feat: redesign agents page (architectural-grid style), add image description, fix AI limits, remove dead code

- Redesign agents page with architectural-grid (8) design system:
  rounded-2xl cards, serif headings, motion tabs, dashed templates section
- Replace agent form popup with full-page detail view (SettingsView style)
  with dark planning card, section tooltips, and help button
- Hide advanced mode for slide/excalidraw generators
- Add 'describe images' action to contextual AI assistant
- Add copy button to action/resource preview with HTTP fallback
- Add delete history button to agent run log panel
- Increase AI word limit from 2000 to 5000 (reformulate + transform-markdown)
- Increase max steps slider from 25 to 50
- Fix image description error with clear model compatibility message
- Fix doubled execution count display in agent detail view
- Remove dead files: notes-list-view.tsx, notes-view-toggle.tsx
- Remove 'list' view mode from NotesViewMode type
- Add missing i18n keys (back, configuration, options, copy, cleared)

memento-note/components/recent-notes-section.tsx

@@ -2,7 +2,7 @@
 
 import { useState, useTransition, useOptimistic } from 'react'
 import { Note } from '@/lib/types'
-import { Clock, Pin, FolderOpen, Trash2, Folder, X } from 'lucide-react'
+import { Clock, Pin, FolderOpen, Trash2, X } from 'lucide-react'
 import { cn } from '@/lib/utils'
 import { useLanguage } from '@/lib/i18n'
 import { Button } from './ui/button'
@@ -12,7 +12,6 @@ import { useRouter } from 'next/navigation'
 import { useNotebooks } from '@/context/notebooks-context'
 import { useRefresh } from '@/lib/use-refresh'
 import { toast } from 'sonner'
-import { StickyNote } from 'lucide-react'
 
 interface RecentNotesSectionProps {
   recentNotes: Note[]
@@ -196,7 +195,7 @@ function CompactCard({
               {t('notebookSuggestion.moveToNotebook')}
             </div>
             <DropdownMenuItem onClick={() => handleMoveToNotebook(null)}>
-              <StickyNote className="h-4 w-4 mr-2" />
+              <span className="w-4 h-4 rounded-full bg-foreground text-background flex items-center justify-center text-[9px] font-semibold mr-2 shrink-0">N</span>
               {t('notebookSuggestion.generalNotes')}
             </DropdownMenuItem>
             {notebooks.map((notebook: any) => (
@@ -204,7 +203,7 @@ function CompactCard({
                 key={notebook.id}
                 onClick={() => handleMoveToNotebook(notebook.id)}
               >
-                <Folder className="h-4 w-4 mr-2" />
+                <span className="w-4 h-4 rounded-full bg-foreground text-background flex items-center justify-center text-[9px] font-semibold mr-2 shrink-0">{notebook.name.charAt(0).toUpperCase()}</span>
                 {notebook.name}
               </DropdownMenuItem>
             ))}