fix(cli): cancel bulk scan setup prompts

[ianw-oai]

Summary

bulk-scan could keep waiting for input after a termination signal. Its setup prompts did not receive the command's cancellation signal. The prompts now stop when the command is canceled.

Changes

• Pass the signal to account selection, repository selection, output input, and start confirmation.
• Use the existing test fixture to verify that the signal reaches each prompt.

Testing

• Focused discovery tests: 12 passed; one Windows-only test skipped.
• Type checks, compilation, formatting, and git diff --check: passed.
• Full suite with seed 12345, before the test cleanup: 3,112 passed, 59 skipped, and two environment-related failures. Both failures passed when the publication tests were rerun with temporary state and process inspection access: 12 passed.
• After the test cleanup, the focused tests, type checks, formatting, and diff check passed. The full suite was not repeated.

Risk and rollout

Low risk. Command syntax, defaults, and normal prompt behavior stay the same. No migration is required.

Public disclosure review

• No customer, partner, prospect, or user identities, data, or identifying details are included.
• No credentials, personal data, private source, scan findings, or nonpublic links or tickets are included.
• I reviewed the branch name, title, description, commits, changes, comments, logs, screenshots, attachments, and links for public disclosure.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
🔒 Security Review	✅ Completed 2026-09-18T23:25:52.706648Z	ec761b6	Draft marked ready

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review" or "@codex security review".

Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.