chore: add docs on configuring custom output rendering for annotation queues

src/langsmith/custom-output-rendering.mdx

@@ -3,36 +3,25 @@ title: Custom output rendering
 sidebarTitle: Custom output rendering
 ---
 
-This page describes how to use custom output rendering to visualize outputs from [_experiments_](/langsmith/evaluation-concepts#experiment) using your own custom HTML pages.
-
-You'll learn how to:
-
-- **[Configure custom rendering](#configure-custom-output-rendering)** in the LangSmith UI or via the API.
-- **[Build a custom renderer](#build-a-custom-renderer)** to display output data.
-- **[Understand where custom rendering appears](#where-custom-rendering-appears)** in LangSmith.
-
-## Overview
-
-By default, LangSmith displays outputs in a standard JSON format. With custom output rendering, you can replace this default view with your own HTML page that receives the output data via the postMessage API and renders it however you choose.
-
-This is particularly useful for:
+Custom output rendering allows you to visualize run outputs and dataset reference outputs using your own custom HTML pages. This is particularly useful for:
 
 - **Domain-specific formatting**: Display medical records, legal documents, or other specialized data types in their native format.
 - **Custom visualizations**: Create charts, graphs, or diagrams from numeric or structured output data.
 
-Custom rendering is configured per-[_dataset_](/langsmith/evaluation-concepts#datasets).
-
-## Prerequisites
+In this page you'll learn how to:
 
-<Check>
-- A LangSmith dataset
-- A web page that can receive postMessage events (can be hosted anywhere or run locally)
-- Basic knowledge of HTML/JavaScript and the postMessage API
-</Check>
+- **[Configure custom rendering](#configure-custom-output-rendering)** in the LangSmith UI.
+- **[Build a custom renderer](#build-a-custom-renderer)** to display output data.
+- **[Understand where custom rendering appears](#where-custom-rendering-appears)** in LangSmith.
 
 ## Configure custom output rendering
 
-### In the LangSmith UI
+Configure custom rendering at two levels:
+
+- **For datasets**: Apply custom rendering to all runs associated with that dataset, wherever they appear—in experiments, run detail panes, or annotation queues.
+- **For annotation queues**: Apply custom rendering to all runs within a specific annotation queue, regardless of which dataset they come from. This takes precedence over dataset-level configuration.
+
+### For datasets
 
 To configure custom output rendering for a dataset:
 
@@ -47,44 +36,22 @@ To configure custom output rendering for a dataset:
 
 ![Custom Output Rendering modal with fields filled in](/langsmith/images/custom-output-rendering-modal.png)
 
-### Via the API
+### For annotation queues
 
-You can also configure custom rendering programmatically by updating the dataset metadata:
+To configure custom output rendering for an annotation queue:
 
-<CodeGroup>
-```python Python
-from langsmith import Client
+![Annotation queue settings showing custom output rendering configuration](/langsmith/images/annotation-queue-custom-output-rendering-settings.png)
 
-client = Client()
-
-# Update dataset metadata with iframe config
-client.update_dataset(
-    dataset_id="your-dataset-id",
-    metadata={
-        "iframe_config": {
-            "enabled": True,
-            "url": "https://your-domain.com/output-renderer.html"
-        }
-    }
-)
-```
-
-```typescript TypeScript
-import { Client } from "langsmith";
-
-const client = new Client();
+1. Navigate to the **Annotation Queues** page.
+2. Click on an existing annotation queue or create a new one.
+3. In the annotation queue settings pane, scroll to the **Custom Output Rendering** section.
+4. Toggle **Enable custom output rendering**.
+5. Enter the webpage URL in the **URL** field.
+6. Click **Save** or **Create**.
 
-// Update dataset metadata with iframe config
-await client.updateDataset("your-dataset-id", {
-  metadata: {
-    iframe_config: {
-      enabled: true,
-      url: "https://your-domain.com/output-renderer.html"
-    }
-  }
-});
-```
-</CodeGroup>
+<Info>
+When custom rendering is configured at both levels, annotation queue configuration takes precedence over dataset configuration for runs viewed within that queue.
+</Info>
 
 ## Build a custom renderer
 
@@ -163,6 +130,6 @@ When enabled, your custom rendering will replace the default output view in:
 
 ![Run detail pane showing custom rendering](/langsmith/images/custom-output-rendering-run-details.png)
 
-- **Annotation queues**: When experiments are added to annotation queues for review:
+- **Annotation queues**: When reviewing runs in annotation queues:
 
 ![Annotation queue showing custom rendering](/langsmith/images/custom-output-rendering-annotation-queue.png)