diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx
index cbc9a44..9e850a7 100644
--- a/app/static/js/app.jsx
+++ b/app/static/js/app.jsx
@@ -4544,7 +4544,7 @@ const AIPresetModal = ({ isOpen, onClose }) => {
 };
 
 const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, onClose, onUpdateNotes, onSaveNotes, setSubTabs, onPlayPause, onStop, isPlaying, playPreviewNote, showToast }) => {
-  const [activeRollTool, setActiveRollTool] = React.useState('select');
+  const [activeRollTool, setActiveRollTool] = React.useState('pen');
   const [snapVal, setSnapVal] = React.useState('1/16');
   const [ccMode, setCcMode] = React.useState('velocity');
   const [rollZoom, setRollZoom] = React.useState(60); // local horizontal zoom factor
diff --git a/app/static/js/app.precompiled.js b/app/static/js/app.precompiled.js
index a1153ad..066093b 100644
--- a/app/static/js/app.precompiled.js
+++ b/app/static/js/app.precompiled.js
@@ -127,7 +127,7 @@ const[projectsList,setProjectsList]=useState([]);const[loadingProjects,setLoadin
 const[filesList,setFilesList]=useState([]);const[loadingFiles,setLoadingFiles]=useState(false);// Confirmation modal state
 const[confirmModal,setConfirmModal]=useState(null);const handleDragStart=e=>{const r=dragRef.current;r.active=true;r.startX=e.clientX;r.startY=e.clientY;r.ofsX=dragOfs.x;r.ofsY=dragOfs.y;const onMove=ev=>{if(!r.active)return;setDragOfs({x:r.ofsX+ev.clientX-r.startX,y:r.ofsY+ev.clientY-r.startY});};const onUp=()=>{r.active=false;document.removeEventListener('mousemove',onMove);document.removeEventListener('mouseup',onUp);};document.addEventListener('mousemove',onMove);document.addEventListener('mouseup',onUp);};useEffect(()=>{if(isOpen){fetchProfile();if(activeTab==='projects')fetchProjects();if(activeTab==='files')fetchFiles();}},[isOpen,activeTab]);const fetchProfile=async()=>{try{const data=await window.SonicAPI.getProfile();setProfile(data);}catch(e){setError(e.message||'Không thể tải thông tin profile');}};const fetchProjects=async()=>{setLoadingProjects(true);try{const data=await window.SonicAPI.listCloudProjects();setProjectsList(data||[]);}catch(e){showToast(e.message||'Không thể tải danh sách dự án','error');}finally{setLoadingProjects(false);}};const fetchFiles=async()=>{setLoadingFiles(true);try{const activeFileIds=tracks.map(t=>t.serverFileId).filter(Boolean);const data=await window.SonicAPI.listMyFiles(activeFileIds);setFilesList(data||[]);}catch(e){showToast(e.message||'Không thể tải danh sách tệp tin','error');}finally{setLoadingFiles(false);}};const handleOpenProject=async projectId=>{setAppWarningModal({title:"Mở dự án",message:"Bạn có muốn mở dự án này? Các thay đổi chưa lưu trên workspace hiện tại sẽ bị mất.",isAlert:false,onConfirm:async()=>{try{const proj=await window.SonicAPI.getCloudProject(projectId);const parsed=JSON.parse(proj.data_json);let restoredTracks=[];let restoredBpm=bpm;let restoredSessionTabs=[];let restoredSubTabs=[];if(parsed.main_session){const result=deserializeProjectFromSchema(parsed);restoredTracks=result.tracks;restoredBpm=result.bpm;restoredSessionTabs=result.sessionTabs;restoredSubTabs=result.subTabs;}else{restoredTracks=(parsed.tracks||[]).map(t=>{const{height:_h,...rest}=t;return{...rest,buffer:null,channelInfo:t.channelInfo||null,clips:t.clips||[],serverFileId:t.serverFileId||null};});}setTracks(restoredTracks);setBpm(restoredBpm.toString());setSelectedTrackId(restoredTracks[0]?.id||'1');setProjectName(proj.name);setCurrentProjectId(proj.id);if(restoredSessionTabs.length>0){setSessionTabs(restoredSessionTabs);}if(restoredSubTabs.length>0){setSubTabs(restoredSubTabs);}localStorage.setItem('sonic_project_name',proj.name);localStorage.setItem('sonic_project_id',proj.id);showToast(`Đã nạp dự án "${proj.name}" thành công!