made changes to graph rag file and some ui elements

src/rag/graph_rag.py

@@ -1302,11 +1302,17 @@ class GraphRAG:
         net.options["layout"] = {"improvedLayout": True}
         net.options["interaction"] = {"dragNodes": True}
 
+        original_dir = os.getcwd()
+        os.chdir(os.getenv("WRITABLE_DIR", "/tmp"))
+
         net.save_graph("temp_graph.html")
 
         with open("temp_graph.html", "r", encoding="utf-8") as f:
             html_str = f.read()
+            
         os.remove("temp_graph.html")
+        os.chdir(original_dir)
+        
         return html_str
 
     def verify_graph_integrity(self):