feat: consolidate to single Architectural Grid view and remove all notesViewMode logic

memento-note/locales/en.json

@@ -162,13 +162,6 @@
     "unpinned": "Unpinned",
     "redoShortcut": "Redo (Ctrl+Y)",
     "undoShortcut": "Undo (Ctrl+Z)",
-    "viewCards": "Cards View",
-    "viewCardsTooltip": "Card grid with drag-and-drop reorder",
-    "viewList": "List",
-    "viewListTooltip": "Scannable list with preview, dates, and labels",
-    "viewTabs": "Tabs",
-    "viewTabsTooltip": "Tabs on top, note below — drag tabs to reorder",
-    "viewModeGroup": "Notes display mode",
     "reorderTabs": "Reorder tab",
     "modified": "Modified",
     "created": "Created",