feat: add dnsmasq DNS record admin UI

- store records in SQLite via built-in node:sqlite, no native deps
- wrap DB reads in await io() so they stay out of the static shell
- add CRUD pages backed by Server Actions with per-request data
- generate managed config and restart container via Docker socket
- add /resolve page to query dnsmasq for A and CNAME records
- add Dockerfile and compose setup with shared config volume

app/records/new/page.tsx

@@ -0,0 +1,22 @@
+import Link from "next/link"
+import { RecordForm } from "../_components/RecordForm"
+import { createRecordAction } from "../actions"
+
+export const metadata = { title: "新增记录" }
+
+export default function NewRecordPage() {
+  return (
+    <section className="space-y-6">
+      <header className="space-y-1">
+        <Link
+          href="/records"
+          className="text-sm text-zinc-500 transition-opacity hover:opacity-70 dark:text-zinc-400">
+          ← 返回列表
+        </Link>
+        <h1 className="text-xl font-semibold text-zinc-900 dark:text-zinc-100">新增记录</h1>
+      </header>
+
+      <RecordForm action={createRecordAction} submitLabel="创建记录" cancelHref="/records" />
+    </section>
+  )
+}