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/locales/fa.json

@@ -1496,7 +1496,10 @@
       "notifyEmail": "اعلان ایمیل",
       "notifyEmailHint": "پس از هر اجرا، ایمیل حاوی نتایج عامل دریافت کنید",
       "includeImages": "شامل تصاویر",
-      "includeImagesHint": "استخراج تصاویر از صفحات استخراج شده و پیوست به یادداشت تولید شده"
+      "includeImagesHint": "استخراج تصاویر از صفحات استخراج شده و پیوست به یادداشت تولید شده",
+      "back": "Back",
+      "configuration": "Configuration",
+      "options": "Options"
     },
     "frequencies": {
       "manual": "دستی",
@@ -1760,4 +1763,4 @@
     "addBlock": "افزودن بلوک",
     "placeholder": "برای دستورات '/' تایپ کنید..."
   }
-}
+}