Create config.py for project configuration

src/reachy_mini_conversation_demo/config.py

@@ -0,0 +1,29 @@
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+
+def getenv_bool(key: str, default: bool = False) -> bool:
+    """Read env var as a Python bool (case-insensitive)."""
+    val = os.getenv(key)
+    if val is None:
+        return default
+    return val.strip().lower() in {"true", "1", "yes", "on"}
+
+
+class Config:
+    # Required
+    OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
+    if not OPENAI_API_KEY:
+        raise RuntimeError("OPENAI_API_KEY is missing in .env")
+
+    # Optional
+    MODEL_NAME = os.getenv("MODEL_NAME", "gpt-4o-realtime-preview")
+    SIM = getenv_bool("SIM", False)
+    LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO").upper()
+    SAMPLE_RATE = int(os.getenv("SAMPLE_RATE", "24000"))
+    VISION_ENABLED = getenv_bool("VISION_ENABLED", False)
+    HEAD_TRACKING = getenv_bool("HEAD_TRACKING", False)
+
+config = Config()