fix: Resolve issue with email domain environment variable not working

app/api/emails/domains/route.ts

@@ -0,0 +1,25 @@
+import { EMAIL_CONFIG } from "@/config"
+import { NextResponse } from "next/server"
+
+export const runtime = "edge"
+
+export async function GET() {
+  try {
+    const domains = EMAIL_CONFIG.DOMAINS
+
+    if (domains.length === 0) {
+      return NextResponse.json(
+        { error: "无效的域名列表" },
+        { status: 400 }
+      )
+    }
+
+    return NextResponse.json({ domains })
+  } catch (error) {
+    console.error('Failed to fetch domains:', error)
+    return NextResponse.json(
+      { error: "获取域名列表失败" },
+      { status: 500 }
+    )
+  }
+}