`,"success");}catch(e){showToast(e.message||"Lỗi khi nạp dự án","error");}}});};const handleDeleteProject=async(projectId,e)=>{e.stopPropagation();setConfirmModal({title:"Xóa dự án Cloud",message:"Bạn có chắc chắn muốn xóa dự án này khỏi Cloud? Hành động này không thể hoàn tác.",onConfirm:async()=>{try{await window.SonicAPI.deleteCloudProject(projectId);showToast("Đã xóa dự án thành công!","success");fetchProjects();fetchProfile();}catch(err){showToast(err.message||"Lỗi khi xóa dự án","error");}}});};const handleDeleteFile=async fileId=>{if(!confirm(`Bạn có chắc chắn muốn xóa tệp tin ${fileId}?`))return;try{await window.SonicAPI.deleteMyFile(fileId);showToast("Đã xóa tệp tin thành công!","success");fetchFiles();fetchProfile();}catch(err){showToast(err.message||"Lỗi khi xóa tệp tin","error");}};const handleCleanUnusedFiles=async()=>{const unusedFiles=filesList.filter(f=>!f.is_in_use);if(unusedFiles.length===0){showToast("Không có tập tin rác nào để dọn dẹp.","info");return;}if(!confirm(`Bạn có chắc chắn muốn xóa tất cả ${unusedFiles.length} tập tin rác để giải phóng dung lượng?`))return;let successCount=0;for(const file of unusedFiles){try{await window.SonicAPI.deleteMyFile(file.file_id);successCount++;}catch(e){console.error("Lỗi xóa file rác: ",file.file_id,e);}}showToast(`Đã dọn dẹp thành công ${successCount}/${unusedFiles.length} tập tin rác!`,"success");fetchFiles();fetchProfile();};const handleChangePassword=async e=>{e.preventDefault();setMsg('');setError('');setLoading(true);try{const res=await window.SonicAPI.changePassword(oldPassword,newPassword);setMsg(res.message||'Đổi mật khẩu thành công!');setOldPassword('');setNewPassword('');}catch(err){setError(err.message||'Lỗi khi đổi mật khẩu');}finally{setLoading(false);}};const modalStyle={left:`calc(50% + ${dragOfs.x}px)`,top:`calc(50% + ${dragOfs.y}px)`,transform:'translate(-50%, -50%)'};return/*#__PURE__*/React.createElement(React.Fragment,null,/*#__PURE__*/React.createElement("div",{key:"backdrop",className:"fixed inset-0 z-40 bg-black/70 backdrop-blur-sm",onClick:onClose}),confirmModal&&/*#__PURE__*/React.createElement("div",{key:"confirm-overlay",className:"fixed inset-0 z-[60] flex items-center justify-center bg-black/50"},/*#__PURE__*/React.createElement("div",{className:"bg-[#262626] border border-[#383838] rounded-lg shadow-2xl p-5 max-w-sm w-full text-slate-200"},/*#__PURE__*/React.createElement("h4",{className:"text-sm font-bold text-rose-400 mb-2"},confirmModal.title),/*#__PURE__*/React.createElement("p",{className:"text-xs text-slate-300 mb-4"},confirmModal.message),/*#__PURE__*/React.createElement("div",{className:"flex justify-end gap-2"},/*#__PURE__*/React.createElement("button",{onClick:()=>setConfirmModal(null),className:"px-3 py-1.5 bg-zinc-700 hover:bg-zinc-600 text-slate-300 rounded text-xs font-semibold"},"Hủy"),/*#__PURE__*/React.createElement("button",{onClick:()=>{const fn=confirmModal.onConfirm;setConfirmModal(null);fn();},className:"px-3 py-1.5 bg-rose-700 hover:bg-rose-600 text-white rounded text-xs font-semibold"},"Xác nhận xóa")))),/*#__PURE__*/React.createElement("div",{key:"dialog",className:"fixed z-50 bg-[#262626] border