fix: Memory Echo sans vol de scroll, badge IA sidebar, wizard langue

- Ne plus auto-scroller vers Memory Echo : pastille bas de page + reset scroll au titre
- Badges notes/carnets générés par l’IA dans la sidebar
- Wizard : langue du contenu = langue de la requête ; refresh carnet après création
- Voix : erreurs not-allowed/no-speech moins bruyantes

memento-note/components/note-editor/note-editor-full-page.tsx

@@ -23,7 +23,7 @@ import { NoteAttachments } from '@/components/note-attachments'
 import { DocumentQAOverlay } from '@/components/document-qa-overlay'
 import { useLanguage } from '@/lib/i18n'
 import { useAiConsent } from '@/components/legal/ai-consent-provider'
-import { useState } from 'react'
+import { useEffect, useRef, useState } from 'react'
 import { WikilinksBacklinksPanel } from '@/components/wikilinks-backlinks-panel'
 import { MemoryEchoSection } from '@/components/memory-echo-section'
 
@@ -40,6 +40,14 @@ export function NoteEditorFullPage({ onClose }: NoteEditorFullPageProps) {
   const [attachmentsCount, setAttachmentsCount] = useState(0)
   const [uploadTrigger, setUploadTrigger] = useState(0)
   const [comparisonSimilarity, setComparisonSimilarity] = useState<number | undefined>()
+  const scrollRootRef = useRef<HTMLDivElement>(null)
+
+  // Always open a note at the top (title visible) — never inherit previous scroll
+  useEffect(() => {
+    const el = scrollRootRef.current
+    if (!el) return
+    el.scrollTop = 0
+  }, [note.id])
 
   const fetchNotesByIds = async (noteIds: string[]) => {
     const notes = await Promise.all(noteIds.map(async (id) => {
@@ -67,7 +75,10 @@ export function NoteEditorFullPage({ onClose }: NoteEditorFullPageProps) {
       {/* ── outer container ── */}
       <div className="flex flex-1 min-h-0 h-full w-full items-stretch overflow-hidden">
         {/* ── main scrollable column ── */}
-        <div className="flex-1 flex flex-col overflow-y-auto bg-white dark:bg-background min-w-0">
+        <div
+          ref={scrollRootRef}
+          className="flex-1 flex flex-col overflow-y-auto bg-white dark:bg-background min-w-0"
+        >
 
           {/* TOOLBAR */}
           <NoteEditorToolbar mode="fullPage" onClose={onClose} onToggleAttachments={() => setUploadTrigger(v => v + 1)} attachmentsCount={attachmentsCount} />

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

@@ -117,6 +117,9 @@ export function NoteEditorToolbar({ mode, onClose, onToggleAttachments, attachme
 
   const { state: voiceState, toggle: toggleVoice, isSupported: voiceSupported } = useVoiceTranscription({
     onTranscript: handleTranscript,
+    onError: (message) => {
+      toast.error(message)
+    },
   })
 
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