotConfigForm.saving */}
               Saving...
             </>
           ) : (
             <>
               <Save className="w-4 h-4 mr-1" />
+              {/* TODO i18n: missing key copilotConfigForm.save */}
               Save
             </>
           )}

ui/src/components/copilot/config-form/index.tsx

@@ -12,6 +12,7 @@ import { Skeleton } from '@/components/ui/skeleton';
 import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
 import { Tabs, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { AlertTriangle, Code2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { ConfirmDialog } from '@/components/shared/confirm-dialog';
 
 import { HeaderSection } from './header-section';
@@ -22,6 +23,7 @@ import { RawEditorSection } from './raw-editor-section';
 import { useCopilotConfigForm } from './use-copilot-config-form';
 
 export function CopilotConfigForm() {
+  const { t } = useTranslation();
   const {
     configLoading,
     rawSettingsLoading,
@@ -83,9 +85,10 @@ export function CopilotConfigForm() {
         <div className="px-6 pt-4 shrink-0">
           <Alert variant="warning">
             <AlertTriangle className="h-4 w-4" />
-            <AlertTitle>Deprecated Copilot models detected</AlertTitle>
+            <AlertTitle>{t('copilotConfigForm.deprecatedModels')}</AlertTitle>
             <AlertDescription className="space-y-2">
               <p>
+                {/* TODO i18n: missing key copilotConfigForm.deprecatedModelsDesc */}
                 Loading this page did not rewrite your files. Save the Copilot configuration to
                 persist these replacements.
               </p>
@@ -108,12 +111,15 @@ export function CopilotConfigForm() {
               <div className="px-4 pt-4 shrink-0">
                 <TabsList className="w-full">
                   <TabsTrigger value="config" className="flex-1">
+                    {/* TODO i18n: missing key copilotConfigForm.modelConfig */}
                     Model Config
                   </TabsTrigger>
                   <TabsTrigger value="settings" className="flex-1">
+                    {/* TODO i18n: missing key copilotConfigForm.settings */}
                     Settings
                   </TabsTrigger>
                   <TabsTrigger value="info" className="flex-1">
+                    {/* TODO i18n: missing key copilotConfigForm.info */}
                     Info
                   </TabsTrigger>
                 </TabsList>

ui/src/components/copilot/config-form/info-tab.tsx

@@ -8,6 +8,7 @@ import { CopyButton } from '@/components/ui/copy-button';
 import { Badge } from '@/components/ui/badge';
 import { Info } from 'lucide-react';
 import { TabsContent } from '@/components/ui/tabs';
+import { useTranslation } from 'react-i18next';
 import { UsageCommand } from './usage-command';
 
 interface RawSettings {
@@ -22,6 +23,7 @@ interface InfoTabProps {
 }
 
 export function InfoTab({ rawSettings }: InfoTabProps) {
+  const { t } = useTranslation();
   return (
     <TabsContent value="info" className="h-full mt-0 border-0 p-0 data-[state=inactive]:hidden">
       <ScrollArea className="h-full">
@@ -29,17 +31,22 @@ export function InfoTab({ rawSettings }: InfoTabProps) {
           <div>
             <h3 className="text-sm font-medium flex items-center gap-2 mb-3">
               <Info className="w-4 h-4" />
+              {/* TODO i18n: missing key for 'Configuration Info' */}
               Configuration Info
             </h3>
             <div className="space-y-3 bg-card rounded-lg border p-4 shadow-sm">
               <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-                <span className="font-medium text-muted-foreground">Provider</span>
+                <span className="font-medium text-muted-foreground">
+                  {t('copilotConfigForm.provider')}
+                </span>
                 <span className="font-mono">GitHub Copilot</span>
               </div>
               {rawSettings && (
                 <>
                   <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-                    <span className="font-medium text-muted-foreground">File Path</span>
+                    <span className="font-medium text-muted-foreground">
+                      {t('copilotConfigForm.filePath')}
+                    </span>
                     <div className="flex items-center gap-2 min-w-0">
                       <code className="bg-muted px-1.5 py-0.5 rounded text-xs break-all">
                         {rawSettings.path}
@@ -48,7 +55,9 @@ export function InfoTab({ rawSettings }: InfoTabProps) {
                     </div>
                   </div>
                   <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-center">
-                    <span className="font-medium text-muted-foreground">Status</span>
+                    <span className="font-medium text-muted-foreground">
+                      {t('copilotConfigForm.status')}
+                    </span>
                     <Badge
                       variant="outline"
                       className={
@@ -57,6 +66,7 @@ export function InfoTab({ rawSettings }: InfoTabProps) {
                           : 'w-fit text-muted-foreground'
                       }
                     >
+                      {/* TODO i18n: missing key for 'File exists' / 'Using defaults' */}
                       {rawSettings.exists ? 'File exists' : 'Using defaults'}
                     </Badge>
                   </div>
@@ -66,8 +76,9 @@ export function InfoTab({ rawSettings }: InfoTabProps) {
           </div>
 
           <div>
-            <h3 className="text-sm font-medium mb-3">Quick Usage</h3>
+            <h3 className="text-sm font-medium mb-3">{t('copilotConfigForm.quickUsage')}</h3>
             <div className="space-y-3 bg-card rounded-lg border p-4 shadow-sm">
+              {/* TODO i18n: missing keys for usage command labels */}
               <UsageCommand label="Run with Copilot" command="ccs copilot" />
               <UsageCommand label="Authenticate" command="ccs copilot auth" />
               <UsageCommand label="Start daemon" command="ccs copilot --start" />

ui/src/components/copilot/config-form/model-config-tab.tsx

@@ -9,6 +9,7 @@ import { Separator } from '@/components/ui/separator';
 import { Badge } from '@/components/ui/badge';
 import { Sparkles, Zap } from 'lucide-react';
 import { TabsContent } from '@/components/ui/tabs';
+import { useTranslation } from 'react-i18next';
 import type { CopilotModel } from '@/hooks/use-copilot';
 import { FREE_PRESETS, PAID_PRESETS } from './presets';
 import { FlexibleModelSelector } from './model-selector';
@@ -70,6 +71,7 @@ export function ModelConfigTab({
   onUpdateSonnetModel,
   onUpdateHaikuModel,
 }: ModelConfigTabProps) {
+  const { t } = useTranslation();
   const mappedModelLimits = [
     { label: 'Default', id: currentModel },
     { label: 'Opus', id: opusModel || currentModel },
@@ -94,10 +96,10 @@ export function ModelConfigTab({
           <div>
             <h3 className="text-sm font-medium mb-2 flex items-center gap-2">
               <Sparkles className="w-4 h-4" />
-              Presets
+              {t('providerEditor.presets')}
             </h3>
             <p className="text-xs text-muted-foreground mb-3">
-              Apply pre-configured model mappings
+              {t('copilotConfigForm.modelMapping')}
             </p>
 
             {/* Free Tier Presets */}
@@ -107,9 +109,12 @@ export function ModelConfigTab({
                   variant="outline"
                   className="text-[10px] bg-green-100 text-green-700 border-green-200"
                 >
+                  {/* TODO i18n: missing key for 'Free Tier' */}
                   Free Tier
                 </Badge>
-                <span className="text-[10px] text-muted-foreground">No premium usage count</span>
+                <span className="text-[10px] text-muted-foreground">
+                  {t('copilotConfigForm.noPremiumUsage')}
+                </span>
               </div>
               <div className="flex flex-wrap gap-2">
                 {FREE_PRESETS.map((preset) => (
@@ -135,9 +140,11 @@ export function ModelConfigTab({
                   variant="outline"
                   className="text-[10px] bg-blue-100 text-blue-700 border-blue-200"
                 >
+                  {/* TODO i18n: missing key for 'Pro+ Required' */}
                   Pro+ Required
                 </Badge>
                 <span className="text-[10px] text-muted-foreground">
+                  {/* TODO i18n: missing key for 'Uses premium request quota' */}
                   Uses premium request quota
                 </span>
               </div>
@@ -163,13 +170,15 @@ export function ModelConfigTab({
 
           {/* Model Mapping */}
           <div>
-            <h3 className="text-sm font-medium mb-2">Model Mapping</h3>
+            <h3 className="text-sm font-medium mb-2">{t('copilotConfigForm.modelMapping')}</h3>
             <p className="text-xs text-muted-foreground mb-4">
+              {/* TODO i18n: missing key for model mapping description */}
               Configure which models to use for each tier
             </p>
             <div className="mb-4 rounded-lg border border-amber-500/30 bg-amber-500/10 p-3 text-xs text-amber-900 dark:text-amber-200">
-              <p className="font-medium">GitHub Copilot controls prompt/context limits upstream.</p>
+              <p className="font-medium">{t('copilotConfigForm.githubCopilotControls')}</p>
               <p className="mt-1">
+                {/* TODO i18n: missing key for 'CCS can switch Copilot models...' */}
                 CCS can switch Copilot models, but it cannot increase the provider&apos;s max prompt
                 or context window.
               </p>
@@ -183,6 +192,7 @@ export function ModelConfigTab({
                 </div>
               ) : (
                 <p className="mt-2 text-[11px] font-mono">
+                  {/* TODO i18n: missing key for 'Start the daemon to inspect...' */}
                   Start the daemon to inspect live model limits from GitHub Copilot metadata.
                 </p>
               )}

ui/src/components/copilot/config-form/presets.ts

@@ -5,6 +5,7 @@
 
 import type { ModelPreset } from './types';
 
+// TODO i18n: missing keys for preset descriptions ("Free tier - no premium usage", etc.)
 // Note: ALL Claude models require paid Copilot subscription
 export const FREE_PRESETS: ModelPreset[] = [
   {
@@ -25,6 +26,7 @@ export const FREE_PRESETS: ModelPreset[] = [
   },
 ];
 
+// TODO i18n: missing keys for paid preset descriptions
 export const PAID_PRESETS: ModelPreset[] = [
   {
     name: 'Claude Opus 4.5',

ui/src/components/copilot/config-form/raw-editor-section.tsx

@@ -5,6 +5,7 @@
 
 import { Suspense, lazy } from 'react';
 import { Loader2, X, AlertTriangle } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { GlobalEnvIndicator } from '@/components/shared/global-env-indicator';
 
 // Lazy load CodeEditor
@@ -29,6 +30,7 @@ export function RawEditorSection({
   onChange,
   missingRequiredFields = [],
 }: RawEditorSectionProps) {
+  const { t } = useTranslation();
   const hasMissingFields = missingRequiredFields.length > 0;
 
   return (
@@ -36,7 +38,7 @@ export function RawEditorSection({
       fallback={
         <div className="flex items-center justify-center h-full">
           <Loader2 className="w-6 h-6 animate-spin text-muted-foreground" />
-          <span className="ml-2 text-muted-foreground">Loading editor...</span>
+          <span className="ml-2 text-muted-foreground">{t('providerEditor.loadingEditor')}</span>
         </div>
       }
     >
@@ -44,6 +46,7 @@ export function RawEditorSection({
         {!isRawJsonValid && rawJsonEdits !== null && (
           <div className="mb-2 px-3 py-2 bg-destructive/10 text-destructive text-sm rounded-md flex items-center gap-2 mx-6 mt-4 shrink-0">
             <X className="w-4 h-4" />
+            {/* TODO i18n: missing key for 'Invalid JSON syntax' */}
             Invalid JSON syntax
           </div>
         )}
@@ -52,12 +55,14 @@ export function RawEditorSection({
             <AlertTriangle className="w-4 h-4 mt-0.5 text-amber-500 shrink-0" />
             <div>
               <span className="font-medium text-amber-600 dark:text-amber-400">
+                {/* TODO i18n: missing key for 'Missing required fields:' */}
                 Missing required fields:
               </span>{' '}
               <code className="text-xs bg-muted px-1 py-0.5 rounded">
                 {missingRequiredFields.join(', ')}
               </code>
               <p className="text-xs text-muted-foreground mt-1">
+                {/* TODO i18n: missing key for 'These fields will use default values at runtime.' */}
                 These fields will use default values at runtime.
               </p>
             </div>

ui/src/components/copilot/config-form/use-copilot-config-form.ts

@@ -8,6 +8,7 @@ import { useCopilot } from '@/hooks/use-copilot';
 import type { CopilotNormalizationWarning } from '@/hooks/use-copilot';
 import { isApiConflictError } from '@/lib/api-client';
 import { toast } from 'sonner';
+import { useTranslation } from 'react-i18next';
 import type { ModelPreset } from './types';
 
