9e3cca8efc
- Add fallback GRUB installation for UEFI systems using --removable flag to ensure boot without NVRAM entries - Fix BIOS disk detection for LVM root partitions by using lsblk with proper filtering instead of pkname - Enhance debug logging to include %post chroot phase logs (fws-post.log) which indicate bootloader success - Automatically mount and retrieve installation logs from the installed disk to verify bootloader installation - Add detailed comments explaining UEFI/BIOS fallback strategies and LVM-aware disk detection These changes ensure the system can boot even when NVRAM entries are missing or forgotten by firmware, and provide better visibility into bootloader installation success during the debug phase.