docs: document migrations on Cloud (#13785)

www/apps/cloud/app/database/page.mdx

@@ -99,4 +99,18 @@ By default, when Medusa creates a [preview environment](../environments/preview/
 
 Cloud also allows you to configure which environment's database to replicate the preview database from. For example, you can replicate the Staging environment's database instead of Production.
 
-Learn more in the [Preview Environments](../environments/preview/page.mdx#manage-shared-previews-settings) guide.
+Learn more in the [Preview Environments](../environments/preview/page.mdx#manage-shared-previews-settings) guide.
+
+---
+
+## Running Migrations on Cloud
+
+Medusa automatically runs database migrations for every deployment on Cloud. This ensures that your database schema is always up-to-date with the latest changes in your Medusa application.
+
+When you deploy changes to an environment on Cloud, Medusa:
+
+1. Runs any [pending database migrations](!docs!/learn/fundamentals/data-models/write-migration).
+2. [Syncs links](!docs!/learn/fundamentals/module-links).
+3. [Runs pending data migration scripts](!docs!/learn/fundamentals/data-models/write-migration#data-migration-scripts).
+
+So, if you define new database migrations in your module, define new links, or add data migration scripts, Medusa will apply those changes automatically when you deploy the changes to Cloud.

www/apps/cloud/generated/edit-dates.mjs

@@ -6,7 +6,7 @@ export const generatedEditDates = {
   "app/deployments/page.mdx": "2025-10-17T14:40:07.793Z",
   "app/organizations/page.mdx": "2025-10-02T11:31:07.315Z",
   "app/notifications/page.mdx": "2025-10-15T15:25:33.672Z",
-  "app/database/page.mdx": "2025-10-15T15:20:06.292Z",
+  "app/database/page.mdx": "2025-10-20T15:47:46.364Z",
   "app/redis/page.mdx": "2025-10-15T15:22:34.997Z",
   "app/s3/page.mdx": "2025-10-15T15:23:02.835Z",
   "app/loyalty-plugin/page.mdx": "2025-10-15T15:27:40.303Z",