pub fn redact_cmdline(cmd: &str) -> StringExpand description
Scrub credentials out of a space-joined argv before it leaves the
process. Redacted: the value of any --flag value / --flag=value whose
flag name mentions key/token/secret/password/bearer/auth/credential, any
KEY=value env-style arg with such a key, and any bare arg that looks
like a key (sk-…, ghp_…, xox…, Bearer …, or ≥ 32 chars of
base64/hex with no path separator).