 /** Required env vars for Copilot settings (informational only - runtime fills defaults) */
@@ -31,6 +32,7 @@ function dedupeWarnings(
 }
 
 export function useCopilotConfigForm() {
+  const { t } = useTranslation();
   const {
     config,
     configLoading,
@@ -91,7 +93,7 @@ export function useCopilotConfigForm() {
       sonnetModel: preset.sonnet,
       haikuModel: preset.haiku,
     }));
-    toast.success(`Applied "${preset.name}" preset`);
+    toast.success(t('toasts.presetApplied', { name: preset.name }));
   };
 
   // Raw JSON content
@@ -191,15 +193,15 @@ export function useCopilotConfigForm() {
       }
 
       if (uniqueWarnings.length > 0) {
-        toast.warning('Copilot configuration saved with model adjustments', {
+        toast.warning(t('toasts.settingsSavedWithAdjustments'), {
           description: descriptions.join(' '),
         });
       } else if (descriptions.length > 0) {
-        toast.success('Copilot configuration saved', {
+        toast.success(t('toasts.settingsSaved'), {
           description: descriptions.join(' '),
         });
       } else {
-        toast.success('Copilot configuration saved');
+        toast.success(t('toasts.settingsSaved'));
       }
 
       // Clear local state
@@ -209,7 +211,7 @@ export function useCopilotConfigForm() {
       if (isApiConflictError(error)) {
         setConflictDialog(true);
       } else {
-        toast.error('Failed to save settings');
+        toast.error(t('toasts.failedSaveSettings'));
       }
     }
   };

ui/src/components/copilot/config-form/utils.ts

@@ -25,6 +25,7 @@ export function getPlanBadgeStyle(plan?: CopilotPlanTier): string {
 /** Get multiplier display */
 export function getMultiplierDisplay(multiplier?: number): string | null {
   if (multiplier === undefined || multiplier === null) return null;
+  // TODO i18n: missing key for 'Free' multiplier label
   if (multiplier === 0) return 'Free';
   if (multiplier < 1) return `${multiplier}x`;
   if (multiplier === 1) return '1x';

ui/src/components/copilot/copilot-status-card.tsx

@@ -9,8 +9,10 @@ import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { useCopilot } from '@/hooks/use-copilot';
 import { CheckCircle2, XCircle, AlertTriangle, Loader2, Download } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 export function CopilotStatusCard() {
+  const { t } = useTranslation();
   const {
     status,
     statusLoading,
@@ -28,7 +30,7 @@ export function CopilotStatusCard() {
     return (
       <Card>
         <CardHeader>
-          <CardTitle>GitHub Copilot Status</CardTitle>
+          <CardTitle>{t('copilotPage.status')}</CardTitle>
         </CardHeader>
         <CardContent className="flex items-center justify-center py-8">
           <Loader2 className="h-6 w-6 animate-spin" />
@@ -41,10 +43,10 @@ export function CopilotStatusCard() {
     return (
       <Card>
         <CardHeader>
-          <CardTitle>GitHub Copilot Status</CardTitle>
+          <CardTitle>{t('copilotPage.status')}</CardTitle>
         </CardHeader>
         <CardContent>
-          <p className="text-muted-foreground">Failed to load status</p>
+          <p className="text-muted-foreground">{t('copilotConfigForm.failedLoadStatus')}</p>
         </CardContent>
       </Card>
     );
@@ -54,21 +56,21 @@ export function CopilotStatusCard() {
     <Card>
       <CardHeader>
         <CardTitle className="flex items-center gap-2">
-          GitHub Copilot Status
+          {t('copilotPage.status')}
           {status.enabled ? (
-            <Badge variant="default">Enabled</Badge>
+            <Badge variant="default">{t('copilotPage.enabled')}</Badge>
           ) : (
-            <Badge variant="secondary">Disabled</Badge>
+            <Badge variant="secondary">{t('copilotPage.disabled')}</Badge>
           )}
         </CardTitle>
-        <CardDescription>Use your GitHub Copilot subscription with Claude Code</CardDescription>
+        <CardDescription>{t('copilotConfigForm.useWithClaudeCode')}</CardDescription>
       </CardHeader>
       <CardContent className="space-y-4">
         {/* Warning Banner */}
         <div className="flex items-start gap-2 rounded-md border border-yellow-500/20 bg-yellow-500/10 p-3">
           <AlertTriangle className="h-5 w-5 text-yellow-500 shrink-0 mt-0.5" />
           <p className="text-sm text-yellow-700 dark:text-yellow-300">
-            This uses a reverse-engineered API. Excessive usage may trigger GitHub abuse detection.
+            {t('copilotPage.unofficialItem2')}
           </p>
         </div>
 
@@ -82,7 +84,7 @@ export function CopilotStatusCard() {
               <XCircle className="h-5 w-5 text-red-500" />
             )}
             <span className="text-sm">
-              copilot-api {status.installed ? `v${status.version}` : 'Not Installed'}
+              copilot-api {status.installed ? `v${status.version}` : t('copilotPage.missing')}
             </span>
           </div>
 
@@ -94,7 +96,7 @@ export function CopilotStatusCard() {
               <XCircle className="h-5 w-5 text-red-500" />
             )}
             <span className="text-sm">
-              {status.authenticated ? 'Authenticated' : 'Not Authenticated'}
+              {status.authenticated ? t('copilotPage.connected') : t('copilotPage.notConnected')}
             </span>
           </div>
 
@@ -105,15 +107,25 @@ export function CopilotStatusCard() {
             ) : (
               <XCircle className="h-5 w-5 text-muted-foreground" />
             )}
-            <span className="text-sm">Daemon {status.daemon_running ? 'Running' : 'Stopped'}</span>
+            <span className="text-sm">
+              {t('copilotPage.daemon')}{' '}
+              {status.daemon_running ? t('copilotPage.running') : t('copilotPage.stopped')}
+            </span>
           </div>
         </div>
 
         {/* Quick Info */}
         <div className="flex flex-wrap gap-4 text-sm text-muted-foreground">
-          <span>Port: {status.port}</span>
-          <span>Model: {status.model}</span>
-          <span>Auto-start: {status.auto_start ? 'Yes' : 'No'}</span>
+          <span>
+            {t('copilotPage.port')}: {status.port}
+          </span>
+          <span>
+            {t('providerEditor.modelMapping')}: {status.model}
+          </span>
+          <span>
+            {/* TODO i18n: missing key for 'Auto-start' */}
+            Auto-start: {status.auto_start ? t('copilotPage.yes') : t('copilotPage.no')}
+          </span>
         </div>
 
         {/* Actions */}
@@ -123,12 +135,12 @@ export function CopilotStatusCard() {
               {isInstalling ? (
                 <>
                   <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  Installing...
+                  {t('copilotPage.installing')}
                 </>
               ) : (
                 <>
                   <Download className="mr-2 h-4 w-4" />
-                  Install copilot-api
+                  {t('copilotPage.installCopilotApi')}
                 </>
               )}
             </Button>
@@ -143,10 +155,10 @@ export function CopilotStatusCard() {
               {isAuthenticating ? (
                 <>
                   <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  Authenticating...
+                  {t('copilotPage.authenticating')}
                 </>
               ) : (
-                'Authenticate with GitHub'
+                t('copilotPage.authenticate')
               )}
             </Button>
           )}
@@ -161,10 +173,10 @@ export function CopilotStatusCard() {
               {isStoppingDaemon ? (
                 <>
                   <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  Stopping...
+                  {t('copilotPage.stopping')}
                 </>
               ) : (
-                'Stop Daemon'
+                t('copilotPage.stop')
               )}
             </Button>
           ) : (
@@ -177,10 +189,10 @@ export function CopilotStatusCard() {
               {isStartingDaemon ? (
                 <>
                   <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  Starting...
+                  {t('copilotPage.starting')}
                 </>
               ) : (
-                'Start Daemon'
+                t('copilotPage.start')
               )}
             </Button>
           )}

ui/src/components/health/health-card.tsx

@@ -2,6 +2,7 @@ import { Card, CardContent } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { CheckCircle, AlertTriangle, XCircle, Wrench } from 'lucide-react';
 import { useFixHealth } from '@/hooks/use-health';
+import { useTranslation } from 'react-i18next';
 
 interface HealthCheck {
   id: string;
@@ -35,6 +36,7 @@ const statusConfig = {
 
 export function HealthCard({ check }: { check: HealthCheck }) {
   const fixMutation = useFixHealth();
+  const { t } = useTranslation();
   const config = statusConfig[check.status];
   const Icon = config.icon;
 
@@ -54,7 +56,7 @@ export function HealthCard({ check }: { check: HealthCheck }) {
               disabled={fixMutation.isPending}
             >
               <Wrench className="w-3 h-3 mr-1" />
-              Fix
+              {t('health.fix')}
             </Button>
           )}
         </div>

ui/src/components/layout/hero-section.tsx

@@ -1,24 +1,27 @@
 import { Badge } from '@/components/ui/badge';
 import { CcsLogo } from '@/components/shared/ccs-logo';
+import { useTranslation } from 'react-i18next';
 
 interface HeroSectionProps {
   version?: string;
 }
 
 export function HeroSection({ version }: HeroSectionProps) {
+  const { t } = useTranslation();
+
   return (
     <div className="flex items-center gap-4">
       <CcsLogo size="lg" showText={false} />
       <div>
         <div className="flex items-center gap-3">
-          <h1 className="text-2xl font-bold">CCS Config</h1>
+          <h1 className="text-2xl font-bold">{t('heroSection.title')}</h1>
           {version && (
             <Badge variant="outline" className="font-mono text-xs">
               v{version}
             </Badge>
           )}
         </div>
-        <p className="text-muted-foreground text-sm mt-1">Claude Code Switch Dashboard</p>
+        <p className="text-muted-foreground text-sm mt-1">{t('heroSection.subtitle')}</p>
       </div>
     </div>
   );

ui/src/components/layout/hub-footer.tsx

@@ -1,26 +1,28 @@
 import { Separator } from '@/components/ui/separator';
 import { Button } from '@/components/ui/button';
 import { FileTextIcon, SettingsIcon, GithubIcon, ExternalLinkIcon } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 export function HubFooter() {
+  const { t } = useTranslation();
   const currentYear = new Date().getFullYear();
 
   const footerLinks = [
     {
       icon: <FileTextIcon className="w-4 h-4" />,
-      label: 'Logs',
+      label: t('hubFooter.logs'),
       href: '#logs',
       onClick: () => console.log('Navigate to Logs'),
     },
     {
       icon: <SettingsIcon className="w-4 h-4" />,
-      label: 'Settings',
+      label: t('hubFooter.settings'),
       href: '#settings',
       onClick: () => console.log('Navigate to Settings'),
     },
     {
       icon: <GithubIcon className="w-4 h-4" />,
-      label: 'GitHub',
+      label: t('hubFooter.github'),
       href: 'https://github.com/kaitranntt/ccs',
       external: true,
     },
@@ -32,7 +34,7 @@ export function HubFooter() {
         <div className="flex items-center space-x-2 text-sm text-muted-foreground">
           <span>CCS v0.0.0</span>
           <Separator orientation="vertical" className="h-4" />
-          <span>© {currentYear} kaitranntt</span>
+          <span>{t('hubFooter.copyright', { year: currentYear })}</span>
         </div>
 
