feat: Add iOS auto-update SDK (#15711)

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## DESCRIBE YOUR PR
Adding docs for the new update SDK released in iOS v9

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## PRE-MERGE CHECKLIST

*Make sure you've checked the following before merging your changes:*

- [ ] Checked Vercel preview for correctness, including links
- [ ] PR was reviewed and approved by any necessary SMEs (subject matter
experts)
- [ ] PR was reviewed and approved by a member of the [Sentry docs
team](https://github.com/orgs/getsentry/teams/docs)

## EXTRA RESOURCES

- [Sentry Docs contributor guide](https://docs.sentry.io/contributing/)

Author: noahsmartin

docs/platforms/android/build-distribution/auto-update.mdx

@@ -21,25 +21,7 @@ Make sure your Sentry Java version is at least 8.27.0 and you have the [Sentry A
 
 You'll also need an [internal integration token](#create-an-integration-token) with Build Distribution permissions.
 
-## Create an Integration Token
-
-To use the Auto-Update SDK, you need to create an internal integration token with the appropriate permissions:
-
-1. Navigate to **Settings > Custom Integrations** in your Sentry organization
-2. Click **Create New Integration**
-  ![Create New Integration =800x](./images/create-new-integration.png)
-
-3. Select **Internal Integration** and click **Next**
-  ![Internal Integration =600x](./images/internal-integration.png)
-
-4. Give your integration a name (e.g., "Build Distribution")
-  ![Name token =800x](./images/name-token.png)
-5. Under **Permissions**, select **Read** next to the **Distribution** scope.
-  ![Set Permissions =800x](./images/set-permissions.png)
-6. Click **Save Changes**
-7. Scroll down to the Tokens section and click **New Token**
-   ![Create New Token =800x](./images/create-auth-token.png)
-8. Copy the generated token to your CI secrets as an environment `SENTRY_DISTRIBUTION_AUTH_TOKEN`
+<Include name="build-distribution/create-integration-token" />
 
 ## Installation
 
@@ -79,6 +61,8 @@ sentry {
 }
 ```
 
+This expects to find the environment variable `SENTRY_DISTRIBUTION_AUTH_TOKEN`, copy the token you generated in the preceding step to this variable in your CI environment.
+
 ### Configuration Options
 
 | Option | Description | Default |

docs/platforms/apple/guides/ios/build-distribution/auto-update.mdx

@@ -0,0 +1,83 @@
+---
+title: Auto-Update SDK
+sidebar_title: Auto-Update SDK
+sidebar_order: 10
+description: Enable automatic update checks and installations for internal iOS builds using the Sentry Auto-Update SDK.
+---
+
+<Include name="feature-available-for-user-group-early-adopter" />
+
+<Alert level="warning">
+
+The Auto-Update SDK is designed for **internal builds only** and should never be used in production builds distributed through the App Store.
+
+</Alert>
+
+The Sentry Auto-Update SDK enables your internal iOS builds to automatically check for and install newer versions distributed through Sentry's Build Distribution. This is particularly useful for distributing nightly, alpha, or beta builds to your internal teams. It is not required to use the Sentry crash reporting SDK to use the iOS Auto-Update SDK.
+
+## Pre-requisites
+
+The SDK can only be installed using Swift Package Manager.
+
+You'll also need an [internal integration token](#create-an-integration-token) with Build Distribution permissions.
+
+<Include name="build-distribution/create-integration-token" />
+
+## Installation
+
+Add a dependency on the `SentryDistribution` target contained in the sentry-cocoa package (https://github.com/getsentry/sentry-cocoa)
+
+```swift {filename:Package.swift}
+.package(url: "https://github.com/getsentry/sentry-cocoa", from: "{{@inject packages.version('sentry.cocoa') }}"),
+
+.target(name: "MyTarget", dependencies: ["SentryDistribution"]),
+```
+
+## Usage
+
+Use the SDK by calling `Updater.checkForUpdate(params: )`. In addition to the access token, provide your Sentry org and project slug in the CheckForUpdateParams. For example:
+
+```swift {filename:MyView.swift}
+import SentryDistribution
+import SwiftUI
+
+struct MyView: View {
+  var body: some View {
+    Button("Check For Update") {
+      let params = CheckForUpdateParams(
+        accessToken: "MY_TOKEN",
+        organization: "___ORG_SLUG___",
+        project: "___PROJECT_SLUG___")
+      Updater.checkForUpdate(params: params) { result in
+        handleUpdateResult(result: result)
+      }
+    }
+  }
+  
+  static func handleUpdateResult(result: Result<UpdateCheckResponse, Error>) {
+    guard case let .success(releaseInfo) = result else {
+        // Handle error
+        return
+    }
+    
+    guard let releaseInfo = releaseInfo.update else {
+      print("Already up to date")
+      return
+    }
+    
+    guard let url = Updater.buildUrlForInstall(releaseInfo.downloadUrl) else {
+      return
+    }
+    DispatchQueue.main.async {
+      Updater.install(url: url)
+    }
+  }
+}
+```
+
+## Security Considerations
+
+- **Internal Use Only**: Never ship the auto-update SDK in production builds destined for public app stores
+- **Token Security**: The distribution token is embedded in the app and can be extracted by reverse engineering. Use tokens with only the distribution read permission which is the minimum required permission for the auto-update SDK.
+
+

includes/build-distribution/create-integration-token.mdx

@@ -0,0 +1,19 @@
+## Create an Integration Token
+
+To use the Auto-Update SDK, you need to create an internal integration token with the appropriate permissions:
+
+1. Navigate to **Settings > Custom Integrations** in your Sentry organization
+1. Click **Create New Integration**
+  ![Create New Integration =800x](./images/create-new-integration.png)
+
+1. Select **Internal Integration** and click **Next**
+  ![Internal Integration =600x](./images/internal-integration.png)
+
+1. Give your integration a name (e.g., "Build Distribution")
+  ![Name token =800x](./images/name-token.png)
+1. Under **Permissions**, select **Read** next to the **Distribution** scope.
+  ![Set Permissions =800x](./images/set-permissions.png)
+1. Click **Save Changes**
+1. Scroll down to the Tokens section and click **New Token**
+  ![Create New Token =800x](./images/create-auth-token.png)
+1. Save the generated token, you'll need it to integrate the SDK