Daniel Samson
c47215821c
Flip the storage docs to record exFAT as a built second engine reusing the shared filesystem harness wholesale (the reuse the architecture promised): full read + write, directories, rename, on-disk up-case folding, routed by VBR to fat or exfat at an exfat-<serial> id-path. Note the two surface limits shared by BOTH engines as vfs-layer concerns, not exFAT shortcuts: u32 file offsets (a 4 GiB cap) and ASCII-only names.