feat(attendees): attendee check-in/check-out audit log

[romanetar]

ref: https://app.clickup.com/t/86bccdn3w

Summary

• Prompt for a required reason when flipping "Checked In?" from Yes to No on the Edit Attendee page; sent as reason on the PUT (cancel keeps the attendee checked in).
• New collapsible panel under Notes with the check-in/check-out history (Action / Source / Actor / Reason / IP / Date), search by actor email, action and date filters, ordering, pagination and CSV export. Reloads after each save.
• Tests for the check-out prompt flow and the log reducer.

Dependency

Requires summit-api PR OpenStackweb/summit-api#619. Deploy the API first: the PUT now rejects check-outs without a reason.

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📥 Commits

Reviewing files that changed from the base of the PR and between 5ef6525 and 4bc1c0a.

📒 Files selected for processing (12)

• src/actions/attendee-actions.js
• src/actions/attendee-check-in-log-actions.js
• src/components/forms/attendee-form/__tests__/attendee-form-check-out.test.js
• src/components/forms/attendee-form/__tests__/attendee-form-notes-remount.test.js
• src/components/forms/attendee-form/__tests__/attendee-form.test.js
• src/components/forms/attendee-form/attendee-form.js
• src/components/forms/attendee-form/check-in-log-panel.js
• src/components/forms/attendee-form/check-in-log-panel.less
• src/i18n/en.json
• src/reducers/attendees/__tests__/attendee-check-in-log-reducer.test.js
• src/reducers/attendees/attendee-check-in-log-reducer.js
• src/store.js

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[romanetar]

Superseded by #1108 (branch renamed to match the required naming format).