FIX - allow apps to move across the dock

frontend/src/stores/app-store.test.ts

@@ -76,7 +76,8 @@ describe('app store', () => {
     const apps = useAppStoreStore()
     apps.hydrate(null)
 
-    apps.moveHomeApp('mail', 'grid', 'grid', 0)
+    const mailIndex = apps.homeLayout.grid.indexOf('mail')
+    apps.moveHomeApp('grid', mailIndex, 'grid', 0)
     expect(apps.homeLayout.grid[0]).toBe('mail')
 
     apps.removeHomeApp('mail')

frontend/src/stores/app-store.ts

@@ -94,15 +94,15 @@ export const useAppStoreStore = defineStore('app-store', {
       this.persist()
     },
     moveHomeApp(
-      appId: LaunchablePhoneAppId,
       from: HomeArea,
+      sourceIndex: number,
       to: HomeArea,
       targetIndex: number,
     ): void {
       this.homeLayout = moveHomeApp(
         this.homeLayout,
-        appId,
         from,
+        sourceIndex,
         to,
         targetIndex,
       )