debug: add diagnostic logging to app.py for Space deployment

app.py

@@ -4,10 +4,24 @@ FBMC Chronos-2 Forecasting API
 HuggingFace Space Gradio Interface
 """
 
+import sys
+print(f"[STARTUP] Python version: {sys.version}", flush=True)
+print(f"[STARTUP] Python path: {sys.path[:3]}", flush=True)
+
 import gradio as gr
 import os
 from datetime import datetime
-from src.forecasting.chronos_inference import run_inference
+
+print("[STARTUP] Basic imports successful", flush=True)
+
+try:
+    from src.forecasting.chronos_inference import run_inference
+    print("[STARTUP] chronos_inference import successful", flush=True)
+except Exception as e:
+    print(f"[ERROR] Failed to import chronos_inference: {e}", flush=True)
+    import traceback
+    traceback.print_exc()
+    run_inference = None
 
 
 # Global configuration
@@ -16,6 +30,8 @@ FORECAST_TYPES = {
     "full_14day": "Full Forecast (All borders × 14 days)"
 }
 
+print("[STARTUP] Configuration loaded", flush=True)
+
 
 def forecast_api(run_date_str, forecast_type):
     """