G0.3: watchdog giu 15s khi attach-in-flight (SHM flag) + RAII guard trong attach job (fix kill nham khi GUI mo)

native_bridge/src/main.cpp

@@ -940,6 +940,14 @@ int main(int argc, char* argv[]) {
     // a window on a worker whose pump is idle during jobs hangs
     // view->attached() (gui_probe: two_workers_close TIMEOUT). The attach
     // job runs on the channel worker (COM STA apartment stays alive).
+    // G0.3: while an attach job is in flight, tell the Tauri watchdog via
+    // SHM so a long Nexus reload/attach (can exceed 3s) is not mistaken
+    // for a dead bridge and killed. RAII -> cleared on every exit path.
+    struct AttachInFlightGuard {
+        SharedAudioBufferIPC* ipc;
+        explicit AttachInFlightGuard(SharedAudioBufferIPC* p) : ipc(p) { if (ipc) ipc->attachInFlight = 1; }
+        ~AttachInFlightGuard() { if (ipc) ipc->attachInFlight = 0; }
+    };
     auto handleOpenGui = [&](uint32_t guiCh, uintptr_t arg1, const std::string& pluginId) {
         if (!instruments.get(guiCh)) {
             std::cerr << "[NativeBridge] GUI deferred ch=" << guiCh
@@ -1029,7 +1037,8 @@ int main(int argc, char* argv[]) {
                 instruments.setReloading(guiCh, true);
             }
         }
-        workers[guiCh]->post([&instruments, guiCh, hwnd, arg2 = pluginId]() {
+        workers[guiCh]->post([&instruments, shmIPC, guiCh, hwnd, arg2 = pluginId]() {
+            AttachInFlightGuard _aifGuard{shmIPC};
             if (!instruments.get(guiCh)) {
                 std::cerr << "[NativeBridge] GUI attach FAILED hwnd=" << hwnd
                           << " plugin=" << arg2 << " ch=" << guiCh << " (no instrument loaded)" << std::endl;