border-[#383838] rounded-xl shadow-2xl w-full max-w-2xl p-6 text-slate-200 flex flex-col max-h-[85vh]",style:modalStyle},/*#__PURE__*/React.createElement("div",{className:"flex justify-between items-center pb-3 border-b border-[#383838] shrink-0 cursor-grab active:cursor-grabbing select-none",onMouseDown:handleDragStart},/*#__PURE__*/React.createElement("h3",{className:"text-md font-bold text-teal-400 flex items-center gap-1.5"},"👤 Hồ Sơ Cá Nhân & Quản Lý Dự Án"),/*#__PURE__*/React.createElement("button",{onClick:onClose,className:"text-slate-400 hover:text-slate-200"},"✕")),/*#__PURE__*/React.createElement("div",{className:"flex gap-2 border-b border-[#383838] py-2 shrink-0 text-xs font-semibold"},[/*#__PURE__*/React.createElement("button",{key:"tab-acc",onClick:()=>setActiveTab('account'),className:`px-3 py-1.5 rounded transition ${activeTab==='account'?'bg-teal-950/60 text-teal-300 border border-teal-800':'text-slate-400 hover:text-slate-200'}`},"Tài Khoản"),/*#__PURE__*/React.createElement("button",{key:"tab-proj",onClick:()=>setActiveTab('projects'),className:`px-3 py-1.5 rounded transition ${activeTab==='projects'?'bg-teal-950/60 text-teal-300 border border-teal-800':'text-slate-400 hover:text-slate-200'}`},"Dự Án Cloud"),/*#__PURE__*/React.createElement("button",{key:"tab-files",onClick:()=>setActiveTab('files'),className:`px-3 py-1.5 rounded transition ${activeTab==='files'?'bg-teal-950/60 text-teal-300 border border-teal-800':'text-slate-400 hover:text-slate-200'}`},"Tập Tin Của Tôi")]),/*#__PURE__*/React.createElement("div",{className:"flex-1 overflow-y-auto pt-4 space-y-4 pr-1 min-h-[300px]"},activeTab==='account'&&profile?[/*#__PURE__*/React.createElement("div",{key:"quota-info",className:"bg-[#1e1e1e] p-4 rounded-lg border border-[#333] grid grid-cols-2 gap-4 text-xs"},[/*#__PURE__*/React.createElement("div",{key:"username"},[/*#__PURE__*/React.createElement("span",{className:"text-slate-500 block"},"Tên người dùng"),/*#__PURE__*/React.createElement("span",{className:"font-bold text-teal-300 text-sm"},profile.username)]),/*#__PURE__*/React.createElement("div",{key:"role"},[/*#__PURE__*/React.createElement("span",{className:"text-slate-500 block"},"Vai trò"),/*#__PURE__*/React.createElement("span",{className:"uppercase font-semibold text-amber-400"},profile.role)]),/*#__PURE__*/React.createElement("div",{key:"email"},[/*#__PURE__*/React.createElement("span",{className:"text-slate-500 block"},"Email"),/*#__PURE__*/React.createElement("span",null,profile.email)]),/*#__PURE__*/React.createElement("div",{key:"quota"},[/*#__PURE__*/React.createElement("span",{className:"text-slate-500 block"},"Dung lượng Quota"),/*#__PURE__*/React.createElement("span",{className:"font-semibold text-slate-200"},`${profile.quota.used_mb} MB / ${profile.quota.storage_limit_mb} MB`)])]),/*#__PURE__*/React.createElement("div",{key:"progress"},[/*#__PURE__*/React.createElement("div",{className:"flex justify-between text-xs mb-1"},[/*#__PURE__*/React.createElement("span",{className:"text-slate-400"},"Tiến trình sử dụng bộ nhớ Server"),/*#__PURE__*/React.createElement("span",{className:"font-bold text-teal-400"},`${(profile.quota.used_mb/profile.quota.storage_limit_mb*100).toFixed(1)}%`)]),/*#__PURE__*/React.createElement("div",{className:"w-full h-2 bg-slate-800 rounded-full overflow-hidden"},[/*#__PURE__*/React.createElement("div",{className:"h-full bg-teal-500 rounded-full transition-all