fix(db): prefer postgres config in production refs NOISSUE

ai_software_factory/main.py

@@ -13,6 +13,7 @@ The NiceGUI frontend provides:
 
 from __future__ import annotations
 
+from contextlib import asynccontextmanager
 import json
 import re
 from pathlib import Path
@@ -42,7 +43,18 @@ except ImportError:
 
     __version__ = "0.0.1"
 
-app = FastAPI()
+
+@asynccontextmanager
+async def lifespan(_app: FastAPI):
+    """Log resolved runtime configuration when the app starts."""
+    runtime = database_module.get_database_runtime_summary()
+    print(
+        f"Runtime configuration: database_backend={runtime['backend']} target={runtime['target']}"
+    )
+    yield
+
+
+app = FastAPI(lifespan=lifespan)
 
 DbSession = Annotated[Session, Depends(database_module.get_db)]
 PROJECT_ID_PATTERN = re.compile(r"[^a-z0-9]+")
@@ -180,7 +192,7 @@ def health_check():
     """Health check endpoint."""
     return {
         'status': 'healthy',
-        'database': 'sqlite' if database_module.settings.USE_SQLITE else 'postgresql',
+        'database': 'sqlite' if database_module.settings.use_sqlite else 'postgresql',
     }