reconcile.py compares a module's live source table against its synced dest
using column-wise aggregates (COUNT/SUM/MIN/MAX/SUM(LENGTH)) — arithmetic and
ordering that DB2 for i and Postgres compute identically, so no shared hash or
byte-identical serialization is needed. Re-applies the module's per-column
source transform (default_expression) so aggregates line up when row sets
agree; exits non-zero on any divergence.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