duration-300",style:{width:`${Math.min(100,profile.quota.used_mb/profile.quota.storage_limit_mb*100)}%`}})])]),/*#__PURE__*/React.createElement("form",{key:"pwd-form",onSubmit:handleChangePassword,className:"pt-4 border-t border-[#383838] space-y-3"},[/*#__PURE__*/React.createElement("h4",{className:"text-xs font-bold text-slate-300 uppercase"},"Thay Đổi Mật Khẩu"),msg&&/*#__PURE__*/React.createElement("div",{className:"p-2 bg-emerald-950/60 border border-emerald-700 text-emerald-300 rounded text-xs"},msg),error&&/*#__PURE__*/React.createElement("div",{className:"p-2 bg-red-950/60 border border-red-700 text-red-300 rounded text-xs"},error),/*#__PURE__*/React.createElement("div",{key:"old"},[/*#__PURE__*/React.createElement("label",{className:"block text-xs text-slate-400 mb-1"},"Mật khẩu cũ"),/*#__PURE__*/React.createElement("input",{type:"password",autoComplete:"current-password",required:true,value:oldPassword,onChange:e=>setOldPassword(e.target.value),className:"w-full bg-[#1e1e1e] border border-[#383838] rounded px-3 py-1.5 text-xs focus:outline-none focus:border-teal-500"})]),/*#__PURE__*/React.createElement("div",{key:"new"},[/*#__PURE__*/React.createElement("label",{className:"block text-xs text-slate-400 mb-1"},"Mật khẩu mới"),/*#__PURE__*/React.createElement("input",{type:"password",autoComplete:"new-password",required:true,value:newPassword,onChange:e=>setNewPassword(e.target.value),className:"w-full bg-[#1e1e1e] border border-[#383838] rounded px-3 py-1.5 text-xs focus:outline-none focus:border-teal-500"})]),/*#__PURE__*/React.createElement("button",{type:"submit",disabled:loading,className:"w-full py-1.5 bg-teal-600 hover:bg-teal-500 text-white font-semibold text-xs rounded transition"},loading?'Đang cập nhật...':'Cập Nhật Mật Khẩu')])]:activeTab==='projects'?[loadingProjects?/*#__PURE__*/React.createElement("div",{key:"loading",className:"text-center py-8 text-xs text-zinc-500"},"Đang tải danh sách dự án..."):projectsList.length===0?/*#__PURE__*/React.createElement("div",{key:"empty",className:"text-center py-8 text-xs text-zinc-500"},"Bạn chưa có dự án nào lưu trên Cloud."):/*#__PURE__*/React.createElement("div",{key:"list",className:"space-y-1.5"},[projectsList.map(proj=>/*#__PURE__*/React.createElement("div",{key:proj.id,onClick:()=>handleOpenProject(proj.id),className:"flex items-center justify-between p-3 bg-[#1e1e1e] hover:bg-zinc-800 rounded border border-zinc-800 transition cursor-pointer text-xs group"},[/*#__PURE__*/React.createElement("div",{key:"meta"},[/*#__PURE__*/React.createElement("div",{className:"font-bold text-slate-200 group-hover:text-teal-400"},proj.name),/*#__PURE__*/React.createElement("div",{className:"text-[10px] text-zinc-500 mt-0.5"},`Dung lượng: ${proj.size_mb} MB | Cập nhật: ${new Date(proj.updated_at*1000).toLocaleString()}`)]),/*#__PURE__*/React.createElement("div",{key:"actions",className:"flex items-center gap-1.5"},[/*#__PURE__*/React.createElement("button",{onClick:e=>{e.stopPropagation();handleOpenProject(proj.id);},className:"px-2.5 py-1 bg-teal-800/80 hover:bg-teal-700 text-teal-200 rounded font-semibold text-[10px]"},"MỞ"),/*#__PURE__*/React.createElement("button",{onClick:e=>handleDeleteProject(proj.id,e),className:"px-2 py-1 bg-rose-950/60 hover:bg-rose-900/80 text-rose-300 rounded font-semibold text-[10px]"},"XÓA")])]))])]:activeTab==='files'?