fix(ux-audit): CRITICAL + HIGH fixes — a11y, reduced-motion, forms, keyboard nav

Global (globals.css):
- prefers-reduced-motion: désactive toutes les animations/transitions
- focus-visible:ring global sur tous les éléments interactifs

Search modal:
- role="dialog" + aria-modal="true" + aria-label
- onClick backdrop ferme la modale

Insights peek:
- DOMPurify.sanitize() sur dangerouslySetInnerHTML (XSS fix)

Login form:
- autoComplete="email" / "current-password"
- htmlFor sur tous les labels

Register form:
- autoComplete="name" / "email" / "new-password"
- htmlFor sur tous les labels

GridCard (notes-list-views):
- Actions visibles sur mobile (opacity-100 sm:opacity-0)
- aria-sort sur colonne triable
- role="button" + tabIndex + onKeyDown sur lignes table

Editorial view:
- role="button" + tabIndex + onKeyDown sur articles
- Menu trigger aria-label + visible mobile

Toolbar:
- aria-label voice i18n

memento-note/app/(main)/insights/page.tsx

@@ -28,6 +28,7 @@ import Link from 'next/link'
 import { getNoteById } from '@/app/actions/notes'
 import type { Note as NoteFull } from '@/lib/types'
 import { X, Maximize2 } from 'lucide-react'
+import DOMPurify from 'dompurify'
 
 const NetworkGraph = dynamic(
   () => import('@/components/network-graph').then(m => ({ default: m.NetworkGraph })),
@@ -934,7 +935,7 @@ export default function InsightsPage() {
                   <div
                     dir="auto"
                     className="prose prose-sm dark:prose-invert max-w-none text-ink dark:text-dark-ink [&_a]:text-blue-600 [&_blockquote]:border-l-blue-400"
-                    dangerouslySetInnerHTML={{ __html: peekNote.content }}
+                    dangerouslySetInnerHTML={{ __html: DOMPurify.sanitize(peekNote.content) }}
                   />
                 ) : (
                   <p className="text-sm text-concrete italic">—</p>

memento-note/app/globals.css

@@ -6,6 +6,25 @@
 
 @custom-variant dark (&:is(.dark *));
 
+/* ── Global UX fixes (UI/UX Pro Max audit) ────────────────────────────── */
+
+/* CRITICAL: prefers-reduced-motion — désactive toutes les animations */
+@media (prefers-reduced-motion: reduce) {
+  *, *::before, *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+    scroll-behavior: auto !important;
+  }
+}
+
+/* CRITICAL: focus-visible ring global sur tous les éléments interactifs */
+:focus-visible {
+  outline: 2px solid var(--color-brand-accent);
+  outline-offset: 2px;
+  border-radius: 4px;
+}
+
 /* Custom breakpoints for desktop design (matching code.html reference) */
 @theme {
   /* Desktop breakpoints: 1024px (min), 1440px (large), 1920px (ultra-wide) */

memento-note/components/login-form.tsx

@@ -86,7 +86,7 @@ export function LoginForm({
 
         <form action={dispatch} className="space-y-4">
           <div className="space-y-1.5">
-            <label className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
+            <label htmlFor="email" className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
               {t('auth.email')}
             </label>
             <div className="relative group">
@@ -98,6 +98,7 @@ export function LoginForm({
                 id="email"
                 type="email"
                 name="email"
+                autoComplete="email"
                 placeholder={t('auth.emailPlaceholder')}
                 required
               />
@@ -106,7 +107,7 @@ export function LoginForm({
 
           <div className="space-y-1.5">
             <div className="flex justify-between items-center px-4">
-              <label className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)]">
+              <label htmlFor="password" className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)]">
                 {t('auth.password')}
               </label>
               <Link
@@ -125,6 +126,7 @@ export function LoginForm({
                 id="password"
                 type="password"
                 name="password"
+                autoComplete="current-password"
                 placeholder="••••••••"
                 required
                 minLength={6}

memento-note/components/note-editor/note-editor-toolbar.tsx

@@ -668,7 +668,7 @@ export function NoteEditorToolbar({ mode, onClose, onToggleAttachments, attachme
               title={voiceState === 'listening'
                 ? (t('editor.voiceStop') || 'Arrêter la dictée')
                 : (t('editor.voiceStart') || 'Dicter du texte')}
-              aria-label={voiceState === 'listening' ? 'Stop voice' : 'Start voice'}
+              aria-label={voiceState === 'listening' ? (t('richTextEditor.stopVoice') || 'Stop voice') : (t('richTextEditor.startVoice') || 'Start voice')}
               onClick={toggleVoice}
               className={cn(
                 'p-1.5 rounded-full border transition-all',

memento-note/components/notes-editorial-view.tsx

@@ -157,7 +157,8 @@ export function EditorialNoteMenu({
         <DropdownMenuTrigger asChild onClick={e => e.stopPropagation()}>
           <button
             ref={menuTriggerRef}
-            className="opacity-0 group-hover:opacity-100 transition-opacity p-1.5 rounded-md hover:bg-muted/60 text-muted-foreground hover:text-foreground"
+            className="opacity-100 sm:opacity-0 sm:group-hover:opacity-100 transition-opacity p-1.5 rounded-md hover:bg-muted/60 text-muted-foreground hover:text-foreground cursor-pointer"
+            aria-label={t('notes.moreOptions') || 'Options'}
           >
             <MoreHorizontal size={15} />
           </button>
@@ -396,6 +397,9 @@ export function NotesEditorialView({
               transition={hydrated ? { delay: 0.05 * index, duration: 0.6 } : { duration: 0 }}
               className="space-y-4 group cursor-pointer relative pb-8"
               onClick={() => onOpen(note)}
+              onKeyDown={(e) => { if (e.key === 'Enter') onOpen(note) }}
+              tabIndex={0}
+              role="button"
             >
               {/* Date / breadcrumb — isolated bidi so Latin notebook name + Jalali date don’t reorder wrongly */}
               <div

