Fix admin modals replaying old action results after create or edit

src/routes/(protected)/admin/user-roles/+page.svelte

@@ -28,15 +28,21 @@
 	let successMessage = $state('');
 	let lastForm = $state<ActionResult>(null);
 
-	$effect(() => {
-		const rec = editingRecord ?? {};
-		name = String(rec.name ?? '');
-		if (!editingRecord) {
-			formError = '';
-			fieldErrors = {};
-			successMessage = '';
+	let closeTimer: ReturnType<typeof setTimeout> | undefined;
+
+	function clearCloseTimer() {
+		if (closeTimer) {
+			clearTimeout(closeTimer);
+			closeTimer = undefined;
 		}
-	});
+	}
+
+	function resetModalState() {
+		clearCloseTimer();
+		formError = '';
+		fieldErrors = {};
+		successMessage = '';
+	}
 
 	$effect(() => {
 		if (!form || form === lastForm) return;
@@ -46,9 +52,10 @@
 			formError = '';
 			fieldErrors = {};
 			successMessage = editingRecord ? 'Role updated' : 'Role created';
-			setTimeout(() => {
+			closeTimer = setTimeout(() => {
 				modalOpen = false;
 				successMessage = '';
+				closeTimer = undefined;
 			}, 1200);
 		} else {
 			successMessage = '';
@@ -58,18 +65,23 @@
 	});
 
 	function openCreate() {
+		resetModalState();
 		editingRecord = null;
-		lastForm = null;
+		name = '';
+		lastForm = form;
 		modalOpen = true;
 	}
 
 	function openEdit(record: Record<string, unknown>) {
+		resetModalState();
 		editingRecord = record;
-		lastForm = null;
+		name = String(record.name ?? '');
+		lastForm = form;
 		modalOpen = true;
 	}
 
 	function closeModal() {
+		clearCloseTimer();
 		modalOpen = false;
 		editingRecord = null;
 	}