fix crash daw_vst_bridge khi đóng editor Nexus đang play: reload instance trong close job + silence same-plugin quanh createInstance/createView

native_bridge/include/INativeInstrument.h

@@ -41,6 +41,11 @@ public:
     // inside processAudioBlock on the same instance).
     virtual bool needsReload() const { return false; }
     virtual void setReloading(bool /*on*/) {}
+    // VST3: rebuild the plugin instance (terminate + loadPlugin) on the owning
+    // apartment thread. The bridge calls it after tearing an editor down so the
+    // audio loop never processes an instance whose editor was dropped without
+    // view->removed(). Non-VST engines: no-op.
+    virtual bool reload() { return true; }
     // VST3: split openGUI so instance teardown/reload runs on the owning
     // apartment thread while view->attached() may run on a temporary thread
     // with the channel worker pumping messages (see bridge main.cpp).

native_bridge/include/Vst3Instrument.h

@@ -29,6 +29,7 @@ public:
     bool attachView(void* parentWindowHandle) override;
     bool hasAttachedView() const override;
     void closeGUI() override;
+    bool reload() override;
     void setChannel(uint32_t ch) { channel_ = ch; }
     bool needsReload() const override { return hasAttachedOnce_ && !guiAttached_; }
     void setReloading(bool on) override { reloading_ = on; }
@@ -45,7 +46,6 @@ private:
     bool hasAttachedOnce_;
     bool reloading_; // guarded by InstrumentEngineManager::mu_ (set via setReloading)
     uint32_t channel_ = 0;
-    bool reload();
 };
 
 #endif // VST3_INSTRUMENT_H