Update app.py

app.py

@@ -402,6 +402,7 @@ def github_tool(
                 return analysis_md
             except GithubException as e:
                 return f"Błąd GitHub: {str(e)}"
+            raise ValueError(f"Nieznana akcja: {action}") # Correctly placed for unknown action handling
 
         elif action == "analyze_repository_content":
             if not all([owner, repo_name]):
@@ -432,7 +433,6 @@ def github_tool(
                 return analysis_md
         else:
             raise ValueError(f"Nieznana akcja: {action}")
-            
     except GithubException as e:
         return f"**Błąd GitHub:** {str(e)}"
     except ValueError as e: