huskies: merge 1232 bug Gateway chat bot crashes (CLI exit 1) on a sled MCP tool error instead of surfacing it

server/src/gateway/tests.rs

@@ -1213,11 +1213,20 @@ async fn gateway_mcp_post_against_disconnected_sled_returns_error_response_fast(
 
     let body: serde_json::Value = resp.0.into_body().into_json().await.unwrap();
     assert_eq!(body["id"], 3);
+    // Story 1232: a disconnected sled is a tool-call-time failure, not a
+    // protocol fault — it must come back as a non-fatal MCP tool_result
+    // (isError: true) so the calling `claude` CLI's MCP client treats it as
+    // a normal tool error instead of exiting non-zero, not a top-level
+    // JSON-RPC `error` object.
     assert!(
-        body.get("error").is_some(),
-        "Expected a JSON-RPC error for a disconnected sled; got: {body}"
+        body.get("error").is_none(),
+        "a disconnected sled must not produce a top-level JSON-RPC error; got: {body}"
     );
-    let msg = body["error"]["message"].as_str().unwrap_or("");
+    assert_eq!(
+        body["result"]["isError"], true,
+        "expected a non-fatal tool_result for a disconnected sled; got: {body}"
+    );
+    let msg = body["result"]["content"][0]["text"].as_str().unwrap_or("");
     assert!(
         msg.contains("offline-sled"),
         "error message must name the sled; got: {msg}"