v13 expands the recent per-block address-balance set that incremental client
sync reads: DRIVE_ABCI_METHOD_VERSIONS_V9 bumps two fields from 0 to 1, both
recording what v0 dropped — (1) record_added_balance_outputs folds
shielded-spend transparent credits (Unshield net output, ShieldFromAssetLock
surplus, identity-create fallback), and (2) process_validation_result
records the balance effects of paid-invalid / unsuccessful-paid transitions
(charged fees, adjusted outputs), in a real _v1 of the helper so its _v0 stays
byte-identical to old nodes (the outer process_raw_state_transitions loop is
unchanged and stays at v0). The storage method
(store_address_balances_to_recent_block_storage) is unchanged — only the
recorded set differs. Because that set changes the committed state root, both
bumps activate only once the network votes in v13.