Skip the reboot prompt when the flag predates the current boot

[Pillumz]

Problem

After omarchy update, omarchy-update-restart keeps asking "Updates require reboot. Ready?" on a machine that has already rebooted.

~/.local/state/omarchy/reboot-required is set by migrations and by the sudoless Docker commands (#8080), and the only thing that ever clears it is omarchy-system-reboot. Reboot any other way - systemctl reboot, the power button, a hard reset after a freeze - and the flag survives, so every following update prompts for a reboot that already happened. Saying No leaves it in place; the only way out is to accept the prompt once or delete the file by hand.

Seen here on 4.0.1: a migration set the flag on Aug 25, the machine was rebooted on Aug 27 outside the Omarchy path, and today's update (three userspace packages and an AUR rebuild, running kernel matching the installed one) still asked for a reboot.

Fix

In the reboot-required branch, compare the flag's mtime with the kernel's boot time from /proc/stat (btime). A flag written before the current boot has already been honoured, so clear it and move on. A flag written since boot, for example by a migration in the same update run, still prompts as before. The kernel and Hyprland checks are untouched.

Tests

New test/shell.d/update-restart-test.sh mocks uname, pacman, pgrep, gum and the reboot/restart commands, points HOME at a temp dir and covers three cases: a flag older than boot is cleared without a prompt, a flag newer than boot prompts and survives a declined prompt, and no flag means no prompt. It skips when there is no kernel under /usr/lib/modules, since the kernel check makes that branch unreachable there. system-power-test.sh and update-sequence-test.sh still pass.

[Copilot]

Pull request overview

Prevents stale reboot prompts by clearing reboot markers created before the current boot.

Changes:

• Compares reboot-marker mtime with /proc/stat boot time.
• Adds regression tests for stale, current, and absent markers.

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Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
bin/omarchy-update-restart	Clears reboot markers already honored by a reboot.
test/shell.d/update-restart-test.sh	Tests reboot-marker timestamp handling.

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