fix(tutorial): correct punctuation in tutorial restart modal message

frontend/src/__tests__/UserProfile.spec.ts

@@ -417,7 +417,6 @@ describe('UserProfile - Auto-save', () => {
   it('saveNames sends PUT with first and last name', async () => {
     await flushPromises()
     await nextTick()
-
     ;(global.fetch as any).mockResolvedValueOnce({ ok: true, json: async () => ({}) })
 
     wrapper.vm.firstName = 'Updated'
@@ -435,7 +434,6 @@ describe('UserProfile - Auto-save', () => {
   it('saveImage sends PUT with image_id', async () => {
     await flushPromises()
     await nextTick()
-
     ;(global.fetch as any).mockResolvedValueOnce({ ok: true, json: async () => ({}) })
 
     await wrapper.vm.saveImage('new-image-id')
@@ -502,7 +500,6 @@ describe('UserProfile - Auto-save', () => {
   it('shows error message on failed profile update', async () => {
     await flushPromises()
     await nextTick()
-
     ;(global.fetch as any).mockResolvedValueOnce({
       ok: false,
       status: 500,
@@ -579,7 +576,6 @@ describe('UserProfile - Notification Toggles', () => {
     wrapper = mountWithDigest(true)
     await flushPromises()
     await nextTick()
-
     ;(global.fetch as any).mockResolvedValueOnce({ ok: true, json: async () => ({}) })
 
     await wrapper.vm.onToggleDigest(false)
@@ -595,7 +591,6 @@ describe('UserProfile - Notification Toggles', () => {
     wrapper = mountWithDigest(true)
     await flushPromises()
     await nextTick()
-
     ;(global.fetch as any).mockResolvedValueOnce({ ok: true, json: async () => ({}) })
 
     expect(wrapper.vm.pushEnabled).toBe(false)
@@ -666,6 +661,6 @@ describe('UserProfile - Tutorial restart', () => {
 
     const modal = wrapper.find('.mock-modal')
     expect(modal.text()).toContain('Tutorial Restart')
-    expect(modal.text()).toContain('Tutorial mode has been restarted')
+    expect(modal.text()).toContain('Tutorial mode has been restarted.')
   })
 })