Bash helper that registers an Anthropic credential in OneCLI via three
paths: Claude subscription (runs `claude setup-token` under script(1)
for PTY capture), paste an existing sk-ant-oat… OAuth token, or paste
an sk-ant-api… API key.
On bash 4+ the `claude setup-token` command is pre-filled in the
readline buffer so Enter submits it. On bash 3.2 (macOS default
/bin/bash) we fall back to a plain confirmation prompt. Token
extraction strips ANSI + TTY-wrap line breaks and anchors on
sk-ant-oat…AA with a length cap (via perl; BSD grep caps {n,m} at 255).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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