Feat: サーバー初期設定ウィザード (#15954)

* wip

* wip

* Update welcome.setup.vue

* wip

* wip

* wip

* wip

* Update MkServerSetupWizard.vue

* Update MkServerSetupWizard.vue

* wip

* wip

* wip

* Update types.ts

* wip

* wip

* Update CHANGELOG.md

packages/frontend/src/os.ts

@@ -547,18 +547,24 @@ export function success(): Promise<void> {
 	});
 }
 
-export function waiting(text?: string | null): Promise<void> {
-	return new Promise(resolve => {
-		const showing = ref(true);
-		const { dispose } = popup(MkWaitingDialog, {
-			success: false,
-			showing: showing,
-			text,
-		}, {
-			done: () => resolve(),
-			closed: () => dispose(),
-		});
+export function waiting(text?: string | null): () => void {
+	window.document.body.setAttribute('inert', 'true');
+
+	const showing = ref(true);
+	const { dispose } = popup(MkWaitingDialog, {
+		success: false,
+		showing: showing,
+		text,
+	}, {
+		closed: () => {
+			window.document.body.removeAttribute('inert');
+			dispose();
+		},
 	});
+
+	return () => {
+		showing.value = false;
+	};
 }
 
 export function form<F extends Form>(title: string, f: F): Promise<{ canceled: true, result?: undefined } | { canceled?: false, result: GetFormResultType<F> }> {