fix(test): replace Unix-only assumptions with cross-platform alternatives (#14906)

packages/opencode/test/tool/bash.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, test } from "bun:test"
+import os from "os"
 import path from "path"
 import { BashTool } from "../../src/tool/bash"
 import { Instance } from "../../src/project/instance"
@@ -138,14 +139,14 @@ describe("tool.bash permissions", () => {
         await bash.execute(
           {
             command: "ls",
-            workdir: "/tmp",
-            description: "List /tmp",
+            workdir: os.tmpdir(),
+            description: "List temp dir",
           },
           testCtx,
         )
         const extDirReq = requests.find((r) => r.permission === "external_directory")
         expect(extDirReq).toBeDefined()
-        expect(extDirReq!.patterns).toContain("/tmp/*")
+        expect(extDirReq!.patterns).toContain(path.join(os.tmpdir(), "*"))
       },
     })
   })
@@ -366,7 +367,8 @@ describe("tool.bash truncation", () => {
           ctx,
         )
         expect((result.metadata as any).truncated).toBe(false)
-        expect(result.output).toBe("hello\n")
+        const eol = process.platform === "win32" ? "\r\n" : "\n"
+        expect(result.output).toBe(`hello${eol}`)
       },
     })
   })