Sync cli docs (#1028)

sync cli docs

Co-authored-by: Rich-Harris <[email protected]>

Author: github-actions[bot]

apps/svelte.dev/content/docs/cli/20-commands/40-sv-migrate.md

@@ -15,6 +15,10 @@ npx sv migrate [migration]
 
 ## Migrations
 
+### `app-state`
+
+Migrates `$app/store` usage to `$app/state` in `.svelte` files. See the [migration guide](/docs/kit/migrating-to-sveltekit-2#SvelteKit-2.12:-$app-stores-deprecated) for more details.
+
 ### `svelte-5`
 
 Upgrades a Svelte 4 app to use Svelte 5, and updates individual components to use [runes](../svelte/what-are-runes) and other Svelte 5 syntax ([see migration guide](../svelte/v5-migration-guide)).