feat: establish NekoNest Cloud control and relay

app/api/internal/relay/authorize-phone/route.ts

@@ -0,0 +1,25 @@
+import {
+  authenticateRelayNode,
+  authorizePhoneRoute,
+} from "@/db/relay-control-plane";
+import { apiError, readJsonMutation } from "../../../respond";
+
+export async function POST(request: Request) {
+  try {
+    const principal = await authenticateRelayNode(request);
+    const payload = await readJsonMutation<{
+      route_handle?: string;
+      phone_token_hash?: string;
+    }>(request);
+    return Response.json(
+      await authorizePhoneRoute({
+        principal,
+        routeHandle: payload.route_handle ?? "",
+        phoneTokenHash: payload.phone_token_hash ?? "",
+      }),
+      { headers: { "cache-control": "no-store" } },
+    );
+  } catch (error) {
+    return apiError(error);
+  }
+}