Apple GPU packages pair M3 defaults with runtime lifetime fixes

chriskearney's kernel packaging work in omacom/omarchy-pkgs#1622 pins merged M3 defaults and GPU runtime lifetime fixes. maralcbr discussed pairing the kernel with the boot handoff and then merged the PR into master. github-actions[bot] subsequently reported linux-aurora 7.2.11.aurora7-1 and its headers live on edge for aarch64.

Related default-branch commits update Mesa integration and the M3 MacBook Air boot package. The latter adds GPU start and power handoff settings for J613 and J615 at installation and relevant upgrades. The kernel PR's supplied description still records a hold for testing the exact kernel, Mesa and boot combination together; its merge and edge publication do not establish that this hardware-validation gate passed or that the combination reached stable.