Classnames listed in both roomitemtypes and wallitemtypes keep a canonical copy
with the correct id/offerid while the stray wall copy can carry a legacy wrong
id. reconcileFurniDataWithItemsBase now normalizes those stray copies to the
offerid whenever the offerid maps to an items_base row whose classname matches
exactly, so id === offerid === sprite id holds for every uniquely-mapped
classname. The sandbox rehearsal asserts this invariant and the live database
has been reconciled (76 ids fixed, 0 remaining).
runCatalogAudit computed missingCatalogEntries from the pre-repair snapshot,
so generated catalog SQL could reference sprite ids deleted by the
duplicate-classname merge and create new orphaned catalog_items rows. Re-derive
entries after repairStructure and add a defensive guard in generateCatalogSql
that skips entries whose item id no longer exists in items_base.
Also fix the catalog_pages INSERT template (18 columns vs 17 values) which made
page creation always fail with 'Column count doesn't match value count'.
Add a sandbox-guarded live repair rehearsal test covering the full pipeline.