diff --git a/app/api/i18n/locale/route.ts b/app/api/i18n/locale/route.ts
deleted file mode 100644
index 6125f5f..0000000
--- a/app/api/i18n/locale/route.ts
+++ /dev/null
@@ -1,53 +0,0 @@
-import { cookies } from "next/headers";
-import { NextResponse } from "next/server";
-import { getSqliteConnection } from "@/server/db/client";
-import { instanceLocales } from "@/server/db/schema";
-import { DomainError } from "@/server/domain/errors";
-import { buildLocaleCookie, normalizeLocaleCode } from "@/server/i18n/locale";
-import { eq } from "drizzle-orm";
-
-export const runtime = "nodejs";
-export const dynamic = "force-dynamic";
-
-export async function POST(request: Request) {
-  try {
-    const payload = await request.json();
-    const locale = normalizeLocaleCode(typeof payload.locale === "string" ? payload.locale : null);
-    if (!locale) {
-      throw new DomainError("VALIDATION_ERROR", "validation.invalidLocale", {
-        messageKey: "validation.invalidLocale",
-      });
-    }
-
-    const row = getSqliteConnection().db
-      .select({ code: instanceLocales.code, status: instanceLocales.status })
-      .from(instanceLocales)
-      .where(eq(instanceLocales.code, locale))
-      .get();
-    if (!row || row.status === "archived") {
-      throw new DomainError("UNSUPPORTED_LOCALE", "validation.unsupportedLocale", {
-        messageKey: "validation.unsupportedLocale",
-      });
-    }
-
-    (await cookies()).set(buildLocaleCookie(row.code));
-    return NextResponse.json({ ok: true, data: { locale: row.code } });
-  } catch (error) {
-    const normalized = error instanceof DomainError
-      ? error
-      : new DomainError("VALIDATION_ERROR", "validation.unsupportedLocale", {
-        messageKey: "validation.unsupportedLocale",
-      });
-    return NextResponse.json(
-      {
-        ok: false,
-        error: {
-          code: normalized.code,
-          message: normalized.message,
-          messageKey: normalized.details?.messageKey,
-        },
-      },
-      { status: normalized.status },
-    );
-  }
-}
diff --git a/components/i18n/locale-select-form.tsx b/components/i18n/locale-select-form.tsx
deleted file mode 100644
index 887b119..0000000
--- a/components/i18n/locale-select-form.tsx
+++ /dev/null
@@ -1,58 +0,0 @@
-"use client";
-
-import { useState, useTransition } from "react";
-import { Label } from "poyraz-ui/atoms";
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from "poyraz-ui/molecules";
-
-type LocaleOption = {
-  code: string;
-  nativeName: string;
-  name: string;
-};
-
-type LocaleSelectFormProps = {
-  label: string;
-  value: string;
-  locales: LocaleOption[];
-};
-
-export function LocaleSelectForm({ label, value, locales }: LocaleSelectFormProps) {
-  const [currentLocale, setCurrentLocale] = useState(value);
-  const [pending, startTransition] = useTransition();
-
-  function handleChange(locale: string) {
-    setCurrentLocale(locale);
-    startTransition(async () => {
-      await fetch("/api/i18n/locale", {
-        method: "POST",
-        headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ locale }),
-      });
-      window.location.reload();
-    });
-  }
-
-  return (
-    <div className="space-y-2">
-      <Label htmlFor="auth-locale">{label}</Label>
-      <Select value={currentLocale} onValueChange={handleChange} disabled={pending}>
-        <SelectTrigger id="auth-locale" aria-label={label}>
-          <SelectValue />
-        </SelectTrigger>
-        <SelectContent>
-          {locales.map((locale) => (
-            <SelectItem key={locale.code} value={locale.code}>
-              {locale.nativeName || locale.name}
-            </SelectItem>
-          ))}
-        </SelectContent>
-      </Select>
-    </div>
-  );
-}