prevent login and password reset for system accounts

packages/frontend/src/components/MkSignin.vue

@@ -77,6 +77,7 @@ import { misskeyApi } from '@/scripts/misskey-api.js';
 import { query, extractDomain } from '@/scripts/url.js';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
+import { showSystemAccountDialog } from '@/scripts/show-system-account-dialog.js';
 
 const signing = ref(false);
 const user = ref<Misskey.entities.UserDetailed | null>(null);
@@ -204,6 +205,10 @@ function loginFailed(err: any): void {
 			showSuspendedDialog();
 			break;
 		}
+		case 's8dhsj9s-a93j-493j-ja9k-kas9sj20aml2': {
+			showSystemAccountDialog();
+			break;
+		}
 		case '22d05606-fbcf-421a-a2db-b32610dcfd1b': {
 			os.alert({
 				type: 'error',

packages/frontend/src/pages/admin-user.vue

@@ -83,7 +83,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<MkSwitch v-model="markedAsNSFW" @update:modelValue="toggleNSFW">{{ i18n.ts.markAsNSFW }}</MkSwitch>
 
 						<div>
-							<MkButton v-if="user.host == null" inline style="margin-right: 8px;" @click="resetPassword"><i class="ti ti-key"></i> {{ i18n.ts.resetPassword }}</MkButton>
+							<MkButton v-if="user.host == null && !isSystem" inline style="margin-right: 8px;" @click="resetPassword"><i class="ti ti-key"></i> {{ i18n.ts.resetPassword }}</MkButton>
 						</div>
 
 						<MkFolder>

packages/frontend/src/scripts/show-system-account-dialog.ts

@@ -0,0 +1,15 @@
+/*
+ * SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as os from '@/os.js';
+import { i18n } from '@/i18n.js';
+
+export function showSystemAccountDialog(): Promise<void> {
+	return os.alert({
+		type: 'error',
+		title: i18n.ts.systemAccountTitle,
+		text: i18n.ts.systemAccountDescription,
+	});
+}