fix: snap default '1' + Power button reads masterConnected directly

- snapValue default '1' (was 'free'), piano roll snapVal default '1' (was '1/16')
- Power button: remove shared isFxActive, use masteringSettings.masterConnected

app/static/js/app.jsx

@@ -989,18 +989,16 @@ const MasterStripConsole = ({ masterVolume, setMasterVolume, showMasteringModal,
         ),
         React.createElement("button", {
           id: "fxBtn",
-          className: "btn-daw h-[18px] rounded font-extrabold text-[10px] transition-all" + (isFxActive ? " btn-teal-active" : ""),
+          className: "btn-daw h-[18px] rounded font-extrabold text-[10px] transition-all",
           onClick: function() { setShowMasteringModal(true); },
           title: "Mở MASTERING PANEL để chỉnh sửa"
         }, "FX"),
         React.createElement("button", {
           id: "powerBtn",
-          className: "btn-daw h-[18px] rounded text-xs transition-all" + (isFxActive ? " btn-teal-active" : ""),
+          className: "btn-daw h-[18px] rounded text-xs transition-all" + (isMasterActive ? " btn-teal-active" : ""),
           onClick: function() {
-            var newActive = !isFxActive;
-            setIsFxActive(newActive);
             if (setMasteringSettings) {
-              setMasteringSettings(function(prev) { return Object.assign({}, prev, { isBypassed: !newActive, masterConnected: newActive }); });
+              setMasteringSettings(function(prev) { return Object.assign({}, prev, { isBypassed: prev.masterConnected ? false : true, masterConnected: !prev.masterConnected }); });
             }
           },
           title: "Bật/Tắt MASTERING PANEL Bypass"
@@ -5789,7 +5787,7 @@ Ví dụ: Nhạc phim epic, dàn nhạc giao hưởng, tempo 130 BPM, giọng Cm
 
 const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, activeTracks, onClose, onUpdateNotes, onSaveNotes, setSubTabs, onPlayPause, onStop, isPlaying, playPreviewNote, showToast, midiDevices, recordingState, recTempMidiNotes, onRecord, selectedMidiInputId, onMidiInputSelect, activeMidiPitches, onInstrumentSelect, onRescheduleMidi, onSeekPlayhead }) => {
   const [activeRollTool, setActiveRollTool] = React.useState('select');
-  const [snapVal, setSnapVal] = React.useState('1/16');
+  const [snapVal, setSnapVal] = React.useState('1');
   const [ccMode, setCcMode] = React.useState('velocity');
   const [rollZoom, setRollZoom] = React.useState(60); // local horizontal zoom factor
   const [aiBarStart, setAiBarStart] = React.useState(0);
@@ -9043,7 +9041,7 @@ const App = () => {
     }
   };
   const [activeTool, setActiveTool] = useState('select'); // 'select' | 'grab' | 'razor'
-  const [snapValue, setSnapValue] = useState('free'); // 'free', '1', '1/2', '1/4', '1/8', '1/16', '1/32'
+  const [snapValue, setSnapValue] = useState('1'); // 'free', '1', '1/2', '1/4', '1/8', '1/16', '1/32'
 
   const snapTime = (time, snapVal, bpmVal) => {
     if (snapVal === 'free') return time;

wiki.md

@@ -849,6 +849,12 @@
 - **Các file ảnh hưởng:** `app/templates/index.html`, `app/static/js/app.jsx`
 - **Ghi chú/Test (nếu có):** `npm run build` — build passes.
 
+### [2026-07-30 20:58] Task: Fix snap default + Power button mastering bypass
+- **Tóm tắt thay đổi:** (1) snapValue mặc định `'1'` (thay `'free'`), snapVal PIANO_ROLL mặc định `'1'` (thay `'1/16'`); (2) Power button trong MasterStripConsole: bỏ `isFxActive` local state dùng chung sai với FX button, đọc `masteringSettings.masterConnected` trực tiếp → toggle `masterConnected` + set `isBypassed` tương ứng.
+- **Các file ảnh hưởng:** `app/static/js/app.jsx`, `app/static/js/app.precompiled.js`
+- **Ghi chú/Test (nếu có):** `npm run build` pass. Load project → snap = 1. Mixer → Power button → mastering bật/tắt đúng.
+---
+
 ### [2026-07-30 20:52] Task: Fix audio clip items lost after reload
 - **Tóm tắt thay đổi:** 3 root causes: (1) `serverFileId` không được lưu vào clip/track khi upload audio — `insertSoundClipAtCursor` gọi `uploadToServer` nhưng chỉ lưu vào global `serverFileIdMap`, không set `t.serverFileId`; (2) Serialize dùng `t.serverFileId` (null) → `audio_file_url` rỗng → Deserialize không lấy được fileId → `loadAudioBuffersForTracks` không load được buffer; (3) WaveformLane canvas `clip.buffer.numberOfChannels` crash khi buffer null → clip items không vẽ được. Fix: set `serverFileId` trên clip + track khi upload; serialize/deserialize `server_file_id` trong `source_data`; guard `if (!clip.buffer) return` trong WaveformLane.
 - **Các file ảnh hưởng:** `app/static/js/app.jsx`, `app/static/js/app.precompiled.js`