fix(test): resolve the WebDAV handler path with fileURLToPath

[anhtahaylove]

Problem

All 37 tests in tests/unit/webdav-server-3485.test.ts fail on Windows:

Error [ERR_MODULE_NOT_FOUND]: Cannot find module
  'C:\C:\...\scripts\dev\webdav-handler.mjs'

Note the doubled drive prefix. The handler path is built from URL.pathname:

const HANDLER_PATH = path.resolve(
  path.dirname(new URL(import.meta.url).pathname),
  "../../scripts/dev/webdav-handler.mjs"
);

URL.pathname returns a URL path, not an OS path. On POSIX the two happen to coincide, so this works. On Windows it yields /C:/Users/... — a leading slash before the drive letter. path.resolve does not consider that absolute, so it prepends the CWD and produces C:\C:\..., which cannot be imported.

CI runs on Linux, so this never shows up there; it only costs Windows contributors, silently, on every run.

Fix

Use fileURLToPath, which decodes a file: URL to a real OS path on every platform. (It also un-escapes percent-encoding, so paths containing spaces work — URL.pathname would leave %20 in place.) node:url was already imported here for pathToFileURL.

Verification

Same file, same machine (Windows), before and after:

	pass	fail
before	0	37
after	37	0

Found while auditing why a local full-suite run reports failures that CI does not. This accounts for 37 of them.