         <div className="ml-auto flex items-center space-x-2">

ui/src/components/layout/theme-toggle.tsx

@@ -1,9 +1,11 @@
 import { Moon, Sun } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { useTheme } from '@/hooks/use-theme';
+import { useTranslation } from 'react-i18next';
 
 export function ThemeToggle() {
   const { theme, setTheme } = useTheme();
+  const { t } = useTranslation();
 
   return (
     <Button
@@ -13,7 +15,7 @@ export function ThemeToggle() {
     >
       <Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
       <Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
-      <span className="sr-only">Toggle theme</span>
+      <span className="sr-only">{t('themeToggle.srLabel')}</span>
     </Button>
   );
 }

ui/src/components/logs/logs-config-card.tsx

@@ -13,6 +13,7 @@ import {
 import { Switch } from '@/components/ui/switch';
 import type { LogsConfig, UpdateLogsConfigPayload } from '@/lib/api-client';
 import { cn } from '@/lib/utils';
+// TODO i18n: import { useTranslation } from 'react-i18next'; when keys are ready
 
 function parseInteger(value: string, fallback: number) {
   const parsed = Number.parseInt(value, 10);
@@ -32,6 +33,8 @@ export function LogsConfigCard({
   onSave: (payload: UpdateLogsConfigPayload) => void;
   isPending: boolean;
 }) {
+  // TODO i18n: uncomment when keys for Commit Changes, Rollback Draft, etc. are added
+  // const { t } = useTranslation();
   const [draft, setDraft] = useState(config);
 
   useEffect(() => {
@@ -247,6 +250,7 @@ export function LogsConfigCard({
             className="h-10 w-full gap-2 rounded-xl bg-primary text-[11px] font-semibold uppercase tracking-[0.14em] shadow-lg shadow-primary/20 transition-all hover:scale-[1.02] active:scale-[0.98]"
           >
             <Save className="h-3.5 w-3.5" />
+            {/* TODO i18n: missing key for "Commit Changes" */}
             Commit Changes
           </Button>
           <Button
@@ -256,6 +260,7 @@ export function LogsConfigCard({
             className="h-9 gap-2 text-[10px] font-medium uppercase tracking-[0.12em] text-foreground/45 hover:text-foreground"
           >
             <RotateCcw className="h-3 w-3" />
+            {/* TODO i18n: missing key for "Rollback Draft" */}
             Rollback Draft
           </Button>
         </div>

ui/src/components/logs/logs-detail-panel.tsx

@@ -15,6 +15,7 @@ import type { LogsEntry } from '@/lib/api-client';
 import { cn } from '@/lib/utils';
 import { LogLevelBadge } from './log-level-badge';
 import { formatJson } from './utils';
+import { useTranslation } from 'react-i18next';
 
 function MetaRow({
   label,
@@ -52,6 +53,8 @@ export function LogsDetailPanel({
   entry: LogsEntry | null;
   sourceLabel?: string;
 }) {
+  const { t } = useTranslation();
+
   if (!entry) {
     return (
       <div className="flex h-full flex-col items-center justify-center p-8 text-center animate-in fade-in duration-1000">
@@ -63,6 +66,7 @@ export function LogsDetailPanel({
         </div>
         <div className="max-w-xs space-y-3">
           <h3 className="text-[15px] font-semibold uppercase tracking-[0.14em] text-foreground/65">
+            {/* TODO i18n: missing key for "Inspector Standby" */}
             Inspector Standby
           </h3>
           <p className="text-[13px] leading-relaxed text-muted-foreground/55 font-medium">
@@ -134,13 +138,14 @@ export function LogsDetailPanel({
                 className="min-w-0 gap-2 rounded-lg px-3 py-2 text-[11px] font-semibold uppercase tracking-[0.1em] transition-all data-[state=active]:bg-background data-[state=active]:text-primary data-[state=active]:shadow-sm"
               >
                 <Info className="h-3.5 w-3.5" />
-                Details
+                {t('logsDetailPanel.details')}
               </TabsTrigger>
               <TabsTrigger
                 value="raw"
                 className="min-w-0 gap-2 rounded-lg px-3 py-2 text-[11px] font-semibold uppercase tracking-[0.1em] transition-all data-[state=active]:bg-background data-[state=active]:text-primary data-[state=active]:shadow-sm"
               >
                 <FileJson className="h-3.5 w-3.5" />
+                {/* TODO i18n: missing key for "Raw Context" */}
                 Raw Context
               </TabsTrigger>
             </TabsList>

ui/src/components/logs/logs-entry-list.tsx

@@ -3,6 +3,7 @@ import { ScrollArea } from '@/components/ui/scroll-area';
 import type { LogsEntry } from '@/lib/api-client';
 import { cn } from '@/lib/utils';
 import { LogLevelBadge } from './log-level-badge';
+import { useTranslation } from 'react-i18next';
 
 export function LogsEntryList({
   entries,
@@ -19,6 +20,8 @@ export function LogsEntryList({
   isLoading: boolean;
   isFetching: boolean;
 }) {
+  const { t } = useTranslation();
+
   return (
     <div className="flex min-h-0 flex-1 flex-col bg-background/50 backdrop-blur-sm">
       <div className="flex shrink-0 items-center justify-between border-b border-border bg-card/40 px-6 py-3 shadow-sm">
@@ -53,13 +56,23 @@ export function LogsEntryList({
       </div>
 
       <div className="flex items-center gap-0 border-b border-border bg-muted/30 px-0 py-2 text-[10px] font-semibold uppercase tracking-[0.12em] text-foreground/45">
-        <div className="w-[6.5rem] shrink-0 px-6">Time</div>
-        <div className="w-14 shrink-0 border-l border-border/10 px-2 text-center">Lvl</div>
-        <div className="w-[15rem] shrink-0 border-l border-border/10 px-4">Source</div>
-        <div className="flex-1 border-l border-border/10 px-4">Message</div>
-        <div className="w-[5.5rem] shrink-0 border-l border-border/10 px-2 text-center">Proc</div>
-        <div className="w-[5.5rem] shrink-0 border-l border-border/10 px-3 text-center">Run</div>
-        <div className="w-11 shrink-0 border-l border-border/10 px-2 text-center">Open</div>
+        <div className="w-[6.5rem] shrink-0 px-6">{t('logsConfig.time')}</div>
+        <div className="w-14 shrink-0 border-l border-border/10 px-2 text-center">
+          {t('logsConfig.level')}
+        </div>
+        <div className="w-[15rem] shrink-0 border-l border-border/10 px-4">
+          {t('logsConfig.source')}
+        </div>
+        <div className="flex-1 border-l border-border/10 px-4">{t('logsConfig.message')}</div>
+        <div className="w-[5.5rem] shrink-0 border-l border-border/10 px-2 text-center">
+          {t('logsConfig.proc')}
+        </div>
+        <div className="w-[5.5rem] shrink-0 border-l border-border/10 px-3 text-center">
+          {t('logsConfig.run')}
+        </div>
+        <div className="w-11 shrink-0 border-l border-border/10 px-2 text-center">
+          {t('logsConfig.open')}
+        </div>
       </div>
 
       <div className="flex-1 min-h-0 overflow-hidden">

ui/src/components/logs/logs-filters.tsx

@@ -6,6 +6,7 @@ import type { LogsSource } from '@/lib/api-client';
 import { cn } from '@/lib/utils';
 import type { LogsLevelFilter, LogsSourceFilter } from '@/hooks/use-logs';
 import { getLogLevelOptions } from '@/hooks/use-logs';
+import { useTranslation } from 'react-i18next';
 
 export function LogsFilters({
   sources,
@@ -32,6 +33,7 @@ export function LogsFilters({
   onRefresh: () => void;
   isRefreshing: boolean;
 }) {
+  const { t } = useTranslation();
   const levels = getLogLevelOptions();
   const limits = [50, 100, 150, 250];
 
@@ -188,7 +190,7 @@ export function LogsFilters({
             <div className="absolute inset-0 bg-gradient-to-r from-transparent via-white/10 to-transparent -translate-x-full group-hover:translate-x-full transition-transform duration-1000" />
             <div className="flex items-center gap-2">
               <RefreshCw className={cn('h-3.5 w-3.5', isRefreshing && 'animate-spin')} />
-              <span>Refresh Entries</span>
+              <span>{t('logsConfig.refreshEntries')}</span>
             </div>
           </Button>
         </div>

ui/src/components/logs/logs-overview-cards.tsx

@@ -2,6 +2,7 @@ import { Activity, Archive, Database, RadioTower } from 'lucide-react';
 import type { LogsConfig, LogsEntry, LogsSource } from '@/lib/api-client';
 import { cn } from '@/lib/utils';
 import { formatCount, formatLogTimestamp, formatRelativeLogTime } from './utils';
+// TODO i18n: import { useTranslation } from 'react-i18next'; when keys are ready
 
 function MetricCard({
   label,
@@ -43,12 +44,15 @@ export function LogsOverviewCards({
   entries: LogsEntry[];
   latestTimestamp: string | null;
 }) {
+  // TODO i18n: uncomment when keys for Pipeline/Retention/Coverage/Visible Entries are added
+  // const { t } = useTranslation();
   const nativeSources = sources.filter((source) => source.kind === 'native').length;
   const legacySources = sources.length - nativeSources;
   const errorCount = entries.filter((entry) => entry.level === 'error').length;
 
   return (
     <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-4">
+      {/* TODO i18n: missing keys for Pipeline/Retention/Coverage/Visible Entries labels and detail strings */}
       <MetricCard
         label="Pipeline"
         value={config.enabled ? 'Enabled' : 'Disabled'}

ui/src/components/logs/logs-page-skeleton.tsx

@@ -1,9 +1,12 @@
 import { Card, CardContent, CardHeader } from '@/components/ui/card';
 import { Skeleton } from '@/components/ui/skeleton';
+import { useTranslation } from 'react-i18next';
 
 export function LogsPageSkeleton() {
+  const { t } = useTranslation();
+
   return (
-    <div className="space-y-6" aria-label="Loading logs workspace">
+    <div className="space-y-6" aria-label={t('logsPageSkeleton.loadingLogs')}>
       <Card className="gap-4">
         <CardHeader className="space-y-3">
           <Skeleton className="h-4 w-28" />

ui/src/components/logs/utils.ts

@@ -1,4 +1,9 @@
 import type { LogsLevel } from '@/lib/api-client';
+// NOTE: This module contains utility functions that are not directly i18n-aware.
+// String literals here ("No activity yet", "Error", etc.) are used as fallbacks
+// and defaults in non-component contexts. Components consuming these values
+// should wrap them with t() calls when rendering.
+// TODO i18n: Consider making formatRelativeLogTime/formatLogTimestamp i18n-aware
 
 export function formatLogTimestamp(timestamp: string | null | undefined) {
   if (!timestamp) {

ui/src/components/monitoring/auth-monitor/components/inline-stats-badge.tsx

@@ -3,6 +3,7 @@
  */
 
 import { CheckCircle2, XCircle } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 interface InlineStatsBadgeProps {
   success: number;
@@ -10,8 +11,13 @@ interface InlineStatsBadgeProps {
 }
 
 export function InlineStatsBadge({ success, failure }: InlineStatsBadgeProps) {
+  const { t } = useTranslation();
   if (success === 0 && failure === 0) {
-    return <span className="text-[9px] text-muted-foreground/50 font-mono">no activity</span>;
+    return (
+      <span className="text-[9px] text-muted-foreground/50 font-mono">
+        {t('authMonitorLive.noActivity')}
+      </span>
+    );
   }
 
   return (

ui/src/components/monitoring/auth-monitor/components/provider-card.tsx

@@ -12,6 +12,7 @@ import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/comp
 import type { ProviderStats } from '../types';
 import { getSuccessRate } from '../utils';
 import { InlineStatsBadge } from './inline-stats-badge';
+import { useTranslation } from 'react-i18next';
 
 interface ProviderCardProps {
   stats: ProviderStats;
@@ -30,6 +31,7 @@ export function ProviderCard({
   onMouseEnter,
   onMouseLeave,
 }: ProviderCardProps) {
+  const { t } = useTranslation();
   const successRate = getSuccessRate(stats.successCount, stats.failureCount);
   const providerColor = PROVIDER_COLORS[stats.provider.toLowerCase()] || '#6b7280';
 
@@ -59,6 +61,7 @@ export function ProviderCard({
             {stats.displayName}
           </h3>
           <p className="text-[10px] text-muted-foreground">
+            {/* TODO i18n: missing key for account count */}
             {stats.accountCount} account{stats.accountCount !== 1 ? 's' : ''}
           </p>
         </div>
@@ -73,11 +76,11 @@ export function ProviderCard({
       <div className="space-y-2">
         {/* Inline success/failure stats - immediately visible */}
         <div className="flex justify-between items-center text-xs">
-          <span className="text-muted-foreground">Stats</span>
+          <span className="text-muted-foreground">{t('authMonitorLive.stats')}</span>
           <InlineStatsBadge success={stats.successCount} failure={stats.failureCount} />
         </div>
         <div className="flex justify-between text-xs">
-          <span className="text-muted-foreground">Success Rate</span>
+          <span className="text-muted-foreground">{t('authMonitorLive.successRate')}</span>
           <span
             className="font-mono font-semibold"
             style={{
@@ -125,11 +128,11 @@ export function ProviderCard({
                     <TooltipTrigger asChild>
                       <AlertTriangle
                         className="absolute -top-1 -right-1 w-2.5 h-2.5 text-amber-500"
-                        aria-label="Missing Project ID"
+                        aria-label={t('providerCard.missingProjectIdAria')}
                       />
                     </TooltipTrigger>
                     <TooltipContent side="top" className="text-xs">
-                      Missing Project ID - re-add account to fix
+                      {/* TODO i18n: missing key */}Missing Project ID - re-add account to fix
                     </TooltipContent>
                   </Tooltip>
                 </TooltipProvider>

ui/src/components/monitoring/auth-monitor/index.tsx

@@ -146,17 +146,27 @@ export function AuthMonitor() {
       <div className="flex items-center justify-between px-4 py-2.5 border-b border-border bg-gradient-to-r from-emerald-500/5 via-transparent to-transparent dark:from-emerald-500/10">
         <div className="flex items-center gap-2">
           <LivePulse />
-          <span className="text-xs font-semibold tracking-tight text-foreground">LIVE</span>
-          <span className="text-[10px] text-muted-foreground">Account Monitor</span>
+          <span className="text-xs font-semibold tracking-tight text-foreground">
+            {t('authMonitorLive.live')}
+          </span>
+          <span className="text-[10px] text-muted-foreground">
+            {t('authMonitorLive.accountMonitor')}
+          </span>
         </div>
         <div className="flex items-center gap-4 text-[10px] text-muted-foreground">
           <div className="flex items-center gap-1.5">
             <Radio className="w-3 h-3 animate-pulse" />
-            <span>Updated {timeSinceUpdate || 'now'}</span>
+            <span>
+              {timeSinceUpdate
+                ? t('authMonitorLive.updated', { time: timeSinceUpdate })
+                : t('authMonitorLive.updatedNow')}
+            </span>
           </div>
           <span className="text-muted-foreground/50">|</span>
           <span>{t('authMonitor.accountsCount', { count: displayedAccountCount })}</span>
-          <span className="font-mono">{displayedTotalRequests.toLocaleString()} req</span>
+          <span className="font-mono">
+            {displayedTotalRequests.toLocaleString()} {t('authMonitorLive.requestsLabel')}
+          </span>
         </div>
       </div>
 
