pub const BUNDLE_MAGIC: [u8; 4];Expand description
Magic bytes at the start of every .hmc (hyper-media-container) bundle:
QBDL. The 4-byte on-disk format tag is retained across the .qualia→.hmc
rename (extension ≠ magic, as with most formats), so bundles already built
keep parsing; only the file extension and human-facing name changed.