fix: handle user setting owner to itself

CHANGELOG.md

@@ -17,6 +17,8 @@
 - Updated the minimum Docker API used to support the latest Docker versions (via [#370](https://github.com/tale/headplane/pull/370)).
 - Enhanced the node tag dialog to show a dropdown of assignable tags (via [#362](https://github.com/tale/headplane/pull/362)).
 - Fixed an issue where the website favicon would not load correctly (closes [#323](https://github.com/tale/headplane/issues/323)).
+- Correctly handle invalid ACL policy inserts on Headscale 0.27+ (closes [#383](https://github.com/tale/headplane/issues/383)).
+- Prevent a machine from changing its owner to itself (closes [#373](https://github.com/tale/headplane/issues/373)).
 ---
 
 # 0.6.1 (October 12, 2025)

app/components/error-banner.tsx

@@ -135,7 +135,7 @@ export function getErrorMessage(error: Error | unknown): {
 					<br />
 					Status Code: <strong>{error.status}</strong>
 					<br />
-					Status Text: <strong>{error.statusText}</strong>
+					Status Text: <strong>{error.data}</strong>
 				</>
 			),
 		};

app/routes/machines/dialogs/move.tsx

@@ -11,11 +11,11 @@ interface MoveProps {
 }
 
 export default function Move({ machine, users, isOpen, setIsOpen }: MoveProps) {
-	const [userId, setUserId] = useState<Key | null>(null);
+	const [userId, setUserId] = useState<Key | null>(machine.user.id);
 
 	return (
 		<Dialog isOpen={isOpen} onOpenChange={setIsOpen}>
-			<Dialog.Panel>
+			<Dialog.Panel isDisabled={userId === machine.user.id}>
 				<Dialog.Title>Change the owner of {machine.givenName}</Dialog.Title>
 				<Dialog.Text>
 					The owner of the machine is the user associated with it.