Adding info re: OAuth clients to Connect docs

Author: dannyroosevelt

docs-v2/pages/connect/_meta.json

@@ -17,6 +17,9 @@
   "environments": {
     "title": "Environments"
   },
+  "oauth-clients": {
+    "title": "OAuth Clients"
+  },
   "webhooks": {
     "title": "Webhooks"
   },

docs-v2/pages/connect/oauth-clients.mdx

@@ -0,0 +1,18 @@
+import Image from 'next/image'
+
+# OAuth Clients
+
+When connecting an account for any OAuth app via Pipedream Connect, we'll default to using Pipedream's official OAuth client, which enables you to quick get up and running. [Read more about OAuth clients in Pipedream here](/connected-accounts/oauth-clients).
+
+## Using a custom OAuth client
+1. Follow the steps outlined [here](/connected-accounts/oauth-clients#configuring-custom-oauth-clients) to create an OAuth client in Pipedream.
+2. Open the **Apps** tab within your Pipedream project and select **Add app**.
+3. Select the app you're looking for, then select the OAuth client from the dropdown menu 
+4. When connecting an account either via the [frontend SDK](/connect/quickstart#use-the-pipedream-sdk-in-your-frontend) or using [Connect Link](/connect/quickstart#use-connect-link), make sure to include the `oauth_app_id` in the request.
+
+## Finding your OAuth app ID
+[Create your OAuth client in Pipedream](https://pipedream.com/@/accounts/oauth-clients) then click the arrow to the left of the client name to expand the details.
+
+<Image src="https://res.cloudinary.com/pipedreamin/image/upload/v1730241292/oauth-app-id_umhhqi.png" alt="Copy OAuth App ID" width={650} height={529} />
+
+## Using Pipedream OAuth clients

docs-v2/pages/connect/quickstart.mdx

@@ -139,7 +139,8 @@ export default function Home() {
   const pd = createClient()
   function connectAccount() {
     pd.connectAccount({
-      app: process.env.NEXT_PUBLIC_PIPEDREAM_APP_SLUG, // From the Next.js example — adjust to pass your own app name slug
+      app: appSlug, // Pass the app name slug of the app you want to integrate
+      oauthAppId: appId, // For OAuth apps, pass the OAuth app ID; omit this param to use Pipedream's OAuth client or for key-based apps
       token: "YOUR_TOKEN", // The token you received from your server above
       onSuccess: ({ id: accountId }) => {
         console.log(`Account successfully connected: ${accountId}`)
@@ -168,7 +169,7 @@ The Connect Link opens a Pipedream-hosted page, guiding users through the accoun
 3. Before returning the URL to your user, add an `app` parameter to the end of the query string:
 
 ```
-https://pipedream.com/_static/connect.html?token={token}&connectLink=true&app={appSlug}
+https://pipedream.com/_static/connect.html?token={token}&connectLink=true&app={appSlug}&oauthAppId={oauthAppId}
 ```
 
 4. Redirect your users to this URL, or send it to them via email, SMS, and more.