Method save_graph

rust-core/src/storage/persistence.rs:60–78

(&self, project_id: &str, graph: &PetCodeGraph)

    }

    pub fn save_graph(&self, project_id: &str, graph: &PetCodeGraph) -> io::Result<()> {
        let project_dir = self.project_dir(project_id);
        fs::create_dir_all(&project_dir)?;
        
        match self.storage_mode {
            StorageMode::Json => {
                self.save_graph_json(project_id, graph)?;
            },
            StorageMode::Binary => {
                self.save_graph_binary(project_id, graph)?;
            },
            StorageMode::Both => {
                self.save_graph_json(project_id, graph)?;
                self.save_graph_binary(project_id, graph)?;
            },
        }
        
        Ok(())
    }

    fn save_graph_json(&self, project_id: &str, graph: &PetCodeGraph) -> io::Result<()> {
        let project_dir = self.project_dir(project_id);