@@ -210,6 +220,7 @@ export function AuthMonitor() {
           />
         ) : (
           <div className="p-6">
+            {/* TODO i18n: missing key for "Request Distribution by Provider" */}
             <div className="text-[10px] text-muted-foreground uppercase tracking-widest mb-4">
               Request Distribution by Provider
             </div>

ui/src/components/monitoring/error-logs/log-content-panel.tsx

@@ -133,8 +133,12 @@ export function LogContentPanel({ name, absolutePath }: LogContentPanelProps) {
       <div className="flex-1 overflow-hidden bg-card/30">
         {activeTab === 'overview' && <OverviewTab parsed={parsed} />}
         {activeTab === 'headers' && <HeadersTab headers={parsed.requestHeaders} />}
-        {activeTab === 'request' && <BodyTab content={parsed.requestBody} label="Request" />}
-        {activeTab === 'response' && <BodyTab content={parsed.responseBody} label="Response" />}
+        {activeTab === 'request' && (
+          <BodyTab content={parsed.requestBody} label={t('errorLogs.tabRequest')} />
+        )}
+        {activeTab === 'response' && (
+          <BodyTab content={parsed.responseBody} label={t('errorLogs.tabResponse')} />
+        )}
         {activeTab === 'raw' && <RawTab content={content} />}
       </div>
     </div>

ui/src/components/monitoring/error-logs/tab-components.tsx

@@ -144,9 +144,10 @@ export function OverviewTab({ parsed }: { parsed: ParsedErrorLog }) {
 
 /** Headers tab content */
 export function HeadersTab({ headers }: { headers: Record<string, string> }) {
+  const { t } = useTranslation();
   const entries = Object.entries(headers);
   if (entries.length === 0) {
-    return <div className="p-4 text-xs text-muted-foreground">No headers available</div>;
+    return <div className="p-4 text-xs text-muted-foreground">{t('errorLogs.noHeaders')}</div>;
   }
 
   return (

ui/src/components/profiles/editor/friendly-ui-section.tsx

@@ -20,6 +20,7 @@ import { isOpenRouterProfile, extractTierMapping, applyTierMapping } from './uti
 import { toast } from 'sonner';
 import { cn } from '@/lib/utils';
 import i18n from '@/lib/i18n';
+import { useTranslation } from 'react-i18next';
 import type { Settings, SettingsResponse } from './types';
 import type { CliTarget } from '@/lib/api-client';
 
@@ -50,6 +51,7 @@ export function FriendlyUISection({
   onAddEnvVar,
   onEnvBulkChange,
 }: FriendlyUISectionProps) {
+  const { t } = useTranslation();
   const isOpenRouter = isOpenRouterProfile(currentSettings);
   const settingsEnv = currentSettings?.env;
 
@@ -124,11 +126,13 @@ export function FriendlyUISection({
       <Tabs defaultValue="env" className="h-full w-full min-w-0 flex flex-col">
         <div className="px-4 pt-4 shrink-0">
           <TabsList className="w-full">
+            {/* TODO i18n: missing key for "Configuration" tab label */}
             <TabsTrigger value="env" className="flex-1">
-              {isOpenRouter ? 'Configuration' : 'Environment Variables'}
+              {isOpenRouter ? 'Configuration' : t('settingsDialog.envTab')}
             </TabsTrigger>
+            {/* TODO i18n: missing key for "Info & Usage" tab label */}
             <TabsTrigger value="info" className="flex-1">
-              Info & Usage
+              Info &amp; Usage
             </TabsTrigger>
           </TabsList>
         </div>
@@ -145,6 +149,7 @@ export function FriendlyUISection({
                   <div className="h-full overflow-y-auto overflow-x-hidden p-4 space-y-6">
                     {/* Model Selection - Primary Focus */}
                     <div className="space-y-3">
+                      {/* TODO i18n: missing key for "Model Selection" label */}
                       <Label className="text-sm font-medium">Model Selection</Label>
                       <OpenRouterModelPicker
                         value={currentEnv.ANTHROPIC_MODEL}
@@ -162,7 +167,7 @@ export function FriendlyUISection({
 
                     {/* API Key */}
                     <div className="space-y-2">
-                      <Label className="text-sm font-medium">API Key</Label>
+                      <Label className="text-sm font-medium">{t('profileDialog.apiKey')}</Label>
                       <MaskedInput
                         value={currentEnv.ANTHROPIC_AUTH_TOKEN || ''}
                         onChange={(e) => onEnvValueChange('ANTHROPIC_AUTH_TOKEN', e.target.value)}
@@ -193,6 +198,7 @@ export function FriendlyUISection({
                             )}
                           />
                           <Settings2 className="h-4 w-4" />
+                          {/* TODO i18n: missing key for "Additional Variables" label */}
                           <span>Additional Variables</span>
                           <span className="text-xs font-normal opacity-70">
                             ({unmanagedEnvVars.length})
@@ -220,18 +226,18 @@ export function FriendlyUISection({
                 {/* Fixed Add Variable Input at Bottom */}
                 <div className="p-4 border-t bg-background shrink-0">
                   <Label className="text-xs font-medium text-muted-foreground">
-                    Add Environment Variable
+                    {t('envEditor.addVariable')}
                   </Label>
                   <div className="flex gap-2 mt-2">
                     <Input
-                      placeholder="VARIABLE_NAME"
+                      placeholder={t('envEditor.keyPlaceholder')}
                       value={newEnvKey}
                       onChange={(e) => onNewEnvKeyChange(e.target.value.toUpperCase())}
                       className="font-mono text-sm h-8 w-2/5"
                       onKeyDown={(e) => e.key === 'Enter' && newEnvKey.trim() && onAddEnvVar()}
                     />
                     <Input
-                      placeholder="value"
+                      placeholder={t('envEditor.valuePlaceholder')}
                       value={newEnvValue}
                       onChange={(e) => onNewEnvValueChange(e.target.value)}
                       className="font-mono text-sm h-8 flex-1"

ui/src/components/profiles/editor/header-section.tsx

@@ -13,6 +13,7 @@ import {
   SelectValue,
 } from '@/components/ui/select';
 import { Save, Loader2, Trash2, RefreshCw } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { OpenRouterBadge } from '@/components/profiles/openrouter-badge';
 import { isOpenRouterProfile } from './utils';
 import type { Settings } from './types';
@@ -49,6 +50,7 @@ export function HeaderSection({
   onDelete,
   onSave,
 }: HeaderSectionProps) {
+  const { t } = useTranslation();
   const isMutating = isSaving || isTargetSaving;
   const disableHeaderActions = isLoading || isMutating;
 
@@ -66,11 +68,11 @@ export function HeaderSection({
         </div>
         {data && (
           <p className="text-xs text-muted-foreground mt-0.5">
-            Last modified: {new Date(data.mtime).toLocaleString()}
+            {t('profileEditor.lastModified')}: {new Date(data.mtime).toLocaleString()}
           </p>
         )}
         <div className="mt-2 flex items-center gap-2">
-          <span className="text-xs text-muted-foreground">Default target:</span>
+          <span className="text-xs text-muted-foreground">{t('profileEditor.defaultTarget')}:</span>
           <Select
             value={target}
             onValueChange={(value) => {
@@ -83,9 +85,9 @@ export function HeaderSection({
               <SelectValue />
             </SelectTrigger>
             <SelectContent>
-              <SelectItem value="claude">Claude Code</SelectItem>
-              <SelectItem value="droid">Factory Droid</SelectItem>
-              <SelectItem value="codex">Codex CLI</SelectItem>
+              <SelectItem value="claude">{t('profileEditor.targetClaude')}</SelectItem>
+              <SelectItem value="droid">{t('profileEditor.targetDroid')}</SelectItem>
+              <SelectItem value="codex">{t('profileEditor.targetCodex')}</SelectItem>
             </SelectContent>
           </Select>
           {isTargetSaving && <Loader2 className="w-3.5 h-3.5 animate-spin text-muted-foreground" />}
@@ -104,12 +106,12 @@ export function HeaderSection({
           {isSaving ? (
             <>
               <Loader2 className="w-4 h-4 mr-1 animate-spin" />
-              Saving...
+              {t('profileEditor.saving')}
             </>
           ) : (
             <>
               <Save className="w-4 h-4 mr-1" />
-              Save
+              {t('settingsAuth.save')}
             </>
           )}
         </Button>

ui/src/components/profiles/editor/image-analysis-status-section.tsx

@@ -1,5 +1,6 @@
 import { ArrowUpRight, Image as ImageIcon } from 'lucide-react';
 import { Link } from 'react-router-dom';
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Switch } from '@/components/ui/switch';
@@ -15,33 +16,38 @@ interface ImageAnalysisStatusSectionProps {
   onToggleNativeRead?: (enabled: boolean) => void;
 }
 
-const TARGET_LABELS: Record<CliTarget, string> = {
-  claude: 'Claude Code',
-  droid: 'Factory Droid',
-  codex: 'Codex CLI',
-};
-
 function getPreviewLabel(
+  t: (key: string) => string,
   source: 'saved' | 'editor',
   previewState: ImageAnalysisStatusSectionProps['previewState']
 ) {
-  if (previewState === 'refreshing') return 'Refreshing preview';
-  if (previewState === 'invalid') return 'Saved status';
-  return source === 'editor' ? 'Live preview' : 'Saved status';
+  if (previewState === 'refreshing') return t('imageAnalysisStatus.refreshingPreview');
+  if (previewState === 'invalid') return t('imageAnalysisStatus.savedStatus');
+  return source === 'editor'
+    ? t('imageAnalysisStatus.livePreview')
+    : t('imageAnalysisStatus.savedStatus');
 }
 
