fix: malio date (#77)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

---------

Co-authored-by: admin malio <malio@yuno.malio.fr>
Co-authored-by: THOLOT DECHENE Matthieu <matthieu@yuno.malio.fr>
Co-authored-by: matthieu <matthieu@yuno.malio.fr>
Reviewed-on: #77
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/date/Date.test.ts

@@ -17,6 +17,7 @@ type DateProps = {
   success?: string
   min?: string
   max?: string
+  markedDates?: Record<string, 'success' | 'danger'>
   clearable?: boolean
   editable?: boolean
   invalidMessage?: string
@@ -109,6 +110,48 @@ describe('MalioDate', () => {
     })
   })
 
+  describe('month-change', () => {
+    it('émet month-change à l\'ouverture avec le mois courant', async () => {
+      const wrapper = mountDate()
+      await wrapper.get('[data-test="date-input"]').trigger('click')
+      expect(wrapper.emitted('month-change')?.at(-1)).toEqual([{month: 4, year: 2026}])
+    })
+
+    it('émet month-change sur le mois de la valeur à l\'ouverture', async () => {
+      const wrapper = mountDate({modelValue: '2025-12-25'})
+      await wrapper.get('[data-test="date-input"]').trigger('click')
+      expect(wrapper.emitted('month-change')?.at(-1)).toEqual([{month: 11, year: 2025}])
+    })
+
+    it('émet month-change à chaque navigation de mois', async () => {
+      const wrapper = mountDate()
+      await wrapper.get('[data-test="date-input"]').trigger('click')
+      await wrapper.get('[data-test="header-next"]').trigger('click')
+      expect(wrapper.emitted('month-change')?.at(-1)).toEqual([{month: 5, year: 2026}])
+      await wrapper.get('[data-test="header-prev"]').trigger('click')
+      await wrapper.get('[data-test="header-prev"]').trigger('click')
+      expect(wrapper.emitted('month-change')?.at(-1)).toEqual([{month: 3, year: 2026}])
+    })
+
+    it('ne ré-émet pas month-change après fermeture', async () => {
+      const wrapper = mountDate()
+      await wrapper.get('[data-test="date-input"]').trigger('click')
+      const countOpen = wrapper.emitted('month-change')?.length ?? 0
+      document.body.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}))
+      await wrapper.vm.$nextTick()
+      expect(wrapper.emitted('month-change')?.length ?? 0).toBe(countOpen)
+    })
+  })
+
+  describe('markedDates', () => {
+    it('transmet markedDates à la grille (fond tokenisé)', async () => {
+      const wrapper = mountDate({markedDates: {'2026-05-20': 'success'}})
+      await wrapper.get('[data-test="date-input"]').trigger('click')
+      const pill = wrapper.get('[data-iso="2026-05-20"]').get('span.rounded-full')
+      expect(pill.classes()).toContain('bg-m-success/15')
+    })
+  })
+
   describe('sélection', () => {
     it('emits the ISO date and closes on day click', async () => {
       const wrapper = mountDate()