bun test fails on a plain Windows machine for platform reasons, not real defects

[SandroHub013]

Description

bun test in packages/nikcli reports 7 failures on a normal Windows dev machine, none of which are real defects in the code under test:

(fail) Filesystem.realpathInside > rejects a symlink that points outside the root
(fail) Filesystem.realpathInside > rejects a symlink whose leaf points outside the root
(fail) Filesystem.realpathInside > allows a symlink that points inside the root
(fail) Filesystem.realpathInside > rejects a broken symlink that points outside the root
(fail) Filesystem Benchmark > contains performance > path containment check
(fail) Filesystem Benchmark > contains performance > non-contained paths
(fail) Filesystem > resolve > handles absolute paths

Plus, outside the CI-covered subsets:

(fail) cross-platform file:// URL handling > pathToFileURL roundtrips POSIX paths on POSIX (sanity)
(fail) cross-platform file:// URL handling > pathToFileURL handles spaces and unicode
(fail) GlobTool > finds nested matches with ** patterns

Causes:

• The symlink cases call fs.symlink, which needs Developer Mode or an elevated shell on Windows and otherwise fails EPERM. GitHub's windows-latest runner is elevated, so CI never sees this.
• Filesystem.resolve("/absolute/path") correctly answers C:\absolute\path on Windows; the test compares against a POSIX literal.
• fileURLToPath only accepts paths its own platform considers absolute, so /home/user/foo.txt throws on Windows.
• GlobTool reports native paths, so the nested match reads nested\d.ts.
• path.win32.relative resolves both operands against the current drive, so 100k containment checks take ~1.7s against a 1000ms budget calibrated on POSIX.

Net effect: a Windows contributor cannot tell a real regression from platform noise.

Fix in #171.

Nikcli version

live-main @ 2c59e93

Steps to reproduce

1. On Windows without Developer Mode, clean clone of live-main, bun install.
2. cd packages/nikcli
3. bun test test/util test/config test/worktree test/tui/util/double-esc.test.ts — 7 failures.
4. bun test test/cross-platform.test.ts test/tool/glob.test.ts — 3 more.

Operating System

Windows 11 x64

Terminal

Windows Terminal