-function getHeaderLabel(status: ImageAnalysisStatus, target: CliTarget): string {
-  if (status.status === 'disabled') return 'Disabled globally';
-  if (target !== 'claude') return `${TARGET_LABELS[target]} bypasses the hook`;
-  if (status.nativeReadPreference) return 'Native image reading';
-  if (status.status === 'hook-missing') return 'Setup needed';
-  if (status.authReadiness === 'missing') return 'Needs auth';
-  if (status.proxyReadiness === 'unavailable') return 'Needs proxy';
-  if (status.effectiveRuntimeMode === 'native-read') return 'Native fallback';
-  return 'Transformer ready';
+function getHeaderLabel(
+  t: (key: string, options?: Record<string, unknown>) => string,
+  status: ImageAnalysisStatus,
+  target: CliTarget
+): string {
+  if (status.status === 'disabled') return t('imageAnalysisStatus.disabledGlobally');
+  if (target !== 'claude')
+    return t('imageAnalysisStatus.targetBypassesHook', {
+      target: t(`imageAnalysisStatus.targetLabel.${target}`),
+    });
+  if (status.nativeReadPreference) return t('imageAnalysisStatus.nativeImageReading');
+  if (status.status === 'hook-missing') return t('imageAnalysisStatus.setupNeeded');
+  if (status.authReadiness === 'missing') return t('imageAnalysisStatus.needsAuth');
+  if (status.proxyReadiness === 'unavailable') return t('imageAnalysisStatus.needsProxy');
+  if (status.effectiveRuntimeMode === 'native-read') return t('imageAnalysisStatus.nativeFallback');
+  return t('imageAnalysisStatus.transformerReady');
 }
 
 function getHeaderBadge(
+  t: (key: string) => string,
   status: ImageAnalysisStatus,
   target: CliTarget
 ): {
@@ -50,75 +56,93 @@ function getHeaderBadge(
 } {
   if (status.status === 'disabled') {
     return {
-      label: 'Disabled',
+      label: t('imageAnalysisStatus.badgeDisabled'),
       className: 'border-border/80 bg-background/85 text-muted-foreground',
     };
   }
   if (target !== 'claude') {
     return {
-      label: 'Bypassed',
+      label: t('imageAnalysisStatus.badgeBypassed'),
       className: 'border-sky-500/25 bg-sky-500/10 text-sky-800 dark:text-sky-200',
     };
   }
   if (status.nativeReadPreference) {
     return {
-      label: 'Native',
+      label: t('imageAnalysisStatus.badgeNative'),
       className: 'border-emerald-500/25 bg-emerald-500/10 text-emerald-800 dark:text-emerald-200',
     };
   }
   if (status.status === 'hook-missing' || status.authReadiness === 'missing') {
     return {
-      label: status.status === 'hook-missing' ? 'Setup' : 'Auth',
+      label:
+        status.status === 'hook-missing'
+          ? t('imageAnalysisStatus.badgeSetup')
+          : t('imageAnalysisStatus.badgeAuth'),
       className: 'border-amber-500/25 bg-amber-500/10 text-amber-800 dark:text-amber-200',
     };
   }
   if (status.proxyReadiness === 'unavailable') {
     return {
-      label: 'Proxy',
+      label: t('imageAnalysisStatus.badgeProxy'),
       className: 'border-amber-500/25 bg-amber-500/10 text-amber-800 dark:text-amber-200',
     };
   }
   return {
-    label: 'Ready',
+    label: t('imageAnalysisStatus.badgeReady'),
     className: 'border-emerald-500/25 bg-emerald-500/10 text-emerald-800 dark:text-emerald-200',
   };
 }
 
-function getToggleSummary(status: ImageAnalysisStatus, target: CliTarget): string {
+function getToggleSummary(
+  t: (key: string, options?: Record<string, unknown>) => string,
+  status: ImageAnalysisStatus,
+  target: CliTarget
+): string {
   if (status.nativeReadPreference) {
     if (status.profileModel && status.nativeImageCapable) {
-      return `${status.profileModel} looks image-ready. CCS will bypass the transformer here.`;
+      return t('imageAnalysisStatus.toggleSummaryNativeCapable', { model: status.profileModel });
     }
     if (status.profileModel) {
-      return `CCS will prefer native reading for ${status.profileModel}.`;
+      return t('imageAnalysisStatus.toggleSummaryNativeModel', { model: status.profileModel });
     }
-    return 'CCS will prefer native image reading for this profile.';
+    return t('imageAnalysisStatus.toggleSummaryNativeDefault');
   }
 
   if (!status.backendDisplayName && target === 'claude') {
-    return 'This profile currently stays on native file access.';
+    return t('imageAnalysisStatus.toggleSummaryNativeFileAccess');
   }
 
   if (!status.backendDisplayName) {
-    return `Saved Claude-side image routing is inactive while ${TARGET_LABELS[target]} is selected.`;
+    return t('imageAnalysisStatus.toggleSummaryInactiveTarget', {
+      target: t(`imageAnalysisStatus.targetLabel.${target}`),
+    });
   }
 
   const modelSuffix = status.model ? ` · ${status.model}` : '';
-  return `Transformer route: ${status.backendDisplayName}${modelSuffix}.`;
+  return t('imageAnalysisStatus.toggleSummaryTransformerRoute', {
+    backend: status.backendDisplayName,
+    modelSuffix,
+  });
 }
 
-function getExceptionalNote(status: ImageAnalysisStatus, target: CliTarget): string | null {
+function getExceptionalNote(
+  t: (key: string, options?: Record<string, unknown>) => string,
+  status: ImageAnalysisStatus,
+  target: CliTarget
+): string | null {
   if (status.status === 'disabled') {
-    return 'Image is disabled globally in CCS settings.';
+    return t('imageAnalysisStatus.noteDisabledGlobally');
   }
   if (target !== 'claude') {
-    return `Current target ${TARGET_LABELS[target]} bypasses the Claude Read hook.`;
+    return t('imageAnalysisStatus.noteTargetBypassesHook', {
+      target: t(`imageAnalysisStatus.targetLabel.${target}`),
+    });
   }
   if (status.nativeReadPreference) {
     return status.nativeImageCapable === true ? null : status.nativeImageReason;
   }
   if (status.status === 'hook-missing') {
-    return 'Persist the profile hook before transformer routing can run here.';
+    return t('imageAnalysisStatus.notePersistHook');
   }
   if (status.authReadiness === 'missing') {
     return status.authReason;
@@ -137,6 +161,8 @@ export function ImageAnalysisStatusSection({
   nativeReadPreferenceOverride,
   onToggleNativeRead,
 }: ImageAnalysisStatusSectionProps) {
+  const { t } = useTranslation();
+
   if (!status) {
     return (
       <div className="rounded-2xl border bg-muted/20 px-4 py-3" aria-live="polite">
@@ -148,12 +174,12 @@ export function ImageAnalysisStatusSection({
 
   const nativeReadChecked = nativeReadPreferenceOverride ?? status.nativeReadPreference;
   const effectiveStatus = { ...status, nativeReadPreference: nativeReadChecked };
-  const headerBadge = getHeaderBadge(effectiveStatus, target);
-  const note = getExceptionalNote(effectiveStatus, target);
+  const headerBadge = getHeaderBadge(t, effectiveStatus, target);
+  const note = getExceptionalNote(t, effectiveStatus, target);
   const capabilityLabel = status.nativeImageCapable
-    ? 'Verified'
+    ? t('imageAnalysisStatus.capabilityVerified')
     : status.profileModel
-      ? 'Unknown'
+      ? t('imageAnalysisStatus.capabilityUnknown')
       : null;
 
   return (
@@ -166,13 +192,14 @@ export function ImageAnalysisStatusSection({
             </div>
             <div className="min-w-0">
               <div className="flex flex-wrap items-center gap-2">
-                <h3 className="text-sm font-semibold">Image</h3>
+                <h3 className="text-sm font-semibold">{t('imageAnalysisStatus.sectionTitle')}</h3>
                 <Badge className={cn('h-5 border px-1.5 text-[10px]', headerBadge.className)}>
                   {headerBadge.label}
                 </Badge>
               </div>
               <p className="text-xs text-muted-foreground">
-                {getPreviewLabel(source, previewState)} · {getHeaderLabel(effectiveStatus, target)}
+                {getPreviewLabel(t, source, previewState)} ·{' '}
+                {getHeaderLabel(t, effectiveStatus, target)}
               </p>
             </div>
           </div>
@@ -180,7 +207,7 @@ export function ImageAnalysisStatusSection({
 
         <Button size="sm" variant="outline" className="h-8 shrink-0" asChild>
           <Link to="/settings?tab=image">
-            Open Settings
+            {t('imageAnalysisStatus.openSettings')}
             <ArrowUpRight className="ml-1 h-3.5 w-3.5" />
           </Link>
         </Button>
@@ -190,7 +217,9 @@ export function ImageAnalysisStatusSection({
         <div className="flex items-start justify-between gap-3">
           <div className="min-w-0">
             <div className="flex flex-wrap items-center gap-2">
-              <div className="text-sm font-medium text-foreground">Use native image reading</div>
+              <div className="text-sm font-medium text-foreground">
+                {t('imageAnalysisStatus.useNativeImageReading')}
+              </div>
               {capabilityLabel && (
                 <Badge variant="outline" className="h-5 px-1.5 text-[10px]">
                   {capabilityLabel}
@@ -198,7 +227,7 @@ export function ImageAnalysisStatusSection({
               )}
             </div>
             <p className="mt-1 text-xs leading-5 text-muted-foreground">
-              {getToggleSummary(effectiveStatus, target)}
+              {getToggleSummary(t, effectiveStatus, target)}
             </p>
           </div>
 
@@ -206,7 +235,7 @@ export function ImageAnalysisStatusSection({
             checked={nativeReadChecked}
             onCheckedChange={onToggleNativeRead}
             disabled={!onToggleNativeRead}
-            aria-label="Use native image reading"
+            aria-label={t('imageAnalysisStatus.useNativeImageReading')}
           />
         </div>
       </div>

ui/src/components/profiles/editor/index.tsx

@@ -10,6 +10,7 @@ import { Button } from '@/components/ui/button';
 import { ConfirmDialog } from '@/components/shared/confirm-dialog';
 import { Loader2, Code2, RefreshCw } from 'lucide-react';
 import { toast } from 'sonner';
+import { useTranslation } from 'react-i18next';
 
 import { HeaderSection } from './header-section';
 import { FriendlyUISection } from './friendly-ui-section';
@@ -24,6 +25,7 @@ export function ProfileEditor({
   onDelete,
   onHasChangesUpdate,
 }: ProfileEditorProps) {
+  const { t } = useTranslation();
   const [localEdits, setLocalEdits] = useState<Record<string, string>>({});
   const [conflictDialog, setConflictDialog] = useState(false);
   const [rawJsonEdits, setRawJsonEdits] = useState<string | null>(null);
@@ -299,15 +301,15 @@ export function ProfileEditor({
       {isLoading ? (
         <div className="flex-1 flex items-center justify-center">
           <Loader2 className="w-8 h-8 animate-spin text-muted-foreground" />
-          <span className="ml-3 text-muted-foreground">Loading settings...</span>
+          <span className="ml-3 text-muted-foreground">{t('settingsDialog.loadingSettings')}</span>
         </div>
       ) : isError ? (
         <div className="flex-1 flex items-center justify-center">
           <div className="text-center space-y-3">
-            <p className="text-sm text-muted-foreground">Failed to load settings.</p>
+            <p className="text-sm text-muted-foreground">{t('settingsPage.failedLoad')}</p>
             <Button variant="outline" size="sm" onClick={() => refetch()}>
               <RefreshCw className="w-4 h-4 mr-1" />
-              Retry
+              {t('apiProfiles.retry')}
             </Button>
           </div>
         </div>
@@ -332,7 +334,7 @@ export function ProfileEditor({
             <div className="px-6 py-2 bg-muted/30 border-b flex items-center gap-2 shrink-0 h-[45px]">
               <Code2 className="w-4 h-4 text-muted-foreground" />
               <span className="text-sm font-medium text-muted-foreground">
-                Raw Configuration (JSON)
+                {t('rawEditorSection.rawConfig')}
               </span>
             </div>
             <RawEditorSection
@@ -355,9 +357,9 @@ export function ProfileEditor({
 
       <ConfirmDialog
         open={conflictDialog}
-        title="File Modified Externally"
-        description="Overwrite with your changes or discard?"
-        confirmText="Overwrite"
+        title={t('settingsDialog.conflictTitle')}
+        description={t('settingsDialog.conflictDesc')}
+        confirmText={t('settingsDialog.overwrite')}
         variant="destructive"
         onConfirm={() => handleConflictResolve(true)}
         onCancel={() => handleConflictResolve(false)}

ui/src/components/profiles/editor/raw-editor-section.tsx

@@ -5,6 +5,7 @@
 
 import { Suspense, lazy } from 'react';
 import { Loader2, X, AlertTriangle } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { GlobalEnvIndicator } from '@/components/shared/global-env-indicator';
 import { ImageAnalysisStatusSection } from './image-analysis-status-section';
 import type { Settings } from './types';
@@ -44,6 +45,7 @@ export function RawEditorSection({
   onChange,
   missingRequiredFields = [],
 }: RawEditorSectionProps) {
+  const { t } = useTranslation();
   const hasMissingFields = missingRequiredFields.length > 0;
 
   return (
@@ -51,7 +53,9 @@ export function RawEditorSection({
       fallback={
         <div className="flex items-center justify-center h-full">
           <Loader2 className="w-6 h-6 animate-spin text-muted-foreground" />
-          <span className="ml-2 text-muted-foreground">Loading editor...</span>
+          <span className="ml-2 text-muted-foreground">
+            {t('profileEditorSections.loadingEditor')}
+          </span>
         </div>
       }
     >
@@ -59,7 +63,7 @@ export function RawEditorSection({
         {!isRawJsonValid && rawJsonEdits !== null && (
           <div className="mb-2 px-3 py-2 bg-destructive/10 text-destructive text-sm rounded-md flex items-center gap-2 mx-6 mt-4 shrink-0">
             <X className="w-4 h-4" />
-            Invalid JSON syntax
+            {t('profileEditor.invalidJson')}
           </div>
         )}
         {isRawJsonValid && hasMissingFields && (
@@ -67,13 +71,13 @@ export function RawEditorSection({
             <AlertTriangle className="w-4 h-4 mt-0.5 text-amber-500 shrink-0" />
             <div>
               <span className="font-medium text-amber-600 dark:text-amber-400">
-                Missing required fields:
+                {t('profileEditor.missingFields')}:
               </span>{' '}
               <code className="text-xs bg-muted px-1 py-0.5 rounded">
                 {missingRequiredFields.join(', ')}
               </code>
               <p className="text-xs text-muted-foreground mt-1">
-                These fields will use default values at runtime.
+                {t('profileEditor.missingFieldsHint')}
               </p>
             </div>
           </div>

ui/src/components/profiles/editor/use-profile-editor.ts

@@ -6,6 +6,7 @@
 import { useMemo } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { toast } from 'sonner';
+import { useTranslation } from 'react-i18next';
 import type { Settings, SettingsResponse } from './types';
 
