feat: add self-service account deletion docs

content/manage-your-account/account-deletion.mdx

@@ -0,0 +1,47 @@
+---
+title: Account deletion
+description: Learn how to permanently delete your Knock account and what happens to your data.
+tags: ["account", "deletion", "delete"]
+section: Manage your account
+---
+
+## Overview
+
+Account owners can permanently delete their Knock account from the dashboard. This action is irreversible. Once you delete your account, all data associated with it is permanently removed and cannot be recovered.
+
+## Before you delete
+
+Consider the following before deleting your account:
+
+- **Production workflows.** Deactivate or migrate any production workflows that are still sending notifications. Deleting your account will immediately stop all notification delivery.
+- **API keys.** All API keys will be revoked immediately. Any applications or services using these keys will lose access to Knock.
+- **Account members.** All [account members](/manage-your-account/managing-members) will lose access. They will receive an email informing them that the account has been deleted.
+- **Integrations.** Any active channel integrations (email, push, chat, SMS) will stop working.
+
+## What happens to your data
+
+When you delete your account, Knock permanently removes all data associated with it:
+
+- **Account data.** Workflows, templates, layouts, assets, branding, and environment configuration
+- **Recipient data.** Users, objects, tenants, and all associated data
+- **Message history and logs.** Message logs, API logs, workflow run logs, and audit logs
+
+For context on how Knock handles data during normal operation, see [data retention](/manage-your-account/data-retention).
+
+## What happens to account members
+
+All members are removed from the account when it is deleted. Each member receives an email informing them that the account has been deleted. Learn more about [managing account members](/manage-your-account/managing-members).
+
+## How to delete your account
+
+1. Open your account settings in the Knock dashboard.
+2. Navigate to the **General** section.
+3. Find the **Delete account** option and follow the prompts to confirm.
+4. Enter your account slug to confirm the deletion.
+5. Confirm the deletion. Your account and all associated data will be permanently removed after 24 hours.
+
+<Callout
+  type="alert"
+  title="Note"
+  text="Account deletion is permanent and cannot be undone. Make sure you have exported or migrated any data you need before proceeding."
+/>

content/manage-your-account/roles-and-permissions.mdx

@@ -45,6 +45,7 @@ For a complete overview of which permissions are available to which roles, see o
           columnsYes: ["Owner", "Admin"],
         },
         { name: "Manage account branding", columnsYes: ["Owner", "Admin"] },
+        { name: "Delete account", columnsYes: ["Owner"] },
       ],
     },
     {

data/sidebars/platformSidebar.ts

@@ -212,6 +212,7 @@ export const PLATFORM_SIDEBAR: SidebarSection[] = [
       { slug: "/data-retention", title: "Data retention" },
       { slug: "/custom-domains", title: "Custom domains" },
       { slug: "/managing-assets", title: "Managing assets" },
+      { slug: "/account-deletion", title: "Account deletion" },
     ],
   },
 ];