[/*#__PURE__*/React.createElement("div",{key:"cleanup-header",className:"flex items-center justify-between bg-zinc-900/60 p-2.5 rounded border border-zinc-800 text-xs shrink-0 mb-3"},[/*#__PURE__*/React.createElement("span",{className:"text-zinc-400 text-[10px]"},"💡 Các tập tin không dùng trong dự án nào sẽ được đánh dấu 'Không dùng' và có thể xóa để giải phóng dung lượng."),/*#__PURE__*/React.createElement("button",{onClick:handleCleanUnusedFiles,className:"px-2.5 py-1 bg-rose-700 hover:bg-rose-600 text-white rounded font-bold text-[10px] uppercase flex items-center gap-1"},"🧹 Dọn dẹp tệp rác")]),loadingFiles?/*#__PURE__*/React.createElement("div",{key:"loading",className:"text-center py-8 text-xs text-zinc-500"},"Đang tải danh sách tập tin..."):filesList.length===0?/*#__PURE__*/React.createElement("div",{key:"empty",className:"text-center py-8 text-xs text-zinc-500"},"Chưa có tập tin nào tải lên hoặc tạo ra."):/*#__PURE__*/React.createElement("div",{key:"list",className:"space-y-1.5"},[filesList.map(file=>/*#__PURE__*/React.createElement("div",{key:file.file_id,className:"flex items-center justify-between p-3 bg-[#1e1e1e] rounded border border-zinc-800 text-xs"},[/*#__PURE__*/React.createElement("div",{key:"meta",className:"max-w-[70%]"},[/*#__PURE__*/React.createElement("div",{className:"font-semibold text-slate-300 truncate"},file.original_name||file.file_id),/*#__PURE__*/React.createElement("div",{className:"text-[10px] text-zinc-500 mt-0.5"},`Loại: ${file.type} | Dung lượng: ${file.size_mb} MB | Tạo lúc: ${new Date(file.created_at*1000).toLocaleString()}`)]),/*#__PURE__*/React.createElement("div",{key:"actions",className:"flex items-center gap-2"},[file.is_in_use?/*#__PURE__*/React.createElement("span",{className:"px-2 py-0.5 bg-emerald-950 text-emerald-400 border border-emerald-900 rounded text-[9px] uppercase font-bold font-mono"},"Đang dùng"):/*#__PURE__*/React.createElement("span",{className:"px-2 py-0.5 bg-zinc-850 text-zinc-400 border border-zinc-700 rounded text-[9px] uppercase font-bold font-mono"},"Không dùng"),!file.is_in_use&&/*#__PURE__*/React.createElement("button",{onClick:()=>handleDeleteFile(file.file_id),className:"px-2 py-0.5 bg-rose-950 hover:bg-rose-900 text-rose-300 rounded font-semibold text-[10px] border border-rose-900"},"Xóa")])]))])]:null)));};const SaveProjectModal=({isOpen,onClose,onSave})=>{if(!isOpen)return null;const[name,setName]=useState('');const handleSubmit=e=>{e.preventDefault();if(!name.trim())return;onSave(name.trim());onClose();};return/*#__PURE__*/React.createElement("div",{className:"fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm"},/*#__PURE__*/React.createElement("div",{className:"bg-[#262626] border border-[#383838] rounded-xl shadow-2xl w-full max-w-md p-6 text-slate-200"},/*#__PURE__*/React.createElement("h3",{className:"text-sm font-bold text-teal-400 mb-4 uppercase"},"Đặt tên dự án"),/*#__PURE__*/React.createElement("form",{onSubmit:handleSubmit,className:"space-y-4"},[/*#__PURE__*/React.createElement("input",{key:"name-input",type:"text",placeholder:"Nhập tên dự án...",required:true,value:name,onChange:e=>setName(e.target.value),className:"w-full bg-[#1e1e1e] border border-[#383838] rounded px-3 py-1.5 text-xs text-slate-200 focus:outline-none focus:border-teal-500 font-bold",autoFocus:true}),/*#__PURE__*/React.createElement("div",{key:"actions",className:"flex justify-end gap-2 text-xs"},[/*#__PURE__*/React.createElement("button",{key:"cancel",type:"button",onClick:onClose,className:"px-3 py-1.5 bg-zinc-800 hover:bg-zinc-700 text-zinc-300 