CDClientSnapshot converts a copy of the client's fdb into its own
CDServer-<hash>.sqlite with the cdserver migrations applied, on its own
connection. CDClientDatabase::Reconnect opens the new file before letting go
of the old one; CDClientManager::Reload empties every table (old entries kept
alive so references from spawned objects stay valid), retires the old fdb view
and loads again.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
CDFdb opens cdclient.fdb once per process and hands out a table when its
columns match the CDServer.sqlite table of the same name. CDServer.sqlite
stays the source of truth: the CDServer migrations change a few rows, so
FindChangedKeys compares both files row by row (a hash per row, summed
per key) and returns the keys that differ, for the tables to read from
SQLite. RowFields reads an fdb row with CppSQLite3Query's accessors and
defaults, so a table fills its entries from either file with one piece
of code.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
