Fix runtime default locale resolution

components/admin/portfolio-projects-overview.tsx

@@ -9,6 +9,7 @@ import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { CardContent } from "@/components/ui/card";
 import { getAdminAppPath } from "@/lib/admin-routing";
+import { getSiteSettings } from "@/lib/app-config";
 import { getLocalizedPath } from "@/lib/locale";
 import { getLocalizedValue, type PortfolioCategoryView, type PortfolioProjectView } from "@/lib/portfolio";
 
@@ -28,11 +29,13 @@ const copy = {
   empty: "Noch keine Projekte vorhanden.",
 };
 
-export function PortfolioProjectsOverview({
+export async function PortfolioProjectsOverview({
   categories,
   projects,
   selectedCategory,
 }: PortfolioProjectsOverviewProps) {
+  const siteSettings = await getSiteSettings();
+
   return (
     <div className="space-y-6">
       <div className="flex flex-col gap-4 xl:flex-row xl:items-end xl:justify-between">
@@ -102,7 +105,7 @@ export function PortfolioProjectsOverview({
                 <div className="flex flex-wrap gap-3">
                   <Button asChild variant="outline">
                     <Link
-                      href={getLocalizedPath("de", `/portfolio/${project.slug}`)}
+                      href={getLocalizedPath("de", `/portfolio/${project.slug}`, siteSettings.defaultLocale)}
                       target="_blank"
                       rel="noreferrer"
                     >

components/layout/locale-toggle.tsx

@@ -17,7 +17,7 @@ const PENDING_TOAST_STORAGE_KEY = "mohfarawati-pending-toast";
 
 type LocaleToggleProps = {
   locale: string;
-  defaultLocale?: AppLocale;
+  defaultLocale: AppLocale;
   className?: string;
   showLabel?: boolean;
 };
@@ -30,7 +30,7 @@ const localeChangedMessages: Record<AppLocale, string> = {
 
 export function LocaleToggle({
   locale,
-  defaultLocale = "de",
+  defaultLocale,
   className,
   showLabel = false,
 }: LocaleToggleProps) {

components/site/portfolio-category-filter.tsx

@@ -7,6 +7,7 @@ import { cn } from "@/lib/utils";
 
 type PortfolioCategoryFilterProps = {
   locale: AppLocale;
+  defaultLocale: AppLocale;
   categories: PortfolioCategoryView[];
   allLabel: string;
   activeCategorySlug?: string;
@@ -14,6 +15,7 @@ type PortfolioCategoryFilterProps = {
 
 export function PortfolioCategoryFilter({
   locale,
+  defaultLocale,
   categories,
   allLabel,
   activeCategorySlug,
@@ -21,14 +23,14 @@ export function PortfolioCategoryFilter({
   return (
     <section className="flex flex-wrap gap-3">
       <CategoryLink
-        href={getLocalizedPath(locale, "/portfolio")}
+        href={getLocalizedPath(locale, "/portfolio", defaultLocale)}
         label={allLabel}
         active={!activeCategorySlug}
       />
       {categories.map((category) => (
         <CategoryLink
           key={category.id}
-          href={getLocalizedPath(locale, `/portfolio/category/${category.slug}`)}
+          href={getLocalizedPath(locale, `/portfolio/category/${category.slug}`, defaultLocale)}
           label={getLocalizedValue(category.name, locale)}
           active={activeCategorySlug === category.slug}
         />

components/site/portfolio-project-detail.tsx

@@ -24,6 +24,7 @@ import {
 type PortfolioProjectDetailProps = {
   item: PortfolioProjectView;
   locale: AppLocale;
+  defaultLocale: AppLocale;
   t: (key: "back" | "preview" | "openLink" | "gallery" | "download") => string;
 };
 
@@ -223,10 +224,12 @@ function BadgeCount({ count }: { count: number }) {
 function ProjectHeader({
   item,
   locale,
+  defaultLocale,
   t,
 }: {
   item: PortfolioProjectView;
   locale: AppLocale;
+  defaultLocale: AppLocale;
   t: PortfolioProjectDetailProps["t"];
 }) {
   return (
@@ -234,7 +237,7 @@ function ProjectHeader({
       <AppCard level={3}>
         <CardContent className="p-6 lg:p-10">
           <Button asChild variant="ghost" className="h-auto px-0 py-0 text-sm">
-            <Link href={getLocalizedPath(locale, "/portfolio")}>{t("back")}</Link>
+            <Link href={getLocalizedPath(locale, "/portfolio", defaultLocale)}>{t("back")}</Link>
           </Button>
 
