FEAT: cài đặt các thư viện để chuẩn bị build exe trên window

app/core/vst_engine.py

@@ -216,6 +216,19 @@ class PluginManager:
     def load_vst(self, plugin_name: str, preset_data: dict = None):
         if not HAS_PEDALBOARD:
             return None
+        # Ưu tiên PATH trực tiếp (spec desktop 2026-08-08: synth_engine.plugin_path)
+        if plugin_name and (plugin_name.endswith(".vst3") or plugin_name.endswith(".so")
+                            or plugin_name.endswith(".component") or "/" in plugin_name or "\\" in plugin_name):
+            if os.path.exists(plugin_name):
+                vst = VST3Plugin(plugin_name)
+                if preset_data:
+                    for k, v in preset_data.items():
+                        try:
+                            setattr(vst, k, v)
+                        except Exception:
+                            pass
+                return vst
+            return None
         plugins = self._scan_plugins()
         if plugin_name not in plugins:
             return None
@@ -305,8 +318,9 @@ class PluginManager:
     def list_available(self) -> dict:
         return {
             "vst_instruments": [
-                {"id": k, "name": k, "type": "VST3", "has_native_support": HAS_PEDALBOARD}
-                for k in self._scan_plugins().keys()
+                {"id": "vst3_" + k.lower().replace(" ", "_"), "name": k, "type": "VST3",
+                 "path": p, "has_native_support": HAS_PEDALBOARD}
+                for k, p in self._scan_plugins().items()
             ],
             "soundfonts": self._scan_soundfonts()
         }