Add VOICE_CONFIG env var to select the voice pipeline config file.

Defaults to config/voice.json; relative paths resolve from project root.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/voice/config.py

@@ -1,11 +1,30 @@
 from __future__ import annotations
 
 import json
+import os
 from dataclasses import dataclass, field
 from pathlib import Path
 
+from dotenv import load_dotenv
+
+load_dotenv()
+
 PROJECT_ROOT = Path(__file__).resolve().parent.parent.parent
-DEFAULT_VOICE_CONFIG = PROJECT_ROOT / "config" / "voice.json"
+DEFAULT_VOICE_CONFIG_REL = "config/voice.json"
+
+
+def resolve_voice_config_path() -> Path:
+    """Return the voice config path from VOICE_CONFIG or the default."""
+    configured = os.getenv("VOICE_CONFIG", DEFAULT_VOICE_CONFIG_REL).strip()
+    if not configured:
+        configured = DEFAULT_VOICE_CONFIG_REL
+    path = Path(configured)
+    if not path.is_absolute():
+        path = PROJECT_ROOT / path
+    return path
+
+
+DEFAULT_VOICE_CONFIG = resolve_voice_config_path()
 
 
 @dataclass(frozen=True)
@@ -143,7 +162,7 @@ class EngineConfig:
 
 
 def load_config(path: str | Path | None = None) -> EngineConfig:
-    config_path = Path(path) if path is not None else DEFAULT_VOICE_CONFIG
+    config_path = Path(path) if path is not None else resolve_voice_config_path()
     if not config_path.is_absolute():
         config_path = PROJECT_ROOT / config_path
     data = json.loads(config_path.read_text(encoding="utf-8"))