feat: rebrand to Domain Scanner platform

Replace GeoExport static site with Next.js domain intelligence app:
real DNS/WHOIS/SSL/HTTP/geo scans, SSE progress, Docker stack,
updated install/uninstall scripts, and full documentation.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/api/monitors/route.ts

@@ -0,0 +1,51 @@
+import { NextRequest, NextResponse } from "next/server";
+import { z } from "zod";
+import { auth } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { normalizeDomain, isValidDomain } from "@/lib/utils";
+
+const bodySchema = z.object({
+  domain: z.string(),
+  type: z.enum(["DNS", "SSL", "UPTIME"]),
+});
+
+export async function GET() {
+  const session = await auth();
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+  const monitors = await prisma.monitor.findMany({
+    where: { userId: session.user.id },
+    orderBy: { createdAt: "desc" },
+  });
+  return NextResponse.json({ monitors });
+}
+
+export async function POST(req: NextRequest) {
+  const session = await auth();
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+
+  let body: z.infer<typeof bodySchema>;
+  try {
+    body = bodySchema.parse(await req.json());
+  } catch {
+    return NextResponse.json({ error: "Invalid body" }, { status: 400 });
+  }
+
+  const domain = normalizeDomain(body.domain);
+  if (!isValidDomain(domain)) {
+    return NextResponse.json({ error: "Invalid domain" }, { status: 400 });
+  }
+
+  const monitor = await prisma.monitor.create({
+    data: {
+      domain,
+      type: body.type,
+      userId: session.user.id,
+    },
+  });
+
+  return NextResponse.json({ monitor }, { status: 201 });
+}