wip walkthrough 2 bridge: jobEvent_/MsgWaitForMultipleObjects pump, SetThreadPriority + PowerThrottling, isBypassed silence quanh assign/unload, closeGUI view->removed(), reloadForGUI reuse instance, bo mute khi GUI mo, CoInitializeEx MTA — CHƯA verified: driver test 1/3 PASS (AV c0000005 Nexus!GetPluginFactory luc attachView ch5, nghi MTA/bo mute), exe deploy giu ban 0cec3d3 (28104a47)

native_bridge/include/INativeInstrument.h

@@ -51,6 +51,7 @@ public:
     // with the channel worker pumping messages (see bridge main.cpp).
     virtual bool reloadForGUI() { return true; }
     virtual bool attachView(void* /*parentWindowHandle*/) { return false; }
+    virtual void resizeView(int /*w*/, int /*h*/) {}
     // True while the editor view is attached (GUI window open). The bridge uses
     // it to dedupe repeated OPEN_GUI (frontend retry spam) — re-attaching a
     // view that is already attached corrupts plugins (Nexus createView→null).

native_bridge/include/NativeInstrumentEngine.h

@@ -12,6 +12,7 @@
 #include <memory>
 #include <string>
 #include <vector>
+#include <atomic>
 
 // FluidSynth (.sf2 / .sf3)
 class FluidSynthInstrument : public INativeInstrument {
@@ -119,6 +120,9 @@ public:
 
     size_t count() const { std::lock_guard<std::mutex> lock(mu_); return channels_.size(); }
 
+    void setBypassed(bool on) { isBypassed_.store(on); }
+    bool isBypassed() const { return isBypassed_.load(); }
+
 private:
     static std::unique_ptr<INativeInstrument> create_instrument(InstrumentType type);
 
@@ -134,6 +138,7 @@ private:
     // compare inside -- Windows plugin paths are case-insensitive.
     bool channelQuiet(uint32_t ch) const;
     std::function<bool(const std::string&)> editorOpenFn_;
+    std::atomic<bool> isBypassed_{false};
 };
 
 #endif // NATIVE_INSTRUMENT_ENGINE_H

native_bridge/include/Vst3Instrument.h

@@ -27,6 +27,7 @@ public:
     bool openGUI(void* parentWindowHandle) override;
     bool reloadForGUI() override;
     bool attachView(void* parentWindowHandle) override;
+    void resizeView(int w, int h) override;
     bool hasAttachedView() const override;
     void closeGUI() override;
     bool reload() override;