fix(editor): Show switch-to-static warning after connecting a private credential (#31712)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/frontend/editor-ui/src/features/credentials/components/CredentialEdit/CredentialEdit.test.ts

@@ -13,6 +13,7 @@ import { useWorkflowsStore } from '@/app/stores/workflows.store';
 import { useNodeTypesStore } from '@/app/stores/nodeTypes.store';
 import type { ICredentialsResponse } from '../../credentials.types';
 import { within, waitFor } from '@testing-library/vue';
+import userEvent from '@testing-library/user-event';
 import type { ICredentialType, INode, INodeTypeDescription } from 'n8n-workflow';
 
 vi.mock('vue-router', async () => ({
@@ -32,6 +33,17 @@ vi.mock('@/app/composables/useToast', () => ({
 	}),
 }));
 
+const { confirmMock } = vi.hoisted(() => ({ confirmMock: vi.fn() }));
+
+vi.mock('@/app/composables/useMessage', () => ({
+	useMessage: () => ({ confirm: confirmMock }),
+}));
+
+vi.mock('@/features/resolvers/composables/useDynamicCredentials', async () => {
+	const { ref } = await vi.importActual<typeof import('vue')>('vue');
+	return { useDynamicCredentials: () => ({ isEnabled: ref(true) }) };
+});
+
 const oAuth2Api: ICredentialType = {
 	name: 'oAuth2Api',
 	displayName: 'OAuth2 API',
@@ -946,5 +958,60 @@ describe('CredentialEdit', () => {
 			await retry(() => expect(credentialsStore.getCredentialData).toHaveBeenCalled());
 			await retry(() => expect(queryByTestId('oauth-not-connected-banner')).not.toBeVisible());
 		});
+
+		describe('switching a connected private credential to static', () => {
+			test('shows the confirmation modal when the current user just connected, even if the server count is stale', async () => {
+				confirmMock.mockResolvedValue('confirm');
+				const pinia = createPiniaForBannerTest();
+				// connectedByMe reflects the in-session connection; connectedUserCount is the
+				// stale server value (0) that does not yet include the current user.
+				const credentialsStore = setupOAuthCredential({
+					isResolvable: true,
+					connectedByMe: true,
+					connectedUserCount: 0,
+				});
+
+				const { getByRole } = renderComponent({
+					props: {
+						activeId: 'cred-banner',
+						modalName: CREDENTIAL_EDIT_MODAL_KEY,
+						mode: 'edit',
+					},
+					pinia,
+				});
+
+				await retry(() => expect(credentialsStore.getCredentialData).toHaveBeenCalled());
+
+				await userEvent.click(getByRole('switch'));
+
+				await retry(() => expect(confirmMock).toHaveBeenCalled());
+				expect(confirmMock.mock.calls[0][0]).toContain('1 user(s)');
+			});
+
+			test('does not show the confirmation modal when no users are connected', async () => {
+				confirmMock.mockResolvedValue('confirm');
+				const pinia = createPiniaForBannerTest();
+				const credentialsStore = setupOAuthCredential({
+					isResolvable: true,
+					connectedByMe: false,
+					connectedUserCount: 0,
+				});
+
+				const { getByRole } = renderComponent({
+					props: {
+						activeId: 'cred-banner',
+						modalName: CREDENTIAL_EDIT_MODAL_KEY,
+						mode: 'edit',
+					},
+					pinia,
+				});
+
+				await retry(() => expect(credentialsStore.getCredentialData).toHaveBeenCalled());
+
+				await userEvent.click(getByRole('switch'));
+
+				expect(confirmMock).not.toHaveBeenCalled();
+			});
+		});
 	});
 });

packages/frontend/editor-ui/src/features/credentials/components/CredentialEdit/CredentialEdit.vue

@@ -785,8 +785,12 @@ async function onResolvableChange(value: boolean) {
 			return;
 		}
 	} else if (isTogglingToStatic) {
-		// Private → Static: warn only when there are connected users to disconnect
-		const connectedUserCount = currentCredential.value?.connectedUserCount ?? 0;
+		// Private → Static: warn only when there are connected users to disconnect.
+		// `connectedUserCount` reflects the server state at modal-open and isn't
+		// refreshed when the current user connects within the same session, so fold
+		// in `connectedByMe` to make sure the warning still appears in that case.
+		const serverConnectedCount = currentCredential.value?.connectedUserCount ?? 0;
+		const connectedUserCount = Math.max(serverConnectedCount, connectedByMe.value ? 1 : 0);
 		if (connectedUserCount > 0) {
 			const confirmAction = await confirmModal('switchToStatic', {
 				count: String(connectedUserCount),