[fix] Hold aquamarine with the pinned Hyprland ABI

[Fail-Safe]

Summary

• Fixes Update #134: Omarchy updates fail when pacman tries to install aquamarine 0.15.0-2 (libaquamarine.so=14) while IgnorePkg keeps the patched Hyprland that still requires libaquamarine.so=13.
• Add aquamarine to the existing kernel/Hyprland IgnorePkg hold and document the ABI coupling.
• Extend the guest contract test to require the new hold.

Test plan

• python3 guest/tests/verify.py
• Fresh or reset guest: confirm /etc/pacman.conf (via restored /usr/share/try-omarchy/pacman.conf) lists aquamarine on IgnorePkg
• Run Omarchy update and confirm it no longer fails on the aquamarine / hyprland SONAME conflict

Note for existing VMs: this lands in new/reset guest images. Already-provisioned disks still have the old baked pacman.conf; they can add aquamarine to IgnorePkg in both /usr/share/try-omarchy/pacman.conf and /etc/pacman.conf (or reset) until they pick up a new image.

[Chessing234]

ignorepkg coupling matches the described libaquamarine abi break; test updated.

[Fail-Safe]

Follow-up: #136 is the right guest update hold, but it does not unblock empty-root factory builds — ALA no longer publishes SONAME 13, so pacman -Sp still fails, and putting aquamarine on IgnorePkg in the builder conf makes dependency resolve worse.

Opened #142 to vendor aquamarine 0.14.0-2 for builder-only resolve, refresh the lock, and keep the guest IgnorePkg hold. Happy to close #136 in favor of that once it lands (or keep #136 as a smaller cherry-pick if preferred).

[themartiano]

Thanks for the pull request!

Codex comments

The guest ABI hold matches #134. CI and the combined merge-result tests passed.