fix: accessibilité des composants (#70)

| 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: #70
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/input/InputAmount.vue

@@ -9,10 +9,9 @@
         :autocomplete="autocomplete"
         :class="mergedInputClass"
         :required="required"
-        :maxlength="maxLength"
         :minlength="minLength"
         :disabled="disabled"
-        :value="currentValue"
+        :value="formattedValue"
         :readonly="readonly"
         :aria-invalid="!!error"
         :aria-describedby="describedBy"
@@ -21,7 +20,7 @@
         inputmode="decimal"
         placeholder="_"
         @input="onInput"
-        @focus="isFocused = true"
+        @focus="isFocused = true; onKbdFocus()"
         @blur="onBlur"
       >
 
@@ -66,9 +65,13 @@ import {computed, ref, useAttrs, useId} from 'vue'
 import { Icon as IconifyIcon } from '@iconify/vue'
 import {twMerge} from 'tailwind-merge'
 import MalioRequiredMark from '../shared/RequiredMark.vue'
+import {useKbdFocusRing} from '../shared/useKbdFocusRing'
+import {normalizeAmount, formatGroupedAmount, countSignificant, caretFromSignificant} from './composables/amountFormat'
 
 defineOptions({name: 'MalioInputAmount', inheritAttrs: false})
 
+const {keyboardFocused, onFocus: onKbdFocus, onBlur: onKbdBlur} = useKbdFocusRing()
+
 const props = withDefaults(
   defineProps<{
     id?: string
@@ -126,6 +129,7 @@ const isFocused = ref(false)
 const inputId = computed(() => props.id?.toString() || `malio-input-amount-${generatedId}`)
 const isControlled = computed(() => props.modelValue !== undefined)
 const currentValue = computed(() => (isControlled.value ? (props.modelValue ?? '') : localValue.value))
+const formattedValue = computed(() => formatGroupedAmount(currentValue.value))
 const hasError = computed(() => !!props.error)
 const hasSuccess = computed(() => !!props.success)
 const isFilled = computed(() => currentValue.value.trim().length > 0)
@@ -145,6 +149,7 @@ const mergedGroupClass = computed(() =>
 const mergedInputClass = computed(() =>
   twMerge(
     'floating-input peer min-h-[40px] w-full border bg-white pl-3 pr-3 py-1 outline-none placeholder:text-transparent text-lg rounded-md',
+    keyboardFocused.value ? 'm-focus-ring-kbd' : '',
     isReadonly.value ? '' : 'grow-height',
     isReadonly.value
       ? 'border-black'
@@ -190,40 +195,37 @@ const emit = defineEmits<{
   (event: 'update:modelValue', value: string): void
 }>()
 
-const normalizeAmount = (value: string) => {
-  const sanitizedValue = value
-    .replace(/\s+/g, '')
-    .replace(/,/g, '.')
-    .replace(/[^\d.]/g, '')
-  const [integerPartRaw = '', ...decimalParts] = sanitizedValue.split('.')
-  const integerPart = integerPartRaw.replace(/^0+(?=\d)/, '')
-  const decimalPart = decimalParts.join('').slice(0, 2)
-
-  if (sanitizedValue.includes('.')) {
-    return `${integerPart || '0'}.${decimalPart}`
-  }
-
-  return integerPart
-}
-
-// Keep the DOM input value, local state, and v-model emission in sync.
-const updateValue = (target: HTMLInputElement, value: string) => {
-  target.value = value
-  if (!isControlled.value) {
-    localValue.value = value
-  }
-  emit('update:modelValue', value)
-}
-
-// Normalize while typing so the field never keeps invalid amount characters.
+// À la frappe : parse vers le modèle propre (émis), reformate l'affichage groupé, repositionne le curseur.
 const onInput = (event: Event) => {
   const target = event.target as HTMLInputElement
-  updateValue(target, normalizeAmount(target.value))
+  const rawText = target.value
+  const caret = target.selectionStart ?? rawText.length
+  const model = normalizeAmount(rawText)
+
+  // maxLength borne la longueur du MODÈLE (pas l'affichage) : on ignore le keystroke en dépassement.
+  if (props.maxLength != null && model.length > Number(props.maxLength)) {
+    target.value = formattedValue.value
+    const restored = Math.min(Math.max(0, caret - 1), formattedValue.value.length)
+    target.setSelectionRange(restored, restored)
+    return
+  }
+
+  const display = formatGroupedAmount(model)
+  const sig = countSignificant(rawText, caret)
+  target.value = display
+  const newCaret = caretFromSignificant(display, sig)
+  target.setSelectionRange(newCaret, newCaret)
+
+  if (!isControlled.value) {
+    localValue.value = model
+  }
+  emit('update:modelValue', model)
 }
 
 // Keep the blur handler only for focus-driven UI state.
 const onBlur = () => {
   isFocused.value = false
+  onKbdBlur()
 }
 
 const iconInputPaddingClass = computed(() => {