docs: add copyable S3 CORS configuration

Co-Authored-By: Oz <oz-agent@warp.dev>

Author: warp-agent-staging[bot]

src/content/docs/platform/data-storage.mdx

@@ -50,7 +50,20 @@ transiting Warp's backend.
 
 Create the bucket that will hold your agent data. Warp writes objects using your bucket's own encryption settings — both SSE-S3 (the default) and SSE-KMS are supported.
 
-Configure the bucket's Cross-Origin Resource Sharing (CORS) settings to allow `GET` requests from `https://*.warp.dev`. If you prefer to list origins explicitly, allow `GET` requests from `https://app.warp.dev`, `https://platform.warp.dev`, and `https://oz.warp.dev` instead. The Warp web interfaces need this access to load artifacts and conversation transcripts. See AWS's guide to [using CORS with Amazon S3](https://docs.aws.amazon.com/AmazonS3/latest/userguide/cors.html).
+Configure the bucket's Cross-Origin Resource Sharing (CORS) settings to allow `GET` requests from `https://*.warp.dev`. The Warp web interfaces need this access to load artifacts and conversation transcripts.
+
+```json title="S3 CORS configuration"
+[
+  {
+    "AllowedHeaders": [],
+    "AllowedMethods": ["GET"],
+    "AllowedOrigins": ["https://*.warp.dev"],
+    "ExposeHeaders": []
+  }
+]
+```
+
+If you prefer to list origins explicitly, replace `AllowedOrigins` with `["https://app.warp.dev", "https://platform.warp.dev", "https://oz.warp.dev"]`. See AWS's guide to [Amazon S3 CORS configuration elements](https://docs.aws.amazon.com/AmazonS3/latest/userguide/ManageCorsUsing.html).
 
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