feat: saxo connector

backend/main.py

@@ -1,5 +1,10 @@
+import os
+from pathlib import Path
 from dotenv import load_dotenv
-load_dotenv()
+# Explicit path: don't rely on the process's current working directory (a systemd
+# unit, pm2, or a launcher script may start uvicorn from somewhere other than
+# backend/), otherwise .env silently fails to load and SAXO_APP_KEY/SECRET stay unset.
+load_dotenv(dotenv_path=Path(__file__).resolve().parent / ".env")
 
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
@@ -27,7 +32,6 @@ from routers import strategy_builder as strategy_builder_router
 from routers import saxo_oauth as saxo_oauth_router
 from routers import saxo as saxo_router
 from services.database import init_db, get_config, cleanup_stale_running_cycles
-import os
 import logging
 import uvicorn