feat: copy/pasting for elements

apps/web/src/hooks/use-editor-actions.ts

@@ -202,6 +202,23 @@ export function useEditorActions() {
     undefined
   );
 
+  useActionHandler(
+    "copy-selected",
+    () => {
+      if (selectedElements.length === 0) return;
+      useTimelineStore.getState().copySelected();
+    },
+    undefined
+  );
+
+  useActionHandler(
+    "paste-selected",
+    () => {
+      useTimelineStore.getState().pasteAtTime(currentTime);
+    },
+    undefined
+  );
+
   useActionHandler(
     "toggle-snapping",
     () => {

apps/web/src/hooks/use-keyboard-shortcuts-help.ts

@@ -63,6 +63,14 @@ const actionDescriptions: Record<
   "toggle-snapping": { description: "Toggle snapping", category: "Editing" },
   undo: { description: "Undo", category: "History" },
   redo: { description: "Redo", category: "History" },
+  "copy-selected": {
+    description: "Copy selected elements",
+    category: "Editing",
+  },
+  "paste-selected": {
+    description: "Paste elements at playhead",
+    category: "Editing",
+  },
 };
 
 // Convert key binding format to display format