feat: bổ sung phần menu insert

app/static/js/app.jsx

@@ -8728,6 +8728,25 @@ const App = () => {
         handleDeleteTrack();
       }
     }]
+  }, {
+    label: 'Insert',
+    items: [{
+      label: 'Insert Section',
+      icon: 'folder-plus',
+      action: () => showToast('Insert section', 'info')
+    }, {
+      label: 'Insert MIDI item',
+      icon: 'music',
+      action: () => showToast('Insert MIDI item', 'info')
+    }, {
+      label: 'Insert sound clip',
+      icon: 'file-input',
+      action: () => showToast('Insert sound clip', 'info')
+    }, {
+      label: 'Insert track',
+      icon: 'plus',
+      action: addNewTrack
+    }]
   }, {
     label: 'View',
     items: [{
@@ -8780,7 +8799,7 @@ const App = () => {
     onClick: () => setMenuOpen(menuOpen === menu.label ? null : menu.label),
     className: `px-3 py-1 text-xs font-medium transition rounded ${menuOpen === menu.label ? 'bg-zinc-700 text-zinc-100' : 'text-zinc-400 hover:text-zinc-200 hover:bg-zinc-800'}`
   }, menu.label), menuOpen === menu.label && /*#__PURE__*/React.createElement("div", {
-    className: "absolute top-full left-0 mt-0.5 bg-[#2a2a2a] border border-zinc-700 rounded-lg shadow-2xl py-1 w-64 z-50",
+    className: `absolute top-full left-0 mt-0.5 bg-[#2a2a2a] border border-zinc-700 rounded-lg shadow-2xl py-1 z-50 ${menu.label === 'Edit' ? 'w-72' : 'w-64'}`,
     onClick: () => setMenuOpen(null)
   }, menu.items.map((item, i) => item.sep ? /*#__PURE__*/React.createElement("div", {
     key: i,