Method prepare_runtime_images

crates/openshell-driver-vm/src/driver.rs:1688–1717

(
        &self,
        sandbox_id: &str,
        image_ref: &str,
    )

    }

    async fn prepare_runtime_images(
        &self,
        sandbox_id: &str,
        image_ref: &str,
    ) -> Result<RuntimeImagePlan, Status> {
        let bootstrap_image_ref = self.bootstrap_image_ref(image_ref);
        let bootstrap_image_identity = self
            .ensure_cached_bootstrap_rootfs_image(sandbox_id, &bootstrap_image_ref)
            .await?;
        let root_disk = image_cache_rootfs_image(&self.config.state_dir, &bootstrap_image_identity);

        if image_ref.trim() == bootstrap_image_ref.trim() {
            return Ok(RuntimeImagePlan {
                root_disk,
                image_disk: None,
                image_identity: bootstrap_image_identity.clone(),
                bootstrap_image_identity,
            });
        }

        let prepared = self
            .ensure_prepared_image_disk(sandbox_id, image_ref, &root_disk)
            .await?;
        Ok(RuntimeImagePlan {
            root_disk,
            image_disk: Some(prepared.disk_path),
            image_identity: prepared.image_identity,
            bootstrap_image_identity,
        })
    }

    fn bootstrap_image_ref(&self, sandbox_image_ref: &str) -> String {
        let configured = self.config.bootstrap_image.trim();