Update src/main.py

src/main.py

@@ -280,7 +280,7 @@ class AICoScientist:
         )
         
         self.final_report = report
-        self.logger.info(f"Generated research report with {len(report['hypotheses'])} hypotheses")
+        self.logger.info(f"Generated research report with {report.get('hypothesis_count', 'unknown')} hypotheses")
         
         return report