Em-dash (U+2014) renders as garbage on GRUB serial/SOL output
(IPMI BMC consoles). Replace with ASCII double-hyphen throughout
grub.cfg template, write_canonical_grub_cfg, and theme.txt comment.
Also align template grub.cfg structure with write_canonical_grub_cfg:
toram entry moved to top level (was inside submenu).
bible: add ascii-safe-text contract documenting the no-em-dash rule.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
ddb2bb5d1c