fix crash bridge khi đổi SF→VSTi đang play: silence same-plugin theo path MỚI trước assign() (createInstance) — track restore giữ cùng DLL process song song audio loop = 2 threads 1 DLL Nexus crash; không tự mở GUI khi đang play (C++ mute channel tới khi đóng GUI → tắt âm)

app/static/js/app.precompiled.js

@@ -809,7 +809,11 @@ if(isSf&&window.__bridgeLoadedChannels)delete window.__bridgeLoadedChannels[bch]
 // phải gửi lại program change để ra ĐÚNG instrument.
 if(ok&&window.__bridgeLastProgram){const _pfx=trackId+':';Object.keys(window.__bridgeLastProgram).forEach(k=>{if(k.indexOf(_pfx)===0)delete window.__bridgeLastProgram[k];});}if(ok){if(!window.__bridgeLoadedChannels)window.__bridgeLoadedChannels={};window.__bridgeLoadedChannels[bch]=true;}if(ok&&btype==='VST3'&&p){try{if(!window.__bridgePluginPaths)window.__bridgePluginPaths={};window.__bridgePluginPaths[instrumentId]=p;updateActiveTracks(prev=>prev.map(t=>t.id===trackId?{...t,synth_engine:{...(t.synth_engine||{}),plugin_path:p}}:t));}catch(e){}}// Requirement 2: chọn VST3 qua nút Synth → load xong mở native GUI
 // (C++ attach editor vào cửa sổ bridge tự tạo — control type=4, hwnd=0).
-if(ok&&btype==='VST3'&&window.NativeBridgeService.openNativeGUI){try{await openVstGuiRetry(instrumentId,bch,20);}catch(e){}}}})();};const setTrackInstrumentWithProgram=(trackId,instrumentId,programNumber,displayName,bankNumber)=>{const isSfInstrument=instrumentId&&typeof instrumentId==='string'&&instrumentId.startsWith('sf_');const sfBank=bankNumber!==undefined?bankNumber:isSfInstrument?0:undefined;const sfProg=programNumber!==undefined?programNumber:undefined;var mt=activeTracksRef.current||tracks;var curTrk=null;for(var ci=0;ci<mt.length;ci++){if(mt[ci].id===trackId){curTrk=mt[ci];break;}}// ── Unload Carla bridge khi chuyển từ VSTi sang instrument KHÔNG phải VST ──
+// SF→VSTi BUG 2026-08-13: GUI mở → C++ mute channel tới khi đóng GUI →
+// đang play thì âm tắt ngay (reloading_=true, note-on drop). Khi đang
+// play chỉ load instrument im lặng; GUI mở qua nút GUI riêng
+// (ensureAndOpenVstGui) — không tự mở giữa lúc phát.
+if(ok&&btype==='VST3'&&!isPlayingRef.current&&window.NativeBridgeService.openNativeGUI){try{await openVstGuiRetry(instrumentId,bch,20);}catch(e){}}}})();};const setTrackInstrumentWithProgram=(trackId,instrumentId,programNumber,displayName,bankNumber)=>{const isSfInstrument=instrumentId&&typeof instrumentId==='string'&&instrumentId.startsWith('sf_');const sfBank=bankNumber!==undefined?bankNumber:isSfInstrument?0:undefined;const sfProg=programNumber!==undefined?programNumber:undefined;var mt=activeTracksRef.current||tracks;var curTrk=null;for(var ci=0;ci<mt.length;ci++){if(mt[ci].id===trackId){curTrk=mt[ci];break;}}// ── Unload Carla bridge khi chuyển từ VSTi sang instrument KHÔNG phải VST ──
 // (soundfont/GM/default). Nếu không, Carla vẫn chạy với VSTi cũ → MIDI vẫn
 // play qua Carla bridge (âm sai instrument + âm kẹt không dừng được).
 try{const _hasInst=!!instrumentId;const _wasVst=curTrk&&curTrk.synth_engine&&String(curTrk.synth_engine.type||'').indexOf('vst')!==-1;const _nowVst=_hasInst&&!isSfInstrument;if(_wasVst&&!_nowVst&&window.SonicCarlaMidi&&window.SonicCarlaMidi.stopBridge){window.SonicCarlaMidi.stopBridge();try{if(window.SonicMidiRouter)window.SonicMidiRouter.panic();else if(window.SonicSF&&window.SonicSF.stopAll)window.SonicSF.stopAll();}catch(e){}stopAllNativeSfNotes();console.log('[Instrument] Carla bridge unloaded — track',trackId,'switched from VSTi to non-VST');}}catch(e){console.warn('[Instrument] carla-stop on instrument switch error:',e);}var mch=curTrk?assignTrackMidiChannel(curTrk,mt):sfBank===128?9:0;updateActiveTracks(prev=>prev.map(t=>{if(t.id!==trackId)return t;const hasInstrument=!!instrumentId;const instrType=isSfInstrument?'soundfont':hasInstrument?'vst3':'default';const synthEngine=hasInstrument?{type:instrType,plugin_id:instrumentId,soundfont_bank:sfBank!==undefined?sfBank:0,soundfont_program:sfProg!==undefined?sfProg:0,soundfont_id:isSfInstrument?instrumentId.replace('sf_',''):''}:undefined;return{...t,midiChannel:mch,instrumentId,instrumentProgram:sfProg,instrumentName:displayName,soundfont_bank:sfBank,soundfont_program:sfProg,synth_engine:synthEngine,type:hasInstrument?'MIDI':t.type==='MIDI'?'audio':t.type};}));setInstrumentDropdownTrackId(null);setInstrumentDropdownBtnRect(null);setSynthCategory(null);// Trigger FluidSynth load + program change when soundfont instrument selected