 /** Required env vars for profiles to function (informational only - runtime fills defaults) */
@@ -34,6 +35,7 @@ export function useProfileEditor({
   onSuccess,
   onConflict,
 }: UseProfileEditorOptions) {
+  const { t } = useTranslation();
   const queryClient = useQueryClient();
 
   // Fetch settings for selected profile
@@ -132,11 +134,11 @@ export function useProfileEditor({
       onSuccess();
       // Show warning if fields missing (runtime uses defaults)
       if (data?.warning) {
-        toast.success('Settings saved', {
+        toast.success(t('commonToast.settingsSaved'), {
           description: data.warning,
         });
       } else {
-        toast.success('Settings saved');
+        toast.success(t('commonToast.settingsSaved'));
       }
     },
     onError: (error: Error) => {

ui/src/components/profiles/openrouter-badge.tsx

@@ -3,6 +3,7 @@
  * Visual indicator for OpenRouter-configured profiles
  */
 
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip';
 import { cn } from '@/lib/utils';
@@ -13,6 +14,8 @@ interface OpenRouterBadgeProps {
 }
 
 export function OpenRouterBadge({ className, showTooltip = true }: OpenRouterBadgeProps) {
+  const { t } = useTranslation();
+
   const badge = (
     <Badge
       variant="outline"
@@ -33,7 +36,7 @@ export function OpenRouterBadge({ className, showTooltip = true }: OpenRouterBad
     <Tooltip>
       <TooltipTrigger asChild>{badge}</TooltipTrigger>
       <TooltipContent>
-        <p>Access 349+ models via OpenRouter</p>
+        <p>{t('openrouterBadge.integration')}</p>
       </TooltipContent>
     </Tooltip>
   );

ui/src/components/profiles/openrouter-banner.tsx

@@ -5,6 +5,7 @@
 
 /* eslint-disable react-hooks/set-state-in-effect */
 import { useState, useEffect } from 'react';
+import { useTranslation } from 'react-i18next';
 import { X, Sparkles, ExternalLink } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { useOpenRouterReady } from '@/hooks/use-openrouter-models';
@@ -16,6 +17,7 @@ interface OpenRouterBannerProps {
 }
 
 export function OpenRouterBanner({ onCreateClick }: OpenRouterBannerProps) {
+  const { t } = useTranslation();
   const [dismissed, setDismissed] = useState(true); // Start hidden to avoid flash
   const { modelCount, isLoading } = useOpenRouterReady();
 
@@ -40,10 +42,13 @@ export function OpenRouterBanner({ onCreateClick }: OpenRouterBannerProps) {
             <Sparkles className="w-4 h-4" />
           </div>
           <div className="flex-1 min-w-0">
-            <p className="font-medium text-sm">NEW: OpenRouter Integration</p>
+            <p className="font-medium text-sm">
+              {t('openrouterBadge.new')}: {t('openrouterBadge.integration')}
+            </p>
             <p className="text-xs text-white/80 truncate">
-              Browse {isLoading ? '300+' : `${modelCount}+`} models from OpenAI, Anthropic, Google,
-              Meta and more.
+              {t('openrouterBanner.accessModels', {
+                count: isLoading ? 300 : modelCount,
+              })}
             </p>
           </div>
         </div>
@@ -56,7 +61,7 @@ export function OpenRouterBanner({ onCreateClick }: OpenRouterBannerProps) {
               onClick={onCreateClick}
               className="bg-white text-accent hover:bg-white/90 h-8"
             >
-              Try it now
+              {t('openrouterBanner.add')}
             </Button>
           )}
           <a

ui/src/components/profiles/openrouter-model-picker.tsx

@@ -4,6 +4,7 @@
  */
 
 import { useState, useMemo, useCallback } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Input } from '@/components/ui/input';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -33,9 +34,10 @@ interface OpenRouterModelPickerProps {
 export function OpenRouterModelPicker({
   value,
   onChange,
-  placeholder = 'Search models...',
+  placeholder,
   className,
 }: OpenRouterModelPickerProps) {
+  const { t } = useTranslation();
   const [search, setSearch] = useState('');
   const [selectedCategory, setSelectedCategory] = useState<ModelCategory | null>(null);
 
@@ -105,7 +107,7 @@ export function OpenRouterModelPicker({
           <Input
             value={search}
             onChange={(e) => setSearch(e.target.value)}
-            placeholder={placeholder}
+            placeholder={placeholder ?? t('openrouterModelPicker.searchModels')}
             className="pl-9"
           />
         </div>
@@ -180,7 +182,7 @@ export function OpenRouterModelPicker({
               <div>
                 <div className="text-muted-foreground bg-background sticky top-0 mb-2 flex items-center gap-1.5 py-1.5 text-xs font-semibold border-b pb-2">
                   <Sparkles className="h-3 w-3 text-accent" />
-                  <span>Newest Models</span>
+                  <span>{t('openrouterModelPicker.newestModels')}</span>
                 </div>
                 <div className="space-y-1">
                   {newestModels.map((model) => (

ui/src/components/profiles/openrouter-promo-card.tsx

@@ -3,6 +3,7 @@
  * Permanent promotional card for OpenRouter - always visible in sidebar footer
  */
 
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { useOpenRouterReady } from '@/hooks/use-openrouter-models';
 import { Zap } from 'lucide-react';
@@ -12,7 +13,8 @@ interface OpenRouterPromoCardProps {
 }
 
 export function OpenRouterPromoCard({ onCreateClick }: OpenRouterPromoCardProps) {
-  const { modelCount, isLoading } = useOpenRouterReady();
+  const { t } = useTranslation();
+  useOpenRouterReady();
 
   return (
     <div className="p-3 border-t bg-gradient-to-r from-accent/5 to-accent/10 dark:from-accent/10 dark:to-accent/15">
@@ -21,9 +23,11 @@ export function OpenRouterPromoCard({ onCreateClick }: OpenRouterPromoCardProps)
           <img src="/icons/openrouter.svg" alt="" className="w-4 h-4" />
         </div>
         <div className="flex-1 min-w-0">
-          <p className="text-xs font-medium text-accent dark:text-accent-foreground">OpenRouter</p>
+          <p className="text-xs font-medium text-accent dark:text-accent-foreground">
+            {t('openrouterPromoCard.title')}
+          </p>
           <p className="text-[10px] text-muted-foreground truncate">
-            {isLoading ? '300+' : `${modelCount}+`} models available
+            {t('openrouterPromoCard.description')}
           </p>
         </div>
         <Button
@@ -33,7 +37,7 @@ export function OpenRouterPromoCard({ onCreateClick }: OpenRouterPromoCardProps)
           className="h-7 px-2 text-accent hover:text-accent hover:bg-accent/10 dark:hover:bg-accent/20"
         >
           <Zap className="w-3 h-3 mr-1" />
-          <span className="text-xs">Add</span>
+          <span className="text-xs">{t('openrouterBanner.add')}</span>
         </Button>
       </div>
     </div>

ui/src/components/profiles/profile-card.tsx

@@ -1,3 +1,4 @@
+import { useTranslation } from 'react-i18next';
 import { Card, CardContent, CardHeader } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -23,6 +24,7 @@ interface ProfileCardProps {
 }
 
 export function ProfileCard({ profile, settings, onSwitch, onConfig, onTest }: ProfileCardProps) {
+  const { t } = useTranslation();
   const showOpenRouterIcon = isOpenRouterProfile(settings);
 
   return (
@@ -36,7 +38,7 @@ export function ProfileCard({ profile, settings, onSwitch, onConfig, onTest }: P
                 <TooltipTrigger asChild>
                   <img src="/icons/openrouter.svg" alt="OpenRouter" className="w-4 h-4" />
                 </TooltipTrigger>
-                <TooltipContent>OpenRouter profile</TooltipContent>
+                <TooltipContent>{t('profileCard.openRouter')}</TooltipContent>
               </Tooltip>
             )}
             {profile.isActive && (

ui/src/components/profiles/profile-create-dialog.tsx

@@ -230,7 +230,7 @@ export function ProfileCreateDialog({
     setValue('haikuModel', model.id);
     setModelSearch(model.name);
     // Show feedback that model was applied to all tiers
-    toast.success(`Applied "${model.name}" to all model tiers`, {
+    toast.success(t('profileCreateDialog.appliedModelToTiers', { model: model.name }), {
       duration: 2000,
     });
   };
@@ -268,11 +268,11 @@ export function ProfileCreateDialog({
     };
     try {
       await createMutation.mutateAsync(finalData);
-      toast.success(`Profile "${finalData.name}" created`);
+      toast.success(t('profileCreateDialog.profileCreated', { name: finalData.name }));
       onSuccess(finalData.name);
       onOpenChange(false);
     } catch (error) {
-      toast.error((error as Error).message || 'Failed to create profile');
+      toast.error((error as Error).message || t('profileCreateDialog.failedCreate'));
     }
   };
 
@@ -289,11 +289,9 @@ export function ProfileCreateDialog({
         <DialogHeader className="p-6 pb-4 border-b">
           <DialogTitle className="flex items-center gap-2">
             <Plus className="w-5 h-5 text-primary" />
-            Create API Profile
+            {t('profileCreateDialog.createProfile')}
           </DialogTitle>
-          <DialogDescription>
-            Choose a provider preset or configure a custom API endpoint.
-          </DialogDescription>
+          <DialogDescription>{t('profileCreateDialog.chooseProviderHint')}</DialogDescription>
         </DialogHeader>
 
         <form
@@ -361,7 +359,7 @@ export function ProfileCreateDialog({
 
               <div className="space-y-2">
                 <Label className="text-xs font-medium uppercase tracking-[0.12em] text-foreground/70">
-                  Local Runtimes
+                  {t('openrouterQuickStart.localRuntimesTitle')}
                 </Label>
                 <div className="flex flex-wrap gap-2">
                   {LOCAL_RUNTIME_PRESETS.map((preset) => (
@@ -386,13 +384,13 @@ export function ProfileCreateDialog({
             <div className="px-6 pt-4">
               <TabsList className="grid w-full grid-cols-2">
                 <TabsTrigger value="basic" className="relative">
-                  Basic Information
+                  {t('profileCreateDialog.basicInformation')}
                   {hasBasicErrors && (
                     <span className="absolute top-1 right-2 w-2 h-2 rounded-full bg-destructive animate-pulse" />
                   )}
                 </TabsTrigger>
                 <TabsTrigger value="models" className="relative">
-                  Model Configuration
+                  {t('profileCreateDialog.modelConfiguration')}
                   {hasModelErrors && (
                     <span className="absolute top-1 right-2 w-2 h-2 rounded-full bg-destructive animate-pulse" />
                   )}
@@ -405,19 +403,19 @@ export function ProfileCreateDialog({
                 {/* Profile Name */}
                 <div className="space-y-1.5">
                   <Label htmlFor="name">
-                    Profile Name <span className="text-destructive">*</span>
+                    {t('profileDialog.name')} <span className="text-destructive">*</span>
                   </Label>
                   <Input
                     id="name"
                     {...register('name')}
-                    placeholder="my-api"
+                    placeholder={t('profileDialog.namePlaceholder')}
                     className="font-mono"
                   />
                   {errors.name ? (
                     <p className="text-xs text-destructive">{errors.name.message}</p>
                   ) : (
                     <p className="text-xs text-muted-foreground">
-                      Used in CLI:{' '}
+                      {t('profileCreateDialog.usedInCli')}{' '}
                       <code className="bg-muted px-1 rounded text-[10px]">ccs my-api "prompt"</code>
                     </p>
                   )}
@@ -425,11 +423,11 @@ export function ProfileCreateDialog({
 
