fix: note en double au retour et barre Gras/Italique à l’ouverture

Ne plus réinjecter une note déjà dans la liste, et n’afficher le menu de formatage que sur une vraie sélection de texte.

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/components/home-client.tsx

@@ -318,6 +318,8 @@ export function HomeClient({
     }
 
     setNotes((prevNotes) => {
+      if (prevNotes.some((n) => n.id === note.id)) return prevNotes
+
       const notebookFilter = searchParams.get('notebook')
       const labelFilter = searchParams.get('labels')?.split(',').filter(Boolean) || []
       const colorFilter = searchParams.get('color')
@@ -630,12 +632,16 @@ export function HomeClient({
         removeNoteFromList(detail.noteId)
         setPinnedNotes(prev => prev.filter(n => n.id !== detail.noteId))
       } else if (detail.type === 'created' && detail.note) {
-        setNotes(prev => [detail.note, ...prev])
+        setNotes((prev) => {
+          if (prev.some((n) => n.id === detail.note.id)) return prev
+          if (filterNotesForCurrentView([detail.note]).length === 0) return prev
+          return [detail.note, ...prev]
+        })
       }
     }
     window.addEventListener(NOTE_CHANGE_EVENT, onNoteChange)
     return () => window.removeEventListener(NOTE_CHANGE_EVENT, onNoteChange)
-  }, [patchNoteInList])
+  }, [patchNoteInList, filterNotesForCurrentView])
 
   const handleGridReorder = useCallback(
     async (orderedIds: string[]) => {
@@ -787,7 +793,12 @@ export function HomeClient({
 
   // Apply sort order to notes
   const sortedNotes = useMemo(() => {
-    let sorted = [...notes]
+    const seen = new Set<string>()
+    let sorted = notes.filter((n) => {
+      if (seen.has(n.id)) return false
+      seen.add(n.id)
+      return true
+    })
     if (sortOrder === 'newest') sorted.sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime())
     if (sortOrder === 'oldest') sorted.sort((a, b) => new Date(a.createdAt).getTime() - new Date(b.createdAt).getTime())
     if (sortOrder === 'alpha') sorted.sort((a, b) => (a.title || '').localeCompare(b.title || ''))