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/notes-main-section.tsx

@@ -3,7 +3,6 @@
 import dynamic from 'next/dynamic'
 import { Note } from '@/lib/types'
 import { NotesTabsView } from '@/components/notes-tabs-view'
-import { NotesListView } from '@/components/notes-list-view'
 
 const MasonryGridLazy = dynamic(
   () => import('@/components/masonry-grid').then((m) => m.MasonryGrid),
@@ -18,7 +17,7 @@ const MasonryGridLazy = dynamic(
   }
 )
 
-export type NotesViewMode = 'masonry' | 'tabs' | 'list'
+export type NotesViewMode = 'masonry' | 'tabs'
 
 interface NotesMainSectionProps {
   notes: Note[]
@@ -43,14 +42,6 @@ export function NotesMainSection({
   onEnableHistory,
   onNoteCreated,
 }: NotesMainSectionProps) {
-  if (viewMode === 'list') {
-    return (
-      <div data-testid="notes-list">
-        <NotesListView notes={notes} onEdit={onEdit} />
-      </div>
-    )
-  }
-
   if (viewMode === 'tabs') {
     return (
       <div className="flex min-h-0 flex-1 flex-col" data-testid="notes-grid-tabs-wrap">