memento-note/components/notes-list-views.tsx

@@ -385,6 +385,7 @@ export function NotesListViews({
                 <th
                   className="w-[18%] px-4 py-3 text-[10px] uppercase tracking-widest font-black text-muted-foreground cursor-pointer hover:text-foreground"
                   onClick={() => handleSort('modified')}
+                  aria-sort={sortColumn === 'modified' ? (sortDirection === 'asc' ? 'ascending' : 'descending') : 'none'}
                 >
                   <span className="inline-flex items-center gap-1">
                     {t('notes.tableModified')} <SortIcon field="modified" />
@@ -401,7 +402,10 @@ export function NotesListViews({
                   <tr
                     key={note.id}
                     onClick={() => onOpen(note)}
-                    className="h-11 hover:bg-foreground/[0.02] cursor-pointer transition-colors group"
+                    onKeyDown={(e) => { if (e.key === 'Enter') onOpen(note) }}
+                    tabIndex={0}
+                    role="button"
+                    className="h-11 hover:bg-foreground/[0.02] cursor-pointer transition-colors group focus-visible:bg-foreground/[0.04]"
                   >
                     <td className="px-4 py-2 font-memento-serif text-[13px] font-medium truncate max-w-[280px]">
                       <span className="inline-flex items-center gap-2 truncate group-hover:text-brand-accent transition-colors">
@@ -781,7 +785,7 @@ const GridCard = memo(function GridCard({
         </div>
         <div className="flex items-center justify-between pt-3 mt-auto border-t border-foreground/[0.03] dark:border-white/[0.03] text-[9.5px] text-muted-foreground font-medium uppercase tracking-wider">
           <span>{formattedDate}</span>
-          <div className="flex items-center gap-1 opacity-0 group-hover/card:opacity-100 transition-opacity">
+          <div className="flex items-center gap-1 opacity-100 sm:opacity-0 sm:group-hover/card:opacity-100 transition-opacity">
             <button
               type="button"
               onClick={handleBrainstormClick}

memento-note/components/register-form.tsx

@@ -66,7 +66,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
 
         <form action={dispatch} className="space-y-4">
           <div className="space-y-1.5">
-            <label className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
+            <label htmlFor="name" className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
               {t('auth.name')}
             </label>
             <div className="relative group">
@@ -78,6 +78,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
                 id="name"
                 type="text"
                 name="name"
+                autoComplete="name"
                 placeholder={t('auth.namePlaceholder')}
                 required
               />
@@ -85,7 +86,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
           </div>
 
           <div className="space-y-1.5">
-            <label className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
+            <label htmlFor="email" className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
               {t('auth.email')}
             </label>
             <div className="relative group">
@@ -97,6 +98,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
                 id="email"
                 type="email"
                 name="email"
+                autoComplete="email"
                 placeholder={t('auth.emailPlaceholder')}
                 required
               />
@@ -104,7 +106,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
           </div>
 
           <div className="space-y-1.5">
-            <label className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
+            <label htmlFor="password" className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
               {t('auth.password')}
             </label>
             <div className="relative group">
@@ -116,6 +118,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
                 id="password"
                 type="password"
                 name="password"
+                autoComplete="new-password"
                 placeholder={t('auth.passwordMinChars')}
                 required
                 minLength={6}
@@ -124,7 +127,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
           </div>
 
           <div className="space-y-1.5">
-            <label className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
+            <label htmlFor="confirmPassword" className="text-[10px] uppercase tracking-widest font-bold text-[var(--muted-foreground)] px-4">
               {t('auth.confirmPassword')}
             </label>
             <div className="relative group">
@@ -136,6 +139,7 @@ export function RegisterForm({ googleAuthEnabled = false }: { googleAuthEnabled?
                 id="confirmPassword"
                 type="password"
                 name="confirmPassword"
+                autoComplete="new-password"
                 placeholder={t('auth.confirmPasswordPlaceholder')}
                 required
                 minLength={6}

memento-note/components/search-modal.tsx

@@ -409,7 +409,13 @@ export function SearchModal({ isOpen, onClose }: SearchModalProps) {
   if (!isOpen) return null
 
   return (
-    <div className="fixed inset-0 bg-black/40 dark:bg-black/60 backdrop-blur-sm flex items-center justify-center z-[200] p-4 sm:p-6 select-none">
+    <div
+      className="fixed inset-0 bg-black/40 dark:bg-black/60 backdrop-blur-sm flex items-center justify-center z-[200] p-4 sm:p-6 select-none"
+      role="dialog"
+      aria-modal="true"
+      aria-label="Recherche"
+      onClick={(e) => { if (e.target === e.currentTarget) onClose() }}
+    >
       <motion.div
         initial={{ opacity: 0, scale: 0.98, y: 8 }}
         animate={{ opacity: 1, scale: 1, y: 0 }}