G3 deploy: mac dinh dung JUCE bridge + bundle juce_fx_bridge vao engine

app/core/fx_realtime.py

@@ -26,7 +26,7 @@ import uuid
 import numpy as np
 
 from app.config import settings
-from app.core.native_render import find_fx_bridge_exe
+from app.core.native_render import find_fx_bridge_exe, find_juce_fx_bridge_exe
 
 FXRT_MAGIC = 0x46585254
 FXRT_BLOCK = 256
@@ -164,9 +164,11 @@ class FxRealtimeSession:
 
     def _spawn(self):
         juce_exe = os.getenv("SF_JUCE_FX_BRIDGE_PATH", "").strip()
-        exe = juce_exe or find_fx_bridge_exe()
+        # G3: mặc định dùng JUCE bridge (latency graph thật + processed samples);
+        # fallback bridge cũ khi không có exe JUCE (regression an toàn).
+        exe = juce_exe or find_juce_fx_bridge_exe() or find_fx_bridge_exe()
         if not exe:
-            raise RuntimeError("Không tìm thấy fx_vst_bridge.exe")
+            raise RuntimeError("Không tìm thấy bridge exe (juce_fx_bridge / fx_vst_bridge)")
         job = {
             "sample_rate": self.sample_rate,
             "block_size": self.block_size,
@@ -176,7 +178,7 @@ class FxRealtimeSession:
         fd, self._job_path = tempfile.mkstemp(suffix=".json", prefix="fxrt_")
         with os.fdopen(fd, "w", encoding="utf-8") as f:
             json.dump(job, f)
-        if juce_exe:
+        if os.path.basename(exe).lower().startswith("juce_fx_bridge"):
             cmd = [exe, "--juce-fx", self._job_path, "--shm", self.name,
                    "--parent", str(os.getpid())]
         else:

app/core/native_render.py

@@ -20,6 +20,7 @@ from app.config import settings
 
 BRIDGE_EXE = "daw_vst_bridge.exe" if os.name == "nt" else "daw_vst_bridge"
 FX_BRIDGE_EXE = "fx_vst_bridge.exe" if os.name == "nt" else "fx_vst_bridge"
+JUCE_FX_BRIDGE_EXE = "juce_fx_bridge.exe" if os.name == "nt" else "juce_fx_bridge"
 
 
 def find_bridge_exe(exe_name=BRIDGE_EXE, env_key="SF_BRIDGE_PATH") -> str:
@@ -60,6 +61,10 @@ def find_bridge_exe(exe_name=BRIDGE_EXE, env_key="SF_BRIDGE_PATH") -> str:
 def find_fx_bridge_exe() -> str:
     """Đường dẫn FX bridge (fx_vst_bridge.exe): SF_FX_BRIDGE_PATH → bundle → install/."""
     return find_bridge_exe(FX_BRIDGE_EXE, "SF_FX_BRIDGE_PATH")
+
+def find_juce_fx_bridge_exe() -> str:
+    """Đường dẫn FX bridge JUCE (juce_fx_bridge.exe): SF_JUCE_FX_BRIDGE_PATH → bundle → install/."""
+    return find_bridge_exe(JUCE_FX_BRIDGE_EXE, "SF_JUCE_FX_BRIDGE_PATH")
 def normalize_audio_peak(audio, target_db=0.0):
     """Scale audio (numpy array, peak) về target_db nếu vượt; giữ nguyên nếu dưới.