feat: automatically open the oauth URL

src/discord/guildCount.ts

@@ -19,6 +19,7 @@ import crypto from "node:crypto";
 import http from "node:http";
 import process from "node:process";
 import { confirm } from "@inquirer/prompts";
+import open from "open";
 
 interface Guild {
   name?:        string;
@@ -348,13 +349,22 @@ async function startOAuthFlow(): Promise<string> {
   authUrl.searchParams.set("code_challenge_method", "S256");
 
   console.log("\n====== Discord OAuth ======");
-  console.log("1. Open the following URL in your browser:");
+  console.log(
+    `1. Open the following URL in your browser (we will try to automatically open it for you):`,
+  );
   console.log(authUrl.toString());
   console.log("2. Approve access for your application.");
   console.log(
     "3. Return here; the script will continue once approval is complete.\n",
   );
 
+  void open(authUrl.toString(), { wait: false }).catch(() => {
+    console.log(
+      "Failed to open browser. Please open the following URL in your browser:",
+    );
+    console.log(authUrl.toString());
+  });
+
   const code = await waitForOAuthCode(redirectUri, state);
   const tokenRequest: TokenExchangeOptions = {
     clientId,