Update app.py

app.py

@@ -176,14 +176,13 @@ def build_piper_cmd(
         *PIPER_CMD,
         "-m", str(vc["model"]),
         "-c", str(vc["config"]),
-        "-q",
-        "--length_scale", str(length_scale),
-        "--noise_scale",  str(noise_scale),
-        "--noise_w",      str(noise_w),
+        "--length-scale", str(length_scale),
+        "--noise-scale",  str(noise_scale),
+        "--noise-w",      str(noise_w),
     ]
     if to_stdout:
         # Stream RAW PCM (16-bit little-endian)
-        cmd += ["--raw", "-f", "-"]
+        cmd += ["-f", "-", "--output-raw"]
     else:
         if out_path is None:
             raise ValueError("out_path required when to_stdout=False")
@@ -283,6 +282,14 @@ def health():
             cfg  = child / f"{name}.onnx.json"
             if _file_ok(base, MIN_ONNX_BYTES) and _file_ok(cfg, MIN_JSON_BYTES):
                 voices.append({"id": name, "sr": _read_sr_from_cfg(cfg)})
+    # optional environment versions
+    try:
+        import numpy, onnxruntime as ort
+        numpy_version = numpy.__version__
+        onnxruntime_version = ort.__version__
+    except Exception:
+        numpy_version = onnxruntime_version = None
+
     return {
         "ok": True,
         "engine": "piper-tts (CLI, CPU)",
@@ -290,6 +297,8 @@ def health():
         "voice_dir": str(VOICES_DIR),
         "available_voices": voices,
         "files_dir": str(FILES_DIR),
+        "numpy": numpy_version,
+        "onnxruntime": onnxruntime_version,
     }
 
 @app.get("/")