                 {/* Base URL - always editable, pre-filled from preset */}
                 <div className="space-y-1.5">
-                  <Label htmlFor="baseUrl">API Base URL</Label>
+                  <Label htmlFor="baseUrl">{t('profileCreateDialog.apiBaseUrl')}</Label>
                   <Input
                     id="baseUrl"
                     {...register('baseUrl')}
-                    placeholder="https://api.example.com/v1"
+                    placeholder={t('profileCreateDialog.baseUrlPlaceholder')}
                   />
                   {errors.baseUrl ? (
                     <p className="text-xs text-destructive">{errors.baseUrl.message}</p>
@@ -441,12 +439,12 @@ export function ProfileCreateDialog({
                   ) : currentPreset ? (
                     <p className="text-xs text-muted-foreground">
                       {currentPreset.baseUrl
-                        ? `Pre-filled from ${currentPreset.name}. You can customize if needed.`
-                        : `Optional for ${currentPreset.name}. Leave blank to use native Anthropic auth.`}
+                        ? t('profileCreateDialog.prefilledFromPreset', { name: currentPreset.name })
+                        : t('profileCreateDialog.optionalForPreset', { name: currentPreset.name })}
                     </p>
                   ) : (
                     <p className="text-xs text-muted-foreground">
-                      The endpoint that accepts OpenAI-compatible and Anthropic requests
+                      {t('profileCreateDialog.endpointHint')}
                     </p>
                   )}
                 </div>
@@ -454,12 +452,14 @@ export function ProfileCreateDialog({
                 {/* API Key - optional for presets that don't require it */}
                 <div className="space-y-1.5">
                   <Label htmlFor="apiKey">
-                    API Key{' '}
+                    {t('profileDialog.apiKey')}{' '}
                     {currentPreset?.requiresApiKey !== false && (
                       <span className="text-destructive">*</span>
                     )}
                     {currentPreset?.requiresApiKey === false && (
-                      <span className="text-muted-foreground text-xs font-normal">(optional)</span>
+                      <span className="text-muted-foreground text-xs font-normal">
+                        {t('profileCreateDialog.optional')}
+                      </span>
                     )}
                   </Label>
                   <div className="relative">
@@ -469,8 +469,9 @@ export function ProfileCreateDialog({
                       {...register('apiKey')}
                       placeholder={
                         currentPreset?.requiresApiKey === false
-                          ? 'Optional - only if auth is enabled'
-                          : (currentPreset?.apiKeyPlaceholder ?? 'sk-...')
+                          ? t('profileCreateDialog.apiKeyOptionalPlaceholder')
+                          : (currentPreset?.apiKeyPlaceholder ??
+                            t('profileCreateDialog.apiKeyPlaceholder'))
                       }
                       className="pr-10"
                     />
@@ -489,7 +490,7 @@ export function ProfileCreateDialog({
                     <p className="text-xs text-destructive">{errors.apiKey.message}</p>
                   ) : currentPreset?.requiresApiKey === false ? (
                     <p className="text-xs text-muted-foreground">
-                      Only needed if your local endpoint has authentication enabled
+                      {t('profileCreateDialog.apiKeyOptionalHint')}
                     </p>
                   ) : (
                     currentPreset?.apiKeyHint && (
@@ -499,7 +500,7 @@ export function ProfileCreateDialog({
                 </div>
 
                 <div className="space-y-1.5">
-                  <Label htmlFor="target">Default Target CLI</Label>
+                  <Label htmlFor="target">{t('codex.defaultTargetCli')}</Label>
                   <Select
                     value={targetValue}
                     onValueChange={(value) => setValue('target', value as CliTarget)}
@@ -508,9 +509,9 @@ export function ProfileCreateDialog({
                       <SelectValue />
                     </SelectTrigger>
                     <SelectContent>
-                      <SelectItem value="claude">Claude Code (default)</SelectItem>
-                      <SelectItem value="droid">Factory Droid</SelectItem>
-                      <SelectItem value="codex">Codex CLI</SelectItem>
+                      <SelectItem value="claude">{t('profileCard.claudeCodeDefault')}</SelectItem>
+                      <SelectItem value="droid">{t('profileCard.factoryDroid')}</SelectItem>
+                      <SelectItem value="codex">{t('profileCard.codexCli')}</SelectItem>
                     </SelectContent>
                   </Select>
                   <p className="text-xs text-muted-foreground">
@@ -553,10 +554,9 @@ export function ProfileCreateDialog({
                 <div className="flex items-start gap-3 p-3 bg-blue-50 dark:bg-blue-950/20 text-blue-800 dark:text-blue-300 rounded-md text-sm border border-blue-100 dark:border-blue-900/30">
                   <Info className="w-5 h-5 shrink-0 mt-0.5" />
                   <div>
-                    <p className="font-medium mb-1">Model Mapping</p>
+                    <p className="font-medium mb-1">{t('profileCreateDialog.modelMapping')}</p>
                     <p className="text-xs opacity-90">
-                      Map Claude Code tiers (Opus/Sonnet/Haiku) to models supported by your
-                      provider.
+                      {t('profileCreateDialog.modelMappingDesc')}
                     </p>
                   </div>
                 </div>
@@ -564,11 +564,11 @@ export function ProfileCreateDialog({
                 {/* OpenRouter Model Picker */}
                 {isOpenRouter && (
                   <div className="space-y-2">
-                    <Label>Search Models</Label>
+                    <Label>{t('openrouterModelPicker.searchModels')}</Label>
                     <Input
                       value={modelSearch}
                       onChange={(e) => setModelSearch(e.target.value)}
-                      placeholder="Type to search (e.g., opus, sonnet, gpt-4o)..."
+                      placeholder={t('profileCreateDialog.searchModelsPlaceholder')}
                       onKeyDown={(e) => {
                         if (e.key === 'Enter' && filteredModels.length > 0) {
                           e.preventDefault();
@@ -580,15 +580,15 @@ export function ProfileCreateDialog({
                       {filteredModels.length === 0 ? (
                         <p className="text-sm text-muted-foreground p-3 text-center">
                           {modelSearch
-                            ? `No models found for "${modelSearch}"`
-                            : 'Loading models...'}
+                            ? t('profileCreateDialog.noModelsFound', { query: modelSearch })
+                            : t('profileCreateDialog.loadingModels')}
                         </p>
                       ) : (
                         <div className="p-1">
                           {!modelSearch && (
                             <div className="flex items-center gap-1.5 px-2 py-1 text-xs text-muted-foreground">
                               <Sparkles className="w-3 h-3 text-accent" />
-                              <span>Newest Models</span>
+                              <span>{t('openrouterModelPicker.newestModels')}</span>
                             </div>
                           )}
                           {filteredModels.map((model) => (
@@ -609,7 +609,7 @@ export function ProfileCreateDialog({
                 <div className="space-y-3">
                   <div className="space-y-1.5">
                     <Label htmlFor="model">
-                      Default Model
+                      {t('profileCreateDialog.defaultModel')}
                       <Badge variant="outline" className="ml-2 text-[10px] font-mono">
                         ANTHROPIC_MODEL
                       </Badge>
@@ -625,7 +625,7 @@ export function ProfileCreateDialog({
                   <div className="grid gap-3 pt-2 border-t">
                     <div className="space-y-1.5">
                       <Label htmlFor="sonnetModel" className="text-sm">
-                        Sonnet Mapping
+                        {t('profileCreateDialog.sonnetMapping')}
                         <Badge variant="outline" className="ml-2 text-[10px] font-mono">
                           DEFAULT_SONNET
                         </Badge>
@@ -633,14 +633,14 @@ export function ProfileCreateDialog({
                       <Input
                         id="sonnetModel"
                         {...register('sonnetModel')}
-                        placeholder="e.g. gpt-4o, claude-sonnet-4"
+                        placeholder={t('profileCreateDialog.sonnetMappingPlaceholder')}
                         className="font-mono text-sm h-9"
                       />
                     </div>
 
                     <div className="space-y-1.5">
                       <Label htmlFor="opusModel" className="text-sm">
-                        Opus Mapping
+                        {t('profileCreateDialog.opusMapping')}
                         <Badge variant="outline" className="ml-2 text-[10px] font-mono">
                           DEFAULT_OPUS
                         </Badge>
@@ -648,14 +648,14 @@ export function ProfileCreateDialog({
                       <Input
                         id="opusModel"
                         {...register('opusModel')}
-                        placeholder="e.g. o1, claude-opus-4.5"
+                        placeholder={t('profileCreateDialog.opusMappingPlaceholder')}
                         className="font-mono text-sm h-9"
                       />
                     </div>
 
                     <div className="space-y-1.5">
                       <Label htmlFor="haikuModel" className="text-sm">
-                        Haiku Mapping
+                        {t('profileCreateDialog.haikuMapping')}
                         <Badge variant="outline" className="ml-2 text-[10px] font-mono">
                           DEFAULT_HAIKU
                         </Badge>
@@ -663,7 +663,7 @@ export function ProfileCreateDialog({
                       <Input
                         id="haikuModel"
                         {...register('haikuModel')}
-                        placeholder="e.g. gpt-4o-mini, claude-3.5-haiku"
+                        placeholder={t('profileCreateDialog.haikuMappingPlaceholder')}
                         className="font-mono text-sm h-9"
                       />
                     </div>
@@ -674,7 +674,7 @@ export function ProfileCreateDialog({
 
             <DialogFooter className="p-6 pt-4 border-t bg-muted/10">
               <Button type="button" variant="outline" onClick={() => onOpenChange(false)}>
-                Cancel
+                {t('profileDialog.cancel')}
               </Button>
               <Button
                 type="submit"
@@ -684,12 +684,12 @@ export function ProfileCreateDialog({
                 {isCreating ? (
                   <>
                     <Loader2 className="w-4 h-4 mr-2 animate-spin" />
-                    Creating...
+                    {t('cliproxyDialog.creating')}
                   </>
                 ) : (
                   <>
                     <Plus className="w-4 h-4 mr-2" />
-                    Create Profile
+                    {t('profileCreateDialog.createProfile')}
                   </>
                 )}
               </Button>
@@ -803,6 +803,7 @@ function ModelSearchItem({
   onClick: () => void;
   showAge?: boolean;
 }) {
+  const { t } = useTranslation();
   return (
     <button
       type="button"
@@ -824,7 +825,7 @@ function ModelSearchItem({
             variant="secondary"
             className="text-xs group-hover:bg-accent-foreground/20 group-hover:text-accent-foreground"
           >
-            Free
+            {t('profileCreateDialog.free')}
           </Badge>
         ) : (
           <span>{formatPricingPair(model.pricing)}</span>

ui/src/components/profiles/profile-deck.tsx

@@ -1,8 +1,10 @@
 import { useProfiles } from '@/hooks/use-profiles';
 import { ProfileCard } from './profile-card';
 import { Skeleton } from '@/components/ui/skeleton';
+import { useTranslation } from 'react-i18next';
 
 export function ProfileDeck() {
+  const { t } = useTranslation();
   const { data: response, isLoading, error } = useProfiles();
 
   if (isLoading) {
@@ -18,7 +20,11 @@ export function ProfileDeck() {
   }
 
   if (error) {
-    return <div className="text-destructive text-sm">Failed to load profiles: {error.message}</div>;
+    return (
+      <div className="text-destructive text-sm">
+        {t('apiProfiles.failedLoadTitle')}: {error.message}
+      </div>
+    );
   }
 
   const profiles = response?.profiles || [];
@@ -26,7 +32,7 @@ export function ProfileDeck() {
   if (!profiles || profiles.length === 0) {
     return (
       <div className="text-muted-foreground text-center py-8">
-        No profiles configured. Create your first profile to get started.
+        {t('apiProfiles.noProfilesDesc')}
       </div>
     );
   }
@@ -39,7 +45,7 @@ export function ProfileDeck() {
 
   return (
     <div className="space-y-4">
-      <h2 className="text-lg font-semibold">Profiles</h2>
+      <h2 className="text-lg font-semibold">{t('profileDeck.profiles')}</h2>
       <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
         {normalizedProfiles.map((profile) => (
           <ProfileCard

ui/src/components/profiles/profile-dialog.tsx

@@ -19,6 +19,7 @@ import { ChevronDown, ChevronRight } from 'lucide-react';
 import { useTranslation } from 'react-i18next';
 
 const DEFAULT_MODEL = 'claude-sonnet-4-6';
+// TODO i18n: missing keys for Zod validation messages ("Invalid URL", "Name is required", "Invalid profile name", "API key must be at least 10 characters")
 const optionalUrlSchema = z
   .string()
   .refine((value) => value.trim().length === 0 || z.string().url().safeParse(value).success, {

