블록 UX: 삭제/복제 버튼 및 단축키 추가

src/app/editor/page.tsx

@@ -44,6 +44,8 @@ export default function EditorPage() {
   const moveBlock = useEditorStore((state) => state.moveBlock);
   const undo = useEditorStore((state) => state.undo);
   const redo = useEditorStore((state) => state.redo);
+  const removeBlock = useEditorStore((state) => state.removeBlock);
+  const duplicateBlock = useEditorStore((state) => state.duplicateBlock);
 
   const [editingBlockId, setEditingBlockId] = useState<string | null>(null);
   const [editingText, setEditingText] = useState("");
@@ -200,7 +202,8 @@ export default function EditorPage() {
 
   const rootBlocks = blocks.filter((block) => !block.sectionId);
 
-  // 에디터 전역에서 Undo/Redo 단축키(Cmd/Ctrl+Z, Cmd/Ctrl+Shift+Z)와
+  // 에디터 전역에서 Undo/Redo 단축키(Cmd/Ctrl+Z, Cmd/Ctrl+Shift+Z),
+  // Delete/Backspace 기반 삭제, Cmd/Ctrl+D 기반 복제,
   // ArrowUp/ArrowDown을 이용한 선택 블록 이동을 처리한다.
   useEffect(() => {
     const handleKeyDown = (event: KeyboardEvent) => {
@@ -237,8 +240,29 @@ export default function EditorPage() {
       const isMac = navigator.platform.toLowerCase().includes("mac");
       const metaKey = isMac ? event.metaKey : event.ctrlKey;
 
+      // Delete / Backspace 로 선택된 블록 삭제
+      if (event.key === "Delete" || event.key === "Backspace") {
+        const { selectedBlockId: currentSelectedId } = (useEditorStore as any).getState();
+        if (currentSelectedId) {
+          event.preventDefault();
+          removeBlock(currentSelectedId);
+        }
+        return;
+      }
+
+      // Cmd/Ctrl 없는 경우에는 여기서 종료한다.
       if (!metaKey) return;
 
+      // Cmd/Ctrl + D → 현재 선택된 블록 복제
+      if (event.key.toLowerCase() === "d") {
+        const { selectedBlockId: currentSelectedId } = (useEditorStore as any).getState();
+        if (currentSelectedId) {
+          event.preventDefault();
+          duplicateBlock(currentSelectedId);
+        }
+        return;
+      }
+
       // Cmd/Ctrl + Shift + Z → Redo
       if (event.key.toLowerCase() === "z" && event.shiftKey) {
         event.preventDefault();
@@ -381,6 +405,22 @@ export default function EditorPage() {
           <h2 className="font-medium mb-2">속성 패널</h2>
           {selectedBlockId ? (
             <div className="space-y-3">
+              <div className="flex gap-2 text-[11px]">
+                <button
+                  type="button"
+                  className="flex-1 rounded border border-slate-700 bg-slate-900 px-2 py-1 text-slate-100 hover:bg-red-900/60 hover:border-red-700"
+                  onClick={() => removeBlock(selectedBlockId)}
+                >
+                  블록 삭제
+                </button>
+                <button
+                  type="button"
+                  className="flex-1 rounded border border-slate-700 bg-slate-900 px-2 py-1 text-slate-100 hover:bg-slate-800"
+                  onClick={() => duplicateBlock(selectedBlockId)}
+                >
+                  블록 복제
+                </button>
+              </div>
               {(() => {
                 const selectedBlock = blocks.find((b) => b.id === selectedBlockId);
                 if (!selectedBlock) return null;

src/features/editor/state/editorStore.ts

@@ -67,6 +67,8 @@ export interface EditorState {
   moveBlock: (id: string, sectionId: string | null, columnId: string | null) => void;
   undo: () => void;
   redo: () => void;
+  removeBlock: (id: string) => void;
+  duplicateBlock: (id: string) => void;
 }
 
 // 간단한 ID 생성기 (추후 uuid 라이브러리로 교체 가능)
@@ -486,6 +488,63 @@ const createEditorState = (set: any, get: any): EditorState => ({
         ),
       }));
     },
+    removeBlock: (id) => {
+      set((state: EditorState) => {
+        const current = state.blocks;
+        const index = current.findIndex((b) => b.id === id);
+        if (index === -1) {
+          return state;
+        }
+
+        const nextBlocks = current.filter((b) => b.id !== id);
+
+        // 선택 상태는 삭제된 블록의 이전 블록 또는 다음 블록으로 이동한다.
+        let nextSelected: string | null = null;
+        if (nextBlocks.length > 0) {
+          const prevIndex = index - 1;
+          if (prevIndex >= 0) {
+            nextSelected = nextBlocks[prevIndex].id;
+          } else {
+            // 첫 블록이 삭제된 경우, 새 첫 블록을 선택한다.
+            nextSelected = nextBlocks[0].id;
+          }
+        }
+
+        return {
+          ...state,
+          blocks: nextBlocks,
+          selectedBlockId: nextSelected,
+        };
+      });
+    },
+    duplicateBlock: (id) => {
+      set((state: EditorState) => {
+        const current = state.blocks;
+        const index = current.findIndex((b) => b.id === id);
+        if (index === -1) {
+          return state;
+        }
+
+        const original = current[index];
+        const newId = createId();
+
+        const cloned: Block = {
+          ...original,
+          id: newId,
+          // props 는 얕은 복사로 충분 (현재 props 는 모두 평면 구조)
+          props: { ...(original.props as any) },
+        };
+
+        const nextBlocks = [...current];
+        nextBlocks.splice(index + 1, 0, cloned);
+
+        return {
+          ...state,
+          blocks: nextBlocks,
+          selectedBlockId: newId,
+        };
+      });
+    },
     undo: () => {
       const { history, blocks } = get();
       if (history.length === 0) return;