test(cli): dedupe runtime capture fixtures across command specs

src/cli/nodes-cli.coverage.test.ts

@@ -1,5 +1,6 @@
 import { Command } from "commander";
 import { beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { createCliRuntimeCapture } from "./test-runtime-capture.js";
 
 type NodeInvokeCall = {
   method?: string;
@@ -61,15 +62,7 @@ const callGateway = vi.fn(async (opts: NodeInvokeCall) => {
 
 const randomIdempotencyKey = vi.fn(() => "rk_test");
 
-const runtimeLogs: string[] = [];
-const runtimeErrors: string[] = [];
-const defaultRuntime = {
-  log: (msg: string) => runtimeLogs.push(msg),
-  error: (msg: string) => runtimeErrors.push(msg),
-  exit: (code: number) => {
-    throw new Error(`__exit__:${code}`);
-  },
-};
+const { defaultRuntime, resetRuntimeCapture } = createCliRuntimeCapture();
 
 vi.mock("../gateway/call.js", () => ({
   callGateway: (opts: unknown) => callGateway(opts as NodeInvokeCall),
@@ -95,8 +88,7 @@ describe("nodes-cli coverage", () => {
   });
 
   beforeEach(() => {
-    runtimeLogs.length = 0;
-    runtimeErrors.length = 0;
+    resetRuntimeCapture();
     callGateway.mockClear();
     randomIdempotencyKey.mockClear();
   });