fix(rebuild): name the sandbox in the printed resume recovery command (#5801)

src/lib/actions/sandbox/rebuild-mcp-phase.test.ts

@@ -36,10 +36,19 @@ describe("MCP rebuild retry guidance", () => {
     });
 
     expect(error.mock.calls.flat().join("\n")).toContain(
-      "nemoclaw onboard --resume --tool-disclosure direct --no-observability",
+      "nemoclaw onboard --resume --name alpha --tool-disclosure direct --no-observability",
     );
   });
 
+  it("names the sandbox on the resume retry form so the printed command is runnable", () => {
+    const error = vi.spyOn(console, "error").mockImplementation(() => undefined);
+
+    printMcpRebuildRetryCommand("alpha", [], "progressive");
+
+    const command = error.mock.calls.flat().find((line) => line.includes("onboard --resume"));
+    expect(command).toContain("nemoclaw onboard --resume --name alpha");
+  });
+
   it("does not turn inherited observability state into an explicit retry override", () => {
     const error = vi.spyOn(console, "error").mockImplementation(() => undefined);
 

src/lib/actions/sandbox/rebuild-mcp-phase.ts

@@ -97,8 +97,12 @@ export function printMcpRebuildRetryCommand(
     return;
   }
   const disclosureArg = toolDisclosure ? ` --tool-disclosure ${toolDisclosure}` : "";
+  // The recreate fault can land after the sandbox was deleted but before create
+  // recorded its name, leaving the resumable onboard session with no name to
+  // resume. Carry --name so this printed command works as written instead of
+  // failing with "no sandbox name was recorded. Re-run with --name".
   console.error(
-    `    2. Run: ${CLI_NAME} onboard --resume${disclosureArg}${observabilityArg}${dcodeAutoApprovalArg}`,
+    `    2. Run: ${CLI_NAME} onboard --resume --name ${sandboxName}${disclosureArg}${observabilityArg}${dcodeAutoApprovalArg}`,
   );
   console.error(`       This will recreate sandbox '${sandboxName}'.`);
 }

test/helpers/rebuild-flow-recovery-cases.ts

@@ -363,7 +363,7 @@ export function registerRebuildFlowRecoveryTests(): void {
         },
       );
       expect(harness.errorSpy).toHaveBeenCalledWith(
-        expect.stringContaining("onboard --resume --tool-disclosure direct"),
+        expect.stringContaining("onboard --resume --name alpha --tool-disclosure direct"),
       );
     });