test: tighten core helper object assertions

src/agents/cli-runner.spawn.test.ts

@@ -38,10 +38,6 @@ import { createClaudeApiErrorFixture } from "./test-helpers/claude-api-error-fix
 type ProcessSupervisor = ReturnType<typeof getProcessSupervisor>;
 type SupervisorSpawnFn = ProcessSupervisor["spawn"];
 
-async function expectPathMissing(targetPath: string): Promise<void> {
-  await expect(fs.access(targetPath)).rejects.toMatchObject({ code: "ENOENT" });
-}
-
 beforeEach(() => {
   resetAgentEventsForTest();
   resetClaudeLiveSessionsForTest();

src/infra/command-analysis/inline-eval.test.ts

@@ -7,7 +7,7 @@ import {
 } from "./inline-eval.js";
 
 function expectInlineEvalDescription(hit: InterpreterInlineEvalHit | null, expected: string) {
-  expect(hit).toEqual(expect.any(Object));
+  expect(hit).not.toBeNull();
   if (hit === null) {
     throw new Error(`Expected inline eval hit for ${expected}`);
   }

src/infra/npm-registry-spec.test.ts

@@ -12,7 +12,7 @@ import {
 
 function parseSpecOrThrow(spec: string) {
   const parsed = parseRegistryNpmSpec(spec);
-  expect(parsed).toEqual(expect.any(Object));
+  expect(parsed).not.toBeNull();
   if (parsed === null) {
     throw new Error(`Expected ${spec} to parse`);
   }