nendo f1d44c3321 SaveSync: pair negotiate on (rom_id, slot), not tagged file_name ...

The server datetime-tags every slot upload's filename (archival spec), so a
slot accrues many rows and the stored file_name never equals the client's
untagged canonical name. Keying negotiate's server-save map on file_name meant
every client save missed -> perpetual "upload", and every tagged server row
went unmatched -> perpetual "download", with save rows growing unbounded.

Pair on (rom_id, slot), collapsing each slot to its newest row, so
compare_save_state actually runs and content hashes decide the action.

Tests: real upload->negotiate round-trip (lets _apply_datetime_tag run, client
reports the untagged name) and a 3-device convergence test; both fail against
the old file_name keying.

2026-05-30 07:39:51 +09:00

32 KiB

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