[firewalker06]

Summary

• add a visible Archive action to every schedule row and an Archive all sessions action to the schedule-list menu
• archive idle sessions without deleting, disabling, or otherwise changing schedule configuration; reject running/queued individual sessions and report bulk skips
• make repeated archive requests idempotent and add confirmation, feedback, accessibility, responsive styling, and focused regression coverage

Verification

• bundle exec ruby test/remote_server_test.rb
• bin/test
• bundle exec ruby -c bin/remote-ui-smoke
• node --check lib/hq/remote_ui/assets/app.js
• isolated Chrome/Playwright check at 1440x900 and 390x844, including both confirmations and post-action /schedules preservation

Note

• A full bin/remote-ui-smoke attempt reached an unrelated existing timeout waiting for the hidden mobile Agents toolbar before its schedule assertions. The focused isolated schedule fixture passed.