rounded"},"Hủy"),/*#__PURE__*/React.createElement("button",{key:"save",type:"submit",className:"px-3 py-1.5 bg-teal-600 hover:bg-teal-500 text-white rounded font-semibold"},"Lưu")])])));};const SaveAsModal=({isOpen,onClose,projectName,onSaveCloud,onSaveLocal})=>{if(!isOpen)return null;const[name,setName]=useState(projectName||'');const[saveType,setSaveType]=useState('cloud');const handleSubmit=e=>{e.preventDefault();if(!name.trim())return;if(saveType==='cloud'){onSaveCloud(name.trim());}else{onSaveLocal(name.trim());}onClose();};return/*#__PURE__*/React.createElement("div",{className:"fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm"},/*#__PURE__*/React.createElement("div",{className:"bg-[#262626] border border-[#383838] rounded-xl shadow-2xl w-full max-w-md p-6 text-slate-200"},/*#__PURE__*/React.createElement("h3",{className:"text-sm font-bold text-teal-400 mb-4 uppercase"},"Lưu dưới tên khác (Save As...)"),/*#__PURE__*/React.createElement("form",{onSubmit:handleSubmit,className:"space-y-4"},[/*#__PURE__*/React.createElement("div",{key:"name-block"},[/*#__PURE__*/React.createElement("label",{className:"block text-[10px] text-zinc-400 uppercase font-bold mb-1"},"Tên dự án mới"),/*#__PURE__*/React.createElement("input",{type:"text",placeholder:"Nhập tên mới...",required:true,value:name,onChange:e=>setName(e.target.value),className:"w-full bg-[#1e1e1e] border border-[#383838] rounded px-3 py-1.5 text-xs text-slate-200 focus:outline-none focus:border-teal-500 font-bold",autoFocus:true})]),/*#__PURE__*/React.createElement("div",{key:"type-block"},[/*#__PURE__*/React.createElement("label",{className:"block text-[10px] text-zinc-400 uppercase font-bold mb-1.5"},"Phương thức lưu trữ"),/*#__PURE__*/React.createElement("div",{className:"grid grid-cols-2 gap-2 text-xs"},[/*#__PURE__*/React.createElement("button",{key:"btn-cloud",type:"button",onClick:()=>setSaveType('cloud'),className:`py-2 rounded border flex flex-col items-center gap-1 font-semibold transition ${saveType==='cloud'?'bg-teal-950/60 border-teal-500 text-teal-300':'bg-zinc-800 border-zinc-700 hover:bg-zinc-750 text-zinc-400'}`},[/*#__PURE__*/React.createElement("span",{key:"title"},"☁️ Lưu Cloud"),/*#__PURE__*/React.createElement("span",{key:"desc",className:"text-[9px] font-normal text-zinc-500"},"Lưu lên server cá nhân")]),/*#__PURE__*/React.createElement("button",{key:"btn-local",type:"button",onClick:()=>setSaveType('local'),className:`py-2 rounded border flex flex-col items-center gap-1 font-semibold transition ${saveType==='local'?'bg-teal-950/60 border-teal-500 text-teal-300':'bg-zinc-800 border-zinc-700 hover:bg-zinc-750 text-zinc-400'}`},[/*#__PURE__*/React.createElement("span",{key:"title"},"💾 Tải về máy (.sfs)"),/*#__PURE__*/React.createElement("span",{key:"desc",className:"text-[9px] font-normal text-zinc-500"},"Tải tệp JSON dự án về máy")])])]),/*#__PURE__*/React.createElement("div",{key:"actions",className:"flex justify-end gap-2 text-xs pt-2"},[/*#__PURE__*/React.createElement("button",{key:"cancel",type:"button",onClick:onClose,className:"px-3 py-1.5 bg-zinc-800 hover:bg-zinc-700 text-zinc-300 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MỚI":`SỬA PRESET: ${editingPreset.name}`),/*#__PURE__*/React.createElement("div",{className:"grid grid-cols-2 gap-3"},/*#__PURE__*/React.createElement("div",{className:"flex flex-col gap-1"},/*#__PURE__*/React.createElement("label",{className:"text-[10px] uppercase font-bold text-zinc-500"},"Tên