Bun 1.4.2 on Windows reads NODE_EXTRA_CA_CERTS as ANSI and takes it as
UTF-8: C:\Users\<中文>\.cache\magpie\bun\system-ca-*.pem became
"锟斤拷" and "load failed: No such file or directory". An 8.3 short name
doesn't help (Windows gives 测试 none). Bun opens a relative path from
where it runs, which is under the same user folder, so the path is given
relative to Bun's dir when it isn't ASCII.
Tried on the Windows box with Bun 1.4.2 and a local HTTPS server signed
by a test root, from a cwd under 测试: absolute path -> warn + FAIL
UNABLE_TO_VERIFY_LEAF_SIGNATURE; relative path -> 200. The new test's
Windows cases ran there (windows/amd64 test binary): PASS.