feat(input) : anneau de focus clavier sur InputText et InputEmail

Anneau outline m-primary affiché uniquement à la navigation clavier (Tab),
pas au clic souris. Composable partagé useKbdFocusRing (détection de modalité
clavier/souris) + utilitaire CSS .m-focus-ring-kbd. Le visuel existant
(grossissement, label flottant, bordure bleue) reste inchangé.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/components/malio/input/InputEmail.vue

@@ -19,8 +19,8 @@
         type="email"
         inputmode="email"
         @input="onInput"
-        @focus="isFocused = true"
-        @blur="isFocused = false"
+        @focus="isFocused = true; onKbdFocus()"
+        @blur="isFocused = false; onKbdBlur()"
       >
 
       <label
@@ -82,9 +82,12 @@ 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'
 
 defineOptions({name: 'MalioInputEmail', inheritAttrs: false})
 
+const {keyboardFocused, onFocus: onKbdFocus, onBlur: onKbdBlur} = useKbdFocusRing()
+
 const props = withDefaults(
   defineProps<{
     id?: string
@@ -164,6 +167,7 @@ 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'