Fix relative imports for HF Spaces

server/SmartPayEnv_environment.py

@@ -20,10 +20,13 @@ from openenv.core.env_server.interfaces import Environment
 
 try:
     from ..models import SmartpayenvAction, SmartpayenvObservation
-except ImportError:
+except (ImportError, ValueError):
     from models import SmartpayenvAction, SmartpayenvObservation
 
-from .graders import RoutingEfficacyGrader, FraudDetectionGrader, UserRetentionGrader
+try:
+    from .graders import RoutingEfficacyGrader, FraudDetectionGrader, UserRetentionGrader
+except (ImportError, ValueError):
+    from server.graders import RoutingEfficacyGrader, FraudDetectionGrader, UserRetentionGrader
 
 
 # ── Configuration Constants ────────────────────────────────────────────

server/app.py

@@ -38,9 +38,11 @@ except Exception as e:  # pragma: no cover
 from fastapi.responses import RedirectResponse
 
 try:
+    # Try package-style relative import
     from ..models import SmartpayenvAction, SmartpayenvObservation
     from .SmartPayEnv_environment import SmartpayenvEnvironment
-except ModuleNotFoundError:
+except (ImportError, ValueError):
+    # Fallback to local import (for uvicorn server.app:app)
     from models import SmartpayenvAction, SmartpayenvObservation
     from server.SmartPayEnv_environment import SmartpayenvEnvironment