feat: reminder button in list/tabs view, notifications show reminders, trash count live update

- Add reminder action to NoteActions (masonry view) and NoteMetaSidebar (tabs view)
- NotificationPanel now fetches and displays upcoming/overdue reminders alongside share requests
- Badge count includes overdue reminders; overdue items show mark-as-done toggle
- Sidebar trash count refreshes on NoteRefreshContext trigger (no more manual refresh)
- Add "Clear completed" button on reminders page with clearCompletedReminders action
- Add i18n keys for new features (en/fr)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

memento-note/components/sidebar.tsx

@@ -23,6 +23,7 @@ import {
 import { useLanguage } from '@/lib/i18n'
 import { NotebooksList } from './notebooks-list'
 import { useHomeViewOptional } from '@/context/home-view-context'
+import { useNoteRefreshOptional } from '@/context/NoteRefreshContext'
 import { useEffect, useState } from 'react'
 import { getTrashCount } from '@/app/actions/notes'
 
@@ -34,6 +35,7 @@ export function Sidebar({ className, user }: { className?: string, user?: any })
   const router = useRouter()
   const { t } = useLanguage()
   const homeBridge = useHomeViewOptional()
+  const { refreshKey } = useNoteRefreshOptional()
   const [trashCount, setTrashCount] = useState(0)
 
   const searchKey = searchParams.toString()
@@ -44,7 +46,7 @@ export function Sidebar({ className, user }: { className?: string, user?: any })
   useEffect(() => {
     if (HIDDEN_ROUTES.some(r => pathname.startsWith(r))) return
     getTrashCount().then(setTrashCount)
-  }, [pathname, searchKey])
+  }, [pathname, searchKey, refreshKey])
 
   // Hide sidebar on Agents, Chat IA and Lab routes
   if (HIDDEN_ROUTES.some(r => pathname.startsWith(r))) return null