`.$castTo<AdminItemRow>()` / `.$castTo<PublicItemRow>()` at the two list-query call sites replaced the entire result type with an assertion rather than narrowing the one column that actually disagreed, which meant a projection that silently lost a column would still compile — exactly the failure mode this task exists to close, and the opposite of what the commit body claims.
Fixed at the source instead: `itemSelect.ts` now defines `ItemsWithStatus`/`ItemDB`, narrowing `items.status` from the schema mirror's `Generated<string>` (a CHECK-constrained text column, so `kysely-codegen` has no literal union to give it) to `Generated<ItemStatus>`, and builds `ItemContext`, `adminItemQuery()` and `publicItemQuery()` from an `itemDb` typed with `ItemDB` instead of `db`/`DB`. Both `$castTo` calls and their comments are gone; the `AdminItemRow[]` / `PublicItemRow[]` annotations at the two call sites now check for real. Verified by temporarily dropping a column from `adminItemQuery`'s projection: the `AdminItemRow[]` assignment failed to compile as expected, confirming the guarantee actually holds.
Also corrected two now-false statements left over from the conversion: `db-kysely/CONVENTIONS.md`'s worked-example section said `buildItemFilterSql` was "still raw `pg`" and that converting it "would put a second copy of a live function in `src/` that nothing calls" — both untrue since #308 shipped it as `itemFilterExpressions`. And two doc comments in `itemSelect.ts` still named the deleted `PUBLIC_ITEM_SELECT`/`ADMIN_ITEM_SELECT` constants instead of the functions that replaced them.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
bermudalambandClaude Opus 5
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