V45.6 fix solo Q3: bo stopAllPlayback+restart 60ms khi solo main-session (track solo giu nguyen tieng, het wobble re-attack); GIU timelinePitchesRef qua stop - kill branch NOTE_OFF tung pitch (Qin im khi solo track khac, truoc day tset=0); C++ allNotesOff sandbox VST2 qua control 7 (child panic local CC64/CC123+128 noteOff) thay 128 note-off flood queue 64-cap (Qin het treo sau STOP); IPC toggleSolo tu applyAllTrackMuteSolo (ref patch + kill); v=202608292138

native_bridge/src/NativeInstrumentEngine.cpp

@@ -483,7 +483,7 @@ void InstrumentEngineManager::allNotesOff() {
     std::lock_guard<std::mutex> lock(mu_);
     for (auto& [ch, inst] : channels_) {
         if (channelQuiet(ch)) continue;  // mid-rebuild / editor open: do not touch the instance
-        for (uint32_t n = 0; n < 128; ++n) inst->noteOff(ch, n, 0);
+        inst->allNotesOff(ch);
     }
 }
 

native_bridge/src/SandboxVst2Host.cpp

@@ -228,6 +228,12 @@ void SandboxVst2Host::pitchBend(uint32_t channel, uint32_t bend14) {
                    (uint8_t)(bend14 & 0x7F), (uint8_t)((bend14 >> 7) & 0x7F));
 }
 
+void SandboxVst2Host::allNotesOff(uint32_t /*channel*/) {
+    if (!alive_.load() || !ipc_) return;
+    std::cerr << "[Vst2Sandbox] ALL_NOTES_OFF ch=" << channel_ << std::endl;
+    pushControl(7);  // plugin_host panics locally - no 64-cap MIDI flood
+}
+
 bool SandboxVst2Host::openGUI(void* parentWindowHandle) {
     (void)parentWindowHandle;  // child owns its window
     if (!alive_.load() || !ipc_) return false;

native_bridge/src/SandboxVst2Host.h

@@ -33,6 +33,10 @@ public:
     void controlChange(uint32_t channel, uint32_t cc, uint32_t value) override;
     void programChange(uint32_t channel, uint32_t program) override;
     void pitchBend(uint32_t channel, uint32_t bend14) override;
+    // Control 7 (ALL_NOTES_OFF): the child runs the local panic
+    // (CC64/CC123 + 128 note-offs) - a 128-note MIDI sweep would
+    // overflow the child's 64-cap queue and Qin would keep ringing.
+    void allNotesOff(uint32_t channel) override;
     // The child owns its GUI window (plugin_host opens it on OPEN_GUI control).
     bool openGUI(void* parentWindowHandle) override;
     bool canOpenGUI() const override { return true; }

native_bridge/src/plugin_host_main.cpp

@@ -269,6 +269,15 @@ int main(int argc, char* argv[]) {
                     if (g_hostHwnd) ShowWindow(g_hostHwnd, SW_HIDE);
                 } else if (c.type == 6) {
                     quit = true;
+                } else if (c.type == 7) { // ALL_NOTES_OFF: runtime panic (STOP/solo)
+                    panicAfterPreset();
+                    // absorb the panic-mutated chunk so the ~2s periodic
+                    // republish never overwrites presetOut with it
+                    inst.captureState();
+                    std::string postPanic = inst.serializeState();
+                    if (!postPanic.empty()) lastOut = postPanic;
+                    printf("[plugin_host] ALL_NOTES_OFF ch=%u\n", channel);
+                    fflush(stdout);
                 }
             }
             ipc->base.controlQueueCount = 0;