ui/src/components/profiles/profiles-table.tsx

@@ -23,6 +23,7 @@ import {
 import { MoreHorizontal, Trash2, Edit } from 'lucide-react';
 import { useDeleteProfile } from '@/hooks/use-profiles';
 import type { Profile } from '@/lib/api-client';
+import { useTranslation } from 'react-i18next';
 
 interface ProfilesTableProps {
   data: Profile[];
@@ -31,20 +32,21 @@ interface ProfilesTableProps {
 
 export function ProfilesTable({ data, onEditSettings }: ProfilesTableProps) {
   const deleteMutation = useDeleteProfile();
+  const { t } = useTranslation();
 
   const columns: ColumnDef<Profile>[] = [
     {
       accessorKey: 'name',
-      header: 'Name',
+      header: t('profilesTable.name'),
       size: 200,
     },
     {
       accessorKey: 'settingsPath',
-      header: 'Settings Path',
+      header: t('profileEditor.filePath'),
     },
     {
       accessorKey: 'configured',
-      header: 'Status',
+      header: t('cliproxyTable.status'),
       size: 100,
       cell: ({ row }) => (
         <span className={row.original.configured ? 'text-green-600' : 'text-yellow-600'}>
@@ -54,7 +56,7 @@ export function ProfilesTable({ data, onEditSettings }: ProfilesTableProps) {
     },
     {
       id: 'actions',
-      header: 'Actions',
+      header: t('profilesTable.actions'),
       size: 100,
       cell: ({ row }) => (
         <DropdownMenu>
@@ -67,7 +69,7 @@ export function ProfilesTable({ data, onEditSettings }: ProfilesTableProps) {
             {onEditSettings && (
               <DropdownMenuItem onClick={() => onEditSettings(row.original)}>
                 <Edit className="w-4 h-4 mr-2" />
-                Edit
+                {t('profilesTable.edit')}
               </DropdownMenuItem>
             )}
             <DropdownMenuSeparator />
@@ -76,7 +78,7 @@ export function ProfilesTable({ data, onEditSettings }: ProfilesTableProps) {
               onClick={() => deleteMutation.mutate(row.original.name)}
             >
               <Trash2 className="w-4 h-4 mr-2" />
-              Delete
+              {t('apiProfiles.delete')}
             </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
@@ -93,9 +95,7 @@ export function ProfilesTable({ data, onEditSettings }: ProfilesTableProps) {
 
   if (data.length === 0) {
     return (
-      <div className="text-center py-8 text-muted-foreground">
-        No profiles found. Create one to get started.
-      </div>
+      <div className="text-center py-8 text-muted-foreground">{t('apiProfiles.noProfilesYet')}</div>
     );
   }
 

ui/src/components/setup/wizard/index.tsx

@@ -192,14 +192,14 @@ export function QuickSetupWizard({ open, onClose }: QuickSetupWizardProps) {
         <DialogHeader>
           <DialogTitle className="flex items-center gap-2">
             <Sparkles className="w-5 h-5 text-primary" />
-            Quick Setup Wizard
+            {i18n.t('setupWizard.title')}
           </DialogTitle>
           <DialogDescription>
-            {step === 'provider' && 'Select a provider to get started'}
-            {step === 'auth' && 'Authenticate with your provider'}
-            {step === 'account' && 'Select which account to use'}
-            {step === 'variant' && 'Create your custom variant'}
-            {step === 'success' && 'Setup complete!'}
+            {step === 'provider' && i18n.t('setupWizard.stepProviderDesc')}
+            {step === 'auth' && i18n.t('setupWizard.stepAuthDesc')}
+            {step === 'account' && i18n.t('setupWizard.stepAccountDesc')}
+            {step === 'variant' && i18n.t('setupWizard.stepVariantDesc')}
+            {step === 'success' && i18n.t('setupWizard.stepSuccessDesc')}
           </DialogDescription>
         </DialogHeader>
 

ui/src/components/setup/wizard/steps/account-step.tsx

@@ -9,6 +9,7 @@ import { getAccountIdentityPresentation } from '@/lib/account-identity';
 import { cn } from '@/lib/utils';
 import { PRIVACY_BLUR_CLASS } from '@/contexts/privacy-context';
 import type { AccountStepProps } from '../types';
+import { useTranslation } from 'react-i18next';
 
 export function AccountStep({
   accounts,
@@ -17,11 +18,12 @@ export function AccountStep({
   onAddNew,
   onBack,
 }: AccountStepProps) {
+  const { t } = useTranslation();
   return (
     <div className="space-y-4">
       {/* Existing accounts header */}
       <div className="text-xs font-medium text-muted-foreground uppercase tracking-wide">
-        Select an account ({accounts.length})
+        {t('setupWizard.accountStep.selectAccount', { count: accounts.length })}
       </div>
 
       {/* Scrollable account list with max-height for many accounts */}
@@ -63,7 +65,9 @@ export function AccountStep({
                       </Badge>
                     )}
                     {acc.isDefault && (
-                      <span className="text-xs text-muted-foreground">Default account</span>
+                      <span className="text-xs text-muted-foreground">
+                        {t('setupWizard.accountStep.defaultAccount')}
+                      </span>
                     )}
                   </div>
                 </div>
@@ -80,7 +84,9 @@ export function AccountStep({
           <span className="w-full border-t" />
         </div>
         <div className="relative flex justify-center text-xs uppercase">
-          <span className="bg-background px-2 text-muted-foreground">Or</span>
+          <span className="bg-background px-2 text-muted-foreground">
+            {t('setupWizard.accountStep.or')}
+          </span>
         </div>
       </div>
 
@@ -94,15 +100,19 @@ export function AccountStep({
           <ExternalLink className="w-4 h-4 text-primary" />
         </div>
         <div>
-          <div className="font-medium text-primary">Add new account</div>
-          <div className="text-xs text-muted-foreground">Authenticate with a different account</div>
+          <div className="font-medium text-primary">
+            {t('setupWizard.accountStep.addNewAccount')}
+          </div>
+          <div className="text-xs text-muted-foreground">
+            {t('setupWizard.accountStep.addNewAccountDesc')}
+          </div>
         </div>
       </button>
 
       <div className="flex items-center justify-between pt-2">
         <Button variant="ghost" onClick={onBack}>
           <ArrowLeft className="w-4 h-4 mr-2" />
-          Back
+          {t('setupWizard.accountStep.back')}
         </Button>
       </div>
     </div>

ui/src/components/setup/wizard/steps/auth-step.tsx

@@ -7,6 +7,7 @@ import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { Copy, Check, RefreshCw, ArrowLeft, Terminal, ExternalLink, Loader2 } from 'lucide-react';
 import type { AuthStepProps } from '../types';
+import { useTranslation } from 'react-i18next';
 
 export function AuthStep({
   selectedProvider,
@@ -18,6 +19,7 @@ export function AuthStep({
   onStartAuth,
   onRefresh,
 }: AuthStepProps) {
+  const { t } = useTranslation();
   const [copied, setCopied] = useState(false);
 
   const copyCommand = async (cmd: string) => {
@@ -31,26 +33,25 @@ export function AuthStep({
       {/* Primary: OAuth Button */}
       <div className="text-center space-y-3">
         <p className="text-sm text-muted-foreground">
-          Authenticate with {providers.find((p) => p.id === selectedProvider)?.name} to add an
-          account
+          {t('setupWizard.authStep.authenticateWith', {
+            provider: providers.find((p) => p.id === selectedProvider)?.name,
+          })}
         </p>
         <Button onClick={onStartAuth} disabled={isPending} className="w-full gap-2" size="lg">
           {isPending ? (
             <>
               <Loader2 className="w-4 h-4 animate-spin" />
-              Authenticating...
+              {t('setupWizard.authStep.authenticating')}
             </>
           ) : (
             <>
               <ExternalLink className="w-4 h-4" />
-              Authenticate in Browser
+              {t('setupWizard.authStep.authenticateInBrowser')}
             </>
           )}
         </Button>
         {isPending && (
-          <p className="text-xs text-muted-foreground">
-            Complete the OAuth flow in your browser...
-          </p>
+          <p className="text-xs text-muted-foreground">{t('setupWizard.authStep.completeOAuth')}</p>
         )}
       </div>
 
@@ -60,7 +61,9 @@ export function AuthStep({
           <span className="w-full border-t" />
         </div>
         <div className="relative flex justify-center text-xs uppercase">
-          <span className="bg-background px-2 text-muted-foreground">Or use terminal</span>
+          <span className="bg-background px-2 text-muted-foreground">
+            {t('setupWizard.authStep.orUseTerminal')}
+          </span>
         </div>
       </div>
 
@@ -69,7 +72,7 @@ export function AuthStep({
         <CardContent className="p-4 space-y-3">
           <div className="flex items-center gap-2 text-sm text-muted-foreground">
             <Terminal className="w-4 h-4" />
-            Run this command in your terminal:
+            {t('setupWizard.authStep.runCommandHint')}
           </div>
           <div className="flex items-center gap-2">
             <code className="flex-1 px-3 py-2 bg-muted rounded-md font-mono text-sm">
@@ -85,11 +88,13 @@ export function AuthStep({
       <div className="flex items-center justify-between">
         <Button variant="ghost" onClick={onBack} disabled={isPending}>
           <ArrowLeft className="w-4 h-4 mr-2" />
-          Back
+          {t('setupWizard.authStep.back')}
         </Button>
         <Button variant="outline" onClick={onRefresh} disabled={isRefreshing || isPending}>
           <RefreshCw className={`w-4 h-4 mr-2 ${isRefreshing ? 'animate-spin' : ''}`} />
-          {isRefreshing ? 'Checking...' : 'Refresh Status'}
+          {isRefreshing
+            ? t('setupWizard.authStep.checking')
+            : t('setupWizard.authStep.refreshStatus')}
         </Button>
       </div>
     </div>

ui/src/components/setup/wizard/steps/success-step.tsx

@@ -6,8 +6,10 @@ import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { Check } from 'lucide-react';
 import type { SuccessStepProps } from '../types';
+import { useTranslation } from 'react-i18next';
 
 export function SuccessStep({ variantName, onClose }: SuccessStepProps) {
+  const { t } = useTranslation();
   return (
     <div className="space-y-4 text-center">
       <div className="flex justify-center">
@@ -16,19 +18,19 @@ export function SuccessStep({ variantName, onClose }: SuccessStepProps) {
         </div>
       </div>
       <div>
-        <div className="font-semibold text-lg">Variant Created!</div>
-        <div className="text-sm text-muted-foreground">Your custom variant is ready to use</div>
+        <div className="font-semibold text-lg">{t('setupWizard.successStep.title')}</div>
+        <div className="text-sm text-muted-foreground">{t('setupWizard.successStep.subtitle')}</div>
       </div>
       <Card>
         <CardContent className="p-4 space-y-2">
-          <div className="text-sm text-muted-foreground">Usage:</div>
+          <div className="text-sm text-muted-foreground">{t('setupWizard.successStep.usage')}</div>
           <code className="block px-3 py-2 bg-muted rounded-md font-mono text-sm">
             ccs {variantName} "your prompt here"
           </code>
         </CardContent>
       </Card>
       <Button onClick={onClose} className="w-full">
-        Done
+        {t('setupWizard.successStep.done')}
       </Button>
     </div>
   );

ui/src/components/setup/wizard/steps/variant-step.tsx

@@ -127,9 +127,7 @@ export function VariantStep({
               placeholder={t('setupVariant.modelPlaceholder')}
             />
             {deniedCustomModel && (
-              <p className="text-xs text-destructive">
-                Antigravity denylist: Claude Opus 4.5 and Claude Sonnet 4.5 are deprecated.
-              </p>
+              <p className="text-xs text-destructive">{t('providerEditor.agyDenylist')}</p>
             )}
             <button
               type="button"

ui/src/components/shared/ccs-logo.tsx

@@ -1,4 +1,5 @@
 import { cn } from '@/lib/utils';
+import { useTranslation } from 'react-i18next';
 
 interface CcsLogoProps {
   size?: 'sm' | 'md' | 'lg';
@@ -13,18 +14,19 @@ const sizeMap = {
 };
 
 export function CcsLogo({ size = 'md', className, showText = true }: CcsLogoProps) {
+  const { t } = useTranslation();
   const dimension = sizeMap[size];
 
   return (
     <div className={cn('flex items-center gap-2', className)}>
       <img
         src="/logo/ccs-logo-256.png"
-        alt="CCS Logo"
+        alt={t('ccsLogo.alt')}
         width={dimension}
         height={dimension}
         className="rounded"
       />
-      {showText && <span className="font-bold text-lg">CCS Config</span>}
+      {showText && <span className="font-bold text-lg">{t('ccsLogo.text')}</span>}
     </div>
   );
 }