getMaxI moved in the same transaction as logRepositoryOperationStart and removed unneeded package imports from RegTAPDB
trying (and failing) to reproduce the 'could not serialize access due to read/write dependencies among transactions' PostgreSQL exception
README notes
trying (and succeeding in the end) to trigger serialization failure in PostgreSQL with the SERIALIZABLE transactions isolation mode
new db-based staging functionality is now in place and the fs-based staging was tested for that last (?) time, before emarking on the new DB-based staging (also, a legacy support incident)