Preset"),/*#__PURE__*/React.createElement("input",{type:"text",value:formName,onChange:e=>setFormName(e.target.value),className:"bg-zinc-900 border border-zinc-700 rounded px-2.5 py-1 text-xs outline-none focus:border-purple-600 text-zinc-200"})),/*#__PURE__*/React.createElement("div",{className:"flex flex-col gap-1"},/*#__PURE__*/React.createElement("label",{className:"text-[10px] uppercase font-bold text-zinc-500"},"Danh mục"),/*#__PURE__*/React.createElement("input",{type:"text",value:formCategory,onChange:e=>setFormCategory(e.target.value),className:"bg-zinc-900 border border-zinc-700 rounded px-2.5 py-1 text-xs outline-none focus:border-purple-600 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text-xs outline-none focus:border-purple-600 text-zinc-200"})),/*#__PURE__*/React.createElement("div",{className:"flex flex-col gap-1"},/*#__PURE__*/React.createElement("label",{className:"text-[10px] uppercase font-bold text-zinc-500"},"BPM mặc định"),/*#__PURE__*/React.createElement("input",{type:"number",value:formBpm,onChange:e=>setFormBpm(e.target.value),className:"bg-zinc-900 border border-zinc-700 rounded px-2.5 py-1 text-xs outline-none focus:border-purple-600 text-zinc-200"})),/*#__PURE__*/React.createElement("div",{className:"flex flex-col gap-1"},/*#__PURE__*/React.createElement("label",{className:"text-[10px] uppercase font-bold text-zinc-500"},"Âm giai (Scale) mặc định"),/*#__PURE__*/React.createElement("input",{type:"text",value:formScale,onChange:e=>setFormScale(e.target.value),className:"bg-zinc-900 border border-zinc-700 rounded px-2.5 py-1 text-xs outline-none focus:border-purple-600 text-zinc-200"}))),/*#__PURE__*/React.createElement("div",{className:"flex flex-col 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Preset")))),/*#__PURE__*/React.createElement("div",{className:"p-4 border-t border-zinc-800 flex justify-end shrink-0 bg-[#202024]"},/*#__PURE__*/React.createElement("button",{onClick:()=>{setEditingPreset(null);onClose();},className:"px-4 py-1.5 bg-zinc-800 hover:bg-zinc-700 text-zinc-300 border border-zinc-700 rounded text-xs font-bold shadow transition"},"Đóng"))));};const PianoRollTabEditor=({st,zoom,bpm,viewportWidth,onClose,onUpdateNotes,onSaveNotes,setSubTabs,onPlayPause,onStop,isPlaying,playPreviewNote,showToast})=>{const[activeRollTool,setActiveRollTool]=React.useState('pen');const[snapVal,setSnapVal]=React.useState('1/16');const[ccMode,setCcMode]=React.useState('velocity');const[rollZoom,setRollZoom]=React.useState(60);// local horizontal zoom factor
 const canvasRef=React.useRef(null);const ccCanvasRef=React.useRef(null);const ccWrapperRef=React.useRef(null);const gridScrollRef=React.useRef(null);const keybedRef=React.useRef(null);const keybedMouseDownRef=React.useRef(false);const rulerScrollRef=React.useRef(null);React.useEffect(()=>{const up=()=>{keybedMouseDownRef.current=false;};window.addEventListener('mouseup',up);return()=>window.removeEventListener('mouseup',up);},[]);const NoteHeight=18;const PITCH_START=0;// C0 (render all 128 keys)
 const KeybedPixelHeight=(128-PITCH_START)*NoteHeight;const pixelsPerBeat=rollZoom;const timeSigNum=4;const noteMaxBeat=(st.notes||[]).reduce((max,n)=>Math.max(max,(n.start_beat||0)+(n.duration_beats||1)),0);const[selectionMarquee,setSelectionMarquee]=React.useState(null);// { startBeat, startPitch, currentBeat, currentPitch }
 const[draggedNote,setDraggedNote]=React.useState(null);// { mode: 'move'|'resize', idx, startOffsetBeat, originalStart }