chore: auto-commit (23 archivos)

- app.md
- backend/auth.go
- backend/db.go
- backend/dist/assets/index-CPqSy0gZ.js
- backend/dist/index.html
- backend/handlers.go
- backend/main.go
- frontend/src/App.tsx
- frontend/src/api.ts
- frontend/src/components/KanbanCard.tsx
- ...

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/components/KanbanColumn.tsx

@@ -50,6 +50,7 @@ interface Props {
   onToggleDone: (id: string, is_done: boolean) => void;
   onEditCard: (card: Card) => void;
   onDeleteCard: (id: string) => void;
+  onDuplicateCard: (id: string) => void;
   onChangeCardColor: (id: string, color: CardColor) => void;
   onShowHistory: (card: Card) => void;
   onToggleCardLock: (id: string, locked: boolean) => void;
@@ -82,6 +83,7 @@ function KanbanColumnImpl({
   onToggleDone,
   onEditCard,
   onDeleteCard,
+  onDuplicateCard,
   onChangeCardColor,
   onShowHistory,
   onToggleCardLock,
@@ -421,6 +423,7 @@ function KanbanColumnImpl({
                     now={now}
                     onDelete={onDeleteCard}
                     onEdit={onEditCard}
+                    onDuplicate={onDuplicateCard}
                     onChangeColor={onChangeCardColor}
                     onShowHistory={onShowHistory}
                     onToggleLock={onToggleCardLock}