c79c536a6c
When bootloader = "grub" is set, the installer now: - Rejects unknown bootloader values (only "redox" and "grub" accepted) - Enforces minimum efi_partition_size of 8 MiB for GRUB mode - Fails with a clear error if grub.efi or grub.cfg are missing from the GRUB package output instead of silently falling back Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>