           <h1 className="mt-5 text-3xl font-semibold text-foreground sm:text-4xl lg:text-5xl">
@@ -267,11 +270,12 @@ function ProjectHeader({
 function GridTemplate({
   item,
   locale,
+  defaultLocale,
   t,
 }: PortfolioProjectDetailProps) {
   return (
     <div className="space-y-6">
-      <ProjectHeader item={item} locale={locale} t={t} />
+      <ProjectHeader item={item} locale={locale} defaultLocale={defaultLocale} t={t} />
 
       {item.coverImagePath ? (
         <MotionFade delay={0.04}>
@@ -309,11 +313,12 @@ function GridTemplate({
 function StoryTemplate({
   item,
   locale,
+  defaultLocale,
   t,
 }: PortfolioProjectDetailProps) {
   return (
     <div className="space-y-8">
-      <ProjectHeader item={item} locale={locale} t={t} />
+      <ProjectHeader item={item} locale={locale} defaultLocale={defaultLocale} t={t} />
 
       {item.coverImagePath ? (
         <MotionFade delay={0.04}>
@@ -356,6 +361,7 @@ function StoryTemplate({
 function CaseStudyTemplate({
   item,
   locale,
+  defaultLocale,
   t,
 }: PortfolioProjectDetailProps) {
   const [challenge, solution, outcome, ...restSections] = item.sections;
@@ -365,7 +371,7 @@ function CaseStudyTemplate({
 
   return (
     <div className="space-y-8">
-      <ProjectHeader item={item} locale={locale} t={t} />
+      <ProjectHeader item={item} locale={locale} defaultLocale={defaultLocale} t={t} />
 
       <div className="grid gap-6 xl:grid-cols-[minmax(0,1.2fr)_420px]">
         <div className="space-y-6">
@@ -441,17 +447,18 @@ function CaseStudyTemplate({
 export function PortfolioProjectDetail({
   item,
   locale,
+  defaultLocale,
   t,
 }: PortfolioProjectDetailProps) {
   const viewMode = resolvePortfolioProjectViewMode(item.viewMode);
 
   if (viewMode === "STORY") {
-    return <StoryTemplate item={item} locale={locale} t={t} />;
+    return <StoryTemplate item={item} locale={locale} defaultLocale={defaultLocale} t={t} />;
   }
 
   if (viewMode === "CASE_STUDY") {
-    return <CaseStudyTemplate item={item} locale={locale} t={t} />;
+    return <CaseStudyTemplate item={item} locale={locale} defaultLocale={defaultLocale} t={t} />;
   }
 
-  return <GridTemplate item={item} locale={locale} t={t} />;
+  return <GridTemplate item={item} locale={locale} defaultLocale={defaultLocale} t={t} />;
 }

components/site/portfolio-project-grid.tsx

@@ -9,6 +9,7 @@ import { getLocalizedValue, type PortfolioProjectView } from "@/lib/portfolio";
 
 type PortfolioProjectGridProps = {
   locale: AppLocale;
+  defaultLocale: AppLocale;
   projects: PortfolioProjectView[];
   emptyLabel: string;
   openLabel: string;
@@ -16,6 +17,7 @@ type PortfolioProjectGridProps = {
 
 export function PortfolioProjectGrid({
   locale,
+  defaultLocale,
   projects,
   emptyLabel,
   openLabel,
@@ -27,7 +29,7 @@ export function PortfolioProjectGrid({
           <AppCard interactive>
             <CardContent className="p-5">
               <Link
-                href={getLocalizedPath(locale, `/portfolio/${item.slug}`)}
+                href={getLocalizedPath(locale, `/portfolio/${item.slug}`, defaultLocale)}
                 className="group block"
               >
                 <div className="flex items-center justify-between gap-3">