fix: MalioDate + MalioDateTime (#72)

| Numéro du ticket | Titre du ticket |
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## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [x] TU/TI/TF rédigée
- [x] TU/TI/TF OK
- [x] 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: #72
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/date/composables/datetimeFormat.test.ts

@@ -3,6 +3,7 @@ import {
   composeDateTime,
   formatIsoDateTimeToDisplay,
   isValidIsoDateTime,
+  parseDisplayToIsoDateTime,
   splitDateTime,
 } from './datetimeFormat'
 
@@ -49,6 +50,34 @@ describe('datetimeFormat', () => {
     })
   })
 
+  describe('parseDisplayToIsoDateTime', () => {
+    it('parse un JJ/MM/AAAA HH:MM valide en datetime ISO', () => {
+      expect(parseDisplayToIsoDateTime('20/05/2026 14:30')).toBe('2026-05-20T14:30:00')
+      expect(parseDisplayToIsoDateTime('01/01/2026 00:00')).toBe('2026-01-01T00:00:00')
+      expect(parseDisplayToIsoDateTime('31/12/2026 23:59')).toBe('2026-12-31T23:59:00')
+    })
+
+    it('tolère les espaces autour', () => {
+      expect(parseDisplayToIsoDateTime('  20/05/2026 14:30  ')).toBe('2026-05-20T14:30:00')
+    })
+
+    it('rejette une date malformée', () => {
+      expect(parseDisplayToIsoDateTime('32/01/2026 10:00')).toBeNull()
+      expect(parseDisplayToIsoDateTime('10/13/2026 10:00')).toBeNull()
+    })
+
+    it('rejette une heure hors bornes', () => {
+      expect(parseDisplayToIsoDateTime('20/05/2026 24:00')).toBeNull()
+      expect(parseDisplayToIsoDateTime('20/05/2026 12:60')).toBeNull()
+    })
+
+    it('rejette un format incomplet ou sans heure', () => {
+      expect(parseDisplayToIsoDateTime('20/05/2026')).toBeNull()
+      expect(parseDisplayToIsoDateTime('20/05/2026 14')).toBeNull()
+      expect(parseDisplayToIsoDateTime('')).toBeNull()
+    })
+  })
+
   describe('composeDateTime', () => {
     it('recompose un datetime ISO avec secondes à 00', () => {
       expect(composeDateTime('2026-05-20', '14:30')).toBe('2026-05-20T14:30:00')