fix(backend): find_bridge_exe frozen onedir thieu exe_dir candidate - bridge sidecar nam canh app root ngoai _MEIPASS lam list_fx tra rong (Mastering/FX Rack khong load VST duoc); mirror logic runtime._vst_render_available

app/core/native_render.py

@@ -32,6 +32,13 @@ def find_bridge_exe() -> str:
         if root:
             cands += [os.path.join(root, "binaries", BRIDGE_EXE),
                       os.path.join(root, BRIDGE_EXE)]
+        # PyInstaller onedir: daw_engine.exe nam <app_root>/daw_engine/, bridge
+        # sidecar nam canh app root (khong trong _MEIPASS) - tim ca exe_dir.
+        exe_dir = os.path.dirname(os.path.abspath(sys.executable))
+        cands += [os.path.join(exe_dir, "binaries", BRIDGE_EXE),
+                  os.path.join(exe_dir, BRIDGE_EXE),
+                  os.path.join(os.path.dirname(exe_dir), "binaries", BRIDGE_EXE),
+                  os.path.join(os.path.dirname(exe_dir), BRIDGE_EXE)]
     cands.append(os.path.join(settings.BASE_DIR, "install", BRIDGE_EXE))
     for p in cands:
         if p and os.path.isfile(p):

app/core/runtime.py

@@ -381,7 +381,16 @@ def _vst_render_available() -> bool:
     if env and os.path.isfile(env):
         return True
     exe = "daw_vst_bridge.exe" if os.name == "nt" else "daw_vst_bridge"
-    return os.path.isfile(os.path.join(settings.BASE_DIR, "install", exe))
+    if os.path.isfile(os.path.join(settings.BASE_DIR, "install", exe)):
+        return True
+    # Frozen onedir: bridge sidecar nam canh app root (ngoai _MEIPASS)
+    if getattr(sys, "frozen", False):
+        exe_dir = os.path.dirname(os.path.abspath(sys.executable))
+        for cand in (os.path.join(exe_dir, exe),
+                     os.path.join(os.path.dirname(exe_dir), exe)):
+            if os.path.isfile(cand):
+                return True
+    return False
 
 
 def _lan_info() -> dict: