refactor(i18n): remove legacy locale endpoint and select component

app/api/i18n/locale/route.ts

@@ -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 },
-    );
-  }
-}