Add shared registration invite helper and use it for admin-created users

src/lib/server/registration-invite.ts

@@ -0,0 +1,18 @@
+import { auth } from '$lib/auth';
+
+/**
+ * Email an invited user a link to set their password and finish their profile.
+ *
+ * Reuses Better Auth's password-reset token flow; the `invite=1` marker makes
+ * the reset-password hook send the `registration-email` template instead of the
+ * usual "you requested a reset" email. The link lands on /reset-password, and
+ * after setting a password the user logs in and is sent to /profile/setup.
+ */
+export async function sendRegistrationInvite(email: string): Promise<void> {
+	await auth.api.requestPasswordReset({
+		body: {
+			email,
+			redirectTo: '/reset-password?invite=1'
+		}
+	});
+}

src/routes/(protected)/admin/users/+page.server.ts

@@ -1,6 +1,6 @@
 import type { PageServerLoad, Actions } from './$types';
 import { prisma } from '$lib/db';
-import { auth } from '$lib/auth';
+import { sendRegistrationInvite } from '$lib/server/registration-invite';
 import { superValidate } from 'sveltekit-superforms/server';
 import { zod4 } from 'sveltekit-superforms/adapters';
 import { z } from 'zod';
@@ -96,15 +96,7 @@ export const actions: Actions = {
 
 		if (!rawId) {
 			try {
-				// Send a registration email with a set-password link. This reuses
-				// Better Auth's reset-password token flow; `invite=1` tells the
-				// email hook to send the welcome/registration template instead.
-				await auth.api.requestPasswordReset({
-					body: {
-						email: data.email,
-						redirectTo: '/reset-password?invite=1'
-					}
-				});
+				await sendRegistrationInvite(data.email);
 			} catch (err) {
 				console.error('Failed to send registration email:', err);
 			}

src/routes/(protected)/admin/users/page.server.spec.ts

@@ -14,12 +14,12 @@ vi.mock('$lib/db', () => ({
 	}
 }));
 
-const { requestPasswordReset } = vi.hoisted(() => ({
-	requestPasswordReset: vi.fn()
+const { sendRegistrationInvite } = vi.hoisted(() => ({
+	sendRegistrationInvite: vi.fn()
 }));
 
-vi.mock('$lib/auth', () => ({
-	auth: { api: { requestPasswordReset } }
+vi.mock('$lib/server/registration-invite', () => ({
+	sendRegistrationInvite
 }));
 
 import { prisma } from '$lib/db';
@@ -47,7 +47,7 @@ describe('users admin page server upsert', () => {
 		userFindUnique.mockResolvedValue({ roleId: 1 });
 		userCreate.mockResolvedValue({ id: 'new-user' });
 		userUpdate.mockResolvedValue({ id: 'user-1' });
-		requestPasswordReset.mockResolvedValue(undefined);
+		sendRegistrationInvite.mockResolvedValue(undefined);
 	});
 
 	it('marks a created user verified and emails a set-password link', async () => {
@@ -62,12 +62,7 @@ describe('users admin page server upsert', () => {
 				emailVerified: true
 			})
 		});
-		expect(requestPasswordReset).toHaveBeenCalledWith({
-			body: {
-				email: 'jane@example.com',
-				redirectTo: '/reset-password?invite=1'
-			}
-		});
+		expect(sendRegistrationInvite).toHaveBeenCalledWith('jane@example.com');
 	});
 
 	it('does not email a registration link when updating an existing user', async () => {
@@ -77,11 +72,11 @@ describe('users admin page server upsert', () => {
 		expect(result).toEqual({ success: true, action: 'upsert' });
 		expect(userUpdate).toHaveBeenCalled();
 		expect(userCreate).not.toHaveBeenCalled();
-		expect(requestPasswordReset).not.toHaveBeenCalled();
+		expect(sendRegistrationInvite).not.toHaveBeenCalled();
 	});
 
 	it('still succeeds when the registration email fails to send', async () => {
-		requestPasswordReset.mockRejectedValue(new Error('resend down'));
+		sendRegistrationInvite.mockRejectedValue(new Error('resend down'));
 
 		const locals = createLocals(mockUser() as any);
 		const result = await invokeUpsert(upsertRequest(), locals);