fix(gateway): include gateway-name/fqdn-proxy in deployment hash encoder

The deploy_gateway_name/deploy_gateway_fqdn methods built the right
workload but signing the deployment then failed with
"unsupported live workload type gateway-name-proxy" — workload_challenge
in deployment.rs had no arms for the new types and bumped on the
default `other` branch.

Encoding order matches the Go SDK's Challenge() for the same workload
type: name (or fqdn) → backends... → tls_passthrough → network.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: 2 people

src/grid_client/deployment.rs

@@ -704,6 +704,28 @@ fn workload_challenge(out: &mut String, workload: &DeployWorkload) -> Result<(),
                 out.push_str(&gpu);
             }
         }
+        zos::GATEWAY_NAME_PROXY_TYPE => {
+            let data: GatewayNameProxyData =
+                serde_json::from_value(workload.data.clone()).map_err(GridError::from)?;
+            out.push_str(&data.name);
+            for backend in &data.backends {
+                out.push_str(backend);
+            }
+            write!(out, "{}", data.tls_passthrough)
+                .map_err(|err| GridError::backend(err.to_string()))?;
+            out.push_str(&data.network);
+        }
+        zos::GATEWAY_FQDN_PROXY_TYPE => {
+            let data: GatewayFqdnProxyData =
+                serde_json::from_value(workload.data.clone()).map_err(GridError::from)?;
+            out.push_str(&data.fqdn);
+            for backend in &data.backends {
+                out.push_str(backend);
+            }
+            write!(out, "{}", data.tls_passthrough)
+                .map_err(|err| GridError::backend(err.to_string()))?;
+            out.push_str(&data.network);
+        }
         other => {
             return Err(GridError::validation(format!(
                 "unsupported live workload type {other}"

src/lib.rs

@@ -14,8 +14,9 @@ pub use calculator::Calculator;
 pub use error::GridError;
 pub use grid_client::{
     DEV_NETWORK, DeploymentOutcome, ExistingNetworkSpec, FullNetworkSpec, FullNetworkSpecBuilder,
-    FullNetworkTarget, GridClient, GridClientConfig, GridClientConfigBuilder, MAIN_NETWORK,
-    NetworkLightSpec, NetworkLightSpecBuilder, NetworkTarget, NodePlacement, NodeRequirements,
+    FullNetworkTarget, GatewayDeploymentOutcome, GatewayFqdnDeployment, GatewayNameDeployment,
+    GridClient, GridClientConfig, GridClientConfigBuilder, MAIN_NETWORK, NetworkLightSpec,
+    NetworkLightSpecBuilder, NetworkTarget, NodePlacement, NodeRequirements,
     NodeRequirementsBuilder, QA_NETWORK, TEST_NETWORK, VmDeployment, VmDeploymentBuilder,
     VmLightDeployment, VmLightDeploymentBuilder, VmLightMount, VmLightSpec, VmLightSpecBuilder,
     VmSpec, VmSpecBuilder, VolumeMountSpec,