fix: Fix biome correctness errors

tests/utils.test.ts

@@ -7,7 +7,6 @@ import {
   spyOn,
   test,
 } from "bun:test";
-import * as fs from "node:fs";
 import * as os from "node:os";
 import {
   createWindowBaseName,
@@ -36,7 +35,7 @@ let mockCommandResponses: Record<
 let executedCommands: string[] = [];
 
 function setupMockBun$() {
-  const mockFn = mock((strings: TemplateStringsArray, ...values: any[]) => {
+  const mockFn = mock((_strings: TemplateStringsArray, ...values: any[]) => {
     const parts = values[0] as string[];
     const commandSignature = parts.join(" ");
     executedCommands.push(commandSignature);
@@ -66,11 +65,11 @@ function restoreOriginalBun$() {
 }
 
 describe("core utils", () => {
-  let bunMock: ReturnType<typeof setupMockBun$>;
+  let _bunMock: ReturnType<typeof setupMockBun$>;
 
   beforeEach(() => {
     spyOn(os, "homedir").mockReturnValue("/mock/home");
-    bunMock = setupMockBun$();
+    _bunMock = setupMockBun$();
     executedCommands = [];
     mockCommandResponses = {};
   });
@@ -282,7 +281,7 @@ describe("core utils", () => {
       expect(result.stderr).toBe("");
     });
     test("returns ok false for failed command", async () => {
-      mockCommandResponses["false"] = {
+      mockCommandResponses.false = {
         ok: false,
         stdout: "",
         stderr: "error",