One file was reported converted and was not: 'ok 1085 MB -> 478 MB' printed, every metadata probe
agreed, and the live file was still the H.264 original afterwards, with no error anywhere. RaiDrive
/ Dokan serves cached attributes, so a rename can appear to succeed while nothing landed. The
install step now reads the live file back and compares its SHA-256 with the encode it just made -
the one check a cache cannot satisfy. Costs a read per file; catches a whole class of silent
no-ops that today's 'success' reports hid.